-
Natsumi Nakamura, Kenji Amaya, Hitoshi Mukai, Yasunori Tsukimura
Article type: Article
Session ID: 1004
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Takuto Kubori, Seiji Ioka, Siro Kubo
Article type: Article
Session ID: 1005
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Yuya TOMINAGA, Tomoaki TSUJI
Article type: Article
Session ID: 1006
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Tatsuya KIGURE, Kenji AMAYA, Yuki ONISHI
Article type: Article
Session ID: 1007
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Ryuji ENDO, Satoshi KUROKAWA, Nobuyoshi TOSAKA
Article type: Article
Session ID: 1008
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Motoharu KATAOKA, Hayato SHINMURA, Akira MURAKAMI, Shintaro OHNO, Kazu ...
Article type: Article
Session ID: 1009
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
[in Japanese], [in Japanese]
Article type: Article
Session ID: 1010
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Polymeric material is useful in daily life. Especially, Polypropylene has superior character in many fields. In this study, inelastic deformation properties of Polypropylene are obtained by using the inverse analysis on load-depth curve measured by micro-indentation tests. The new expression of polypropylene's rate dependent constitutive equation is presented and the Kalman's filter is used in the inverse analysis. It is found that the analytical determined inelastic constitutive equations are almost same as the actual stress-strain relations of Polypropylene which are obtained by compression tests at various strain rate.
View full abstract
-
Masahiro ARAI, Naoki HIRAMATSU, Yoshitaka SATOH, Hiroaki ITO, Hideo Ch ...
Article type: Article
Session ID: 1011
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
In the present paper, an interfacial strength between thin film and substrate is evaluated by laser ultrasonic waves. The laser beam is irradiated on the substrate which have a thin film on the lower side. The elastic-ultrasonic wave is excited by the laser beam, and it propagates in the transverse direction for the plate. The supersonic wave reflects on the back of monotony, becomes an expansion wave, and reaches the interface. Finally, delamination on the interface is caused by the expansion wave. In the present study, the interfacial stress is estimated by inverse analysis using Laplace-transformed boundary element method. The displacement history on the surface of the specimen can be related by interfacial stress by transfer function. The transfer function can be obtained by numerically by 3-dimensional analysis with boundary element method. The test specimens made from Al substrate and Ti thin film are used in the present study. It is confirmed that the interfacial strength between thin film and substrate is 30.5MPa from the present investigation.
View full abstract
-
Jiawei XIANG, Toshiro MATSUMOTO
Article type: Article
Session ID: 1012
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Yuki WATAKA, Takashi OHIGASHI, Shiro KUBO
Article type: Article
Session ID: 1013
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Ryuusuke KAWAMURA, Kiyohiko IKEDA, Hiroyuki KINOSHITA
Article type: Article
Session ID: 1101
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Yuzo ISHIBE, Hisao HASEGAWA
Article type: Article
Session ID: 1102
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
This paper investigates on the stresses, displacements and natural frequencies of an elastic thick walled square cylinder subjected to harmonically vibrating internal pressures. We show the influences of the thickness and the radius at the corners of cylinder on the natural frequencies. In a previous paper, a method of fundamental solution, that is body force distribution method, was presented for the problem. Here we apply it to the present problem.
View full abstract
-
Fumihiro Ashida, Sei-ichiro Sakata
Article type: Article
Session ID: 1103
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Shunsuke HIRATSUKA, Hisao HASEGAWA, Yuuki GOTO
Article type: Article
Session ID: 1104
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
This paper investigates on the stress distributions and interface stresses of an infinite elastic plate with three slender rigid inclusions under tension. In a previous paper, it was shown that the tensile force acting on the central inclusion was smaller than that of the outside inclusion. This paper shows the influences of the length and distance between inclusions on the interface stresses.
View full abstract
-
Yoshihiro OOTAO, Masayuki ISHIHARA
Article type: Article
Session ID: 1105
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Fumiya TOKUMARU, Ryuusuke KAWAMURA, Kiyohiko IKEDA, Hiroyuki KINOSHITA
Article type: Article
Session ID: 1106
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Sei UEDA, Takumi UEDA, Tohru IOGAWA
Article type: Article
Session ID: 1107
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Thermoelectroelastic response of Two parallel axisymmetric cracks in a plate of a functionally graded piezoelectric material (FGPM) is studied under thermal shock loading conditions. It is assumed that the thermoelectroelastic properties of the strip vary continuously along the thickness of the strip, and that the crack faces are supposed to be insulated thermally and electrically. By using both the Laplace and Hankel transforms, the thermal and electromechanical problems are reduced to two systems of singular integral equations. The singular integral equations are solved numerically, and a numerical method is then employed to obtain the time dependent solutions by way of a Laplace inversion technique. The intensity factors versus time for various geometric parameters are calculated.
View full abstract
-
Sei UEDA, Yoshihito IKEDA
Article type: Article
Session ID: 1108
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
The thermoelectroelastic fracture of a functionally graded piezoelectric material (FGPM) strip with two parallel cracks under thermal loading is considered. The crack faces are supposed to be insulated thermally and electrically. Fourier transform techniques are used to reduce the mixed boundary value problems to two systems of singular integral equations. The singular integral equations are solved by using the Gauss-Jacobi integration formula. Numerical calculations are carried out, and detailed results are presented to illustrate the influence of the parameters of the geometric parameters on the stress and electric displacement intensity factors.
View full abstract
-
Hiromasa TATEMATSU, Hisao HASEGAWA
Article type: Article
Session ID: 1109
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
A fundamental solution is shown for axisymmetric torsion problems of radially inhomogeneous elastic solids. We assume that the modulus of transverse elasticity varies with radial coordinate r in form of a power. The fundamental solution shown here is defined as a solution to the problem of the inhomogeneous elastic solid subjected to a torsional body force acting along a circle.
View full abstract
-
Akira IWASAKI, Yasutomo UETSUJI, Kazuyoshi TUCHIYA
Article type: Article
Session ID: 1110
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
In this paper, we investigated on crystal structure of complex perovskite-type oxides ABO_3 through first-principles calculation to develop novel biocompatible piezoelectric materials. Firstly, biocompatible homoelements were set to B site of new materials and 12 combinations were found. Secondly, their insulating properties were distinguished with electric band structure. Then, phonon properties in cubic structures were analyzed and the possibilities of structural phase transition from cubic structure to asymmetry one were investigated to get a high piezoelectricity. Finally, their characteristics of stable structures were analyzed.
View full abstract
-
Sei UEDA, Hirokazu HATANO
Article type: Article
Session ID: 1111
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
The thermo-electro-mechanical fracture problem of an infinite piezoelectric material containing a T-shaped crack is considered in this study. The problem is solved for an infinite piezoelectric material that is under a uniform heat flow, uniform mechanical loads in two directions and a uniform electric load far away from the crack region. The crack faces are supposed to be completely insulated. By using the Fourier transform, the thermal and electromechanical problems are reduced to systems of singular integral equations, respectively. The singular integral equations are solved numerically. Numerical calculations are carried out, and detailed results are presented to illustrate the influence of the thermo-electro-mechanical interaction on the stress and electric displacement intensity factors.
View full abstract
-
Masayoshi TSUTSUMI, Yasutomo UETSUJI, Hiroyuki KURAMAE, Kazuyoshi TSUC ...
Article type: Article
Session ID: 1112
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Yasutomo Uetsuji, Hiroyuki Kuramae, Kazuyoshi Tsuchiya
Article type: Article
Session ID: 1113
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Ken-ichi OHSUMIMOTO, Sei-ichiro SAKATA, Fumihiro ASHIDA
Article type: Article
Session ID: 1114
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Koichi KAIZU, Masahiro KUSAKA, Masaaki KIMURA
Article type: Article
Session ID: 1115
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Masato MATSUDA, Koichi KAIZU, Masahiro KUSAKA, Masaaki KIMURA
Article type: Article
Session ID: 1117
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Yosuke JOKEI, Sei-ichiro SAKATA, Fumihiro ASHIDA
Article type: Article
Session ID: 1118
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Satoshi HANAKI, Masanori NAKATANI, Hitoshi UCHIDA, Tetsusei KURASHIKI
Article type: Article
Session ID: 1119
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Teruyuki KONGOU, Yasutomo UETSUJI, Hiroyuki KURAMAE, Masaru ZAKO
Article type: Article
Session ID: 1120
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Tetsuya MATSUDA, Shinya KANAMARU
Article type: Article
Session ID: 1121
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
In this study, the elastic-viscoplastic behavior of plain-woven GFRP laminates in which plain fabrics are stacked with misalignment is analyzed using a homogenization theory. For this, a novel boundary condition for unit cell analysis is proposed based on the periodicity and point-symmetry of internal structures in plain-woven laminates. Using the boundary condition, the homogenization theory for non-linear time-dependent composites developed by the authors is rebuilt for plain-woven laminates with misaligned plain fabrics. As an application of the present theory, the elastic-viscoplastic analysis of plain-woven glass fiber/epoxy laminates with misaligned plain fabrics is performed.
View full abstract
-
Sei-ichiro SAKATA, Fumihiro ASHIDA
Article type: Article
Session ID: 1122
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Naoki Yamamoto
Article type: Article
Session ID: 1201
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Although estimating interlaminar fracture strength is a key issue in the design of composite structures, interlaminar fracture toughness tests are usually conducted only for unidirectional laminates. Since multidirectional laminates are used in composite structures, an understanding of delamination characteristics and prediction techniques for multidirectional laminates are needed. In this paper, the tensile tests of the L-shaped laminated specimens with the initial delamination were conducted for 0//90 interface. In addition, the numerical study by VCCT(Virtual Crack Closure Techniques) was performed to predict the test results.
View full abstract
-
Masanori Kikuchi, Yoshitaka Wada, Kazuhiro Suga, Yuichi Shintaku, Shin ...
Article type: Article
Session ID: 1202
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Koichi MASAKI, Jinya KATSUYAMA, Kunio ONIZAWA
Article type: Article
Session ID: 1203
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Kosuke TAKANARITA, Satoyuki TANAKA, Shigenobu OKAZAWA, Hiroshi OKADA
Article type: Article
Session ID: 1204
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Atsushi HOZUKI, Naoya TADA, Makoto UCHIDA
Article type: Article
Session ID: 1205
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Kazutake KOMORI
Article type: Article
Session ID: 1206
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Tetsuya YAMAGUCHI, Kenichi SHIMIZU, Takaaki SARAI
Article type: Article
Session ID: 1207
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Toshio NAGASHIMA, Yasuhiro NOGUCHI, Naoki MIURA
Article type: Article
Session ID: 1208
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Hiroshi OKADA, Kohmei SATOH, Shogo OHATA
Article type: Article
Session ID: 1209
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
[in Japanese], [in Japanese], [in Japanese]
Article type: Article
Session ID: 1210
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Masayuki KAMAYA, Takahiro SASSA, Masanori KIKUCHI
Article type: Article
Session ID: 1211
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Toshio NAGASHIMA
Article type: Article
Session ID: 1212
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Ryutaro DAIMON, Hiroshi OKADA
Article type: Article
Session ID: 1213
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Takayuki YAMADA, Toshiro Matsumoto, Toru Takahashi
Article type: Article
Session ID: 1301
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Hiroshi HASHIMOTO, Min-Geun KIM, Kazuhisa ABE, Seonho CHO
Article type: Article
Session ID: 1302
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
A topology optimization method for phononic crystals is developed for the design of sound barriers, using the level set approach. An optimal shape of periodic inclusions is found by minimizing the norm of transmittance for given incident waves at a frequency. We consider a layered structure which is composed of scatterers arranged periodically in horizontal direction while finite inclusions are distributed in vertical direction. The boundary conditions for the lower and the upper boundary of the unit cell are described by impedance matrices. Through a numerical example, the feasibility of the proposed method is demonstrated.
View full abstract
-
Garuda FUJII, Toshiro MATSUMOTO, Toru TAKAHASHI, Takayuki YAMADA, Tsuy ...
Article type: Article
Session ID: 1303
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Kouhei WADA, Akira NAKAJIMA, Junpei TAKIZAWA, Masayuki NAKAMURA
Article type: Article
Session ID: 1304
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Organic light emitting diode (OLED) is used for lighting utilized as display of television, mobile phone, digital camera, and so on. Luminescence spectrum and out-coupling efficiency of light from OLED structure depends on film thickness and optical indexes of thin film materials. The structural optimization of thin films is useful to satisfy a design specification. We developed the system which could simultaneously optimize film thickness and optical indexes of each layer by genetic algorithm. In this report, results of the optimization of OLED to increase the out-coupling efficiency with target spectrum are shown.
View full abstract
-
[in Japanese], [in Japanese], [in Japanese]
Article type: Article
Session ID: 1305
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Yuki YAKUSHIGAWA, Kenji TSURUTA, Kazuhiro Fujimori
Article type: Article
Session ID: 1306
Published: October 08, 2011
Released on J-STAGE: June 19, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Acoustic-wave propagation on semiconductor surface is studied by numerical simulation based on the molecular dynamics (MD) method. We investigate the effect of crystallographic anisotropy, finiteness of thickness of crystal slab, and the presence of defects on the wave propagations. Based on these analyses, we attempt to design atomic-level surface structure of Si for a surface acoustic-wave filter and lenses.
View full abstract