The effect of fiber failure on the response and strength of metal matrix composites
- Air Force Institute of Technology, Wright-Patterson Air Force Base, OH (United States)
As with most composites, the static strength of titanium-based metal matrix composites is dominated by fiber fracture. The matrix material plastically deforms which results in load transfer to the fiber. The fiber crack density increases until the fibers can no longer sustain the applied load at which the composite fails. This type of composite failure was first modeled by Rosen with a chain-of-bundles approach and by assuming a Weibull failure distribution for the fibers. This approach has been highly successful in characterizing the strength of many continuous fiber-reinforced composites. In the present study, a simplified chain-of-bundles approach is embedded in an inelastic micromechanics model; hence, the prediction of both the ultimate strength of the composite as well as the inelastic stress-strain behavior in the presence of fiber failures is achieved. Comparisons with published experimental results of two titanium-based MMC`s of various layups are presented.
- OSTI ID:
- 175289
- Report Number(s):
- CONF-950686-; TRN: 95:006111-0246
- Resource Relation:
- Conference: Joint applied mechanics and materials summer meeting, Los Angeles, CA (United States), 28-30 Jun 1995; Other Information: PBD: 1995; Related Information: Is Part Of AMD - MD `95: Summer conference; PB: 520 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Time-dependent failure in fiber-reinforced composites by matrix and interface shear creep
A micromechanics-based strength prediction methodology for notched metal matrix composites