Laser welding is most numerous often an autogenous (self-fusing) proces without added filler material. This means that weld joint fit-up is more critical than for conventional welding processe sum of two units parameters determine how precise a fit-up should be the first is the desired weld toughness and the second is the focused reproach size.
Weld impregnability (either shear or tensile, static or fatigue) is a function of the weld cross-sectional area at the joint interface. A large fit- up gap flows in an undercut weld or voids, which resolve into the cross- sectional area. This in
