In gas turbines, the centrifugal force is higher during operation that all other forces. It is well established that this is the main cause of blade failure in gas turbines. Table 3 summarizes the results of the static analysis for the five different blade materials considered in this study.
• Al and Mg are found to be with in the yield stress, even at 10% higher centrifugal force
• CI blades are the worst candidates with yielding occurring at 20% lesser forces than normal values
• Stainless steel is okay up to 10% lesser forces than normal values
• Ti is found to be the best material with safe limits over 20% of the normal centrifugal force