Optimization of welding parameters in laser welding of Ti6Al4V using VIKOR optimization method

Multi response optimization of friction stir welding in air and water by analytic hierachy process and VIKOR method

“…Let X be the decision matrix formed with the values of output responses under consideration. Then, the elements p ij of the normalized decision matrix P [32] can be calculated from the decision matrix X using the Eqs. ( 7) and ( 8):…”

“…In Table 3, the value 1 indicates equal importance, The weightage is calculated using the Eqs. ( 1) and ( 2) from [32]. For a given ith row: (1) where a ij is the element in the ith row and the jth column of matrix A.…”

“…Due to these advantages, Aravind et al [31] executed the VIKOR optimization method to optimize the parameters used for cold metal transfer welding for achieving the set criteria for the size of the reinforcement, penetration depth, width of the weld bead, and width of the heat a ected zone in Al5083 aluminum alloy welded joints. To optimize the width of the bead, penetration depth, and microhardness of the laser welded joints of titanium Ti6AL4V sheets, Aravind et al employed the VIKOR method and veri ed it with experimental results [32]. Also, the VIKOR optimization is adopted for the comprehensive analysis and evaluation in di erent elds such as crashworthiness performance in trains [33], electrical discharge machining process parameter optimization [34], material selection for thermal energy storage systems [35], ecological security of water [36] and selection of vaccine for COVID-19 [37].…”

Effect of Reinforcement on Micro Structural and Compressive Deformation Behavior on Closed Cell AA7075 Aluminium Foam

“…its low weight, high explicit stiffness, outstanding strength-to-weight ratios and significantly improved energy absorption capacities [7][8][9] . The metal aluminium foam is regarded as a substance that is solid at low pressure but behaves like a liquid under high pressure [10][11][12] .…”