Advances in Tribology

Research Article

Mathematical Modeling of the Bearing Ratio Curve Rmr (50% Rz), through Investigation of the Effect of Process Parameters in Hard Turning of Steel C55 (DIN) with Mixed Ceramics MC2 (Al2O3 + TiC)

Table 2

Four factorial first-order design of the experiment.
Experiment No.Encoded plan matrixRmr (50 Rz) (%)Roughness Rz (μm)
X0X1X2X3X4
11−1−1−1−1——
211−1−1−1——
31−11−1−1——
4111−1−1——
51−1−11−1——
611−11−1——
71−111−1——
81111−1——
91−1−1−11——
1011−1−11——
111−11−11——
12111−11——
131−1−111——
1411−111——
151−1111——
1611111——
1700000——
1800000——
1900000——
2000000——