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本工作从实验和计算两方面测算碳/环氧复合村料在拉伸载荷下,[0/90]s、[±45]_(s),]11=11]碳布三种层板基体裂纹发生的形式和应变水平,以期能预测不同裂纹产生的载荷门槛值。结果表明:采用声发射技术跟踪配合显微观测碳/环氧层板初始损伤(基体裂纹、脱层等)的应力水平,并采用能量判据有限无计算裂纹扩展的临界应变能释放率,计算和实验结果比较,符合较好。
This work from two aspects of experimental and computational calculation of carbon / epoxy composite material under tensile load, [0/90] s, [± 45] _ (s),] 11 = 11] Crack formation and strain levels in order to predict the load threshold generated by different cracks. The results show that the stress level of initial damage (matrix crack, delamination and so on) of the carbon / epoxy laminate is observed by using acoustic emission technique and the critical strain energy release rate calculated by energy criterion is limited without calculation. Compared with the experimental results, in line with the better.