The fatigue limit and its elimination
作者： Miller , O’donnell
DOI: 10.1046/J.1460-2695.1999.00204.X
关键词:
摘要: The classical fatigue limit of ferrous metals is a consequence testing materials at constant range cyclic stress and determining the below which failures do not occur. This material equated to condition for cracks can propagate beyond microstructural barriers. paper discusses causes, leading elimination this limit, including introduction transitory cyclic-dependent mechanisms time-dependent processes that will permit previously non-propagating crack grow across different threshold states expressed in terms linear-elastic fracture mechanics (LEFM), elastic-plastic (EPFM) (MFM). These include loading environmental conditions, long-life engineering plant (e.g. 30 years lifetime) lead apparently premature failures. Of greater concern creation new crack-initiation zone, i.e. transfer from surface-generated an internal-generated eventually dominates failure event. impact these conditions on necessitates changes Design Codes Practice, such are discussed relation extremely long-lifetime regime (10 7
sci-hub.se 参考文章(19)
KJ Miller, The three thresholds for fatigue crack propagation ASTM special technical publications. pp. 267- 286 ,(1997) , 10.1520/STP16238S
D.L. Berry, N.H. Clark, Report of results of nuclear power plant aging workshops ,(1984)
R. Steele, J.A. Rose, B.G. Cornwell, K.G. DeWall, Survey of aged power plant facilities ,(1985)
CH Wells, CP Sullivan, M Gell, Mechanisms of Fatigue in the Creep Range ASTM International. ,(1971) , 10.1520/STP26685S
VN Shah, WL Server, GR Odette, AS Amar, Residual life assessment of light water reactor pressure vessels ASTM International. ,(1987) , 10.1520/STP10393S
K. J. Miller, R. Akid, The application of microstructural fracture mechanics to various metal surface states Materials Science. ,vol. 33, pp. 1- 20 ,(1997) , 10.1007/BF02539123
A. Navarro, E. R. de los Rios, Short and long fatigue crack growth: A unified model Philosophical Magazine. ,vol. 57, pp. 15- 36 ,(1988) , 10.1080/01418618808204496
K J Miller, D J Hatter, Increases in fatigue life caused by the introduction of rest periods Journal of Strain Analysis for Engineering Design. ,vol. 7, pp. 69- 73 ,(1972) , 10.1243/03093247V071069
Y Murakami, Super-long life tension–compression fatigue properties of quenched and tempered 0.46% carbon steel International Journal of Fatigue. ,vol. 20, pp. 661- 667 ,(1998) , 10.1016/S0142-1123(98)00028-0
W. Rizk, D. F. Seymour, Investigations into the Failure of Gas Circulators and Circuit Components at Hinkley Point Nuclear Power Station Proceedings of the Institution of Mechanical Engineers. ,vol. 179, pp. 627- 703 ,(1964) , 10.1243/PIME_PROC_1964_179_042_02