Fatigue crack growth in unidirectional metal matrix compositeThe weight function method was used to determine the effective stress intensity factor and the crack opening profile for a fatigue tested composite which exhibited fiber bridging. The bridging mechanism was modeled using two approaches; the crack closure approach and the shear lag approach. The numerically determined stress intensity factor values from both methods were compared and correlated with the experimentally obtained crack growth rates for SiC/Ti-15-3 (0) (sub 8) oriented composites. The near crack tip opening profile was also determined for both methods and compared with the experimentally obtained measurements.
Document ID
19920037110
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ghosn, L. J. (NASA Lewis Research Center; Sverdrup Technology, Inc. Cleveland, OH, United States)
Telesman, J. (NASA Lewis Research Center Cleveland, OH, United States)
Kantzos, P. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1990
Subject Category
Composite Materials
Meeting Information
Meeting: Fatigue 90: International Conference on Fatigue and Fatigue Thresholds