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Study of the mechanical behavior of a 2-D carbon-carbon compositeThe out-of-plane fracture of a 2-D carbon-carbon composite was observed and characterized to gain an understanding of the factors influencing the stress distribution in such a laminate. Finite element analyses of a two-ply carbon-carbon composite under in-plane, out-of-plane, and thermal loading were performed. Under in-plane loading all components of stress were strong functions of geometry. Additionally, large thermal stresses were predicted. Out-of-plane tensile tests revealed that failure was interlaminar, and that cracks propagated along the fiber-matrix interface. An elasticity solution was utilized to analyze an orthotropic fiber in an isotropic matrix under uniform thermal load. The analysis reveals that the stress distributions in a transversely orthotropic fiber are radically different than those predicted assuming the fiber to be transversely isotropic.
Document ID
19880009265
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Avery, W. B. (Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Herakovich, C. T. (Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Date Acquired
September 5, 2013
Publication Date
August 1, 1987
Subject Category
Composite Materials
Report/Patent Number
PB88-140819
CCMS-87-13
NASA-CR-182594
NAS 1.26:182594
VPI-E-87-15
Accession Number
88N18649
Funding Number(s)
CONTRACT_GRANT: NAG1-343
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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