A STUDY ON KERF TAPER AND SURFACE ROUGHNESS IN Nd: YAG LASER BEAM CUTTING BASED ON TAGUCHI METHOD
Keywords:
Laser Beam Cutting, SUPERNI 718, Taguchi method, Kerf Taper, Surface RoughnessAbstract
This paper presents an investigation on the effect and optimization of laser cutting parameters on the performance characteristic during laser beam cutting of SUPERNI 718 thin sheet. Kerf taper and surface roughness is considered as performance characteristics. The experimental studies were conducted under varying oxygen pressure, pulse width, pulse frequency, and cutting speed. The settings of cutting parameters were determined by using Taguchi experimental design method. Analysis of variance (ANOVA) has been used to determine the level of significance on the kerf taper and surface roughness. The optimum cutting parameters was obtained by using the analysis of signal-to-noise (S/N) ratio. Confirmation experiments have been done to verify the optimum results and considerable improvement has been found for both quality characteristics using Taguchi methodology.
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