Thermomechanical fatigue behavior of a quasi-isotropic SCS-6/Ti-15-3 metal matrix composite

Article Abstract:

Out-of-phase thermomechanical fatigue (OP-TMF), in-phase TMF (IP-TMF) and isothermal fatigue (IF) tests in a quasi-isotropic metal matrix composite laminate show that the fatigue response depends on the maximum stress and on the test conditions. Failure model analysis indicates that applied stress and fatigue condition influence the failure mode. High stresses in the presence of IF and IP-TMF cause a fiber dominated failure while low stresses in the presence of OP-TMF cause matrix dominated failure.

Analysis, Thermal stresses, Ceramic-matrix composites, Ceramic matrix composites

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Characterization of fatigue behavior in cross-ply laminate of SCS-6/Ti-15-3 metal matrix composite at elevated temperature

Article Abstract:

The high-temperature fatigue behavior of a cross-ply laminate of SCS-6/Ti-15-3 metal matrix composite is evaluated through experimental procedures. Fatigue tests are conducted in a servohydraulic machine wherein several composite laminate specimens are subjected to varying load and frequency conditions at a constant temperature of 427 degrees centigrade. Results show that the fatigue behavior of the materials are significantly affected by the system frequency level.

Fatigue (Materials), Materials, Laminated materials, Laminates

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Fatigue behavior of cross-ply metal matrix composite at elevated temperature under the strain controlled mode

Article Abstract:

A cross-ply SCS-6/Ti-15-3 metal matrix composite was subjected to fully-reversed, strain-controlled fatigue loading at 427 degrees Centigrade to examine its fatigue behavior. Optical and scanning electron microscopes were used to identify the damage mechanisms. A fatigue life diagram was then constructed based on the results to show the correlation between fatigue life and the damage mechanisms.

Metallic composites, Strains and stresses, Stresses (Materials)

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