巻号一覧
34 巻 (2008)
- 6 号 p. 211-
- 5 号 p. 173-
- 4 号 p. 133-
- 3 号 p. 95-
- 2 号 p. 51-
- 1 号 p. 3-
34 巻, 6 号
選択された号の論文の3件中1～3を表示しています
- |<
- <
- 1
- >
- >|
研究論文
-
邉 吾一, 杉本 直, 青木 義男, 金 炯秀, 飯塚 由佳2008 年 34 巻 6 号 p. 211-218
発行日: 2008年
公開日: 2010/07/15
ジャーナル フリーCarbon fiber reinforced plastic (CFRP) laminates are used in various industrial fields because they have excellent properties of the specific strength and specific stiffness. The CFRP has a potential of weight reduction in the automotive structure which can contribute to the improvement of mileage as well as the reduction of carbon dioxide. On the other hand, the safety issue in case of collision should be also clarified for employing the CFRP as automotive structures. In this paper, Al alloy beams reinforced with the CFRP were examined by both experiments and numerical analysis as candidates to replace the conventional steel door guarder beam used inside the automotive door. The experimental relations of impact loading to the deformation of the Al alloy beams with different thicknesses, widths and types of CFRP showed a good agreement with those of numerical results. These results show that the numerical method developed here is useful for estimating the impact behavior of Al guarder beams with CFRP layers.抄録全体を表示PDF形式でダウンロード (1889K) -
鮑 力民, 鎌田 夏葵, 銭 丹娜, 白井 智広, 後藤 卒土民, 剱持 潔2008 年 34 巻 6 号 p. 219-225
発行日: 2008年
公開日: 2010/07/15
ジャーナル フリーA thin cylinder of fiber-reinforced plastics (FRP) material is used as a kind of structure material in large quantities for robot arms, ariplanes and aerospace applications because of its lightweight and high strength. In order to improve the mechanical properties of the cylinder, this study developed the biomimetic design of a thin cylinder with nodes that imitate a bamboo structure by the VaRTM method. The effects of inserted nodes on the bending properties of a thin CFRP cylinder were examined by the four-point bending test. It is evident that the flexural rigidity and bending buckling load were increased; the validity of the node has also been confirrned抄録全体を表示PDF形式でダウンロード (2915K) -
渡辺 圭子, 日下 貴之, 北條 正樹, 福岡 俊康, 石橋 正康2008 年 34 巻 6 号 p. 226-232
発行日: 2008年
公開日: 2010/07/15
ジャーナル フリーThe crack propagation behavior of CFRP laminates reinforced with Zanchor was experimentally investigated to find out the toughening mechanism under the mode II loading. The Zanchor is a novel technique of out-of-plane reinforcement to improve the interlaminar strength by entangling in-plane fibers in the through-thickness direction using special needles. Experimental result demonstrated that the effect of Zanchor process was remarkable for the improvement of mode II interlaminar fracture toughness of composite materials, where the fracture toughness proportionally increased with the Zanchor density. Moreover, broken traces of the fiber bundles oriented to the through-thickness direction were observed, whereas no fiber bridgings. Therefore, it was revealed that the key factor of the increase in mode II fracture toughness would be the breaking energy of fiber bundles, which was different from that under mode I loading.抄録全体を表示PDF形式でダウンロード (2048K)
- |<
- <
- 1
- >
- >|