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Scattering of Lamb waves in a composite plateA combined analytical and finite element technique is developed to gain a better understanding of the scattering of elastic waves by defects. This hybrid method is capable of predicting scattered displacements from arbitrary shaped defects as well as inclusions of different material. The continuity of traction and displacements at the boundaries of the two areas provided the necessary equations to find the nodal displacements and expansion coefficients. Results clearly illustrate the influence of increasing crack depth on the scattered signal.
Document ID
19920046076
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bratton, Robert
(NASA Headquarters Washington, DC United States)
Datta, Subhendu
(Colorado, University Boulder, United States)
Shah, Arvind
(Manitoba, University Winnipeg, Canada)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Subject Category
Acoustics
Meeting Information
Meeting: Annual Review of Progress in Quantitative Nondestructive Evaluation
Location: La Jolla, CA
Country: United States
Start Date: July 15, 1990
End Date: July 20, 1990
Accession Number
92A28700
Funding Number(s)
CONTRACT_GRANT: NSERC-OGP-0007988
CONTRACT_GRANT: N00014-86-K-0280
CONTRACT_GRANT: NAGW-1388
Distribution Limits
Public
Copyright
Other

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