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Pulse propagation in a laminated composite plate and nondestructive evaluationThe surface response of a laminated composite plate with delamination cracks has been studied in this paper. The objective of this study is to analyze the surface response both in the time and frequency domains due to delamination cracks at different depths in a cross-ply composite plate. For reasons of simplicity, attention has been focused here on two-dimensional (plane-strain) motions. The source of excitation is taken to be a line vertical force acting perpendicular to the fibers in a lamina. Numerical results are presented, showing peak responses at certain resonance frequencies. A comparison of these results with those for a uniaxial graphite epoxy plate shows characteristic differences.
Document ID
19920069989
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Ju, T. H.
(NASA Headquarters Washington, DC United States)
Datta, S. K.
(Colorado, University Boulder, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Publication Information
Publication: Composites Engineering
Volume: 2
Issue: 1 Ja
ISSN: 0961-9526
Subject Category
Composite Materials
Accession Number
92A52613
Funding Number(s)
CONTRACT_GRANT: NAGW-1388
CONTRACT_GRANT: N00014-91-J-1297
Distribution Limits
Public
Copyright
Other

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