Prediction of Crack for Drilling Process on Alumina Using Neural Network and Taguchi Method

Table 4

Experimental results for cracking percentage.

Trial number					Cracking area percentage (%)		ratio
					1	1		1	1	1	11.496	11.109
2	1	2	2	2	17.925	18.721
3	1	3	3	3	102.952	104.514
4	2	1	1	2	16.219	15.279
5	2	2	2	3	18.135	16.563
6	2	3	3	1	41.316	39.838
7	3	1	2	1	14.158	14.687
8	3	2	3	2	38.682	37.350
9	3	3	1	3	25.149	24.122
10	1	1	3	3	88.434	84.236
11	1	2	1	1	7.983	8.494
12	1	3	2	2	33.928	32.161
13	2	1	2	3	25.284	22.371
14	2	2	3	1	9.261	10.583
15	2	3	1	2	15.823	17.460
16	3	1	3	2	39.655	43.122
17	3	2	1	3	19.118	20.347
18	3	3	2	1	30.436	28.187