The present contribution is the first research reporting full penetration HLAW joints in 15 mm thick EH36 steel butt T-welds with square grooves on 2F welding position by single-sided welding. effects of parameters were investigated to increase quality joints. Conditions leading defect-free welds fulfilling naval regulations includes a laser power 12.5 kW, speed 1.6 m/min and vertical offset di...

Considerable research has been carried out to study the laser welding of magnesium alloys. However, studies are mainly devoted butt welding, and there limited information in published literature concerning bead-on-plate AZ91D, even though is required for repair cast AZ91D parts with surface defects. In present investigation, cracking weld metal was observed when an alloy welded using method. Th...

welding is one of the most important assembling methods which are widely applied in different applications. in service conditions, some of the weld joints which meet defects must be repaired. the residual stresses impress the operation and efficiency of the repair weldment. in this study, the temperature and the residual stress fields were investigated by both the finite element simulation and ...

The present investigation's main goal is to assess butt joint and T-joint plates containing misalignment, undercut porosity welding defects by studying the influence of defect’s parameters on fatigue life. life predicted using ANSYS ver. 19 Software. results finite element analysis are used in regression find relationship between parameters. findings demonstrated that modeling pervious publishe...

Abstract Duplex stainless steel has been widely applied to industry. In this paper, nondestructive testing, chemical composition analysis, metallographic hardness test, and scanning electron microscope were used study the causes of crack in butt joint girth weld pipe flange. Both flange are duplex S31803. Through it was judged that a crystalline crack, generated welding process, which related p...