Analysis of the Thermo-Mechanical Fatigue Response of Metal Matrix Composite Laminates with Interfacial Normal and Shear Failure

2009 ◽  
pp. 236-236-16
Author(s):  
DD Robertson ◽  
S Mall
Keyword(s):  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Composite Laminates ◽  
Metal Matrix ◽  
Shear Failure ◽  
Mechanical Fatigue

scholarly journals The Effect of Phase Angle on the Thermo-Mechanical Fatigue Life of a Titanium Metal Matrix Composite

Materials ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 953
Author(s):  
Ashley Dyer ◽  
Jonathan Jones ◽  
Richard Cutts ◽  
Mark Whittaker
Keyword(s):  
Crack Initiation ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Electron Backscatter Diffraction ◽  
Fatigue Crack Initiation ◽  
Test Results ◽  
Phase Cycling ◽  
Mechanical Fatigue ◽  
Backscatter Diffraction

The thermo-mechanical fatigue (TMF) behaviour of a Ti-6Al-4V matrix composite reinforced with SCS-6 silicon carbide fibres (140 μm longitudinal fibres, laid up hexagonally) has been investigated. In-phase and out-of-phase TMF cycles were utilized, cycling between 80–300 °C, with varying maximum stress. The microstructure and fracture surfaces were studied using electron backscatter diffraction (EBSD), energy-dispersive X-ray spectroscopy (EDS), scanning electron microscopy (SEM), profilometry, and optical microscopy. The results have shown the damaging effect of out-of-phase cycling with crack initiation occurring earlier than in in-phase tests and crack propagation rates being accelerated in out-of-phase cycles. Fatigue crack initiation has been shown to be sensitive to crystallographic texture in the cladding material and thermo-mechanical fatigue test results can be considered according to a previously proposed conceptual framework for the interpretation of metal matrix composite fatigue.

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