201 一方向CFRPの高温における非主軸圧縮切欠強度(OS6-(1) 複合材料の変形と破壊およびマルチスケール計算技術,オーガナイズドセッション)

概要

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The notch size effect in the off-axis compressive strength of a unidirectional CFRP at high temperature (100℃) has been studied. This study also aims to develop engineering methods for predicting the off-axis notched strengths. Static compression tests were carried out on center hole (CH) specimens with different hole diameters and different fiber orientations. Experimental results showed that the off-axis compressive strengths of the CH specimens become smaller with increasing hole diameter, except for the 0° and 10° specimens. The off-axis compressive notch sensitivity is compared with the off-axis tensile notch sensitivity observed in the previous study, although the size of the specimens used in those tests are different. This comparison demonstrates that the compressive notch sensitivity is lower than the tensile one. The off-axis compressive notched strengths were predicted using the off-axis notch sensitivity model. This model can efficiently predict the off-axis notch sensitivity, but they fail to predict the off-axis notched strengths distributed in the vicinity of the notch insensitive line.
一般社団法人日本機械学会の論文
2009-08-25