High Temperature Slow Crack Growth of Sl3N4 Specimens Subjected to Uniaxial and Biaxial Dynamic Fatigue Loading Conditions

2008 ◽  
pp. 509-517
Author(s):  
Sung R. Choi ◽  
Noel N. Nemeth ◽  
Jonathan A. Salem ◽  
Lynn M. Powers ◽  
John P. Gyekenyesi
Keyword(s):  
High Temperature ◽  
Crack Growth ◽  
Slow Crack Growth ◽  
Fatigue Loading ◽  
Loading Conditions ◽  
Dynamic Fatigue

Dynamic Fatigue Testing of Candidate Ceramic Materials for Turbine Engines to Determine Slow-Crack-Growth Parameters

1997 ◽  
Vol 119 (2) ◽  
pp. 273-278 ◽  
Author(s):  
N. R. Osborne ◽  
G. A. Graves ◽  
M. K. Ferber
Keyword(s):  
High Temperature ◽  
Crack Growth ◽  
Prediction Models ◽  
Fatigue Testing ◽  
Growth Parameters ◽  
Slow Crack Growth ◽  
Growth Parameter ◽  
Ceramic Materials ◽  
Material Strength ◽  
Dynamic Fatigue

The purpose of this study was to evaluate the mechanical strength and slow-crack-growth parameter values for two commercially available silicon nitrides, SN-88 and NT164, at three high-temperature conditions. Weibull analysis and dynamic fatigue slow-crack-growth parameters were used to characterize the material strength and resistance to slow crack growth at high temperatures for use in life prediction models. Although both materials are commercially available Si3N4, their high-temperature behavior was found to be significantly different.

Dynamic Fatigue Testing of Candidate Ceramic Materials for Turbine Engines to Determine Slow-Crack-Growth Parameters

1995 ◽  
Author(s):  
Nora R. Osborne ◽  
George A. Graves ◽  
Matt K. Ferber
Keyword(s):  
High Temperature ◽  
Crack Growth ◽  
Prediction Models ◽  
Fatigue Testing ◽  
Growth Parameters ◽  
Slow Crack Growth ◽  
Growth Parameter ◽  
Ceramic Materials ◽  
Material Strength ◽  
Dynamic Fatigue

The purpose of this study was to evaluate the mechanical strength and slow-crack-growth parameter values for two commercially available silicon nitrides, SN-88 and NT164, at three high temperature conditions. Weibull analysis and dynamic fatigue slow-crack-growth parameters were used to characterize the material strength and resistance to slow crack growth at high temperatures for use in life prediction models. Although both materials are commercially available Si3N4, their high temperature behavior was found to be significantly different.

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