An efficient model for the TIG‐dressing process numerical simulation. Issue 3 (7th February 2019)

• Record Type: Journal Article
• Authors: Ferro, Paolo; Romanin, Luca
• Is Part Of: Material design & processing communications. Volume 1:Issue 3(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-02-07
• Subjects: microstructure -- numerical modelling -- phase transformation -- residual stress -- TIG‐dressing -- welding; Materials -- Research -- Periodicals; Materials -- Design -- Periodicals; Materials -- Research; Materials -- Design; Electronic journals; Periodicals; 620.11
• DOI: 10.1002/mdp2.35
• Languages: English
• ISSNs: 2577-5476

Abstract

Abstract: TIG‐dressing is a post‐welding operation consisting in the remelting of the weld toe region aimed to promote a reduction of the stress concentration effect in that zone by an induced smoother transition between the plate and the weld crown. Furthermore, a residual stress redistribution is expected that contributes to enhance the fatigue strength of the welded joint. Unfortunately, these effects are very difficult to be quantified by numerical simulation since a highly coupled thermo‐fluid‐mechanical analysis is required. In this scenario, a simplified numerical model of the TIG‐dressing process is proposed that overcomes the necessity to use a coupled thermo‐fluid‐mechanical analysis.