SYMPOSIA PAPER Published: 01 January 1997
STP11821S

Characterization of Damage Progression in Ceramic Matrix Composites Using an Integrated NDE/Mechanical Testing System

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This paper discusses the use of an unique integrated Nondestructive Evaluation (NDE)/Mechanical test system to characterize the damage progression in a ceramic matrix composite (CMC) under tensile and fatigue loading conditions. During the tests, the effects of damage were characterized in situ using conventional extensometry, and ultrasonic surface and longitudinal wave transducers. The surface wave technique clearly identified the proportional limit of the composite, while the longitudinal wave technique captured the overall deformation behavior during the tension tests. Both ultrasonic NDE techniques showed equal or greater sensitivity to damage progression in the CMC compared to conventional extensometer-based modulus data.

Author Information

John, R
University of Dayton Research Institute, Dayton, OH
Buchanan, DJ
University of Dayton Research Institute, Dayton, OH
Stubbs, DA
University of Dayton Research Institute, Dayton, OH
Herzog, JA
University of Dayton Research Institute, Dayton, OH
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Details
Developed by Committee: C28
Pages: 193–208
DOI: 10.1520/STP11821S
ISBN-EB: 978-0-8031-5365-3
ISBN-13: 978-0-8031-2033-4