Abstract
A lot of cases have been reported that fatigue cracks occur from welded parts between steel deck plates and trough ribs of highway bridge structures. In order to improve fatigue life of this kind of welded parts, welding residual stress release by post weld heat treatment is examined. A general heat treatment method by a heating furnace is not available because steel plate deck structures are so large. Therefore, applicability of a sheet-type ceramic heater as a portable heat source is investigated. A heat treatment experiment was carried out on test specimens modeling a steel plate deck with a trough rib. The effect of tensile stress release was elucidated by measuring welding residual stress and stress distribution after the heat treatment. On the other hand, the experiment was simulated by a thermal elastic plastic analysis for proposing an analysis model for simulation of heat treatment process by the sheet-type ceramic heater. Based on the experimental and analytical results, a residual stress release method for the welded parts between the deck plate and the trough rib by the portable heater was examined. Furthermore, the effect of fatigue life improvement by the stress release due to heat treatment on the specimens was investigated.
Sign-in/Register to access full text options 
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.
