DYNAMIC CHARACTERIZATION OF CARBON-CARBON COMPOSITES
U. K. Vaidya*, and P. K. Raju** *Materials Research Laboratory, Tuskegee University, Tuskegee, AL 36088 **Department of Mechanical Engineering, Auburn University, Auburn, AL 36849
In practice, the integrity of the final form of a carbon-carbon (C/C) composite is ascertained by measurement of its density. Little attention is given to microstructural variations and overt flaw populations in the composite. Such factors lead to a wide ranging scatter in the mechanical properties of carbon-carbon composites. An understanding of the development of process related inhomogeneities in this composites is necessary to predict its performance, nondestructively. In this work a comprehensive study that includes evaluation of the composite using techniques like acoustic emission (AE), acousto-ultrasonic (AU) and vibration based nondestructive evaluation was undertaken. Salient results applying these techniques for characterization of C/C composites are presented in this paper.
Publication Source: Trends in NDE Science & Technology; Proceedings of the 14th World Conference on Non-Destructive Testing, New Delhi, 8-13 December 1996.full paper not received Publisher:Ashgate Publishing Company
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