Multiresponse Optimization of Process Parameters in Turning of GFRP Using TOPSIS Method

Table 10

Results of confirmation for surface roughness ().

	Initial process parameter	Optimal process parameters
		Prediction	Experiment
Level	--		--
	2.60		1.9
/ ratio (dB)	−8.2995	−6.28783	−5.5751
Improvement of / ratio = 2.7244 dB