International Journal of Manufacturing Engineering / 2014 / Article / Tab 4 / Research Article
Optimization of Fusion Zone Grain Size, Hardness, and Ultimate Tensile Strength of Pulsed Current Microplasma Arc Welded AISI 304L Sheets Using Genetic Algorithm Table 4 Design matrix and experimental results.
Serial number Peak current (Amperes) Back current (Amperes) Pulse rate (pulses/second) Pulse width (%) Grain size (Microns) Hardness (VHN) Ultimate tensile strength (UTS) (Mpa) 1 −1 −1 −1 −1 20.812 198 713 2 1 −1 −1 −1 30.226 190 705 3 −1 1 −1 −1 21.508 199 718 4 1 1 −1 −1 27.536 193 706 5 −1 −1 1 −1 27.323 193 706 6 1 −1 1 −1 25.206 195 710 7 −1 1 1 −1 25.994 195 705 8 1 1 1 −1 23.491 197 706 9 −1 −1 −1 1 26.290 194 705 10 1 −1 −1 1 29.835 190 700 11 −1 1 −1 1 20.605 200 715 12 1 1 −1 1 27.764 193 708 13 −1 −1 1 1 30.095 190 698 14 1 −1 1 1 26.109 194 706 15 −1 1 1 1 27.385 193 704 16 1 1 1 1 25.013 195 710 17 −2 0 0 0 20.788 196 710 18 2 0 0 0 25.830 195 706 19 0 −2 0 0 31.663 188 701 20 0 2 0 0 27.263 193 708 21 0 0 −2 0 25.270 195 712 22 0 0 2 0 26.030 194 705 23 0 0 0 −2 24.626 195 711 24 0 0 0 2 26.626 194 705 25 0 0 0 0 24.845 196 710 26 0 0 0 0 24.845 196 710 27 0 0 0 0 20.145 200 720 28 0 0 0 0 24.845 195 710 29 0 0 0 0 20.045 201 718 30 0 0 0 0 24.845 195 710 31 0 0 0 0 20.445 198 712