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14 November 1996 Lap-joint inspection using plate waves
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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.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ajit K. Mal, Zensheu Chang, Dawei Guo, and Michael Gorman "Lap-joint inspection using plate waves", Proc. SPIE 2945, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware, (14 November 1996);

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