日本機械学会論文集A編
Online ISSN : 1884-8338
一般論文
疲労負荷下におけるクロスプライCFRP積層板のトランスバースクラック発生評価
髙村 啓吾細井 厚志佐藤 成道川田 宏之
著者情報
ジャーナル フリー

2011 年 77 巻 779 号 p. 1123-1134

詳細
抄録

In this study, transverse crack initiation in cross-ply CFRP laminates under fatigue loading was evaluated focusing on the transverse crack growth and saturation. The number of cycles that a transverse crack initiates was predicted by the analytical model on the basis of the modified Paris law. In addition, the lower threshold of the transverse crack formation was researched by a modified Paris-law, and the fatigue limit of the transverse crack initiation was evaluated by calculating the stress applied in 90° layer where the increase of the transverse cracks was saturated. Moreover, transverse crack was observed by using scanning electron microscope (SEM) in order to investigate the mechanism of transverse crack initiation. As the results, the analytical results for predicting the transverse crack initiation showed good agreement with the experimental results. Moreover, it was shown that the lower threshold of the transverse crack formation existed, and that the stress applied in 90° layer at saturation state was almost equivalent to the fatigue limit of the transverse crack initiation from the experimental results. From the observation with SEM, it was found that the initiation of the transverse crack under fatigue loading depended on the interface property between fiber and matrix.

著者関連情報
© 2011 一般社団法人 日本機械学会
前の記事 次の記事
feedback
Top