Experimental investigation and fuzzy logic modelling of CO<SUB align="right">2 laser cutting parameter for AA6061-T6 sheet

The laser machining is a thermal energy-based process. The
aluminium alloy is a highly reflective material which is difficult to cut by using
the laser cutting process. The present paper experimentally investigated about
the CO2 laser cutting of aluminium AA6061-T6 alloy material for the
improvement of geometrical accuracy of the curved profile at the same time to
minimise the top, bottom kerf width and kerf deviations. The experiments are
carried out by using fuzzy logic approach and to predict the effect of CO2 laser
cutting quality based on the cutting parameters on laser power, cutting speed,
gas pressure and focal position. The fuzzy logic model is used on fuzzy logic
tool box of MATLAB using Mamdani technique. The relationship between
experimental value and fuzzy model are compared. Finally, based on the
results, the proposed fuzzy logic models are minimised to top, bottom kerf
width and kerf deviations of CO2 laser cutting of AA6061-T6 aluminium
alloys.