巻号一覧
29 巻 (2003)
- 6 号 p. 205-
- 5 号 p. 165-
- 4 号 p. 123-
- 3 号 p. 81-
- 2 号 p. 41-
- 1 号 p. 1-
29 巻, 4 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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バイオミメティックス法生駒 俊之, 田中 順三2003 年 29 巻 4 号 p. 123-128
発行日: 2003/07/15
公開日: 2009/08/11
ジャーナル フリーPDF形式でダウンロード (5223K) -
土屋 孟2003 年 29 巻 4 号 p. 129-135
発行日: 2003/07/15
公開日: 2009/08/11
ジャーナル フリーPDF形式でダウンロード (5546K) -
繊維破断部近傍の界面はく離を考慮したクリープ破断モデル小柳 潤, 川田 宏之, 清田 原哉2003 年 29 巻 4 号 p. 136-142
発行日: 2003/07/15
公開日: 2009/08/11
ジャーナル フリーThis paper describes a creep rupture model considering the interfacial debonding in broken fibers in unidirectional polymer matrix composites reinforced by glass fibers. Interfacial debonding was accompanied with fiber breaks under the tensile load, depended on the fiber stress at the simultaneous fiber breaks. The interfacial debonding length, fiber strength and an interfacial shear stress were investigated by the fragmentation test. A vinylester/glass fiber interface's properties were investigated by the fragmentation test. Subsequently, the debonding length and a stress recovery length were quantitatively studied and it was found out that the relation between the strength and the length of fiber was linear. The debonding length was calculated by a measure of the distance between the fiber breaking faces. The interfacial debonding length was taken into the Curtin's fracture model. Moreover, the creep test of the unidirectional composites, it was vinylester resin matrix reinforced by glass fibers, was performed to investigate the creep constants. Then, the prediction in the use above parameters of the creep rupture time was discussed.抄録全体を表示PDF形式でダウンロード (1777K) -
小笠原 俊夫, 石川 隆司, 横田 力男2003 年 29 巻 4 号 p. 143-149
発行日: 2003/07/15
公開日: 2009/08/11
ジャーナル フリーMulti-walled carbon nanotubes (MW-CNTs) were dispersed throughout a thermosetting polyimide “Triple A PI” (TriA-PI). TriA-PI is a newly developed phenylethynyl terminated polyimide, and exhibits excellent mechanical properties and processability with high glass transition temperature (Tg>300°C). The resulting composites containing 3.3, 7.7, 14.3 wt% MW-CNT exhibited relatively good dispersion. Tensile tests on the composites showed an increase in the elastic modulus and the yield strength, and decrease in the failure strain. Dynamic mechanical analysis (DMA) showed an increase in the glass transition temperature with incorporation of the MW-CNTs. The experimental result suggested that the MW-CNTs are acting as macroscopic crosslinks, and are further immobilizing the polyimide chains at elevated temperature.抄録全体を表示PDF形式でダウンロード (7166K) -
斉藤 博嗣, 濱田 泰以2003 年 29 巻 4 号 p. 150-155
発行日: 2003/07/15
公開日: 2009/08/11
ジャーナル フリーIn actual application fields to utilize the composite materials for an energy absorption component, it is necessary to take into account the effects of jointing with the other components. Therefore the effects of bolted jointing between composite pipe and steel column on the energy absorption property of composite pipe were evaluated in this study. As the result, composite pipe jointing by eight M8 bolts to steel column exhibited progressive crushing, and energy absorption property of composite pipe bolted joint was almost equal to that of the elemental composite pipe itself. In order to reveal the condition to be exhibited progressive crushing in composite pipe bolted joint, the compression strength of composite and the shear strength of bolt were focused, and two condition equations were proposed. These condition equations were evaluated by using to the experimental results, and it was found that the experimental results were well consistent with the simulation by the proposed equations. Accordingly, it is possible to apply these equations to design of the composite pipes for actual energy abosorber components jointed to the other components by bolts.抄録全体を表示PDF形式でダウンロード (4198K)
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