ISSN: 0884-6804
Page Count: 7

Damage Characterization of a Cross-Ply SiC/CAS-II Ceramic Composite Under Fatigue Loading Using a Real-Time Acousto-Ultrasonic NDE Technique
Tiwari, A
Research associate, professor and head of department, and Alexander Giacco professor, Virginia Polytechnic Institute and State University, VA

Henneke, EG
Research associate, professor and head of department, and Alexander Giacco professor, Virginia Polytechnic Institute and State University, VA

Reifsnider, KL
Research associate, professor and head of department, and Alexander Giacco professor, Virginia Polytechnic Institute and State University, VA

Abstract

The application of a real-time acousto-ultrasonic (AU) nondestructive evaluation (NDE) technique to monitor damage during fatigue without stopping the test is presented in this paper. Real-time AU parameters were used to decipher the true nature of damage mechanisms occurring during cyclic loading of a SiC/CAS-II cross-ply ceramic composite. The results of AU were complemented by other NDE techniques. The S-N curve for a SiC/CAS-II cross-ply ceramic composite at room temperature was generated and a study of the failure process during cyclic loading was performed.

Keywords:
real-time, acousto-ultrasonic, nondestructive evaluation, ceramic composites, fatigue, cross-ply, SiC/CAS, S-N curve, damage

Paper ID: CTR10486J
DOI: 10.1520/CTR10486J
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