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AE Source Orientation by Plate Wave AnalysisLead breaks (Hsu-Neilsen source) were used to generate simulated acoustic emission signals in an aluminum plate at angles of 0, 30, 60, and 90 degrees with respect to the plane of the plate. This was accomplished by breaking the lead on slots cut into the plate at the respective angles. The out-of-plane and in-plane displacement components of the resulting signals were detected by broad band transducers and digitized. Analysis of the waveforms showed them to consist of the extensional and flexural plate modes. The amplitude of both components of the two modes was dependent on the source orientation angle. This suggests that plate wave analysis may be used to determine the source orientation of acoustic emission sources.
Document ID
Acquisition Source
Langley Research Center
Document Type
Reprint (Version printed in journal)
Gorman, Michael R.
(Naval Postgraduate School Monterey, CA, United States)
Prosser, William H.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 1991
Publication Information
Publication: Journal of Acoustic Emission
Volume: 9
Issue: 4
Subject Category
Distribution Limits
Work of the US Gov. Public Use Permitted.
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