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首页> 外文会议>High temperature ceramic matrix compositei III >Methodology for Assessing the Interfacial Sliding Stress of a 2D Woven SiC-SiC Composite
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Methodology for Assessing the Interfacial Sliding Stress of a 2D Woven SiC-SiC Composite

机译：二维编织SiC-SiC复合材料界面滑动应力评估方法

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摘要

A micromechanical model is established to assess the value of the interfacial sliding stress as a function of the elastic and inelastic strains, the transverse crack density and the area upon which the sliding takes. The interfacial sliding stress is then measured during all the tensile test whether the damage occurs at the meso or at the microstructure level of a 2D SiC-SiC composite. The ultrasonic characterization through the complete determination of the stiffness tensor along a tensile test detects all the damage mechanisms and allows a strain partition under load which separates the various mechanisms responsible for the non-linear behavior of ceramic matrix composites (CMCs). It results that, according to the scale of the composite, the interfacial sliding stress exhibits a different value due to the nature of the bonding.
机译：建立了一个微力学模型来评估界面滑动应力的值，该值是弹性和非弹性应变，横向裂纹密度和滑动区域的函数。然后在所有拉伸试验期间测量界面滑动应力，以确定损伤是在二维SiC-SiC复合材料的细观水平还是在微观结构水平发生。通过沿拉伸试验完全确定刚度张量的超声表征，可以检测所有损坏机制，并允许在载荷下进行应变分配，从而将负责陶瓷基复合材料（CMC）非线性行为的各种机制分开。结果表明，根据复合材料的尺寸，由于粘结的性质，界面滑动应力表现出不同的值。

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