Abstract
The fatigue crack propagation lives of low alloy steel in the heat affected zone (HAZ) and fusion zone (FZ) were estimated based on the frequency response changes in ultrasonic fatigue, which varied with the crack size during fatigue. Results showed that more than 99% of the total fatigue life was occupied by the crack initiation process for HAZ in gigacycle fatigue. However, this number was scattered for FZ specimen owing to the crack propagation from welding defects directly. A nonlinear fatigue model based on natural frequency changes was developed, which described fatigue damage for HAZ and FZ specimens successfully.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
