二重端面切欠き引張試験による複合材料積層板のモードII層間破壊じん性評価法の提案と検証

矢代 茂樹, 安形 俊秀, 吉村 彰記

研究成果: ジャーナルへの寄稿学術誌査読

抄録

<p>This study proposed and validated a new method to evaluate the mode II interlaminar fracture toughness both at the initial delamination onset and during the crack growth stage by using a doubly end-notched tension (DENT) specimen. The specimen configuration idealized the growth of two mode II cracks in a double-lap joint. Shear-lag analysis indicated that the energy release rate of the DENT specimen is independent of the crack length and that the crack growth is stable. The initial mode II fracture toughness obtained by quasi-static tensile tests of the proposed specimens largely agreed with that obtained by the end notched flexure (ENF) tests. This trend was also valid in the other CFRP unidirectional laminates with different Young's moduli. Furthermore, the present study demonstrated that the crack growth resistance curve (R-curve) of mode II delamination could be obtained by unloading-reloading tests of the proposed specimens.</p>
寄稿の翻訳タイトルNew Test Method for Mode II Interlaminar Fracture Toughness of Composite Laminates: Doubly End-Notched Tension Method
本文言語日本語
ページ(範囲)19-24
ページ数6
ジャーナル日本複合材料学会誌
44
1
DOI
出版ステータス出版済み - 2018

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「二重端面切欠き引張試験による複合材料積層板のモードII層間破壊じん性評価法の提案と検証」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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