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An experimental study of compression failure of fibrous laminated composites in the presence of stress gradientsMechanisms of failure in laminates in the presence of a stress raiser were experimentally studied. The damage initiation and propagation throughout the entire load history were examined via real-time holographic interferometry and photomicrography of the hole surface. Multilayered composite flat plates made of T300/BP907 and IM7/8551-7 were tested. It is shown that the failure is initiated as a localized instability in the 0-deg plies at the hole surface approximately at right angles to the loading direction. A series of events is described which culminates in the complete loss of flexural stiffness of each of the delaminated portions, leading to catastrophic failure of the plate.
Document ID
19900053668
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Waas, A. M.
(California Inst. of Tech. Pasadena, CA, United States)
Knauss, W. G.
(California Institute of Technology Pasadena, United States)
Babcock, C. D., Jr.
(California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Publication Information
Publication: International Journal of Solids and Structures
Volume: 26
Issue: 10-Sep
ISSN: 0020-7683
Subject Category
Composite Materials
Accession Number
90A40723
Funding Number(s)
CONTRACT_GRANT: NSG-1483
Distribution Limits
Public
Copyright
Other

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