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Scattering of ultrasonic wave by cracks in a plateA hybrid numerical method combining finite elements and the boundary integral representation is used to investigate the transient scattering of ultrasonic waves by a crack in a plate. The incident wave models the guided waves generated by a steel ball impact on the plate. Two surface-breaking cracks and one subsurface crack are studied here. The results show that the location and depth of cracks have measurable effects on the surface responses in time and frequency domains. Also, the scattered fields have distinct differences in the three cases.
Document ID
19930062756
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Liu, S. W.
(NASA Headquarters Washington, DC United States)
Datta, S. K.
(Colorado Univ.; Cooperative Inst. for Research in Environmental Sciences, Boulder, United States)
Date Acquired
August 16, 2013
Publication Date
June 1, 1993
Publication Information
Publication: ASME, Transactions, Journal of Applied Mechanics
Volume: 60
Issue: 2
ISSN: 0021-8936
Subject Category
Quality Assurance And Reliability
Report/Patent Number
ASME PAPER 93-APM-7
Accession Number
93A46753
Funding Number(s)
CONTRACT_GRANT: NAGW-1388
CONTRACT_GRANT: N00014-86-K-0280
CONTRACT_GRANT: NSF MSM-86-09813
Distribution Limits
Public
Copyright
Other

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