巻号一覧
27 巻 (2001)
- 6 号 p. 257-
- 5 号 p. 219-
- 4 号 p. 181-
- 3 号 p. 137-
- 2 号 p. 89-
- 1 号 p. 1-
27 巻, 3 号
選択された号の論文の6件中1～6を表示しています
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轟 章, 田中 雄樹, 島村 佳伸2001 年 27 巻 3 号 p. 137-145
発行日: 2001/05/15
公開日: 2009/08/11
ジャーナル フリーIn the present study, an electric resistance change method is employed for the identifications of location and size of the embedded delaminations of quasi-isotropic laminates. Indentation tests are conducted to create embedded delamination cracks in the quasi-isotropic laminate of CFRP. Two lines and five columns of electrodes are mounted on the plate surface for measurements of electric resistance changes due to delamination creations. Response surface methodologies are applied to obtain the relation between the delaminations and measured electric resistance changes. As a result, the method can successfully estimate the location and size of embedded delaminations of quasiisotropic laminates, and the effect of the stacking sequence for identification is clarified.抄録全体を表示PDF形式でダウンロード (6374K) -
平山 紀夫, 三木 恭輔2001 年 27 巻 3 号 p. 146-154
発行日: 2001/05/15
公開日: 2009/08/11
ジャーナル フリーThis paper is concerned with the prediction of dynamic viscoelastic and flexural creep behavior for GFRP consisting of short fiberglass and vinyl ester resin. The flexural creep tests were carried out under the various conditions of stress and temperatures. On the other hand, the dynamic viscoelastic tests were carried out under the various temperatures at 25 μm vibration amplitude. The master curves of creep compliance, storage elastic modulus, loss elastic modulus and loss tangent of GFRP were obtained by applying the time-temperature superposition principle to these experimental results. Furthermore, the temperature dependence of the time-temperature shift factors calculated from the flexural creep data was in agreement with that calculated from the dynamic viscoelastic data. On the basis of these results, the creep compliance of GFRP is predicted by using the experimental results of dynamic viscoelastic tests in this paper.抄録全体を表示PDF形式でダウンロード (7904K) -
諏訪 浩史, 剱持 潔2001 年 27 巻 3 号 p. 155-160
発行日: 2001/05/15
公開日: 2009/08/11
ジャーナル フリーCarbon fiber reinforced carbon (C/C) composites were made from multi-layer fabrics which were woven with pitch-based carbon fiber rovings and coaltar pitch matrix. The relationship between the fabric structure and mechanical properties of the multi-layer fabric C/C composite was investigated by tensile, bending, shear and compression tests. The properties were compared with those of plain woven cloth C/C composite. The result are summarized as follows. For the tensile test, it was found that the stress-strain curve of multi-layer fabric C/C composìte was linear, while that of plain woven cloth C/C composite was nonlinear. Consequently, tensile strength of the multi-layer fabric C/C composite was higher than that of plain woven cloth C/C composite. It was clearly shown by the observation of the specimen after shear test that the multi-layer fabric C/C composites have high resistance to the interlaminar shear fracture. From the results of three point bending test for various span-to-hight ratio, it was shown that shear strength of the multi-layer fabric C/C composite is higher than that of plain woven cloth C/C composite, while for bending strength, the relalion is reversed.抄録全体を表示PDF形式でダウンロード (5890K) -
佐野村 幸夫2001 年 27 巻 3 号 p. 161-166
発行日: 2001/05/15
公開日: 2009/08/11
ジャーナル フリーThis paper examines the fiber orientation and Young's modulus of extruded short-fiber reinforced thermoplastics such as polypropylene. Axial orientation distributions are presented to illustrate the influence of extrusion ratio on the orientation state of the fibrous phase. Fibers are remarkably aligned parallel to the extrusion direction with increasing the extrusion ratio. The orientation state of extruded FRTP is almost uniform through the section. The fiber orientation can be easily controlled by means of ram extrusion. Experimental results also show that Young's modulus of FRTP in extrusion direction follows a linear relation to extrusion ratio because the degree of the molecular orientation and the fiber orientation to be higher with increasing the extrusion. By comparing the prediction of Young's modulus with experimental results, the validity of the model proposed by Cox and Fukuda et al. elucidated. The mean fiber length linearly decreases with increasing extrusion ratio because of the fiber breaking caused by plastic deformation of the matrix. The effect of the fiber breaking on Young's modulus is almost negligible.抄録全体を表示PDF形式でダウンロード (3126K) -
影山 和郎, 邉 吾一, 川田 宏之, 東藤 貢, 北條 正樹, 香山 晃, 船橋 正弘, 西籔 和明, 河井 昌道, 轟 章, 上野谷 敏 ...2001 年 27 巻 3 号 p. 167-172
発行日: 2001/05/15
公開日: 2009/08/11
ジャーナル フリーPDF形式でダウンロード (1012K) -
軽量・高強度・高剛性プラスアルファの付加価値を目指す岩堀 豊2001 年 27 巻 3 号 p. 173-176
発行日: 2001/05/15
公開日: 2009/08/11
ジャーナル フリーPDF形式でダウンロード (3911K)
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