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Propagation of Flexural Mode AE Signals in GR/EP Composite PlatesIt has been documented that AE signals propagate in thin plates as extensional and flexural plate modes. This was demonstrated using simulated AE sources (pencil lead breaks) by Gorman on thin aluminum and gr/ep composite plates and by Gorman and Prosser on thin aluminum plates. A typical signal from a pencil lead break source which identifies these two modes is shown. AE signals from transverse matrix cracking sources in gr/ep composite plates were also shown to propagate as plate modes by Gorman and Ziola. Smith showed that crack growth events in thin aluminum plates under spectrum fatigue loading produced signals that propagated as plate modes. Additionally, Prosser et al. showed that AE signals propagated as plate modes in a thin walled composite tube.
Document ID
Document Type
Conference Paper
Prosser, W. H. (NASA Langley Research Center Hampton, VA, United States)
Gorman, M. R. (Naval Postgraduate School Monterey, CA, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 1992
Publication Information
Publication: Proceedings of the Fourth International Symposium on Acoustic Emission from Composite Materials
Subject Category
Composite Materials
Meeting Information
Fourth International Symposium on Acoustic Emission from Composite Materials
Distribution Limits
Public Use Permitted.

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