A metal matrix composite damage and life prediction model
- Research Applications, Inc., San Diego, CA (United States)
- Army Troop and Aviation Command, Fort Eustis, VA (United States). Aviation Applied Technology Directorate
A simple analytical model is derived for the prediction of time-dependent deformation and damage response of metal matrix composites under fiber direction loading. The model can be used in conjunction with a number of viscoplastic constitutive models to describe the matrix material behavior. Damage in the form of progressive fiber fractures is incorporated using a mechanistic approach. The criterion for fiber fractures can be based on statistical information on fiber strength. When used in conjunction with a prescribed failure condition for a composite, the model provides a means for predicting composite life under general thermomechanical load conditions. Based on comparison of results with detailed finite element analyses and with laboratory test data, it appears that the simple model provides reasonably accurate predictions.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 316153
- Journal Information:
- Journal of Engineering for Gas Turbines and Power, Vol. 120, Issue 4; Other Information: DN: Paper presented at the international gas turbine and aeroengine congress and exhibition, June 2--5, 1997, Orlando, FL (US); PBD: Oct 1998
- Country of Publication:
- United States
- Language:
- English
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