Affiliation:
1. Center for Nondestructive Evaluation Iowa State University Ames, IA 50011
Abstract
In single-sided, two-transducer ultrasonic measurements (commonly known as acousto-ultrasonics) of composites, the received signals are useful for the nondestructive evaluation of material properties. In this paper quantitative analysis is given for the oblique echoes obtained in acousto-ultrasonic measurements on a thick uni directional composite plate. Based on the slowness surfaces of the material, angular de pendent group velocities of the various modes are computed. Experimentally measured times-of-flight of oblique echoes of quasi-longitudinal, quasi-shear-vertical, shear-hori zontal, and mode-converted waves are compared with calculated results. Excellent agree ment was obtained.
Subject
Materials Chemistry,Mechanical Engineering,Mechanics of Materials,Ceramics and Composites
Reference7 articles.
1. The Acousto-Ultrasonic Approach
2. Composite Structures;Duke, J.C., Jr.,1984
3. 1984 Advances in Aerospace Sciences and Engineering, U.;Govada, A.,1984
Cited by
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