Table 5 Mean grey relational grade at each level
Process parameters | Grey relational grade | Max.–Min. | Rank | |||
|---|---|---|---|---|---|---|
Level (1) | Level (2) | Level (3) | Level (4) | |||
Coating Type | 0.3718 | 0.4247 | 0.5390 | 0.7708 | 0.3990 | 1 |
Coating Side Temperature, °C | 0.4987 | 0.5516 | 0.5568 | 0.4993 | 0.0581 | 4 |
Coating Thickness, μm | 0.4425 | 0.4860 | 0.5282 | 0.6497 | 0.2072 | 2 |
Bond Coating Thickness, μm | 0.5251 | 0.5723 | 0.5255 | 0.4834 | 0.0888 | 3 |
Total mean GRG = 0.5266 | ||||||