Title:
Nonlinear Ultrasonic Techniques for the Quantification of Thermal Damage in Carbon/Carbon Composite Material

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Gmeiner, Fabian
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Jacobs, Laurence J.
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Abstract
This research applies nonlinear ultrasonic (NLU) techniques for the quantitative characterization of Carbon/Carbon (C/C) composite friction materials. The characterization focuses on identifying thermal and oxidative damage induced by heat cycles during the lifespan of the material. Carbon/Carbon friction materials are subject to high service temperatures in air and thus susceptible to rapid oxidation damage [1], leading to a reduction in their mechanical properties and possibly shortening their lifespan. The nondestructive evaluation (NDE) of C/C composites could be used to quantify the damage state and help predict possible premature component failure.
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2022-08-29
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