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Compression and compression fatigue testing of composite laminatesThe effects of moisture and temperature on the fatigue and fracture response of composite laminates under compression loads were investigated. The structural laminates studied were an intermediate stiffness graphite-epoxy composite (a typical angle ply laimna liminate had a typical fan blade laminate). Full and half penetration slits and impact delaminations were the defects examined. Results are presented which show the effects of moisture on the fracture and fatigue strength at room temperature, 394 K (250 F), and 422 K (300 F). Static tests results show the effects of defect size and type on the compression-fracture strength under moisture and thermal environments. The cyclic tests results compare the fatigue lives and residual compression strength under compression only and under tension-compression fatigue loading.
Document ID
19830018657
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Porter, T. R. (Boeing Military Airplane Development Seattle, WA, United States)
Date Acquired
September 4, 2013
Publication Date
January 1, 1982
Subject Category
Composite Materials
Report/Patent Number
D180-27619-1
NAS 1.26:168023
NASA-CR-168023
Accession Number
83N26928
Funding Number(s)
CONTRACT_GRANT: NAS3-22812
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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