Identification of interlaminar fracture properties of a composite laminate using local full-field kinematic measurements and finite element simulations
Identification of interlaminar fracture properties of a composite laminate using local full-field kinematic measurements and finite element simulations
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DOI：
10.1016/j.compositesa.2013.02.015
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发表时间：
2013-06
影响因子：
8.7
通讯作者：
F. Mathieu;P. Aimedieu;J. Guimard;F. Hild
中科院分区：
文献类型：
--
作者：
F. Mathieu;P. Aimedieu;J. Guimard;F. Hild
本文致力于通过分析单向热固性复合材料上不同模式混合的三个测试来识别层间性能。结果表明，通过将数字图像相关性与有限元模拟相结合，可以局部提取标准不确定度最多等于 50J/m2 的能量释放率。该性能是通过标准有限元代码通过优化裂纹尖端的位置来实现的，裂纹尖端的位置是评估这些材料的（线弹性）断裂力学参数所需的关键信息。可以在所有配置中以可接受的不确定性来识别应力强度因子和实验模式混合的水平。
The paper is devoted to the identification of interlaminar properties by analyzing three tests with different mode mixities on a unidirectional thermoset composite material. It is shown that by coupling digital image correlation with finite element simulations, it is possible to locally extract energy release rates whose standard uncertainty is at most equal to 50J/m2. This performance is achieved with a standard finite element code by optimizing the location of the crack tip, which is the key information needed to evaluate (linear elastic) fracture mechanics parameters of these materials. The level of stress intensity factors and the experimental mode mixity can be identified in all configurations with an acceptable uncertainty.