A method to determine the transition point of fatigue crack growth rate from near-Delta K-th to Paris regions

Authors
Zheng, JH Powell, BE
Citation
Jh. Zheng et Be. Powell, A method to determine the transition point of fatigue crack growth rate from near-Delta K-th to Paris regions, J TEST EVAL, 27(4), 1999, pp. 304-305
Citations number
4
Categorie Soggetti
Material Science & Engineering
Journal title
JOURNAL OF TESTING AND EVALUATION
ISSN journal
00903973 → ACNP
Volume
27
Issue
4
Year of publication
1999
Pages
304 - 305
Database
ISI
SICI code
0090-3973(199907)27:4<304:AMTDTT>2.0.ZU;2-F
Abstract
The transition point of fatigue crack growth (FCG) between the near-Delta K -th and the Paris regions is an important value to study fatigue behavior. This study introduces a curve-fitting technique to identify this point for nickel-based superalloy U720 with stress ratio of R = 0.1 at room temperatu re. The value of Delta K-th under these conditions is also determined.