A Mode I cohesive law characterization procedure for through-the-thickness crack propagation in composite laminates
A Mode I cohesive law characterization procedure for through-the-thickness crack propagation in composite laminates
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DOI：
10.1016/j.compositesb.2016.03.071
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发表时间：
2016-06-01
影响因子：
13.1
通讯作者：
Tan, Tein-Min
中科院分区：
文献类型：
--
作者：
Bergan, Andrew;Davila, Carlos;Tan, Tein-Min
提出了一种用于表征多向碳纤维增强复合材料层合板沿厚度方向损伤扩展的实验方法。紧凑的拉伸试样配置是用来传播损伤稳定，而负载和全场位移记录。这些测量值被用来计算断裂韧性和裂纹张开位移的三线性凝聚力的法律的特点。所提出的方法提供了一种外推到稳态的手段，这样的内聚法的特点是完全和准确的，即使当用于表征的试样太小，达到稳态裂纹扩展。通过预测几何比例试样的结构响应和断裂，证明了其特征的内聚法。爱思唯尔有限公司出版
A method is proposed for the experimental characterization of through-the-thickness damage propagation in multidirectional carbon fiber reinforced polymer laminates. The compact tension specimen configuration is used to propagate damage stably while load and full-field displacements are recorded. These measurements are used to compute the fracture toughness and crack opening displacement from which a trilinear cohesive law is characterized. The proposed method provides a means to extrapolate to steady-state such that the cohesive law is characterized completely and accurately, even when the test specimens used for the characterization are too small to reach steady-state crack propagation. The characterized cohesive law is demonstrated through a prediction of the structural response and fracture of a geometrically-scaled test specimen. Published by Elsevier Ltd.