[Retracted] Experimental Analysis and Optimization of Tribological Properties of Self-Lubricating Aluminum Hybrid Nanocomposites Using the Taguchi Approach

Table 9

Evaluation of best outcomes of confirmation tests.

Levels	Combination of parameters	Prediction	Investigation of experimentations
	A2B3C3D2	A3B1C1D1
Wear (g)	0.02877	0.00096	0.0015
S/N ratio (dB)	29.7326	52.1907	52.6524
Improvement of S/N ratio: 22.9198
	A1B3C3D3	A3B1C1D1
Coefficient of friction (µ)	0.1687	0.1044	0.1152
SN ratio (dB)	15.3819	19.6292	20.1695
Improvement of S/N ratio: 4.7876