コンプライアンス法に基づく GLARE3 Fiber/Metal 積層材料の疲労き裂進展特性

概要

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The objectives of this study were to investigate the effectiveness of a compliance method for analyzing the fatigue crack growth of GLARE 3 fiber/metal laminates, and to ascertain the influence of specimen thickness, notch length, and fiber orientation upon fatigue crack growth. The materials tested were GLARE 3-5/4 and GLARE 3-3/2. Centrally notched specimens with two kinds of notch length and two kinds of fiber orientation were fatigue tested under constant amplitude loading. The experimental stress intensity factors, K_<exp>, for the 2024-T3 aluminum-alloy layers of a GLARE 3 were obtained from the relationship between crack length and specimen compliance. The test results clarified that da/dN-ΔK_<exp> relationships are roughly independent of maximum stress level, specimen thickness, notch length, and fiber orientations and that the compliance method is effective for analyzing fatigue crack growth in GLARE 3 laminates.
一般社団法人日本機械学会の論文
2001-12-25