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The effect of resin on the impact damage tolerance of graphite-epoxy laminatesThe effect of the matrix resin on the impact damage tolerance of graphite-epoxy composite laminates was investigated. The materials were evaluated on the basis of the damage incurred due to local impact and on their ability to retain compression strength in the presence of impact damage. Twenty-four different resin systems were evaluated. Five of the systems demonstrated substantial improvements compared to the baseline system including retention of compression strength in the presence of impact damage. Examination of the neat resin mechanical properties indicates the resin tensile properties influence significantly the laminate damage tolerance and that improvements in laminate damage tolerance are not necessarily made at the expense of room temperature mechanical properties. Preliminary results indicate a resin volume fraction on the order of 40 percent or greater may be required to permit the plastic flow between fibers necessary for improved damage tolerance.
Document ID
19820004267
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Williams, J. G.
(NASA Langley Research Center Hampton, VA, United States)
Rhodes, M. D.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 4, 2013
Publication Date
October 1, 1981
Subject Category
Composite Materials
Report/Patent Number
NASA-TM-83213
Meeting Information
Meeting: ASTM Conf. on Composite Mater.: Testing and Design
Location: Phoenix, AZ
Country: United States
Start Date: May 1, 1981
Accession Number
82N12140
Funding Number(s)
PROJECT: RTOP 505-33-33-06
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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