Statistical Modelling to Study the Implications of Coated Tools for Machining AA 2014 Using Grey Taguchi-Based Response Surface Methodology

Table 5

L₉ Orthogonal array for fitting the input process parameters.

Experimental order	Cutting speed (rpm)	Depth of cut (mm)	Type of cutting tool
1	90	0.2	HSST-TiAlN
2	90	0.4	HSST
3	90	0.6	HSST-TiN
4	270	0.2	HSST
5	270	0.4	HSST-TiN
6	270	0.6	HSST-TiAlN
7	450	0.2	HSST-TiN
8	450	0.4	HSST-TiAlN
9	450	0.6	HSST