[Retracted] Green Machining Characteristics Study of Al-6063 in CNC Milling Using Taguchi Method and Grey Relational Analysis

Table 14

Confirmatory runs.

Tool	Type	Predicted				Achieved	Predicted	Achieved
		Dry run	Dry run MRR	Dry run	Dry run MRR	MQL	MQL	MQL	MQL
		Ra		Ra		Ra	MRR	Ra	MRR
Taguchi	Single response (Ra)	0.76	—	0.81	—	0.71	—	0.73	—
	Single response (MRR)	—	0.236	—	0.255	—	0.265	—	0.302
GRA	Multiresponse	2.28	2.038	2.30	2.054	2.14	2.042	2.11	2.15
% deviation
Single response (Ra)				5				2
Single response (MRR)					1.9				3.7
GRA multiresponse				2	1.6			3	4