Identification of the parameters of steady creep of heat-resistant materials

The article analyzes methods of direct identification of the coefficients in the determining equations of creep. A method is suggested for calculating the parameters of steady creep based on the evaluation of their statistical significance. To evaluate the confidence coefficient of these parameters, the theoretical and experimental characteristics of the scatter of the logarithms of the time to cumulation of stipulated creep strain are compared with the aid of the Fisher test. The characteristic of scatter of the logarithms of time to rupture is also examined. The method was tried out on the class of heat-resistant nickel alloys.