層間樹脂層を有するCFRP積層板のトランスバースクラック発生

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. Tensile tests are conducted on CFRP cross-ply laminates with interlaminar resion layer at 0/90 interfaces. Transverse crack density is measured as a function of the laminate strain. To investigate temperature effect. tests are conducted at room temperature and 80℃. 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. The validity of the energy criterion and strength criterion is discussed.
社団法人日本機械学会の論文
1998-02-25