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On the enhancement of impact damage tolerance of composite laminatesThis paper examines the use of a thin layer of Ultra High Molecular Weight Polyethylene (UHMWPE) on the outer surface of carbon/epoxy composite materials as a method of improving impact resistance and damage tolerance through hybridization. Flat 16-ply laminates as well as honeycomb sandwich structures with eight-ply facesheets were tested in this study. Instrumented drop-weight impact testing was used to inflict damage upon the specimens. Evaluation of damage resistance included instrumented impact data, visual examination, C-scanning and compression after impact (CAI) testing. The results show that only one lamina of UHMWPE did not improve the damage tolerance (strength retention) of the 16-ply flat laminate specimens or the honeycomb sandwich beams, however, a modest gain in impact resistance (detectable damage) was found for the honeycomb sandwich specimens that contained an outer layer of UHMWPE.
Document ID
19930045470
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Nettles, A. T.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Lance, D. G.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Publication Information
Publication: Composites Engineering
Volume: 3
Issue: 5
ISSN: 0961-9526
Subject Category
Composite Materials
Accession Number
93A29467
Distribution Limits
Public
Copyright
Other

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