Nr. Osborne et al., DYNAMIC FATIGUE TESTING OF CANDIDATE CERAMIC MATERIALS FOR TURBINE-ENGINES TO DETERMINE SLOW-CRACK-GROWTH PARAMETERS, Journal of engineering for gas turbines and power, 119(2), 1997, pp. 273-278
The purpose of this study was to evaluate the mechanical strength and
slow-crack-growth parameter values for two commercially available sili
con nitrides, SN-88 and NT164, at three high-temperature conditions, W
eibull analysis and dynamic fatigue slow-crack-growth parameters were
used to characterize the material strength and resistance to slow crac
k growth at high temperatures for Else in life prediction models. Alth
ough both materials are commercially available Si3N4, their high-tempe
rature behavior was found to be significantly different.