Abstract
The probabilistic modelling on uniaxial tensile properties and fatigue life data is required for the safe gas turbine design. The probabilistic model will help the designer to calculate the risk factor at the applied load level and choose the proper safety factor. The suitability of Weibull and Lognormal probabilistic tensile and fatigue life prediction models at different temperatures are presented in this work. Mean, upper bound, and lower bound curves are presented in the probabilistic models. The tensile properties and fatigue life prediction curves are compared with experimental data of Ti-685 alloy at various temperatures.
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