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RESEARCH PAPERS

Nondestructive Evaluation of Adhesively Bonded Joints in Graphite/Epoxy Composites Using Acousto-Ultrasonics

[+] Author and Article Information
S. Tanary, Y. M. Haddad

Department of Mechanical Engineering, University of Ottawa, Ottawa, Ontario, Canada

A. Fahr, S. Lee

Structures and Materials Laboratory, National Aeronautical Establishment, National Research Council, Ottawa, Ontario, Canada

J. Pressure Vessel Technol 114(3), 344-352 (Aug 01, 1992) (9 pages) doi:10.1115/1.2929050 History: Received September 06, 1989; Revised December 19, 1991; Online June 17, 2008

Abstract

This paper is concerned with the use of the acousto-ultrasonic technique to evaluate nondestructively the mechanical performance of composite bonded joints. In this context, acousto-ultrasonic measurements followed by destructive shear tests were performed on single lap joint specimens made from graphite/epoxy adherends joined with FM 300 film adhesive. The results indicate a good correlation between acousto-ultransonic wave propagation characteristics and the shear strength of the bonded joints under different testing conditions. These correlations suggest that an estimation of the joint strength can be made by using acousto-ultrasonics provided that the measurement system is calibrated for variations of the material and geometry of the specimen.

Copyright © 1992 by The American Society of Mechanical Engineers
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