円孔を有する縫合CFRP積層板の損傷進展

Translated title of the contribution: Damage Progress in the Stitched CFRP Laminates with Open-Hole

吉村 彰記, 矢代 茂樹, 武田 展雄

Research output: Contribution to journalArticle

Abstract

This study experimentally and numerically investigated the tensile damage progress in stitched CFRP laminate with an open-hole. Detailed damage observation in the tensile tests revealed that stitching had almost no effect on the onset of the ply cracks. Delamination also appeared at the all ply interfaces near the hole, and was connected by neighboring ply cracks. We then performed damage extension simulation for holed stitched-laminate using a layer-wise finite element model with cohesive elements for the damage (ply cracks and delamination) and beam elements as stitch threads. Simulation results confirmed that the delamination extended toward the area surrounded by the ply cracks in the neighboring two layers and the edge of the open-hole. Moreover, we demonstrated that stitching could suppress the delamination progress from the hole edge.
Original languageJapanese
Pages (from-to)14-20
Number of pages7
Journal日本複合材料学会誌
Volume34
Issue number1
DOIs
Publication statusPublished - Jan 15 2008

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