NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Micromechanical predictions of crack initiation, propagation and crack growth resistance in boron/aluminum compositesAn elastoplastic, axisymmetric finite element model has been used to predict the initiation and propagation of a crack in a composite model consisting of a single broken boron fiber embedded in an annular sheath of aluminum matrix. The accuracy of the axisymmetric finite element model for crack problems has been established by solving the classical problem of a penny-shaped crack in a thick cylindrical rod under axial tension. Also, the stress intensity factors predicted by the present numerical model are compared with continuum results. A constant displacement boundary condition applied during an increment of crack growth permits a substantial amount of stable crack growth in the matrix material. The concept of Crack Growth Resistance Curves (KR-curves) has been used to determine the point of crack instability
Document ID
19830044661
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Mahishi, J. M.
(Wyoming Univ. Laramie, WY, United States)
Adams, D. F.
(Wyoming, University Laramie, WY, United States)
Date Acquired
August 11, 2013
Publication Date
November 1, 1982
Publication Information
Publication: Journal of Composite Materials
Volume: 16
Subject Category
Composite Materials
Accession Number
83A25879
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available