Abstract
Expressions, cited in the literature, that describe the relation between deformation fatigue curve parameters and short surface crack growth parameters for limited lifetimes are examined. The relation between initial defect sizes and average grain sizes over the range of high-cycle fatigue lifetimes is introduced. Fatigue curves, plotted by the above relations, are in good agreement as to the criterion of origin of a 100-μm surface crack with experimental data for 45, 12KhN3A, and 40Kh steels. Such a result opens the way to calculation-experimental estimation of lifetime before the origin of a short crack without its direct measurement in the experiment.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.