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 parametersExperimental valuesGA values

Grain size
Peak current (Amperes)76.634
Back current (Amperes)43.851
Pulse rate (pulses/second)4036.386
Pulse width (%)5055.011
Grain size (Microns)20.04522.13219

Hardness
Peak current (Amperes)76.517
Back current (Amperes)44.117
Pulse rate (pulses/second)4030.276
Pulse width (%)5040.4843
Hardness (VHN)201201.033981

Ultimate tensile strength
Peak current (Amperes)76.514
Back current (Amperes)43.912
Pulse rate (pulses/second)4030.098
Pulse width (%)5040.004
Ultimate tensile strength (Mpa)720718.7376