Abstract
The present paper investigates statistical variation in the growth rates (da/dN) of multiple small surface cracks in a JIS S 45 C steel subjected to rotating bending fatigue in air. The growth rates of the cracks were found to follow a power law : da/dN = C(σa√((πa))m where a is the half surface length of each crack and σa the applied stress amplitude. C and m in the law varied among the multiple cracks, and obeyed the normal and the log-normal distribution, respectively ; nevertheless, they were related to each other by C = A/Bm where A and B are some constants. The 95% confidence limits of the variation in da/dN of the multiple small surface cracks were calculated by using these statistical data.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A
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.