Mathematical Modeling of Multiple Quality Characteristics of a Laser Microdrilling Process Used in Al7075/SiC_p Metal Matrix Composite Using Genetic Programming

Table 4

Comparison between experimental and predicted values of taper at R² = 99.43.

No.	PP (W) ()	PF (Hz) ()	AGP (kg/cm^2) ()	PW (ms) ()	Taper (deg)		Error %
					Experimental	GP
1	230	250	9	0.4	3.5	3.48E + 00	0.020539
2	230	240	8	0.4	3.702	3.68349	0.01851
3	210	220	9	0.3	3.815	3.816499	−0.0015
4	230	210	10	0.5	3.75	3.72E + 00	0.034738
5	240	250	10	0.2	4.135	4.12E + 00	0.017045
6	210	240	11	0.4	3.45	3.43E + 00	0.023249
7	230	230	12	0.3	3.925	3.86E + 00	0.064339
8	220	240	12	0.6	3.5	3.487621	0.012379
9	220	240	12	0.2	4.12	4.13E + 00	−0.00979
10	240	220	12	0.3	3.8	3.81E + 00	−0.00709
11	230	240	8	0.3	3.8	3.79E + 00	0.010771
12	220	250	8	0.3	3.962	3.96E + 00	0.006659
13	230	220	11	0.2	4.16	4.16E + 00	−0.00037
14	240	220	12	0.4	3.775	3.757363	0.017637
15	250	230	9	0.6	3.8	3.770205	0.029795
16	210	210	8	0.6	4.2	4.200192	−0.00019
17	230	220	11	0.6	3.75	3.718309	0.031691
18	220	250	8	0.2	4.05	4.10E + 00	−0.04831
19	250	210	12	0.4	4.1	3.96E + 00	0.138649
20	250	220	8	0.5	3.5	3.522696	−0.0227
21	240	240	9	0.5	3.4	3.41E + 00	−0.01021
22	210	210	8	0.2	4.1	4.10E + 00	0.00162
23	240	230	8	0.5	3.505	3.523799	−0.0188
24	210	230	10	0.4	3.58	3.633331	−0.05333
25	220	210	9	0.3	3.6	3.774172	−0.17417
26	250	250	11	0.3	3.8	3.846722	−0.04672
27	210	240	11	0.5	3.307	3.441274	−0.13427
28	250	240	10	0.2	4.1	4.105488	−0.00549
29	220	230	11	0.5	3.3	3.441037	−0.14104
30	240	250	10	0.6	3.8	3.81E + 00	−0.00654
31	230	210	10	0.6	3.305	3.638603	−0.3336
32	230	250	9	0.5	3.38	3.41E + 00	−0.03093
33	230	230	12	0.2	4.05	4.110147	−0.06015
34	210	220	9	0.2	4	4.125376	−0.12538
35	250	230	9	0.2	4.15	4.123817	0.026183
36	240	240	9	0.6	3.75	3.748872	0.001128
37	240	210	11	0.3	3.9	3.86E + 00	0.043294
38	250	210	12	0.5	3.65	3.501807	0.148193
39	210	250	12	0.6	3.25	3.47E + 00	−0.21634
40	210	250	12	0.5	3.45	3.49592	−0.04592
41	220	220	10	0.5	3.6	3.572536	0.027464
42	240	210	11	0.2	3.95	4.11E + 00	−0.16276
43	250	220	8	0.6	3.6	4.114297	−0.5143
44	220	220	10	0.4	3.8	3.694675	0.105325
45	250	250	11	0.4	3.9	3.655343	0.244657
46	240	230	8	0.4	3.6	3.615975	−0.01597
47	220	230	11	0.6	3.4	3.677536	−0.27754
48	220	210	9	0.4	3.5	3.48E + 00	0.023193
49	250	240	10	0.3	3.8	3.80E + 00	0.004566
50	230	250	9	0.4	3.5	3.48E + 00	0.020539