Other solid-state welding processes include friction welding (including friction stir welding), magnetic pulse welding, co-extrusion welding, cold welding, diffusion bonding, exothermic welding, high frequency welding, hot pressure welding, induction welding, and roll welding.
Present rules in fabrication codes are aimed to reduce the probability of fatigue cracks in flanges welded to pressure vessels subjected to cyclic pressure or vibrations.
AAO method was tested with five well-known benchmark structural problems i.e.: welded beam, pressure vessel, speed reducer, spring design and gear train problem.
In this section, the performance of the proposed SA-MFO is evaluated using four well-known engineering problems, namely three-bar truss, welded beam, pressure vessel and tension/compression spring design problems.
Moreover, the proposed method is also tested by five classical engineering design problems including tension/compression spring, welded beam, pressure vessel designs, Gear train design, and Cantilever beam design and a high constraint optimization problem known as Optimal Power Flow (OPF) which is a high constraint electrical engineering problem.
The extrusion load for each stage, the welding pressure, and the dead metal zone in the welding chamber were examined through a numerical analysis.
The strength of the weld is maximized by optimizing the parameters like amplitude, welding pressure and weld time.
It was found that although weld pressure affected the fatigue strength, the welded specimens all had similar fatigue behaviour.
