擬似等方性CFRP積層板における微視的損傷の発生・進展挙動の実験的評価

概要

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Microscopic damage progress under static tensile loading in quasi-isotropic CFRP laminates is observed using a scanning acoustic microscope (SAM) and an optical microscope. Both plain specimens and specimens with circular holes are tested. By observing the edges of the plain specimens, the transverse crack density is measured as a function of laminate stress. By SAM observation of the specimens with holes, delamination onset and growth are detected. To discuss the delamination onset around the hole, the energy release rate associated with the delamination onset is calculated following O'Brien and Raju (AIAA-84-0961, (1984) 526-536). The energy release rate predictions are qualitatively consistent with experimental observations.
一般社団法人日本機械学会の論文
1996-10-25