Thermo Mechanical Fatigue Testing Of Ceramic Matrix Composite Plates With a Hole

M. Xie, N. Frey, A. Nagar and C. Foreman

ABSTRACT

Ceramic matrix composite (CMC) materials have been used to manufacture high-temperature aero-propulsion systems, which are subjected to both thermal cyclic and mechanical cyclic loading. A thermo mechanical fatigue test system was designed in the present study to apply both thermal spectrum and mechanical spectrum leading to CMC plates with a central circular hole. The thermo mechanical fatigue life of CMC specimens under complex spectrum loading can be studied using this test system, as well as other high-temperature structural materials. In the present study, the thermal mechanical fatigue behavior of a ceramic matrix composite was investigated using this test system. The accumulated damage in the specimens due to thermo mechanical fatigue was studied as well.