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Progressive failure methodologies for predicting residual strength and life of laminated compositesTwo progressive failure methodologies currently under development by the Mechanics of Materials Branch at NASA Langley Research Center are discussed. The damage tolerance/fail safety methodology developed by O'Brien is an engineering approach to ensuring adequate durability and damage tolerance by treating only delamination onset and the subsequent delamination accumulation through the laminate thickness. The continuum damage model developed by Allen and Harris employs continuum damage laws to predict laminate strength and life. The philosophy, mechanics framework, and current implementation status of each methodology are presented.
Document ID
19930021677
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Harris, Charles E. (NASA Langley Research Center Hampton, VA, United States)
Allen, David H. (Texas A&M Univ. College Station., United States)
Obrien, T. Kevin (Army Aerostructures Directorate Hampton, VA., United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1991
Publication Information
Publication: First NASA Advanced Composites Technology Conference, Part 2
Subject Category
Composite Materials
Accession Number
93N30866
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19930021652Collected WorksFirst NASA Advanced Composites Technology Conference, Part 2
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