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Acoustic emission from composite-reinforced metalsAcoustic-emission (AE) count rates are presented for tensile loading of unidirectional boron-epoxy and for aluminum sheets reinforced with unidirectional boron-epoxy. It is shown that different prepreg materials have different characteristic AE patterns. Results from composite-reinforced metal specimens show that early failures are accompanied by a sharp increase in AE count rate at the knee of the bilinear stress-strain diagram. It is further shown that the count rates are a function of specimen fabrication and that higher total counts do not necessarily correspond to early failures.
Document ID
19750032395
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Henneke, E. G., II
Herakovich, C. T.
(Virginia Polytechnic Institute and State University Blacksburg, Va., United States)
Jones, G. L.
Renieri, M. P.
Date Acquired
August 8, 2013
Publication Date
January 1, 1975
Subject Category
Composite Materials
Accession Number
75A16467
Funding Number(s)
CONTRACT_GRANT: NAS1-10646-17
CONTRACT_GRANT: NGR-47-004-101
Distribution Limits
Public
Copyright
Other

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