International Journal of Manufacturing Engineering / 2014 / Article / Tab 7 / 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 7 Comparison of GA and experimental values.
Welding parameters Experimental values GA values Grain size Peak current (Amperes) 7 6.634 Back current (Amperes) 4 3.851 Pulse rate (pulses/second) 40 36.386 Pulse width (%) 50 55.011 Grain size (Microns) 20.045 22.13219 Hardness Peak current (Amperes) 7 6.517 Back current (Amperes) 4 4.117 Pulse rate (pulses/second) 40 30.276 Pulse width (%) 50 40.4843 Hardness (VHN) 201 201.033981 Ultimate tensile strength Peak current (Amperes) 7 6.514 Back current (Amperes) 4 3.912 Pulse rate (pulses/second) 40 30.098 Pulse width (%) 50 40.004 Ultimate tensile strength (Mpa) 720 718.7376