SYMPOSIA PAPER Published: 01 January 1994

Influence of Fiber-Matrix Interface on Dynamic Response of CFRP


The static and dynamic response of fiber-reinforced composite coupons with various levels of fiber surface treatments was investigated using the classical approach of strain measurement (stiffness degradation using an extensometer), as well as a dynamic phase and dynamic gain (dynamic compliance) response measurement method proposed by Elahi et al. [1]. From the experimental results, the property data are shown to correlate with the classical method of damage monitoring and demonstrate the advantages of the phase and gain response analysis. The proposed approach makes it possible to monitor continuously the fatigue damage evolution in any material system in real time without the use of an extensometer or strain gages, making it an ideal candidate for studying damage under high temperature or extremely corrosive environments where the usage of extensometers is either not practical or not possible.

Author Information

Elahi, M
Virginia Polytechnic Institute and State University, Blacksburg, VA
Reifsnider, KL
Virginia Polytechnic Institute and State University, Blacksburg, VA
Swain, RE
Smith & Nephew Richards, Inc., Memphis, TN
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Developed by Committee: E08
Pages: 255–264
DOI: 10.1520/STP18129S
ISBN-EB: 978-0-8031-5263-2
ISBN-13: 978-0-8031-1989-5