One possible approach to the probability assessment of the vibration strength of turboengine components

Thermal Integrity in Mechanics and Engineering

“…Various aspects of such an approach were considered by , Bolotin (1965), Shorr et al (1972), Birger and Shorr (1975), and others. When using a probabilistic approach, it is still necessary to keep a certain determined distance between the operation and destruction parameters of a system.…”

“…In Birger (1970) and Shorr et al (1972), it was offered to use a determined probabilistic-statistical margin K à as a ratio of statistically extreme values of destruction r à d;min and operating r à a;max stresses…”

“…In Shorr et al (1972), such an approach has been applied to the estimation of statistically maximal variable stresses r à a;max determined by the results of stress measurement of 400 samples of turbine blades in operation conditions. The analysis has shown that to the specified requirements, it is better to satisfy the values P à ¼ 0:995 and c ¼ 0:95 at which the first Eq.…”