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Influence of residual stresses on the tensile strength of composite-metal sandwich laminatesThe tensile strength of boron-epoxy/aluminum sandwich laminates is discussed relative to the residual thermal stresses generated by curing and bonding at elevated temperatures. It is shown that the sandwich laminates investigated exhibit three dinstinct modes of failure, depending upon the fiber orientation of the composite. Sandwich laminates with moderate to high percentage of 0-deg fibers exhibit early failures initiated by edge effect; laminates with moderate to high percentage of 90-deg fibers fail according to a first-ply failure criterion; laminates with moderate to high percentages of plus or minus 45 deg plies fail at strains equal to or greater than the failure strain of the corresponding all-composite laminate.
Document ID
19780030834
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Herakovich, C. T.
(Virginia Polytechnic Institute and State University Blacksburg, Va., United States)
Wong, D. M.
(Tennessee Eastman Co. Kingsport, Tenn., United States)
Date Acquired
August 9, 2013
Publication Date
November 1, 1977
Publication Information
Publication: Experimental Mechanics
Volume: 17
Subject Category
Composite Materials
Accession Number
78A14743
Funding Number(s)
CONTRACT_GRANT: NGR-47-004-101
CONTRACT_GRANT: NGR-47-004-129
Distribution Limits
Public
Copyright
Other

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