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Proceedings Paper

Lap-joint inspection using plate waves
Author(s): Ajit K. Mal; Zensheu Chang; Dawei Guo; Michael Gorman
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Paper Abstract

The problems of guided waves propagating across a lap joint as well as reflected by the free edge of a semi-infinite plate with defects are investigated both theoretically and experimentally. The theoretical analysis is accomplished by using a hybrid method called the global local finite element method. A bounded region enclosing the lap joint, or the free edge, is described and analyzed by the finite element method, and the Lamb wave modal expansion is used to represent the wave field outside this region. The experiments are performed by using the fracture wave detector. The theoretical and experimental results are compared and show good agreement.

Paper Details

Date Published: 14 November 1996
PDF: 10 pages
Proc. SPIE 2945, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware, (14 November 1996); doi: 10.1117/12.259085
Show Author Affiliations
Ajit K. Mal, Univ. of California/Los Angeles (United States)
Zensheu Chang, Univ. of California/Los Angeles (United States)
Dawei Guo, Univ. of California/Los Angeles (United States)
Michael Gorman, Digital Wave Corp. (United States)


Published in SPIE Proceedings Vol. 2945:
Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware
Raymond D. Rempt; Alfred L. Broz, Editor(s)

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