Assessment of the Interfacial Properties of Ceramic‐Matrix Composites Using Strain Partition under Load
Assessment of the Interfacial Properties of Ceramic‐Matrix Composites Using Strain Partition under Load
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使用负载下应变分配评估陶瓷基复合材料的界面性能
DOI：
10.1111/j.1151-2916.1998.tb02636.x
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
S. Baste
中科院分区：
文献类型：
--
作者：
J. Morvan;S. Baste
陶瓷基复合材料的界面滑移应力是影响复合材料整体性能的关键参数。超声表征，通过完整的测定刚度张量沿着拉伸试验，检测所有的损坏机制：横向基体微裂纹和纵向裂纹的存在下，在纤维/基体界面。它还允许在负载下的应变分区。建立了一个细观力学模型，并给出了在整个拉伸试验过程中的界面滑动应力的值，无论是在复合材料的细观结构或微观结构水平上发生的损伤。
The interfacial sliding stress is a key parameter in the global behavior of ceramic-matrix composites. An ultrasonic characterization, through the complete determination of the stiffness tensor along a tensile test, detects all the damage mechanisms: transverse matrix microcracking and the existence of longitudinal cracks at the fiber/matrix interface. It also allows a strain partition under load. A micromechanical model is established and gives access to the value of the interfacial sliding stress during the entire tensile test, whether the damage occurs at the mesostructural or at the microstructural level of the composite.