ＦＲＰの強度および寿命特性の変動に及ぼす応力集中の影響について

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タイトル別名
  • Influence of Stress Concentration on Spread of Strength and Fatigue Life in FRP
  • FRP ノ キョウド オヨビ ジュミョウ トクセイ ノ ヘンドウ ニ オヨボス

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抄録

The fiber reinforced plastics (FRP) have recently been attracting general attention as a light weight structural material. It is important in design of FRP structural components to establish a general concept which can account for those properties peculiar to composite materials. Moreover, an engineer often confronts some problems when he tries to design complex full scale structures from the design data obtained from small scale characterization tests on laboratory specimens. The estimation of structural reliability from labolatory data requires at least the following three penalty factors involved in the determination of the design stress in the component: The scale effect, the shape effect and the complexity factory. These factors were reported by Halpin for graphite-epoxy and glass-epoxy laminates.<br>In this study, static tensile and cyclic loading were imposed on the specimens with a single and multiple holes as well as without it. The relations between the breaking strength or fatigue life and the shape or complexity effect were discussed in plain-woven glass fiber cloth reinforced plastics. The results computed with a consideration of extreme statistics and stress concentration showed a good agreement with the experimental data.

収録刊行物

  • 材料

    材料 28 (309), 504-509, 1979

    公益社団法人 日本材料学会

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