ACOUSTIC EMISSION AND ELECTRICAL RESISTIVITY MONITORING OF SIC/SIC COMPOSITE CYCLIC BEHAVIOR

机译：SiC / SIC复合循环行为的声发射和电阻率监测

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Successful implementation of SiC/SiC composites in rotating components demands an excellent understanding of their cyclic stress and fatigue behavior. Two fiber-reinforced melt-infiltrated composites were tested under several cyclic stress conditions. In situ acoustic emission and electrical resistance was used to monitor damage accumulation and understand time and stress dependant degradation of mechanical properties. Post test microscopy and fractography was then used to observe microstructural anomalies which suggest possible damage progression mechanisms. Electrical resistance measurements were in good agreement with decreasing interfacial shear stress and show potential as a monitoring technique for fatigue related damage.

机译：旋转组件中的SiC / SiC复合材料的成功实施要求对其循环应力和疲劳行为的理解。在几个环状应力条件下测试两个纤维增强熔融渗透复合材料。原位声发射和电阻用于监测损伤积累，了解机械性能的时间和应力依赖性降解。然后使用后测试显微镜和断裂来观察显示可能损坏进展机制的微观结构异常。电阻测量与减少界面剪切应力的良好吻合良好，并表现为疲劳相关损害的监测技术。

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《International Conference on Advanced Ceramics and Composites》|2014年||共8页
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Christopher R. Baker; Gregory N. Morscher;
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中图分类 TQ174.75-532;
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2. Monitoring tensile fatigue crack growth and fiber failure around a notch in laminate SIC/SIC composites utilizing acoustic emission, electrical resistance, and digital image correlation [J] . Morscher Gregory N., Maxwell Ryan Journal of the European Ceramic Society . 2019,第2a3期

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4. ACOUSTIC EMISSION AND ELECTRICAL RESISTIVITY MONITORING OF SIC/SIC COMPOSITE CYCLIC BEHAVIOR [C] . Christopher R. Baker, Gregory N. Morscher International Conference on Advanced Ceramics and Composites . 2014

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ACOUSTIC EMISSION AND ELECTRICAL RESISTIVITY MONITORING OF SIC/SIC COMPOSITE CYCLIC BEHAVIOR

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