巻号一覧
2 巻 (1976)
- 4 号 p. 139-
- 3 号 p. 99-
- 2 号 p. 53-
- 1 号 p. 1-
2 巻, 2 号
選択された号の論文の7件中1～7を表示しています
- |<
- <
- 1
- >
- >|
-
林 毅1976 年 2 巻 2 号 p. 53-59
発行日: 1976/04/30
公開日: 2009/08/11
ジャーナル フリーPDF形式でダウンロード (900K) -
小林 啓佑, 北村 厚1976 年 2 巻 2 号 p. 60-65
発行日: 1976/04/30
公開日: 2009/08/11
ジャーナル フリーPDF形式でダウンロード (2192K) -
石川 敏功, 寺西 春夫1976 年 2 巻 2 号 p. 65-71
発行日: 1976/04/30
公開日: 2009/08/11
ジャーナル フリーPDF形式でダウンロード (791K) -
北條 英光, 津田 健, 桑原 諸彰1976 年 2 巻 2 号 p. 72-79
発行日: 1976/04/30
公開日: 2009/08/11
ジャーナル フリーNumerous works concerning the chemical resistance of fiberglass plastics have been reported, while little information is available on the corrosion behavior under stressing. In this study, conventional immersion tests and creep-rupture tests in various chemical environments were made to correlate both test results and also to clarify the effects of stress and other factors on the corrosion behavior and the mechanism. The materials tested consisted of mainly a vinyl ester resin and E-glass chopped strand mat (G. C. 60wt%). Corrosive environments used were H2O and NaCl, HCl, H2SO4 and NaOH solutions. As a result of testing, some correlations were found between immersion and creep-rupture tests, and two or three stage degradation mechanisms were recognized. However, the transition time (tk) from the first degradation stage to the second one was remarkably affected by the stressing. Therefore, the effect is important from the designing points of view. To investigate the degradation mechanisms, weight measurements, scanning electron microscopy and infrared technique were further made. The first mechanism depends on the physical degradation by swelling and the hydrolysis of resin matrix. In the second mechanism, the degradation of the glass-resin interface becomes dominant. Then, tk suggests the initiation of chemical degradation at the interface.抄録全体を表示PDF形式でダウンロード (3665K) -
中村 克孝, 美馬 源次郎1976 年 2 巻 2 号 p. 80-87
発行日: 1976/04/30
公開日: 2009/08/11
ジャーナル フリーThe method of alignment of staples, such as whiskers, is one of the important processes used to make fiber reinforced composite materials. The fluid mechanical and the utilizing plastic flow methods have been devised for the purpose. As for the fluid mechanical method, a novel method was developed by Calow, C. A. and Wakelin, R. J. However, they didn't mention on the viscous effect of working liquid, which is a character of importance, on the alignment of staples. Moreover, there are a few mistaken parts in their theoretical analyses. In theoretical analyses, we considered the viscous effect of the working liquid on the alignment of staples. And using the experimental apparatus which consists of a tank and a rectangular duct, we researched the effects of the length of a duct, the aspect ratio of staples and the velocity and viscosity of the working liquid on the alignment of staples.抄録全体を表示PDF形式でダウンロード (5406K) -
宮入 裕夫, 永井 正洋, 村松 篤良1976 年 2 巻 2 号 p. 88-92
発行日: 1976/04/30
公開日: 2009/08/11
ジャーナル フリーFiber reinforced plastics are widely used for many purposes as structural components and functional materials, which are composed with fiber and plastic matrix . The hybrid constructions of FRP, however, are well known as more effective for the improvement of these properties of each materials for the practical use. So, this paper discusses about the flexural strength and the fatigue strength of the hybrid FRP which are constructed in sandwich and canapé structures. Sandwich construction is composed with symmetrically laminated layers (CFRP/GFRP) and canapé construction is composed into an asymmetric structure, which consists of two layers of PMMA and KFRP (organic fiber/PMMA). The results of these studies are as follows : 1) As to the improvement of flexural strength of these structures it is shown that canapé construction is superior to sandwich construction . But canapé construction is not feasible under random loads for which the stress directions, are unknown. 2) Fracture of canapé construction is conducted by the tensile mode of KFRP and reinforced component, but not by the flexural failure of KFRP. But the fracture mode of sandwich construction is observed as the interlaminer shear, and the improvement of the flexural properties to be expected is not obtained. 3) On the fatigue properties of these construction, it is found that those S-N curves show the linear relationships in semilogarithmic representations. The ratios of fatigue limits (N=107) to flexural strength of the sandwich and the canapé constructions are 0.256 and 0.366 respectively.抄録全体を表示PDF形式でダウンロード (2077K) -
1976 年 2 巻 2 号 p. 93-96
発行日: 1976/04/30
公開日: 2010/02/08
ジャーナル フリーPDF形式でダウンロード (591K)
- |<
- <
- 1
- >
- >|