Experimental Evaluation of Erosion of Gunmetal under Asymmetrical Shaped Sand Particle

Table 11

Variation of erosion rate with different operating conditions for gunmetal (experimental design using L₂₇ orthogonal array for Taguchi method analysis).

Exp. number	Impact velocity 1 (m/s)	Impingement angle; 2 (degree)	Particle size; 3 (μm)	Stand-off distance; 4 (mm)	Erosion rate (); mg/kg	ratio; (dB)
1	30	30	300–355	15	1687.833	−64.5466
2	30	30	355–500	20	1298.000	−62.2655
3	30	30	500–600	25	1238.000	−61.8544
4	30	60	300–355	20	1172.167	−61.3798
5	30	60	355–500	25	1105.500	−60.8712
6	30	60	500–600	15	1512.000	−63.591
7	30	90	300–355	25	957.833	−59.6258
8	30	90	355–500	15	1393.667	−62.8832
9	30	90	500–600	20	1077.667	−60.6497
10	40	30	300–355	20	1628.667	−64.2366
11	40	30	355–500	25	1501.333	−63.5295
12	40	30	500–600	15	2211.167	−66.8924
13	40	60	300–355	25	297.587	−49.4723
14	40	60	355–500	15	2002.167	−66.03
15	40	60	500–600	20	1540.167	−63.7514
16	40	90	300–355	15	1699.833	−64.6081
17	40	90	355–500	20	1357.833	−62.6569
18	40	90	500–600	25	1193.000	−61.5328
19	50	30	300–355	25	1791.500	−65.0643
20	50	30	355–500	15	2605.000	−68.3162
21	50	30	500–600	20	2031.000	−66.1542
22	50	60	300–355	15	2347.500	−67.4121
23	50	60	355–500	20	1846.000	−65.3246
24	50	60	500–600	25	1694.500	−64.5808
25	50	90	300–355	20	1597.833	−64.0706
26	50	90	355–500	25	1491.000	−63.4696
27	50	90	500–600	15	2168.667	−66.7239