層間高靱性化複合材料積層板のトランスバースクラック発生に伴うヤング率低下(<小特集>材料・構造の衝撃問題)

概要

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In recent years, interlaminar-toughened laminates are developed in which resin rich layers are placed in interlaminar regions in order to enhance the interlaminar fracture toughness of CFRP laminates. In this paper, Young's modulus reduction due to transverse cracking in interlaminar-toughened CFRP cross-ply laminates are measured as a function of transverse crack density. Loading unloading tests are conducted at room temperature and 80℃ to investigate temperature effect. Laminate configurations are cross-ply (0/A/90_m/A/0) where A denotes interlaminar resin layer and m=4.8 and 12. The experimental results are compared with the theoretical prediction based on the two-dimensional analysis considering the interlaminar resin layers and thermal residual stresses.
社団法人日本機械学会の論文
1997-12-25