Hybrid Integration of Taguchi Parametric Design, Grey Relational Analysis, and Principal Component Analysis Optimization for Plastic Gear Production

Table 7

Calculated grey relational coefficient for nine comparability sequences.

Trials	Grey relational coefficient
	Tooth thickness (mm)	Addendum circle (mm)	Dedendum circle (mm)
1	0.3333	0.7991	0.9536
2	0.4391	0.8948	1.0000
3	0.5584	0.5572	0.6102
4	0.7855	0.5159	0.8652
5	0.7946	1.0000	0.7009
6	0.8777	0.7885	0.7291
7	0.6778	0.5568	0.5547
8	1.0000	0.3333	0.3761
9	0.7200	0.4680	0.3333