繊維強度低下を防いで疲労強度を向上させる平織GRPの疲労挙動について(<小特集>X線材料強度小特集)

概要

論文の詳細を見る
In the present report a particular attention is given to the fatigue damage of cloth GRP is caused by the lowering of fiber strength. From such a viewpoint, measurements were made on the residual strength of the GRP specimens and the strength of the consituting fiber strands in oeder to clarify the change in fiber strength during fatigue. It was found that the crack length obtained from Griffith strength agreed well with the predicted value calculated from the damage. Fatigue tests were made on the altered specimens whose weft strands were covered with polymer sheets. The warp strands were found to be protected from suffering damage by wefts at woven intersections. The fatigue strength increased by 2.26 times of the originalvalue (at the 10^7-th cycles.), and thus it was possible to prepare the cloth GRP of high fatigue strength.
社団法人日本材料学会の論文
1987-08-15