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Fatigue crack growth rates of rotor steel at elevated temperatures
Info
- Title:
- Fatigue crack growth rates of rotor steel at elevated temperatures
- Author(s):
- LIU Chang-hai MA Li-juan TANG Li-qiang
- Affilations:
- DOI:
- -
- Abstract:
- Low fatigue samples were obtained from the outer edges of rotor steel (30CrlMolV) which had operated under different temperatures conditions.Based on this data,the effects of temperature on fatigue crack growth rates were investigated.This paper presents a derivation of the superposition expression of two natural logarithms governing crack growth rates and also discusses the relationship between a material’s constants and temperature.These results can provide experimental and theoretical references for fatigue life design of root steel in steam turbines.
References:
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2. PARIS P C Fracture mechanics and fatigue:a historical perspective 1998
3. PARIS P C.ERDUGAM F Critical analysis of crack propagation laws 1963
4. WEBSTER G A Methods of estimating C* 1992(02)
5. SURECH S Fatigue Materials 1991
6. LIAW P K.SWARMINATHAN V P Elevated-temperature fatigue crack growth behavior of a rotor steel 1989(02)
7. E647-86a,1987.Annual Book of ASTM Standards 8. JEGLIC F ASME STP520 1973
Memo
- Memo:
- 黑龙江省自然科学基金，The Foundation of Harbin Engineering University
Last Update:
2010-06-22