SYMPOSIA PAPER Published: 01 January 1994

Real-Time Acousto-Ultrasonic NDE Technique to Monitor Damage in SiC/CAS Ceramic Composites Subjected to Dynamic Loads


A real-time acousto-ultrasonic (AU) nondestructive evaluation (NDE) technique was developed to study the damage mechanisms of unidirectional and cross-ply SiC/CAS ceramic composites. Real-time AU was found to be very sensitive in detecting the stress levels at which the onset of matrix cracking occurs and the stress level for saturation of matrix cracking. Real-time AU as developed and presented in this paper can continuously monitor damage under cyclic loads and hence enhance our understanding of damage mechanisms in ceramic composites.

Author Information

Tiwari, A
Virginia Polytechnic Institute and State University, Blacksburg, VA
Henneke, EG
Virginia Polytechnic Institute and State University, Blacksburg, VA
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Developed by Committee: E08
Pages: 363–375
DOI: 10.1520/STP18135S
ISBN-EB: 978-0-8031-5263-2
ISBN-13: 978-0-8031-1989-5