巻号一覧
20 巻 (1994)
- 6 号 p. 215-
- 5 号 p. 173-
- 4 号 p. 131-
- 3 号 p. 91-
- 2 号 p. 57-
- 1 号 p. 1-
20 巻, 2 号
選択された号の論文の5件中1～5を表示しています
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浴室ユニットと感性について狩野 三郎1994 年 20 巻 2 号 p. 57-61
発行日: 1994/04/15
公開日: 2009/08/11
ジャーナル フリーPDF形式でダウンロード (5248K) -
岩井 宏, 植村 益次, 植村 寧夫1994 年 20 巻 2 号 p. 62-66
発行日: 1994/04/15
公開日: 2009/08/11
ジャーナル フリーThe bending testing methods for advanced composite materials have not yet been authorized internationally. The 3-point and 4-point bending methods are not adequate because of local fracture due to stress concentration just beneath the loading points. In the present paper, the three kinds of zig were developed for trial, which could apply the uniform pure bending moment without shear force through the span. Three are, (1) Sliding Frame (SF) type, (2) Rack & Pinion (RP1) type and (3) Rack & Pinion (RP2) type. Both SF and RPl types have the disadvantages to need corrections for the flexural strength and deflection due to the changes of reaction direction or span length, respectively. However, specimens used in experiments using RP2 broke into pieces under axial stress in the fiber direction between both tabs without stress concentration. Flexural strength values under pure bending were more than 30%-50% higher than those under 3-point and 4-point bending methods.抄録全体を表示PDF形式でダウンロード (1677K) -
宇田川 昂, 丸山 誠次, 貴家 恒男, 瀬口 忠男1994 年 20 巻 2 号 p. 67-72
発行日: 1994/04/15
公開日: 2009/08/11
ジャーナル フリーRadiation effects on mechanical properties of the glass fiber-reinforced bisphenol-A type epoxy resin were studied. The threshold dose, where 3-point bending strength started to change, was 30 MGy. Radiation-induced latent degradation within the threshold dose was observed by the analysis of differential modulus from the curve of load against displacement. The differential modulus curves could be divided into two displacement regions. It was concluded through the data of water absorption and observations with scanning acoustic microscopes, that the two regions were due to the debonding of matrix-fiber interface and the micro-cracking in the matrix resin, respectively.抄録全体を表示PDF形式でダウンロード (5324K) -
清水 利弘, 中島 正貴, 村上 澄男, 金川 靖1994 年 20 巻 2 号 p. 73-78
発行日: 1994/04/15
公開日: 2009/08/11
ジャーナル フリーA method of stochastic simulation of damage and failure process of glass mat reinforced plastics is developed, and applies to examine the relation between the strength dispersion and the damage process. A stochastic model for composites having nonuniform distribution of fracture strength is first developed by the use of finite element method. The fracture strength of each element is specified randomly to follow the normal distribution. Then, the global damage process of the material is analyzed by incorporating this model into a finite element code of anisotropic nonlinear elasticity. The damage and failure process of glass mat reinforced plastics in uniaxial tension is analyzed, and the effects of strength dispersion on inelastic behavior and fracture modes are discussed in detail.抄録全体を表示PDF形式でダウンロード (2751K) -
一森 和之, 鞍谷 文保, 元木 信弥, 福田 武人1994 年 20 巻 2 号 p. 79-86
発行日: 1994/04/15
公開日: 2009/08/11
ジャーナル フリーThis paper presents an effective method for obtaining vibration properties of GFRP multilayer printed wiring boards (GFRP-ML-PWB) with various boundary conditions of screwed cramps by using Finite Element Method (FEM). Experiments of vibration of GFRP-ML-PWB based on the impulse frequency response technique are conducted. The experimental results are found to be in good agreement with FEM results, which shows the validity of FEM analysis. Natural frequencies and vibration modes are obtained for various boundary conditions practically in use. It is also shown that the non-dimensional natural frequency determined by the flexural rigidity which is independent of the stacking sequences of can effectively be used to obtain the natural frequencies of various materials.抄録全体を表示PDF形式でダウンロード (3690K)
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