NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Dynamic delamination crack propagation in a graphite/epoxy laminateThe dynamic delamination crack propagation behavior during ballistic tests of (90/0)5s T-300/934 graphite/epoxy laminates with embedded interfacial cracks was investigated using high speed photography. The impact on the beam-like specimen was produced with a silicon rubber ball, and the crack propagation speeds and the threshold impact velocities required to initiate dynamic crack propagation were determined for several crack positions. The results suggest that the mode of crack propagation depends on the specimen geometry as well as the loading condition. A simplified finite element analysis of the experimental data obtained from one of the midplane-cracked specimens was used to estimate the critical strain energy release rate, which may determine the onset of unstable crack propagation.
Document ID
19860058272
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Sun, C. T.
(Purdue University West Lafayette, IN, United States)
Grady, J. E.
(Purdue Univ. West Lafayette, IN, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1986
Subject Category
Composite Materials
Accession Number
86A43010
Funding Number(s)
CONTRACT_GRANT: NAG3-211
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available