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Role of matrix microstructure in the ultrasonic characterization of fiber-reinforced metal matrix composites

Published online by Cambridge University Press:  31 January 2011

S. Krishnamurthy ,
T. E. Matikas  and
P. Karpur
S. Krishnamurthy
Affiliation:
USAF Materials Directorate, Wright Laboratory, WL/MLLM/UES, Wright-Patterson AFB, Ohio 45433–7817
T. E. Matikas
Affiliation:
USAF Materials Directorate, Wright Laboratory, WL/MLLP/UDRI, Wright-Patterson AFB, Ohio 45433–7817
P. Karpur
Affiliation:
USAF Materials Directorate, Wright Laboratory, WL/MLLP/UDRI, Wright-Patterson AFB, Ohio 45433–7817
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Abstract

This work deals with the application of ultrasonic nondestructive evaluation for characterizing fiber-reinforced metal matrix composites. The method involved the use of a recently developed technique in which the fiber reinforcement acts as a reflector to incident ultrasonic shear waves. Single fiber and multifiber, single ply composites consisting of SiC fibers in several titanium alloy matrices were investigated. The ultrasonic images obtained were correlated with the results of metallographic characterization of the composites. The results showed that the ultrasonic response of the metal matrix composites is significantly influenced by the microstructure of the matrix through which the incident wave traverses. The general effects of matrix on ultrasonic wave propagation are reviewed, and the ultrasonic signals obtained from various SiC fiber-reinforced titanium alloy composites are discussed in terms of the scattering effects of matrix microstructure.

Type
Articles
Information
Journal of Materials Research , Volume 12 , Issue 3 , March 1997 , pp. 754 - 763
Copyright
Copyright © Materials Research Society 1997

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