Modeling of Weld Beads for Laser-GMA Hybrid Welding

Cheol Hee Kim; Nam Hyun Kang; Hyun Byung Chae; Jeong Han Kim

doi:10.4028/www.scientific.net/KEM.345-346.1481

Paper Titles

Experiment Investigation on Failure Behavior of Partial-Strength Connections with Column Skin Plate Deformation
p.1465

Influence of the Welded Joint on the Mechanical Behavior of Steel Piles during Static and Dynamic Deformation
p.1469

Viscoelastic Analysis of Adhesively Bonded Double – Lap Joint
p.1473

Surface Friction Welding of Thin Metal Sheets
p.1477

Modeling of Weld Beads for Laser-GMA Hybrid Welding
p.1481

Strength and Modal Analysis on Welded Bracket of the Large-Scale Agitator
p.1485

Numerical Analysis of Mechanical Test Methods for Evaluating Shear Strength of Joint by Using Interface Element
p.1489

Microstructural Factors Governing Mechanical Properties in Friction Stir Welds
p.1493

Interface Properties of Copper/Aluminum/Stainless Steel Clad Materials
p.1497

HomeKey Engineering MaterialsKey Engineering Materials Vols. 345-346Modeling of Weld Beads for Laser-GMA Hybrid...

Modeling of Weld Beads for Laser-GMA Hybrid Welding

Abstract:

For laser-GMA hybrid welds, the relationship between the process parameters and bead shapes was investigated by using the experimental design and the non-linear regression. The weld beads were fitted by two quadratic functions. By the statistical analysis, the primary bead was mainly affected by GMA welding parameters and the root bead was mainly by laser welding parameters. The root bead shaped deeper penetration and shallower width, as the laser power increased for the constant arc power. High laser power resulted in the martensite phase, therefore exhibiting the sudden increase of hardness as approached to the fusion line of the root bead.