Table 6 Regression equations with R2 values for different tool conditions.

From: Machinability and ANN based prediction of surface roughness for TiAlN and PCD coated end mill cutters on AA6061 hybrid composite

Response

Regression equation (coded SS, DoC, FR)

R2

Surface roughness, UCC

4.0456 − 0.0489·SS + 1.3041·DoC − 0.2448·FR − 0.0901·SS2 + 0.5954·DoC2 − 0.4402·FR2 − 0.3468·SS·DoC + 0.1387·SS·FR + 0.2826·DoC·FR

0.9997

Surface roughness, TiAlN

0.4671 − 0.0211·SS + 0.0994·DoC + 0.0299·FR + 0.0127·SS2 + 0.0219·DoC2 − 0.0055·FR2 − 0.0172·SS·DoC − 0.0109·SS·FR − 0.0086·DoC·FR

0.9978

Surface roughness, PCD

0.2413 − 0.0196·SS + 0.0923·DoC + 0.0791·FR − 0.0059·SS2 + 0.0131·DoC2 − 0.0066·FR2 − 0.0257·SS·DoC − 0.0181·SS·FR − 0.0110·DoC·FR

0.9948

Width to thickness ratio, UCC

6.4324 + 0.5518·SS + 2.6722·DoC + 1.0435·FR − 0.2146·SS2 − 0.4283·DoC2 − 0.1930·FR2 − 0.6294·SS·DoC + 0.3171·SS·FR + 0.2786·DoC·FR

0.9956

Width to thickness ratio, TiAlN

20.4376 − 1.9485·SS − 2.3714·DoC − 0.9284·FR − 0.3141·SS2 − 0.3714·DoC2 − 0.1418·FR2 + 0.5423·SS·DoC + 0.2856·SS·FR + 0.1428·DoC·FR

0.9968

Width to thickness ratio, PCD

18.0937 − 1.5126·SS + 6.1287·DoC + 4.1395·FR − 0.3940·SS2 + 0.6011·DoC2 − 0.2834·FR2 − 0.6517·SS·DoC + 0.3848·SS·FR + 0.2845·DoC·FR

0.9997

Back to article page