Doctor of Engineering, The University of Tokyo

Bioengineering

Mechanical engineering

生体工学

機械工学

Informatics, Mechanics and mechatronics

Informatics, Robotics and intelligent systems

Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Machine materials and mechanics

Life sciences, Biomaterials

Life sciences, Biomedical engineering

Apr. 1972 - Mar. 1975
Graduate School of The University of Tokyo, Graduate School, Division of Engineering, 精密機械工学専攻

Apr. 1970 - Mar. 1972
Graduate School of The University of Tokyo, Graduate School, Division of Engineering, Precision Machinary Engineering

Mar. 1969
Saitama University, Faculty of Science and Engineering, Mechanical Engineering

2001 - 2001
第２出版部会校閲委員, 日本機械学会, Society

1996 - 1997
材料力学部門委員会代議員, 日本機械学会, Society

1996 - 1997
第５技術委員会委員長, 日本機械学会, Society

Effect of Different Arrival Time Waveform Analysis on the Accuracy of Acoustic Emission Source Location in Above-Ground Tanks
Sayuri MURAKAMI; Wataru KOJIMA; Takuji KOIKE; Minoru YAMADA; Shigenori YUYAM; Kyoji HOMMA
Journal of the Japan Society for Non-Destructive Inspection, 58, 9, 403-407, Sep. 2009, Peer-reviwed
Scientific journal, Japanese

Underground Prospecting System with Microwave for Inspecting Root Ingestion Grub
Kazuma Motomura; Tokumaru TAKIGUCHI; Sayuri MURAKAMI; Kyoji HOMMA
JSMEJournal, The Japan Society of Mechanical Engineers, 75, 754, 1733-1738, Jun. 2009, Peer-reviwed, A prospect system is offered to detect the plant vermin (e.g. larva of lamellicom beetle) living in the soil without digging up the soil by using a C-band microwave sensor (mean frequency: 5GHz). The characteristic of the prospect system is required to detect explicitly the behavior of vermin moving underground in the vicinity of the surface. The prospective characteristic, however, is limited by the magnitude of microwave attenuation (attenuation constant α) traveling in the soil which is depended on water contents of the soil. First of all, relation of microwave attenuation and water contents of the soil is measured for "Akadama" soil and "Kanuma" soil with uniform grain size, which are fundamentally used in gardening. Detectable critical transmission depth of soil for each water contents is confirmed as the result of the experiment. α was detected quantitatively varying the magnitude of vibration amplitude of mini-speaker (frequency: 1Hz, displacement: 0.1mm, 0.2mm, diameter of diaphragm: 25mm) embedded in the water content controlled soil (volume water contents: 0.3g/cm^3). In this case, detectable critical transmission depths of soil were 105mm, 125mm for the displacement amplitude 0.1mm, 0.2mm. The real movement of the larva of lamellicom beetle (head around width: 4mm, body length: 25mm) embedded in the soil was measured using the system. Critical transmission depths of the soil were 200mm and 100mm for the case of α: 0.1Np/cm and α: 0.2Np/cm. It was confirmed that the system is able to detect the vermin, if the moisture content of the soil is small.
Scientific journal, Japanese

Adhesive strength of Plaque to Soda-Lime Glass in Marine Mussel
Michihito AOKI; Kyoji HOMMA; Sayuri MURAKAMI; Takuji KOIKE
Journal of Biomechanical Science and Engineering, 4, 1, 133-144, Jan. 2009, Peer-reviwed
Scientific journal, English

Influence of curing temperature on adhesive strength of byssus plaques in maring mussel
Michihito AOKI; Takuji KOIKE; Sayuri MURAKAMI; Kyoji HOMMA
Sessile Organisms, THE SESSILE ORGANISMS SOCIETY OF JAPAN, 25, 2, 85-90, Aug. 2008, Peer-reviwed, Mussel adhesive protein (MAP) shows promise for the future as a new artificial adhesive material for bonding surgical incisions. The adhesive properties of MAP, however, have not been clarified until now. The purpose of this study was to assess the adhesive strength of MAP with respect to various substrates. The effect of curing temperature on the curing time of MAP after bonding to the substrate was also investigated. Adhesive strength was measured, using a newly developed peel test, using byssus preparations exposed to different curing temperatures (20°C, 40°C, 70°C) for 24 hours following an initial 48 hours of curing at 20°C. Adhesive strength depended on the curing temperature, being 19% lower at a curing temperature at 40°C than at 20°C, and 41% lower at 70°C. In terms of its adhesive strength, MAP may thus be suitable as a medical adhesive in surgery.
Scientific journal, Japanese

Effect of Ferric Ions on the Mechanical Strength of Marine Mussel Adhesive Proteins
Michihito Aoki; Yoshihiro Takeda; Hajime Fukunaga; Takuji Koike; Sayuri Murakami; Kyoji Homma
Journal of Biomechanical Science and Engineering, 3, 2, 188-199, 2008, Peer-reviwed, Mussel adhesive protein (MAP) is expected to be used as a new bioadhesive. However, the mechanical properties of MAP have not been reported, despite the potential importance of MAP in medical applications. The study aims to estimate the mechanical strength of MAP, and describe the influence of ferric ions present in MAP on the mechanical strength. Fe3+ incorporated in MAP is regarded as having an important role in the mechanical properties. Mussels were classified into two groups in order to compare the effect of Fe3+ on both the tensile and peel properties of MAP. One group was exposed to artificial seawater with a high concentration of ferric ions, and the other group is exposed to natural seawater as a control. The results revealed that the deterioration of the adhesive strength over time was different between the two groups, although significant differences in the tensile properties were not observed. While the adhesive strength in the control group decreased with elapsed time, it was increased for the iron-enriched group over the first 17 days. This suggested that ferric ions may improve the magnitude of the adhesive strength for MAP. © 2008, The Japan Society of Mechanical Engineers. All rights reserved.
Scientific journal, English

Modeling of the Human Cochlea using the Finite Element Method, Proceedings of the Ninth International Conference on Computational Structures Technology
T. Koike; T. Yamamoto; S. Murakami; K. Homma
Proceedings of the Ninth International Conference on Computational Structures Technology, paper 85, 2008, Peer-reviwed
International conference proceedings, English

AE Events Issued from the Stem of Plants under Long Term Water Stress
Sayuri MURAKAMI; Youichi YAHAGI; Kyoji HOMMA; Takuji KOIKE
Journal of Environment and Engineering, The Japan Society of Mechanical Engineers, 2, 3, 601-610, Nov. 2007, Peer-reviwed, Environmental changes due to global warming greatly influence ecological systems including those of plants. Diagnostic technologies using non-destructive inspection methods to evaluate environmental stress are few. Acoustic emission (AE) is applied to plants under water stress and the damage is measured. Cavitation phenomena are created by negative pressure in plants because of the lack of water in vessels or tracheids. Since shock waves due to cavitations create AE, the water stress state of plants can be monitored in real time by measuring AE. In this paper, AE events due to cavitation were measured in the drought-treated Ginkgo biloba L., Ficus spp., and Lycopersicon. In all plants examined, AE events increased during drought. In a short-term drought experiment, AE events were stopped by supplying water, but not in a long-term drought experiment. In Ginkgo biloba L. and Ficus spp, a temporary decrease of AE events was observed during drought. Plants adjust their internal water balance through certain self-defense mechanisms.
Scientific journal, English

AE Source Location Using Neural Network on AE Evaluation of Floor conditions in Above-Ground Tank
Sayuri MURAKAMI; Kyoji HOMMA; Takuji KOIKE; Minoru YAMADA; Shigenori YUYAMA
Online Journal, J. of Solid Mechanics and Materials Engineering, The Japan Society of Mechanical Engineers, 1, 7, 919-930, Oct. 2007, Peer-reviwed, Present study reports acoustic emission (AE) technique to evaluate corrosion damages of bottom plates (floor conditions) in above-ground tanks. Artificial AE signals were generated by pencil lead breaks at arbitrary locations on the bottom of a tank (300 kL in capacity) to investigate accuracy of AE source location. Attenuation of AE waves was shown to be very small in liquid. AE source location analysis was conducted, using a neural network (NN). Input and output units of the NN were arrival time differences between four AE sensors and coordinate of the AE source location, respectively. Arrival time differences of AE waves were determined by visual observation of the first signal arrivals and threshold crossing times of the AE signal normalized by its peak amplitude. It was concluded that accurate AE source location can be obtained by the decision process resulted from automated readings of threshold crossing time, based on the NN trained method by theoretical calculation.
Scientific journal, English

Fundamental Studies of Signal Strength and Source Location Using Simulated AE Sources Produced in Model Corrosion Pits Placed on the Bottom Plate of an Above-Ground Tank
Sayuri MURAKAMI; Ryo OGAWA; Takuji KOIKE; Minoru YAMADA; Shigenori YUYAMA; Kyoji HOMMA
Proceedings of AEWG, 1, Oct. 2007, Peer-reviwed
International conference proceedings, English

Adhesive Stregth of Plaque to Soda-Lime Glass in Marine Mussel
M.Aoki; K.Homma; S.Murakami; T.Koike
JSME Journal, The Japan Society of Mechanical Engineers, 73, 726, 307-312, Feb. 2007, Peer-reviwed, Mussels living in the ocean adhere to shore reef and each other with byssus formed by insolubilization of a bonding protein, whose application to the new bio-adhesion material has been expected. Their adhesive strength has not been accurately measured because peeling test method is not established since the contact areas between a plaque and the substrate are less than 1 mm². Present paper attempts to measure adhesive strength of the plaque using original simple peeling test method and investigates the influence of environmental change on the adhesive strength and the change of the adhesive strength in the lapse of time. The results show that the-adhesive strength of the plaque decreases with the change in the environment by moving mussels from the beach to an experimental environment and the adhesive strength changes along with the elapsed time after the plaque is formed.
Scientific journal, Japanese

Effect of the stiffness of the round window membrane of the inner ear on auditory activity
Takuji Koike; Shinichi Gomita; Sayuri Murakami; Kyoji Homma
Proceedings of the Third Asian Pacific Conference on Biomechanics, S163, 2007, Peer-reviwed
International conference proceedings, English

Effects of individual differences in size and mobility of the middle ear on hearing
Takuji Koike; Masaki Shinozaki; Sayuri Murakami; Kyoji Homma; Toshimitsu Kobayashi; Hiroshi Wada
JSME International Journal, Series C: Mechanical Systems, Machine Elements and Manufacturing, 48, 4, 521-528, 15 Jun. 2006, Peer-reviwed, The size of the tympanic membrane and ossicles and the stiffness of the middle-ear ligaments and joint are different between individuals, and the effects of these differences on middle-ear transfer function have not been clarified. In this study, using finite-element middle-ear models, the effects of individual differences in the size and mobility of the middle ear on its transmission characteristics were analyzed. The individual differences in the size of the normal middle ear were found to affect the transfer function by up to 10 dB. The effects of the Young's moduli of the stapedial annular ligaments and the incudostapedial joint on the transfer function were large compared to the effects of the Young's moduli of the other parts of the middle ear. Copyright © 2006 by The Japan Society of Mechanical Engineers.
Scientific journal, English

Effects of individual differences in size and mobility of the middle ear on hearing: Theoretical analysis
Takuji Koike; Masaki Shinozaki; Sayuri Murakami; Kyoji Homma; Toshimitsu Kobayashi; Hiroshi Wada
The 9th Western Pacific Acoustics Conference CD-ROM, 228, Jun. 2006, Peer-reviwed
International conference proceedings, English

ムラサキイガイの持つ接着タンパク質の簡易接着強度測定について
M.Aoki; S.Murakami; T.Koike; K.Homma
日本機械学会論文集A, The Japan Society of Mechanical Engineers, 72, 716, 487-492, Apr. 2006, Peer-reviwed, The adhesive protein of the mussel widely living in the ocean is expected as an ingredient of the adhesive. Adhesive strength of the protein to substratum has not been clarified because a method of measuring the strength does not exist. In this research, the plaque consisted of adhesive protein was peeled using the spatula-shaped jig inclined at the angle of 45 degrees to substratum. Adhesive strength was determined from the peeling load obtained by the jig with a strain gauge. To investigate the effect of the thickness of the plaque on the peeling load, based on linear fracture mechanics, peeling simulations of plaque from substratum were conducted using the finite element method. The simulation suggested that adhesive strength of the plaque to substratum is quantitatively evaluated by averaging the peeling load fluctuations.
Scientific journal, Japanese

AE Events Issued from the Stem of Plants under Long Term Water Stress
Sayuri MUMRAKAMI; Youichi YAHAGI; Kyoji HOMMA; Takuji KOIKE
Transactions of JSME, The Japan Society of Mechanical Engineers, 71, 712, 200-205, Dec. 2005, Peer-reviwed, The influence to ecosystem of plant by global warming is investigated. However, few diagnostic technologies by non-destructive inspection to environmental stress are established. Acoustic emission (AE) is applied to the measurement of damage under the water stress of plants. Cavitation phenomena are known by negative pressure under the lack of water in the vessel. Since shock wave due to cavitations issues AE, water stress state of plant can be monitored on real time by measuring AE. In this paper, AE events by the cavitation were measured in drought-treated Ginkgo biloba L, Ficus spp. and Lycopersicon es. In all plant, AE events are increased during drought and stopped by supplying water. In Ginkgo and Ficus, a temporary decrease of AE events was observed during drought. It is presumed that plant adjust internal water balance for self-defense by a certain procedure. Stoma closing of the leaf considered being the most effective physiology, however, was not the cause.
Scientific journal, Japanese

Corrosion Source Location in Plate of Steel Using Neural Networks，JSME Journal
Aiko INABA; Kyoji HOMMA; Takuji KOIKE; Sayuri MURAKAMI; Minoru YAMADA
Transactions of JSME, Journal A, 71, 707, 54-58, Jul. 2005, Peer-reviwed
Scientific journal, Japanese

Detection of Small Pests on Vegetable Leaves Using GLCM
Sayuri MURAKAMI; Kyoji HOMMA; Takuji KOIKE
Proceedings of ASAE Annual International Conference, 17-20, Jul. 2005, Peer-reviwed
International conference proceedings, English

Acoustic Analysis of Adhesive Surface in Granular Inhomogeneous Structural Material using Neural Network
家元利幸; 本間恭ニ; 村上小百合; 小池卓二
JSME Journal A, The Japan Society of Mechanical Engineers, 71, 706, 976-981, Jun. 2005, Peer-reviwed, Difficulty in quality assessment of adhesive interface between granular inhomogeneous materials and a disk plate has been pointed out in nondestructive ultrasonic inspection because of the effect of multiple-reflection at the contact point of each granular particle. A simulation technique is presented in this paper for estimating the adhesion quality of a CBN grinding wheel at the interface between the granular material and the disk plate. The grinding wheel was transposed to one dimensional serial model consisted of each segment of particle with random acoustic impedances at the interface. The propagation of incident ultrasonic waves in the grinding wheel was calculated and echoes from adhesive interface were analyzed. The domestic echo waveform from the adhesive interface was specified and learned by a neural network corresponding adhesion quality and the characteristic of the echo waveform. The effect of the grinding wheel structure to the accuracy of presumption was investigated by using the network. It was revealed that the neural network is effective to assess the adhesive quality of such inhomogeneous structural materials.
Scientific journal, Japanese

クラスタ内の内部統計量を考慮した繰り込み群分子動力学の検証シミュレーション
山田耕一郎; 本間恭二; 稲村豊四郎; 武澤伸浩
日本機械学論文集 A, 70, 698, 1447-1452, Oct. 2004, Peer-reviwed
Research society, Japanese

Development of a minimally invasive implantable hearing aid using an electromagnetic coil to vibrate the stapes
Takuji Koike; Satoshi Aoki; Kyoji Homma; Hiroshi Wada
Eleventh International Congress on Sound and Vibration, 1637-1642, 2004, Peer-reviwed
International conference proceedings, English

Non-destructive Inspection of Adhesive imperfection in CBN Grinding Wheel
本間恭二; 草薙卓; 村上小百合
日本機械学会論文集 A編, The Japan Society of Mechanical Engineers, 69, 687, 1635-1640, Nov. 2003, Peer-reviwed, An automatic system of ultrasonic inspection with a multi-layered neural network software to adhesive surface defects between CBN segment chips and a disk periphery has been developed to serve the guarantee of the quality of the grinding wheel. The network was used to contrive the accuracy improvement of the inspection. The waveforms reflected from the adhesive location of either prescribed artificially exfoliated defect or non-defect were investigated in detail to distinct the characteristics of the waveform. The network learned preferentially with both defect and non-defect waveforms, and also the improvement of the network learning compensated the amplitude of the wave near the edges was implemented. The inspection was performed to the grinding wheel with being unknown defects by using the learned network. Inspection results supported that the inspection system contributes the decision of the adhesive integrity of the CBN grinding wheel.
Scientific journal, Japanese

古代文字画像の視認性向上に関する研究
本間恭二; 竹内康弘; 村上小百合
精密工学会誌, The Japan Society for Precision Engineering, 69, 2, 205-210, Feb. 2003, Peer-reviwed, Existed historical pictures contain more or less granular noise and shading on the background, and that they show blurred contours. The blurred picture would adversely affect to the image processing by computer. A method is proposed in this paper to improve adaptive visibility for blurred image of ancient characters written on the "Paper Squeezes". Images are calculated to extract the character edge, using both gradient operator and wavelet transform. Two images are superposed to emphasize the edge pattern. An image space is divided into small square blocks as sub-images. These are compared with template blocks using image correlation, and are classified into eight patterns. Desirable results in terms of the experiment were obtained for the adaptive visibility improvement.
Scientific journal, Japanese

ニューラル･ネットワークを利用したエルボ型管継手の擬似AE源位置標定
本間恭二; 岡村由香
非破壊検査, 日本非破壊検査協会, 51, 11, 726-732, Nov. 2002, Peer-reviwed
Scientific journal, Japanese

微小切削シミュレーションにおける系の境界条件の影響について
山田耕一郎; 本間恭二
日本機械学会論文集C, 68, 674, 3088-3093, Oct. 2002, Peer-reviwed
Scientific journal, Japanese

Dynamic response to mechanical stimulation in myoblasts
S Murakami; K Homma; Y Atomi
JSME INTERNATIONAL JOURNAL SERIES C-MECHANICAL SYSTEMS MACHINE ELEMENTS AND MANUFACTURING, JAPAN SOC MECHANICAL ENGINEERS, 44, 4, 920-927, Dec. 2001, An experiment was carried out to investigate the morphological response of mechanically stimulated myoblasts that were cultured on a collagen coated silicone ribbon and were subjected to tension for 6 hours. Images of the cells were taken by a CCD camera and input into a computer every 10 minutes for 8 hours. Both morphological change represented by a shape index (SI) and cumulative migration of the cells were measured every hour. An increase of the SI and decrease of the migration velocity were observed during tensile loading. Considering the cell structure, it is considered that hydrodynamic force of the cytosol would act on cyto-skeletons due to the deformation of the cell. The fluid-structure interaction analysis was carried out to estimate the stress of the filament, where the actin filament and cytosol were modeled as all elastic cylinder and viscous fluid, respectively. The results of the calculation suggested that the rounding of the cell might not be caused by the break of the filament due to the hydrodynamic force.
Scientific journal, English

機械的刺激を受けた筋芽細胞の動的応答
村上小百合; 本間恭二; 跡見順子
日本機械学会論文集 A編, 66, 647, 1432-1438, Jul. 2000, Peer-reviwed
Scientific journal, Japanese

An Off-line Recognition System of Handwritten Thai Characters
Veelathanabotr Poonlap; Kyoji Homma
Proc. Fourth Symposium of Natural Language Processing（May.10 Thailand）, May 2000, Peer-reviwed
International conference proceedings, English

小球衝突によるセラミックスの表面損傷と残留強度の評価（第１報，窒化けい素平板への窒化けい素球衝突-実験結果）
大串浩司; 本間恭二; 市川昌弘; 岡部永年; 松村 隆; 阿部 豊
日本機械学会論文集（A編）, The Japan Society of Mechanical Engineers, 65, 634A, 1263-1268, Jun. 1999, In order to clarify mechanisms of surface damage and to establish methods for evaluating strength degradation in ceramics subjected to impact of solid particles, testings of silicon nitride sphere impact to silicon nitride specimens were carried out. The residual strengths of specimens were measured by flexural tests, in which the damaged surfaces were the tensile sides. Fractures were classified to several types depending on their own impact damages. Influences of specimen thickness on the impact damage and the residual strength were also examined. From the comparison of test results of indentation and impact, the possibility was shown that the residual strength due to sphere impact would be evaluated using a method based on the elastic indentation theory.
Japanese

小球衝突によるセラミックスの表面損傷と残留強度の評価（第２報，窒化けい素平板への窒化けい素球衝突-弾性解析）
大串浩司; 本間恭二; 市川昌弘; 岡部永年; 松村 隆; 阿部 豊
日本機械学会論文集（A編）, The Japan Society of Mechanical Engineers, 65, 634, 1269-1275, Jun. 1999, Peer-reviwed, In the 1st report, it was shown that it was possible to apply an elastic indentation theory to the evaluation of surface damage of ceramics due to sphere impact, although this was limited to low velocities in which elastic damage dominated. In this research, further investigation on the applicability of the theory to the residual strength evaluation was conducted. In the case that elastic damage or cone crack was related in the final fracture, the residual strength of ceramic specimens damaged by sphere impact was estimated using the elastic indentation theory and conventional fracture mechanics. Good agreement between estimated curves and test results were obtained.
Scientific journal, Japanese

小球衝突によるセラミックスの強度低下に関する研究（第３報，炭化けい素平板への炭化けい素球衝突）
大串浩司; 本間恭二; 市川昌弘; 岡部永年; 松村 隆; 阿部 豊
日本機械学会論文集（A編）, The Japan Society of Mechanical Engineers, 65, 634, 1276-1281, Jun. 1999, Peer-reviwed, In order to elucidate mechanisms of surface damage and to establish methods for evaluating strength degradation in ceramics subjected to dynamic contact with solid particles, silicon carbide sphere impact tests were carried out for silicon carbide specimens. A gas-gun-type apparatus was used for these tests. The residual strengths of the surface damaged specimens were measured by flexural tests. Damage analysis and residual strength evaluation were conducted. For the case of elastic damage (cone crack), the residual strength could be evaluated using indentation analysis, up to low speed range, in which the specimen was not ruptured by impact.
Scientific journal, Japanese

"ニューラルネットワークによるAE源の位置標定およびその標定誤差に関する研究"
真家敦子; 本間恭二; 結城宏信
日本機械学会論文集 A編, The Japan Society of Mechanical Engineers, 65, 634, 1187-1192, Jun. 1999, Peer-reviwed, Location of defects in solid can be presumed in terms of arrival time differences of AE-waves to each sensor. A small amount of the arrival time error, however, might influence on the AE source location. Present paper investigates the influence of errors including both the arrival time and sensor location on the AE source. Superiority of the neural network technique over the least square method was discussed on accuracy of location obtained by the arrival time differences. Applicability of source location using simulated AE source to real structure of pipe was also discussed. It was concluded that the neural network technique should provide available means to the AE source location because of less influence characteristics from the noise.
Scientific journal, Japanese

応力とひずみ
本間恭二
ひずみ測定技術講習会, Jul. 1998
Japanese

セラミックスの小球押し込み損傷と残留強度の評価（炭化けい素に対する炭化けい素球押込み-弾性応答を仮定した場合）
大串浩司; 本間恭二; 市川昌弘; 岡部永年; 高松 徹; 松村 隆; 阿部 豊
日本機械学会論文集 A編, The Japan Society of Mechanical Engineers, 64, 619, 675-680, Mar. 1998, Peer-reviwed, A silicon carbide sphere indentation was subjected to the surface of silicon carbide plate specimen to examine indentation damage patterns and residual strength of the specimen. After the residual strength of the damaged specimen was measured by the four-point flexural test, damage patterns were observed with the scanning electron microscope. In the case that the cone crack (equivalent to elastic damage) was the fracture origin, the residual strength was evaluated. A method of approximate analysis of cone crack taking account of mechanism of stable crack growth was proposed. The estimated values were almost in agreement with the measured values.
Scientific journal, Japanese

小球押込みによるセラミックスの弾塑性変形解析（窒化けい素に対する窒化けい素球押込み；弾塑性応答を仮定した場合）
大串浩司; 本間恭二; 市川昌弘; 岡部永年; 高松 徹; 松村 隆; 阿部 豊
日本機械学会論文集 A編, The Japan Society of Mechanical Engineers, 64, 619, 681-688, Mar. 1998, Peer-reviwed, Since plastic deformations occur in contact between silicon nitride sphere and plate, the elastic/plastic stress analysis is required to evaluate the residual strength of ceramics, surface of which is damaged due to the sphere indentation. For the purpose of evaluating elastic/plastic sphere indentation damages and residual strength of ceramics, an approximate analysis of elastic/plastic contact deformation in ceramics was carried out. The elastic/plastic internal stresses of the ceramic plate were also analysed by using the finite element method. Reasonable correlation between the maximum residual stress caused at surface in the tangential direction due to sphere indentation and the residual strength was obtained.
Scientific journal, Japanese

Ultrasonic Inspection Support System That Combines an Expert System with a Neural Network
戴 暁旬; 本間 恭二
JSME Journal, The Japan Society of Mechanical Engineers, 63, 614, 2228-2234, Oct. 1997, Peer-reviwed, In order to support the ultrasonic inspection technique of defects, a method that combines the expert system with the neural network is proposed. Knowledge of selection of the NDT inspection and ultrasonic testing methods is expressed by the rule base in detail. Recognition knowledge of the detected ultrasonic wave signals is difficult to extract, so the recognition of the waveform reflected from defects is carried out using the neural network. Setting of the initial values is performed using a knowledge base. Many learning iterations of the neural network may be required, and sometimes the neural network may not converge. We aim to construct a flaw detection system based on a newly developed knowledge base. The usefulness of the system is verified by the improvement of the learning speed of this system. The results of learned data in terms of detected waveform are added to the case-base as object-oriented knowledge expressions, which may be used to support the nonprofessional user.
Scientific journal, Japanese

小球押込みによるセラミックスの強度低下に関する研究（窒化けい素に対する窒化けい素球押込み：弾性応答を仮定した場合）
大串浩司; 本間恭二; 市川昌弘; 岡部永年; 高松徹; 松村隆; 阿部豊
日本機械学会論文集 A編, The Japan Society of Mechanical Engineers, 63, 606, 392-398, Feb. 1997, Peer-reviwed, Indentation tests on silicon nitride specimens using a silicon nitride sphere were carried out in order to establish a method for evaluating sphere indentation or impact damage of surface layers and post-indentation residual strength in structural ceramics. The residual strengths of indented specimens were measured by four-point bending tests. The relationship between indentation load and cone crack length was derived from the equilibrium condition of cone crack. Then the residual strength was estlmated from the cone crack length. The estimated values were in good agreement with the was estimated from the cone crack length. The estimated values were in good agreement with the measured values. only in the region of low indentation load where elastic deformation is dominant.
Scientific journal, Japanese

A Simulation of Crack Extension in Abrasion Process of Brittle Materials
Kyoji HOMMA; Kenji MURAKAMI; Kyoko IIDA
Proc. of 2nd International Abtech Conference, 850-856, Dec. 1996, Peer-reviwed
International conference proceedings, English

Application of a Neural Network to Ultrasonic Flaw Detection in Layered Medeia
Kyoji Homma; Toshio Miyashita
Proceedings of 14th World Conference on NDT, 1, Dec. 1996, Peer-reviwed
International conference proceedings, English

Estimation of acoustic emission source waveform of fracture using a neural network
Hironobu Yuki; Kyoji Homma
NDT and E International, Elsevier Ltd, 29, 1, 21-25, 1996, The applicability of a neural network to acoustic emission (AE) is presented. It is shown that the shape of the simulated source waveform using piezoelectric ceramics is steplike, similar to that of mode I crack extension, and its rise-time can be varied by the resonance frequency in the thickness direction. The results imply that the simulated source can provide learning waveforms for the network. Actual AE waveforms were also acquired by conducting a tensile test of a chevron-notched graphite specimen. It was demonstrated that the appropriate source waveform associated with mode I crack extension was successfully determined by the network taught with simulated waveforms.
Scientific journal, English

Application of Neural Network to Ultrasonic Fraw Detection in Layered Media
Kyoji HOMMA; Toshio MIYASHITA
Transaction of JSME, The Japan Society of Mechanical Engineers, 61, 583, 569-574, Mar. 1995, Peer-reviwed, Classification of the ultrasonic wave signals emitted from defects such as delamination and inclusions in layered media has been attempted using the neural network technique. In providing both reflected waveform from defects to the input and information of defect type, as well as location to the output, the relationships between the input and the output were learned beforehand by the neural network. In the system, the network learned in terms of detected waveform, however, could not infer correct information of defects for a waveform of a different phase. Therefore, appropriate parameters sampled from the detected waveform were added to the network. Locally connected networks restricting the connection between input layer and output one were proven in a highly precise estimation. It was revealed that the locally connected network is an effective technique to estimate the location of each defect, types of defect, and the amount of defects, within the range of the application of the model.
Scientific journal, Japanese

Applicability of Piezoelectric Ceramics to a Dipole Simulated AE Source
Hironobu YUKI; Kyoji HOMMA; Ken-ichi KUROKAWA
Transaction of JSME Ser.A, The Japan Society of Mechanical Engineers, 60, 573, 1193-1197, May 1994, Peer-reviwed, The characteristics of a simulated AE source using piezoelectric ceramics were discussed. A small piezoelectric ceramic plate located near the crack tip of a chevron-notched PMMA specimen was subjected to a step voltage for generating simulated AE waves. AE waveforms due to piezoelectric ceramics were monitored with a 6-channel measurement system. A tensile test of the specimen was also conducted to investigate the correspondence with actual AE caused by crack extension. The radiation pattern of the simulated wave suggested the occurrence of mode I deformation at the simulated source. According to the moment tensor analysis, the direction of force was considered to be approximately normal to the crack surface. It is found that although there are a few types of deformation during crack extension, the simulated AE source using piezoelectric ceramics has the same main component as one of those in the fracture. The simulated AE source using piezoelectric ceramics is equivalent to the dipole source of mode I deformation.
Scientific journal, Japanese

Characeristics of Artificial AE Source using Piezoelectric Ceramics
Yironobu YUKI; Kyoji HOMMA; Kiyoshi WATANABE; Keiji OHTA
Transaction of JSME Ser.A, The Japan Society of Mechanical Engineers, 60, 573, 1188-1192, May 1994, Peer-reviwed, A piece of piezoelectric ceramics attached to an aluminum alloy plate was subjected to voltage, and surface displacements of the opposite side were detected by a capacitive displacement sensor. The source waveforms were calculated by a deconvolution integral using Green's function. It was demonstrated that the shape of source waveforms due to the step function of voltage is a triangle, and the rise time of the waveform depends only on the resonance frequency in the thickness direction of ceramics. A wide range of the frequency spectrum of the source waveform was obtained. It was also found that source waveforms due to one period of the sine function of voltage contain three peak values. The shape of waveforms was varied by frequency and phase of applied voltage. Consequently, the artificial AE source using piezoelectric ceramics will be useful for source waveform analysis. Also, it is convenient to prepare learning waveforms for the waveform analysis using a neural network.
Scientific journal, Japanese

Analysis of Artificial AE Waveforms Using a Neural Network
Hironobu YUKI; Kyoji HOMMA
Journal of Acoustic Emission, 10, 3-4, 35-41, Sep. 1993, Peer-reviwed
Scientific journal, English

Estimation of Grainding Surface in Ceramics (2nd Report, Effect of Surface Flaw on Strength)
Kyoji HOMMA; shunji YOSHIZAWA; Katsumi KANEKO
Transactions of JSME, 59, 558, 569-574, Feb. 1993, Peer-reviwed
Scientific journal, Japanese

Evaluation of Grinding Surface in Ceramics(1st Report, Fraw Characterization using Ultrasonic Detector)
Kyoji HOMMA; Shunji YOSHIZAWA; Takeshi KISHIWADA
Transactions of JSME, The Japan Society of Mechanical Engineers, 58, 556, 3742-3746, Dec. 1992, Peer-reviwed, Nondestructive inspections of surface flaws of zirconia in grinding were investigated by using the available method submerged Rayleigh Wave detection. Shockwave transducers with two different characteristics of resonance frequency (15 MHz, 25 MHz) and focusing diameter (1 mm, 0.4 mm) were selected. Flaw calibrations of the system have been carried out for artificial flaws instead of real grinding flaws. The results obtained are itemized as follows. ( 1 ) The depth of the flaw represented by a scratch could be estimated quantitatively, and the detectable limited depth would be 2.5μm. ( 2 ) For small defects inspected by means of Vickers indentation, smaller focusing diameter of the transducer made for higher inspection sensitivity, still inspectability was explicitly decreased in comparison to the case of the scratch. ( 3 ) Compressive residual stresses remaining on the surface made for lower estimations of length. ( 4 )Real surface flaws caused by heavy grindings, as a factor of strength degradation, could easily be detected.
Scientific journal, Japanese

AE Source Analysis by Means of Neural Network(2nd Report, Effect of Network Structure)
Horonobu YUKI; Kyoji HOMMA
Transactions of JSME, The Japan Society of Mechanical Engineers, 58, 555, 2219-2223, Nov. 1992, Peer-reviwed, The analysis using a neural network was carried out to determine the acoustic emission (AE) source waveform from the artificial AE signal detected by a piezoelectric AE sensor. We assume that each sampling point of the waveform corresponds to one unit of a layer in the network. It was found that the two-layer network assuming convolution form would be effective to determine source waveforms. Since linearity of the input/output relationship of the system would be limited, two-layer networks might not be available to deal with a general problem in AE source analysis. Hence, the network structure was extended to three layers, in which was used the back-propagation algorithm for learning. It was demonstrated that if appropriate waveform data were provided for learning, analogous source waveforms could be exactly determined. It was also revealed that the number of intermediate layer units might be of greater necessity than the number of learning patterns, but the number of units exerted little influence on the calculations.
Scientific journal, Japanese

AE Source Waveform Analysis by Using a Neural Network
Hironobu YUKI; Kyoji Homma
Proceedings of International Acoustic Emission Symposium, 235-242, Oct. 1992, Peer-reviwed
International conference proceedings, English

A Simulation of Crack Behabior in Ceramics under Grinding Process
Kyoji Homma; Kenji Murakami
International Journal of JSME, 26, 1, 8-13, Mar. 1992, Peer-reviwed
Scientific journal, Japanese

Fracture Toughness Evaluation by Using Chevron-Notched Graphite Bend Bar Specimen
Kyoji HOMMA; Hiroshi DAITOU
Transactions of JSME, The Japan Society of Mechanical Engineers, 57, 543, 2805-2809, Nov. 1991, Peer-reviwed, The fracture toughness (K_IC) of the isotropic graphite was determined for four-point bend bar specimens with chevron notches. Compliance calibration in terms of chevron-notch configurations was determined to obtain the crack resistance curve (K_γ) required for obtaining the correct value of K_IC. Acoustic emission signals were measured for detecting precracking and successive crack growth. Loads and back face strains instead of load point deflection were measured for the calibration. Calculations of the stress intensity for the chevron-notched specimen were carried out based on the assumption of Bluhm's slice model. The results of the interlaminar shear correction (k) were investigated in comparison with the data of other researchers. It was concluded that the k value lay between those of other researchers, and the curve of the K_γ vs crack length was constant in the vicinity of the minimum value of the stress intensity.
Scientific journal, Japanese

AE Source Analysis by mean of a Neural Network (1st Report, Calculation of Artificial Waveform)
Koji HOMMA; Hironobu YUKI
Transactions OF JSME, The Japan Society of Mechanical Engineers, 57, 540, 1916-1921, Aug. 1991, Peer-reviwed, A new AE source analysis using a neural network was investigated. A two-layer network and the artificial AE source signals caused by pencil lead break were used. Detected waveform data obtained by capacitive displadement transducer were processed by the personal computer system. For calculation of the unknown source waveform, the previously trained memory matrix of the network corresponded to the input/output relation. In association with the number of learning data, a small number of data should have estimated incorrect waveforms. But, when additional restrictions were imposed on the memory matrix, appropriate waveforms could be obtained irrespective of the number of learning data, which could be as small as one. The analysis also had such advantages as that relatively low noise data might be calculated if the detected data should include a lot of noise.
Scientific journal, Japanese

An Analysis of Crack Behavior in Ceramics under Grinding Process
Kennji MURAKAMI; Kyoji HOMMA
Transactions of JSPE, 57, 8, 1425-1430, Aug. 1991, Peer-reviwed
Scientific journal, Japanese

AE Source Analysis of Fracture in Ceramics
Kyoji HOMMA; Kyoji HOMMA
Transactions of JSME, The Japan Society of Mechanical Engineers, 55, 515, 1607-1612, Jul. 1989, Peer-reviwed, The source analysis of AE due to the crack extension in ceramics is described. The vertical force released by the pencil lead fracture has been used as the artificial AE source. The transfer function of input/output signals is determined experimentally. Analysis is first carried out to investigate the phenomena of dips induced prior to the arrival of the surface stress emission. The amplitude of the dip depends on the length of the lead, which suggests that the creation of the dip might be caused by the stress pulse from the lead. It is shown that the AE source wave, D, associated with the crack extension in graphite corresponds well to an energy release rate, G. Results in vitrified grinding wheels with different grain diameters reveal the tendency of the AE source waveforms to coincide with each other irrespective of microstructures.
Scientific journal, Japanese

Inspection forSurface Flaw in Ceramics by Use of Rayleigh Waves (Characteristics of the Automated Device)
Kyoji HOMMA; Tsukasa Nishimura
Transactions of JSME, The Japan Society of Mechanical Engineers, 55, 510, 498-502, Feb. 1989, Peer-reviwed, A 15 MHz surface Rayleigh wave system with computer controlled data acquisition and analysis was used to study the detection and characterization of surface flaws in ceramics. Rayleigh waves were generated by placing a focused transducer at critical angles with respect to the test specimens included with artificial flaws and indentation flaws. The scattering of the waves into water by the surface flaws was detected, analysed in the time domain and correlated with the size and the shape of the flaws. The surface Rayleigh wave technique by the device could detect flaws as small as 40 μm deep on soda-lime glass and 50 μm on silicone nitride.
Scientific journal, Japanese

Geometry Effects on Fracture Toughness of Ceramics with Chevron Notched Specimens
Kyoji HOMMA; Masaharu TOHYAMA
Transactions of JSME, The Japan Society of Mechanical Engineers, 54, 503, 1445-1450, Jul. 1988, Peer-reviwed, Plane strain fracture toughness (K/) measurements were made on ceramics (graphite, engineering ceramics) using short bar and bend bar chevron notched specimens previously calculated by optimum specimen geometry, to enable precracking, by means of 3-dimensional finite element and Bluhm's slice model analysis. Acoustic emission (AE) signals were also measured for detecting precracking and successive crack growth. AE signals due to precracking and crack growth were obtained for all short bar and bend bar specimens of graphite ; and deviations of K_IC values were relatively small with variations in chevron notch angle and the width of the slot from 0.2 mm to 0.5 mm. In most engineering ceramics, unstable fracture immediately occurred after popin. About 20% higher K_IC values were obtained in comparison to another testing device (fractometer-Terratek Co.), except for one commercial hot-pressed Si₃N₄. It means that the width of the slot should be less than 0.2 mm in highly brittle solids, and confirmation of precracking is actually important to evaluate K_IC value.
Scientific journal, Japanese

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URL 2
DOI URL

Deformation in Contact between Sphere and Rough Surface
kyoji HOMMA; Masahiro TSUKAMOTO
Transactions of JSPE, The Japan Society for Precision Engineering, 54, 7, 1310-1315, Jul. 1988, Peer-reviwed, The extended Hertzian analysis is investigated of elastic and elasto-plastic contact between sphere and rough surfaces. The theoretical analysis is presented using simplified rough surface models for estimating the effects on normal approach in variation of the parameters such as relatively topographical features and material constants in constitutives (sphere and flat plane with asperities). It is assumed that the asperity consists of a part of the sphere, the uniform stress is applied at the bottom of the asperity, and that horizontal displacements of each asperity are neglected. The asperities in the range of 21×21 squares are incrementally indented by the spheres. The normal, Gausian, distributions are applied to both heights and intervals of the asperities being on the flat plane. It was found that in elastic contact the present results, including the effects of the parameters, of the normal approach vs. load diagrams obtained here lied in between the Hertzian and the Greenwood analysis. No appreciable qualitative differences, however, should be found between elastic and elasto-plastic contacts.
Scientific journal, Japanese

Studies of Photoelastic Image Processing
Kyoji HOMMA; Takashi AKAZAWA
Transactions of JSME, The Japan Society of Mechanical Engineers, 53, 486, 303-308, Feb. 1987, Peer-reviwed, A new photoelastic image processing system is produced. This paper describes some procedures for image processing and for separating the principal stresses associated with 2-dimensional stress analysis. The system comprises a high resolution television camera, an interface unit, a microcomputer (μPD8086-2CPU), a color monitor and a printer. Special image processing of thinning and image enhancement are conducted by using the computer. The sum of the principal stresses satisfies Laplace's equation. In solving the equation, the boundary element method is used. The stresses might be separated by combining the sum and the difference of the principal stresses. Stress distributions are calculated for each disk and sheets subjected to compression, with semi-circular notches and with a circular hole, respectively. These were consistent with the theoretical results. Computing times for each example were about 1/2 hour. The system is also applicable to the problems of moire or holography with minor modification of the system.
Scientific journal, Japanese

Measurement of Grade in the Grinding Wheel by Acoustic Emission (2nd Report, indentation Technique)
Kyoji HOMMA; Kei KIMURA
Transactions of JSPE, The Japan Society for Precision Engineering, 52, 7, 1243-1248, Jul. 1986, Peer-reviwed, A method for determining the grade in the vitrified wheel in terms of the acoustic emission (AE) is described. Correlations between the grade and the amounts of AE pulses emitted from the specimen surface which is indented with either Vickers' or spherical indenter are investigated. Experiments are performed for eight different wheel structures at room temperature. As for the sphere indentation, a clear correlation between AE total counts and the grade obtained by conventional technique is found, if the small amounts of indentation load is subjected. Though total ringdown counts for the Vickers indentation are widely distributed, reflecting the statistical nature of the fracture process in a microscopically heterogeneous media, mean values should give the appropreate results. While these examples tested are not widely ranged in the grade, they do show availability in applying the AE technology to the determination of the degree of the wheel grade.
Scientific journal, Japanese

ダブルトーション試験によるビトリファイド砥石のき裂進展挙動について
Kyoji HOMMA; Katsumi KANEKO
Transactions of JSPE, 51, 5, 1000ー1006, May 1986, Peer-reviwed
Scientific journal, Japanese

Measurement of theGrinding Wheel by Acoustic Emission (1st Report, Fundamental Characteristics of AE for the Wheel)
Kyoji HOMMA; Kei KIMURA
Transactions of JSPE, The Japan Society for Precision Engineering, 52, 1, 100-105, Jan. 1986, Peer-reviwed, An attempt has been made to evaluate the grade from the analysis of AE signals detecting small amounts of energy release caused by the fracture of the local area of the wheel surface. Present report mainly describes; (1) the characteristics of AE wave propagation in the wheel, (2) quantitative relationship between AE counts and the amount of fracture by using the Okoshi's grade testing machine, and (3) strain rate dependence of AE, respectively. Ringdown counting is selected by taking into account of both intervals of AE events and ringing time. In order to compare each data quantitatively, sensitivity is adjusted such that the counts of artificial AE wave obtained by rupture of lead (HB) indicate same value. Specimens tested are 15 different kinds of vitrified wheels. The results are as follows : (1) As frequency of AE waves, the frequency component more than 350 kHz should decrement during wave propagation in the wheel and that AE counts are independent of natural frequency. (2) AE counts should have one to one correspondence to the amount of fracture.
Scientific journal, Japanese

An Evaluation of Crack Growth Behavior for Silicone Nitride Subjected to Double Torsion and Vickers Indentation by Means of Acoustic Emission Monitoring
Kyoji HOMMA; Toshihiro TORIGOE
Transactions of JSME, The Japan Society of Mechanical Engineers, 51, 462, 499-503, Feb. 1985, Peer-reviwed, An attempt has been made to estimate the indentation cracking process from the information of acoustic emission monitoring. The relations between crack propagation velocity and acoustic emission threshold in terms of double torsion testing were first investigated. The results indicated that the crack propagation velocity was approximately proportional to the acoustic emission rate. These relations were applied directly to the analysis of the indentation. Various loading speeds and loading levels were selected. Assuming that the radial crack with semi-circular only occurs during indentation process, the crack length should be given as a function of the acoustic emission rate. From the results of calculating the extent of crack propagation obtained by the acoustic emission counts for the indentation, good agreements were obtained between predicted and measured crack length. Fracture toughness values obtained by these testings were also compared.
Scientific journal, Japanese

Studies on Fracture of Grinding Wheels（2nd Report, Analysis of Fracture Process in Terms of Acoustic Emission Measurement
kyoji HOMMA
Transactions of JSPE, The Japan Society for Precision Engineering, 47, 08, 920-925, Aug. 1981, Peer-reviwed, Previous work dealt with the effects of pores on macroscopic fracture of the vitrified grinding wheels. In the present work, fracture mechanisms of the same materials from the stages of microcrack growth to final fracture under uniaxial tensile load-ing are discussed by means of the acoustic emission monitoring which provides the information of dynamic morphological changes of them. Results of the emission monitoring revealed that a clear correlation between the crack growth behavior and the. emission amplitude distributions was founded, and the incremental microcrack growth in the location of inhomogeniety could be detected throughout loading. It was also found with the specimens having sharp notches that, prior to the fiinal fracture, intermittent fracture (break in two pieces) of abrasive grains or bondbridges or both took place, while with the specimens without notches that a simultaneous. coalescence of each microcracks extended sufficiently to critical length should cause the final fracture . Although only qualitative discussion of the results were attempted in this study, the type of information obtained can readily be used for qualitative interpretation of the fracture mechanics of the materials.
Scientific journal, Japanese

Studies on Fracture of Grinding Wheels(1st Report, Effects of Pore on Strength)
Kyoji HOMMA
Transactions of JSPE, 46, 11, 1344-1350, Nov. 1980, Peer-reviwed
Scientific journal, Japanese

Fracture Processes of the Grinding Wheels
Hiroshi MIYAMOTO; Kyoji Homma
Proceedings of International Conference on Production Engineering, 1, 701-706, Aug. 1974, Peer-reviwed
International conference proceedings, English

Study on Fracture of Grinding Wheels by Linear Fracture Mechanics
Hiroshi MIYAMOTO; Kyoji HOMMA
Transactions of JSPE, 40, 7, 577-582, Jul. 1974, Peer-reviwed
Scientific journal, Japanese

Interpretation of Fracture Behaviour of a Grinding Wheel Material by a Crack Body Model
Hiroshi MIYAMOOTO; Kyoji HOMMA
Proceedings of 3rd International Conference on Fracture, 4, 3, 343, Apr. 1973, Peer-reviwed
International conference proceedings, English

Interpretation of Mechanical Behavior of the Grinding Wheels in terms of Microstructure
Hiroshi MIYAMOTO; Yoji ISHIJIMA; Kyoji HOMMA
Selected Papers from the 1st International Conference on Mechanical Behavior of Materials, 4, 484-494, 1972, Peer-reviwed
Research society, English

Interpretation of Mechanical Behavior of the Grinding Wheels in terms of Microstructure
Hiroshi MIYAMOTO; Yoji ISHIJIMA; Kyoji HOMMA
Proceedings of 1st International Conference on Mechanical Behavior of Materials, 1, 622-627, Aug. 1971, Peer-reviwed
International conference proceedings, English

ムラサキイガイ足糸の付着力をはかる
本間恭二; 青木路人
Dec. 2006, 日本接着学会誌, 26, 3, 11-17, Japanese, Introduction other

今ＡＥは面白い Part３ 定量的ＡＥ信号解析と応用 ◆ニューラルネットワークによるＡＥ信号解析
本間恭二
Aug. 1997, 超音波TECHNO, 9, 8, 39-43, Japanese, Introduction other

ニューラルネットワークとエキスパートシステムを融合した超音波探傷システムの構築
本間恭二; 戴 暁旬
Jun. 1997, 超音波TECHNO, 9, 6, 37-39, Japanese, Introduction other

ＡＥ（アコースティックエミッション）って何、連載記事「スポットライト」
本間恭二
Jan. 1997, 自動車技術, 51, 1, 60-61, Japanese, Introduction other, 0385-7298, 10001953323, AN00105899

超音波を用いた研削加工面の探傷
本間恭二
May 1990, 機械と工具, 89-90, Japanese, Introduction other

砥粒加工のメカニズム解析
本間恭二
May 1990, 機械と工具, 91-92, Japanese, Introduction other

材料力学からみたEdgeの特性
本間恭二
The Japan Society for Precision Engineering, Nov. 1988, 精密工学会誌, 54, 11, 2039-2042, Japanese, Introduction other, 0912-0289, 110001369390, AN1003250X

ファインセラミックスの破壊のメカニズム
本間恭二
Apr. 1988, 機械と工具, 4, 75-79, Japanese, Introduction other

破壊
本間恭二
Aug. 1984, 日本機械学会誌, 87, 789, 791-792, Japanese, Introduction other

多孔質体の力学
宮本 博; 本間恭二
Dec. 1975, 材料科学, 12, 1-2, 12-18, Japanese, Introduction other

機械工学事典
日本機械学会編
Joint work, 日本機械学会, Apr. 1997

材料力学
本間恭二; 市川昌弘; 江藤元大; 船見国男
Joint work, 技報堂出版, Apr. 1994

ニューラルネットワーク －計算力学とＣＡＥシリーズ12－
矢川元基編修
Joint work, 培風館, May 1992

ファインセラミックスの精密加工
セラミックス加工研究会編
Joint work, 工業調査会, Jul. 1990

ムラサキイガイ付着盤形状がプローブによる対物はく離抵抗力に与える影響
島崎賢一; 青木路人; 小池卓二; 本間恭二
Oral presentation, Japanese, 日本機械学会,第22回バイオエンジニアリング講演会
Jan. 2010

超磁歪素子を利用した埋め込み型骨導補聴器の開発：人体を用いた加振力評価
原島立成; 小池卓二; 本間恭二; 青木路人; 羽藤直人; 神埼 晶
Oral presentation, 日本機械学会,第22回バイオエンジニアリング講演会
Jan. 2010

内耳の振動挙動シミュレーション：ライスネル膜が基底板振動に及ぼす影響
坂本智明; 小池卓二; 青木路人; 本間恭二
Oral presentation, 日本機械学会,第22回バイオエンジニアリング講演会
Jan. 2010

ムラサキイガイ付着盤の接着強度の長期的時間変化
青木路人; 早田真理子; 小池卓二; 本間恭二
Oral presentation, Japanese, 日本機械学会,2009年度年次大会
Sep. 2009

ニューラルネットワークによる粗い鋳肌面に存在する欠陥の識別
本間恭二; 高橋眞; 吉田弘希; 青木路人; 村上小百合; 小池卓二
Oral presentation, Japanese, 日本機械学会,2009年度年次大会
Sep. 2009

PVDF フィルムを用いた内視鏡下副鼻腔手術における生体振動情報計測システムの開発
高橋裕太郎; 原島立成; 小池卓二; 青木路人; 本間恭二
Oral presentation, Japanese, 日本機械学会,2009年度年次大会
Sep. 2009

超磁歪素子を利用した埋め込み型骨導補聴器の加振力評価
小池卓二; 高橋裕太郎; 原島立成; 青木路人; 本間恭二; 羽藤直人; 神崎晶
Oral presentation, Japanese, 日本機械学会,2009年度年次大会
Sep. 2009

芯の圧折による擬似AE特性と部材溶接部のAE源位置標定
本間恭二; 青木路人; 小池卓二; 村上小百合
Oral presentation, Japanese, 非破壊検査協会,第17回AE総合コンファレンス
Aug. 2009

鉄イオンを含むムラサキイガイ付着盤の接着強度の経時変化
青木路人; 武田吉弘; 小池卓二; 村上小百合; 本間恭二
Oral presentation, Japanese, 日本機械学会,バイオエンジニアリング部門講演会
Jan. 2009

有限要素法を用いたヒト聴覚器官の モデル化と臨床応用
山本宇紘; 小池卓二; 本間恭二; 青木路人
Oral presentation, Japanese, 日本機械学会,第21回バイオエンジニアリング講演会
Jan. 2009

超磁歪素子を利用した埋め込み型骨導補聴器の開発
山本顕生; 小池卓二; 本間恭二; 青木路人; 羽藤直人; 神崎 晶
Oral presentation, Japanese, 日本機械学会,第21回バイオエンジニアリン グ講演会
Jan. 2009

ムラサキイガイ付着盤形状とプローブによる対物はく離強度との関係
島崎賢一; 青木路人; 村上小百合; 小池卓二; 本間恭二
Oral presentation, Japanese, 日本機械学会,第19回バイオフロンティア講演会
Sep. 2008

内耳内リンパ圧上昇が 張力に及ぼす影響
坂本智明; 山本宇紘; 小池卓二; 村上小百合; 本間恭二
Oral presentation, Japanese, 日本機械学会,第19回バイオフロンティア講演会
Sep. 2008

発声による体表振動を利用した高騒音下音声情報取得デバイスの開発
高橋紀成; 高橋裕太郎; 小池卓二; 村上小百合; 本間恭二
Oral presentation, Japanese, 日本機械学会,2008年度年次大会
Aug. 2008

アブミ骨-蝸牛連成振動モデルによる基底板振動解析: 外リンパ瘻による基底板振動変化
山本宇紘; 小池卓二; 村上小百合; 本間恭二
Oral presentation, Japanese, 日本機械学会,バイオエンジニアリング部門講演会
Jan. 2008

鼓膜加振用軽量コイルを用いた術中聴力検査法の検討
福田康一; 小池卓二; 須納瀬弘; 森川敬之; 村上小百合; 本間恭二
Oral presentation, Japanese, 日本機械学会,バイオエンジニアリング部門講演会
Jan. 2008

耳小骨可動性計測装置の臨床応用 －患者アブミ骨の可動性計測－
吉田圭祐; 小池卓二; 池田勝久; 小川郁; 村上小百合; 本間恭二; 和田仁
Oral presentation, Japanese, 日本機械学会,バイオエンジニアリング部門講演会
Jan. 2008

温度履歴がムラサキイガイ付着盤の接着強度に及ぼす影響
青木路人; 石丸雅規; 村上小百合; 小池卓二; 本間恭二
Oral presentation, Japanese, 日本機械学会,2007年度年次大会
Sep. 2007

ムラサキイガイ足糸の機械的性質
武田吉弘; 青木路人; 福永元; 村上小百合; 小池卓二; 本間恭二
Oral presentation, Japanese, 日本機械学会,2007年度年次大会
Sep. 2007

植物の根を食害する昆虫のマイクロ波によるセンシング
本村和磨; 瀧口徳丸; 村上小百合; 小池卓二; 本間恭二
Oral presentation, Japanese, 日本機械学会,2007年度年次大会
Sep. 2007

鋳鋼の鋳込みで生じる欠陥のニューラルネットワークによる分類
松本義紀; 高橋真; 村上小百合; 小池卓二; 本間恭二
Oral presentation, Japanese, 日本機械学会,2007年度年次大会
Sep. 2007

アカギの水ストレスによるAE応答とcryo-SEM観察、第16回AE総合コンファレンス
村上小百合; 藤崎良祐; 本間恭二; 小池卓二
Oral presentation, Japanese, 日本非破壊検査協会,第16回AE総合コンファレンス
Sep. 2007

松材線虫病に感染したクロマツの木部キャビテーションについて
堀研一郎; 村上小百合; 本間恭二; 小池卓二; 中田了五; 相川拓也; 石田厚; 高 梨琢磨; 矢崎健一
Oral presentation, Japanese, 日本非破壊検査協会,第16回AE総合コンファレンス
Sep. 2007

石油タンクにおける腐食ピットモデルを用いたAE信号解析と擬似AE源位置標定
村上小百合; 小川亮; 本間恭二; 小池卓二; 湯山茂徳; 山田實
Oral presentation, Japanese, 日本非破壊検査協会,第16回AE総合コンファレンス
Sep. 2007

マツ材線虫病における木部キャビテーションの進行過程
堀研一郎; 村上小百合; 本間恭二; 中田了五; 相川拓也; 石田厚; 高梨琢磨; 矢 崎健一
Oral presentation, Japanese, 日本森林学会大会,第118回
Apr. 2007

小型圧電素子埋め込み型補聴器開発のための基礎研究
鈴木晃; 小池卓二; 村上小百合; 本間恭二
Oral presentation, Japanese, 日本機械学会,バイオエンジニアリング講演会
Jan. 2007

アブミ骨-蝸牛連成振動モデルによる聴覚器微少振動様式の解明
五味田慎一; 小池卓二; 村上小百合; 本間恭二
Oral presentation, Japanese, 日本機械学会,バイオエンジニアリング講演会
Jan. 2007

周囲組織を考慮した開放耳管のモデル化－有限要素モデルによる解析－
井上博文; 小池卓二; 村上小百合; 本間恭二
Oral presentation, Japanese, 日本機械学会,バイオフロンティア講演会
Nov. 2006

ニューラルネットワークによる鋳鋼の鋳込みで生じる欠陥の分類
松本義紀; 村上小百合; 小池卓二; 本間恭二
Oral presentation, Japanese, 日本機械学会,2006年度年次大会
Sep. 2006

蝸牛容積の差違が聴力に及ぼす影響
五味田愼一; 小池卓二; 村上小百合; 本間恭二
Oral presentation, Japanese, 日本機械学会,2006年度年次大会
Sep. 2006

高濃度鉄を含む水中環境中におけるムラサキイガイのガラス基板への接着強度
福永元; 武田吉弘; 青木路人; 村上小百合; 小池卓二; 本間恭二
Oral presentation, Japanese, 日本機械学会,2006年度年次大会
Sep. 2006

骨加振振動が蝸牛に到達する経路の周波数依存性（低周波数域から超音波周波数域まで）
鈴木晃; 小池卓二; 村上小百合; 本間恭二
Oral presentation, Japanese, 日本機械学会,2006年度年次大会
Sep. 2006

Cバンドマイクロ波センサを用いた地中に生息する食害虫探査システム
本村和磨; 角田真興; 村上小百合; 小池卓二; 本間恭二
Oral presentation, Japanese, 日本機械学会,2006年度年次大会
Sep. 2006

換気チューブを利用した鼓膜加振デバイスの試作と評価
添田晃弘; 小池卓二; 村上小百合; 本間恭二
Oral presentation, Japanese, 日本機械学会,2006年度年次大会
Sep. 2006

ニューラルネットワークを用いた屋外石油タンクの擬似ＡＥ源位置標定
村上小百合; 竹田智; 本間恭二; 小池卓二; 山本純大; 山田實; 湯山茂徳
Oral presentation, Japanese, 日本機械学会,2006年度年次大会
Sep. 2006

耳小骨可動性計測装置の開発 ―プロトタイプの検証とその改良―
篠崎真希; 小池卓二; 本間恭二; 村上小百合
Oral presentation, Japanese, 日本機械学会,第18回バイオエンジニアリング講演会
Jan. 2006

開放耳管の変形挙動における個人差の影響－有限要素モデルによる解析
五味田愼一; 小池卓二; 本間恭二; 村上小百合; 小林俊光
Oral presentation, Japanese, 日本機械学会第16回バイオフロンティア講演会,日本機械学会第16回バイオフロンティア講演会
Nov. 2005

骨入力音が蝸牛に到達する経路の周波数依存性
鈴木 晃; 小池 卓二; 本間 恭二; 村上小百合
Oral presentation, Japanese, 日本機械学会第16回バイオフロンティア講演会,日本機械学会第16回バイオフロンティア講演会
Nov. 2005

骨加振時に発生する外耳道内音圧が音の知覚に及ぼす影響
鈴木 晃; 小池卓二; 本間恭二; 村上小百合
Oral presentation, Japanese, JSME
Sep. 2005

耳小骨可動性計測装置の開発―レーザードップラ振動計による計測結果との比較評価―
篠崎真希; 小池卓二; 濱西伸治; Merchant Saumil; 本間恭二; 村上 小百合; 和田 仁
Oral presentation, Japanese, 日本機械学会年次大会,日本機械学会年次大会
Sep. 2005

電磁力を利用した低侵襲植え込み型補聴器の開発
添田晃弘; 小池卓二; 本間恭二; 村上小百合; 和田 仁
Oral presentation, Japanese, 日本機械学会年次大会,日本機械学会年次大会
Sep. 2005

咽頭圧変化による開放耳管の変形挙動解析
五味田愼一; 小池卓二; 本間恭二; 村上小百合; 小林俊光
Oral presentation, Japanese, 日本機械学会年次大会,日本機械学会年次大会
Sep. 2005

マイクロ波を利用した地中に生息する食害虫の探査システム
本村和磨; 長島大介; 本間恭二; 小池卓二; 村上小百合; 小谷野伸二; 伊藤 綾
Oral presentation, Japanese, 日本機械学会年次大会,日本機械学会年次大会
Sep. 2005

風荷重を受ける樹木の根の支持機構に関する一考察
本間恭二; 堀 徳源; 小池卓二; 村上小百合
Oral presentation, Japanese, 日本機械学会年次大会,日本機械学会年次大会
Sep. 2005

超音波波形の特徴を考慮したニューラルネットワークによる鋳鉄の摩擦圧接部の評価
武藤光広; 本間恭二; 村上小百合; 小池卓二; 小方智寿; 関口謙一郎
Oral presentation, Japanese, 日本機械学会年次大会,日本機械学会年次大会
Sep. 2005

スラッジを内蔵した屋外石油タンクのニューラルネットワークによる擬似AE源位置標定
竹田 智; 本間恭二; 小池卓二; 村上小百合; 山田 實
Oral presentation, Japanese, 日本機械学会年次大会,日本機械学会年次大会
Sep. 2005

骨導入力音の伝達経路の解明
鈴木晃; 小池卓二; 本間恭二
Oral presentation, Japanese, 日本機械学会関東支部第11期総会・講演会
Mar. 2005

ＡＥ法による石油タンク底部の腐食損傷評価に及ぼすスラッジの影響，－表面探傷シンポジウム－
山田實; 真家敦子; 廣川幹浩; 本間恭二; 湯山茂徳; 李正旺
Oral presentation, Japanese, 非破壊検査協会
Jan. 2005

ムラサキイガイのはく離シミュレーション
青木路人; 本間恭二; 村上小百合; 小池卓二
Oral presentation, Japanese, 日本機械学会バイオエンジニアリング講演会
Jan. 2005

ＡＥ波伝播に及ぼすスラッジの影響
山田實; 真家敦子; 廣川幹浩; 本間恭二; 湯山茂徳; 李正旺
Oral presentation, Japanese, 日本高圧力技術協会講演会
Dec. 2004

オゾン環境下におけるヤマモミジのアコースティックエミッション応答
田村悠; 本間恭二; 村上小百合; 小池卓二
Oral presentation, Japanese, 日本機械学会年次大会
Sep. 2004

ニューラルネットワークによる鋳鉄の摩擦圧接部の非破壊評価
武藤光広; 野中雅允; 本間恭二; 村上小百合; 小池卓二; 小方智寿; 関口謙一郎
Oral presentation, Japanese, 日本機械学会年次大会
Sep. 2004

ニューラルネットワークを利用した不均質材料の接着面の音響インピーダンス解析
家元利幸; 本間恭二; 小池卓二; 村上小百合
Oral presentation, Japanese, 日本機械学会中国四国支部講演会
Mar. 2004

ニューラルネットワークを利用した鋼板の腐食位置標定
稲葉藍子; 本間恭二; 小池卓二; 村上小百合
Oral presentation, Japanese, 日本機械学会中国四国支部講演会
Mar. 2004

鼓膜穿孔時のヒト中耳伝音特性
村上小百合; 本間恭二; 小池卓二
Oral presentation, Japanese, 日本機械学会バイオエンジニアリング講演会
Jan. 2004

水ストレスを与えたイチョウ苗木から発生するＡＥの乾燥パラメータによる影響
矢作陽一; 本間恭二; 村上小百合; 小池卓二; 本村和麿
Oral presentation, Japanese, 日本機械学会バイオエンジニアリング講演会
Jan. 2004

クラスタ内の内部統計量を考慮した繰り込み群分子動力学の検証シミュレーション
山田耕一郎; 本間恭二; 武澤伸浩; 稲村豊四郎
Oral presentation, Japanese, 日本機械学会計算力学講演会
Nov. 2003

ムラサキイガイ面盤の対ガラス接着強度の時間的変化
青木路人; 村上小百合; 小池卓二; 本間恭二
Oral presentation, Japanese, 日本機械学会第14回バイオフロンティア講演会
Sep. 2003

低侵襲完全植え込み型補聴器の開発
青木智史; 小池卓二; 本間恭二; 和田仁
Oral presentation, Japanese, 日本機械学会第14回バイオフロンティア講演会
Sep. 2003

ムラサキイガイ面盤の対物接着強度について
本間恭二; 鈴木理佳; 村上小百合
Oral presentation, Japanese, 日本機械学会年次大会
Aug. 2003

繰り込み群分子動力学を用いたシリコン熱伝導シミュレーション
山田耕一郎; 本間恭二; 稲村豊四郎; 武澤伸浩
Oral presentation, Japanese, 日本機械学会計算力学講演会
Nov. 2002

オゾン環境下におけるイチョウのＡＥ応答
村上小百合; 本間恭二; 小林創
Oral presentation, Japanese, 農業機械学会年次大会
Sep. 2002

乾燥ストレスを受けたイチョウから発生するＡＥの周波数について
小林創; 村上小百合; 本間恭二; 本村和麿
Oral presentation, Japanese, 農業機械学会年次大会
Sep. 2002

超音波を利用したCBN砥石の接着不良の検査
本間恭二; 田代大介; 高田篤人
Oral presentation, Japanese, 精密工学会秋季大会学術講演会講演論文集
Sep. 2001

古代文字画像の視認性向上に関する研究
竹内康弘; 本間恭二
Oral presentation, Japanese, 精密工学会秋季大会学術講演会講演論文集
Sep. 2001

微小切削シミュレーションにおける系の境界条件の影響について
山田耕一郎; 本間恭二
Oral presentation, Japanese, 日本機械学会年次大会講演論文集
Aug. 2001

損傷した動物表皮の修復シュミレーション
田口裕一; 本間恭二
Oral presentation, Japanese, 日本機械学会関西支部第76期定期総会講演会講演論文集
Mar. 2001

ニューラルネットワークを利用したエルボ型管継手における疑似AE源位置標定について
岡村由香; 本間恭二
Oral presentation, Japanese, 日本機械学会九州支部第54期総会講演会講演論文集
Mar. 2001

ムラサキイガイの接着強度の測定
岡林俊輔; 本間恭二
Oral presentation, Japanese, 日本機械学会九州支部第54期総会講演会講演論文集
Mar. 2001

ニューラルネットワークによる模型タンク底板のＡＥ源位置標定
真家敦子; 山田實; 本間恭二
Others, Japanese, 消防研究所報告、91
Mar. 2001

ニューラルネットワークを用いたCBN砥石の接着不良検査の精度向上
草薙 卓; 本間恭二; 田代大介
Oral presentation, Japanese, 精密工学会秋季大会学術講演会講演論文集
2001

境界温度を時系列で変化させた分子動力学熱伝導シュミレーション
山田耕一郎; 本間恭二
Oral presentation, Japanese, 日本機械学会第13回計算力学講演会講演論文集
Nov. 2000

ニューラルネットワークによる落石位置標定の高精度化
本間恭二; 日野隆行
Oral presentation, Japanese, 第19回日本自然災害学会学術講演会講演概要集
Nov. 2000

落石用センサーのためのウェーブガイドについて
竹ノ内崇; 本間恭二
Oral presentation, Japanese, 第19回日本自然災害学会学術講演会講演概要集
Nov. 2000

ニューラルネットワークを用いたＡＥ源位置標定-石油タンク底版への適用について-
真家敦子; 山田實; 本間恭二
Others, Japanese, 消防研究所報告，89
Mar. 2000

流体力を受けたアクチンフィラメントの応力解析
村上小百合; 本間恭二
Oral presentation, Japanese, 日本機械学会第12回バイオエンジニアリング部門講演会
Jan. 2000

地上部に風圧を受ける樹木の根系の応力分布
本間恭二; 宮澤和宏; 村上小百合
Oral presentation, Japanese, 日本機械学会第12回バイオエンジニアリング部門講演会
Jan. 2000

地上部に風圧を与えた直根系植物の根の生長方向
本間恭二; 高橋輝泰; 小南 敬; 村上小百合
Oral presentation, Japanese, 日本機械学会第12回バイオエンジニアリング部門講演会
Jan. 2000

超微小切削シミュレーションにおける境界上の温度分布に関する一考察
山田耕一郎; 本間恭二
Oral presentation, Japanese, 日本機械学会第12回計算力学講演会講演論文集
Nov. 1999

落石の位置標定方法について
本間恭二; 金子克己; 五島 賢; 村上小百合
Oral presentation, Japanese, 日本自然災害学会学術講演会講演概要集
Oct. 1999

ニューラルネットワークによる落石位置標定
日野隆行; 本間恭二; 岡村由香; 白井 純; 小澤 尚
Oral presentation, Japanese, 日本自然災害学会学術講演会講演概要集
Oct. 1999

ニューラルネットワークを用いたAE源の位置標定精度について
真家敦子; 本間恭二; 山田實
Oral presentation, Japanese, 日本非破壊検査協会秋季講演大会講演論文集
Oct. 1999

多様なアルゴリズムによるタイ手書き文字認識
Veerathanabutr Poonlap; 本間恭二
Oral presentation, Japanese, 情報処理学会第59回全国大会講演論文集
Sep. 1999

引張刺激を与えた筋芽細胞の動的応答について
村上小百合; 本間恭二; 跡見順子
Oral presentation, Japanese, 日本機械学会中国四国支部第37期総会講演会
Mar. 1999

ニューラルネットワークによるセグメント砥石の接着面の超音波探傷
本間恭二; 田代大介
Oral presentation, Japanese, 日本機械学会東海支部第48期総会講演会
Mar. 1999

顕微鏡上細胞伸張装置の改良と細胞の応答
村上小百合; 田中幹人; 本間恭二; 山下雅道; 跡見順子
Oral presentation, Japanese, 日本宇宙生物科学会第12回大会
Nov. 1998

CBNセグメント砥石の接着検査の自動化
本間恭二; 高田篤人
Oral presentation, Japanese, 精密工学会北海道支部学術講演会
Aug. 1998

積層材料欠陥の超音波診断（異なるニューラルネットワークモデルとの比較）
本間恭二; 高田篤人
Oral presentation, Japanese, 日本機械学会通常総会講演会
Apr. 1998

The Sessile Organisms Society of Japan

The Japan Society of Agricultural Machinery

Japan Society for Natural Disaster Science

The Japan Society of Abrasive Technology

The Japanese Society for Non-Destructive Inspection

The Society of Materials Science

Japan Society of Precision Engineering

Japan Society of Mechanical Engineers

ニューラルネットワークを利用した知能化超音波探傷システム
Patent right, 本間恭二, 特願2002-85922, Date applied: 22 Mar. 2002, 本間恭二，日本ITeS株式会社，クレトイシ株式会社, 特開2003-279550, Date announced: 02 Oct. 2003, 特許第4167841号, Date issued: 08 Aug. 2008

生物検出装置
Patent right, 特願2005-35840, Date applied: 14 Feb. 2005