2140 GFRPのき裂進展挙動における水分拡散の影響(S27-4 複合材の強度・評価,S27 複合材料の加工と評価)

概要

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The effect of water on crack propagation resistance by fiber bridging of glass fiber reinforced plastic (GFRP) has been investigated. Specimens were immersed and weighed just before conducting the crack propagation test. Decrease of critical energy release rate by the water was measured as a function. The critical energy release rate of the matrix decreased with increase of the water absorption. The crack resistance of a bridged crack varied with the water absorption. To investigate the variation in the bridging mechanism under the water environment, we calculated the moisture concentration distribution on the cracked plane. As a result, the moisture concentration affected the crack propagation resistance. The increase of the moisture concentration caused the decrease of crack propagation resistance.
一般社団法人日本機械学会の論文
2005-09-18