摘要
对预测复合材料裂纹扩展方向的比应变能密度准则的正确性作了进一步实验验证。采用了云纹干涉术和普通照相法这两种试验方法。试验材料为3种不同增强结构的玻璃钢,它们具有不同程度的各向异性性质。测试结果同准则的预测结果符合较好。
Correctness of the strain energy density ratio criterion , which predicts the direction of crack growth in composites , has been verified by tests . Two test methods - the moire method and the photographic method were used . Materials tested include 3 different kinds of glass fibre fabric reinforced polyesters involving difierent degrees of anisotropy. The test results are in good accord with the results as predicted by the criterion .
出处
《北京理工大学学报》
EI
CAS
CSCD
1990年第4期48-56,共9页
Transactions of Beijing Institute of Technology
关键词
裂纹扩展
比应变能
密度准则
实验
crack growth /strain energy density ratio criterion, stress ratio , strain ratio , normal stress ratio criterion , strain energy density criterion , moire method .
