Nondestructive Evaluation of Ceramic Matrix Composite Combustor Components
Nondestructive Evaluation of Ceramic Matrix Composite Combustor Components
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DOI：
10.1063/1.1570244
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发表时间：
2002-11
期刊：
影响因子：
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通讯作者：
Jiangang Sun;M. Verrilli;R. Stephan;T. Barnett;G. Ojard
中科院分区：
文献类型：
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作者：
Jiangang Sun;M. Verrilli;R. Stephan;T. Barnett;G. Ojard
利用X射线、超声波和热像技术对由碳化硅/碳化硅复合材料制成的燃烧室衬里在燃烧台架试验前后进行了无损检测。此外，机械测试结果是从代表制造的衬垫的见证试片和燃烧暴露后从部件加工的试片中获得的。热成像迹象被发现与在试验台测试后获得的材料性能降低相关。显微结构分析表明，碳化硅/碳化硅衬里的热像图特征为剥离和纤维丝束受损。
Combustor liners fabricated from a SiC/SiC composite were nondestructively interrogated before and after combustion rig testing by X‐ray, ultrasonic and thermographic techniques. In addition, mechanical test results were obtained from witness coupons, representing the as‐manufactured liners, and from coupons machined from the components after combustion exposure. Thermography indications were found to correlate with reduced material properties obtained after rig testing. The thermography indications in the SiC/SiC liners were delaminations and damaged fiber tows, as determined through microstructural examinations.