Formation and growth of 90° ply fatigue cracks in carbon/epoxy laminates
Formation and growth of 90° ply fatigue cracks in carbon/epoxy laminates
复制标题
碳/环氧树脂层压板中 90° 层疲劳裂纹的形成和增长
DOI：
10.1016/0266-3538(91)90087-6
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发表时间：
1991
影响因子：
9.1
通讯作者：
C. Henaff
中科院分区：
文献类型：
--
作者：
M. Lafarie;C. Henaff
本文主要研究碳/环氧正交层板基体开裂的疲劳机理。在两个等效铺层上进行了拉伸-拉伸疲劳试验，其唯一区别在于堆叠顺序和由此产生的90°铺层厚度。测量了横向铺层裂纹的起始、累积和扩展。90°铺层厚度对横向铺层中的裂纹分布和疲劳裂纹扩展速率有相当大的影响。对90°铺层基体裂纹形成和扩展的应变能释放率进行了断裂力学分析，并与实验结果进行了比较。
This study focuses on fatigue mechanisms of matrix cracking in carbon/epoxy cross-ply laminates. Tension-tension fatigue tests were conducted on two equivalent lay-ups, whose only difference consists in the stacking sequence and in the resulting 90° ply thickness. Transverse ply crack onset, accumulation and growth were measured. The 90° ply thickness was shown to have a considerable influence on the crack distribution in the transverse ply and on the fatigue crack growth rates. A fracture mechanics analysis for the strain energy release rate associated with 90° ply matrix crack formation and growth has been developed and compared with experimental results.