Abstract
Thermoelastic stress analysis (TSA) using by infrared thermography has been widely used as an effective full-field stress measurement technique. The present authors applied TSA technique to nondestructive evaluation of fatigue cracks in steel bridges, in which fatigue cracks were detected based on singular stress fields observed around crack tips and structural integrity was evaluated based on stress intensity factor calculated from observed near tip stress field. In this paper, a new approach for evaluating stress intensity factor based on TSA technique is proposed. The coefficients including stress intensity factor in the near tip stress field function expressed in higher order terms are determined by the least square fitting using experimentally obtained data by TSA. It was found that values of stress intensity factors KI and KII were obtained in good accuracy.
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 callMore From: Recent Advances in Structural Integrity Analysis: Proceedings of the International Congress (APCF/SIF-2014)
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.
