A new approach for evaluating crack growth resistance curve of mode II delamination by doubly end-notched tension tests

Shigeki Yashiro, Toshihide Agata, Akinori Yoshimura

研究成果: Contribution to journalArticle査読

6 被引用数 (Scopus)

抄録

Quantitative determination of interlaminar fracture toughness that governs onset and growth of delamination is essential for engineering of composite materials and structures. This study proposes a new approach to evaluate both the initial fracture toughness and the crack growth resistance property of pure mode II delamination by tensile tests of specimens having two initial cracks, which were conceived from double-lap joints. The proposed test method achieves stable growth of mode II delamination using a fundamental testing system. This study presents the specimen configuration, the theory to evaluate the energy release rate, and experiment results. The mode II initial fracture toughness measured by the present approach agreed well with the results of conventional end-notched flexure tests. Furthermore, the crack growth resistance curves were evaluated by unloading-reloading tests of the proposed doubly end-notched tension specimens.

本文言語英語
ページ(範囲)119-133
ページ数15
ジャーナルAdvanced Composite Materials
27
2
DOI
出版ステータス出版済み - 3 4 2018

All Science Journal Classification (ASJC) codes

  • セラミックおよび複合材料
  • 材料力学
  • 機械工学

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