Prediction of Mechanical Properties of Aluminium Alloy Strip Using the Extreme Learning Machine Model Optimized by the Gray Wolf Algorithm

Table 1

Statistical information on input parameters.

Number	Parameter	Unit	Mean	Std	Min	Max
1	Machine speed	(m/min)	21.352	8.735	7.0	48.0
2	Heating temperature-1	(°C)	418.130	100.595	314.9	575.0
3	Heating temperature-2	(°C)	419.368	101.832	314.8	575.1
4	Heating temperature-3	(°C)	419.094	101.684	314.8	575.0
5	Heating temperature-4	(°C)	418.385	101.255	315.1	575.0
6	Heating temperature-5	(°C)	418.247	101.283	314.9	574.9
7	Heating temperature-6	(°C)	417.496	100.936	315.0	575.2
8	Heating temperature-7	(°C)	417.301	101.120	310.4	575.3
9	Heating temperature-8	(°C)	417.449	101.091	310.4	575.7
10	Heating temperature-9	(°C)	417.466	101.057	310.5	575.5
11	Heating temperature-10	(°C)	417.507	101.047	310.5	575.6
12	Heating temperature-11	(°C)	417.398	101.079	310.6	575.4
13	Heating temperature-12	(°C)	412.836	104.010	309.8	574.9
14	Elongation of tension bending straightening 1	(%)	0.312	0.454	0	1.0
15	Preageing temperature 1	(°C)	19.535	4.991	11.0	33.3
16	Preageing temperature 2	(°C)	19.973	5.46918	11.2	38.1
17	Preageing speed	(m/min)	22.267	8.290	8.0	49.0
18	Coiling tension	(N/mm^2)	12.008	0.488	7.0	13.0
19	Depression distance of tension bending straightening	(mm)	0.428	0.273	0.036	0.979
20	Pretension of tension bending straightening	(N/mm^2)	50.088	15.883	17.0	90.0
21	Post-tension of tension bending straightening	(N/mm^2)	50.088	15.883	17.0	90.0
22	Elongation of tension bending straightening 2	(%)	0.312	0.454	0	1.0