Nondestructive Evaluation of Ceramic Matrix Composite Combustor Components.

Sun, J. G. ; Verrilli, M. J. ; Stephan, R. ; Barnett, T. R. ; Ojard, G.

Technical Information Center Oak Ridge Tennessee

关键词: Ceramics;    Combustors;    Thermography;    Composite materials;    Liners;   

RP-ID  :  DE2003805256

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Combustor liners fabricated from a SiC/SiC composite were nondestructively interrogated before and after combustion rig testing. The combustor liners were inspected 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. Microstructural examination of the SiC/SiC liners revealed the thermography indications to be delaminations and damaged fiber tows.