材料
Online ISSN : 1880-7488
Print ISSN : 0514-5163
ISSN-L : 0514-5163
CFRP積層板の落錘衝撃損傷と衝撃吸収エネルギーの関係に及ぼす積層構成の影響
永井 功田中 利光松川 真美小牧 和夫北條 正樹
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1996 年 45 巻 7 号 p. 792-798

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The relation between damage and absorbed energy in four kinds of carbon/epoxy composite laminates was studied using an instrumented falling weight impact machine. Orthotropic and quasi-isortropic laminates, which were fabricated from unidirectional or plain woven prepreg, were used to investigate the effect of lay-up sequence. The thermal deply technique was applied to determine the extent of delamination and fiber breakage at various impact energy levels. In each kind of laminate, the absorbed impact energy showed a linear relation with the total delamination area and crack area of fiber breakage. No major difference was observed between orthotropic and quasi-isotropic laminates. Thus, the effect of lay-up sequence on the relation between damage and absorbed energy was negligible.

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