[Retracted] Parameters of Porosity and Compressive Strength-Based Optimization on Reinforced Aluminium from the Recycled Waste Automobile Frames

Table 3

Significant consequence for porosity.

Level	Response for SN ratio			Response for means
	Temperature (°C)	Time (sec)	Stir speed (rpm)	Temperature (°C)	Time (sec)	Stir speed (rpm)
1	−24.89	−21.69	−24.53	18.22	12.15	17.39
2	−24.68	−24.96	−24.68	17.72	17.72	17.72
3	−24.42	−27.34	−24.78	17.22	23.28	18.04
Delta	0.47	5.64	0.25	1.00	11.12	0.65
Rank	2	1	3	2	1	3

Temp: temperature in °C; t: time in sec; N: stir speed in rpm