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Proceedings Paper

Detection of delamination located at ceramic/metal jointed interface by scanning acoustic microscopy
Author(s): Chiaki Miyasaka; Bernhard R. Tittmann; Masahiro Ohno; Shun-Ichiro Tanaka
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Paper Abstract

This paper reports on the evaluation of three different techniques to detect delaminations at interfaces of ceramic/metal joints. The three techniques were optical microscopy, scanning electron microscopy and scanning acoustic microscopy. The ceramic/metal joints consisted of plates of silicon nitrate and steel jointed with copper at the interface. The delaminations were introduce by a micro- Vickers indentor. Of the three techniques only scanning acoustic microscopy was successful in detecting the delamination. The V(z) curve technique was used to measure values for the surface acoustic wave velocity along the interface and for the defective specimens showed evidence of residual stress. Thus this study present useful guidelines in discriminating between good and defective ceramic/metal joints with scanning acoustic microscopy emerging as the most useful tool.

Paper Details

Date Published: 8 February 1999
PDF: 12 pages
Proc. SPIE 3585, Nondestructive Evaluation of Aging Materials and Composites III, (8 February 1999); doi: 10.1117/12.339859
Show Author Affiliations
Chiaki Miyasaka, The Pennsylvania State Univ. (United States)
Bernhard R. Tittmann, The Pennsylvania State Univ. (United States)
Masahiro Ohno, The Pennsylvania State Univ. (Japan)
Shun-Ichiro Tanaka, Toshiba Corp. (Japan)

Published in SPIE Proceedings Vol. 3585:
Nondestructive Evaluation of Aging Materials and Composites III
George Y. Baaklini; Carol A. Nove; Eric S. Boltz, Editor(s)

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