TY - JOUR ID - TI - Fatigue Crack Propagation in Ceramic Wheel Used For Gas Turbine AU - HAIDER HADI JASIM PY - 2015 VL - 15 IS - 1 SP - 103 EP - 109 JO - Basrah Journal for Engineering Sciences مجلة البصرة للعلوم الهندسية SN - 18146120 23118385 AB - This paper studies and compared the fatigue crackpropagation rate da/dN for three kinds of ceramic wheel(model A, model B, and model C) made of Si3N4 ceramic withdifferent additives used for gas turbine application. The stressintensity factor range was calculated using finite elementmethod and then compared with analytical approximateapproaches. Experimental fatigue test was carried out on thethree specimens taken from the models. As a result, the typesof additives effect on fatigue crack propagation rate. Themodel A has the highest da/dN values and model C exhibits thelower values of da/dN.

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