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Dynamic delamination fracture toughness of a graphite/epoxy laminate under impactDynamic delamination fracture toughness in a (90/0)5s T300/934 graphite/epoxy laminate was investigated using impact loading. Delamination cracks of three different sizes were embedded at the midplane of the composite specimen. The threshold impact velocity that causes propagation of the delamination crack was used in the dynamic analysis with the finite element method. From the finite element solution, the time-history of the strain energy release rate was calculated. The critical strain energy release rate was taken to equal the maximum value of the response history.
Document ID
19880042228
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1016/0266-3538(88)90077-2
Authors
Sun, C. T. (Purdue University West Lafayette, IN, United States)
Grady, J. E. (NASA Lewis Research Center Cleveland, OH; Purdue University, West Lafayette, IN, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1988
Publication Information
Publication: Composites Science and Technology
Volume: 31
Issue: 1 19
ISSN: 0266-3538
Subject Category
Composite Materials
Accession Number
88A29455
Funding Number(s)
CONTRACT_GRANT: NAG3-211
Distribution Limits
Public
Copyright
Other

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