Advances in Materials Science and Engineering

Research Article

Multiresponse Optimization of Wire Electrical Discharge Machining Parameters for Ti-6Al-2Sn-4Zr-2Mo (α-β) Alloy Using Taguchi-Grey Relational Approach

Table 5

Results of GRA.


Experimental trial	S/N ratio		Normalized S/N ratio		Deviation sequence		Grey relational coefficient		Grey relational grade
Experimental trial	MRR	SR	MRR	SR	MRR	SR	MRR	SR	Grey relational grade

1	10.171	19.493	0.0023	0.6867	1.0000	0.3133	0.2500	0.3807	0.4994
2	7.92	34.89	0.6109	0.0042	0.3891	1.0000	0.3600	0.2500	0.4988
3	6.989	20.915	1.0000	0.4542	0.0000	0.5458	0.5000	0.3235	0.5624
4	8.796	14.334	0.2797	0.7490	0.7203	0.2510	0.2906	0.3997	0.4977
5	7.857	13.433	0.7279	0.7894	0.2721	0.2106	0.3931	0.4130	0.5623
6	9.343	20.724	0.0186	0.4628	0.9814	0.5372	0.2523	0.3253	0.4799
7	7.914	24.731	0.7007	0.2833	0.2993	0.7167	0.3848	0.2913	0.4999
8	8.494	31.057	0.4239	0.1200	0.5761	1.0000	0.3172	0.2500	0.4361
9	8.974	15.041	0.1947	0.6830	0.8053	0.3170	0.2770	0.3796	0.5597
10	9.382	17.924	0.2400	0.5381	1.0000	0.4619	0.2500	0.3420	0.4871
11	9.293	16.306	0.13000	0.6194	1.0000	0.3806	0.2500	0.3622	0.4901
12	9.057	28.636	0.0691	0.1000	0.9309	1.0000	0.2589	0.2500	0.4900
13	8.909	12.468	0.1243	0.8078	0.8757	0.1922	0.2666	0.4194	0.5648
14	8.346	16.082	0.3346	0.6220	0.6654	0.3780	0.3002	0.3628	0.5815
15	7.955	16.199	0.4806	0.6160	0.5194	0.3840	0.3291	0.3613	0.4702
16	8.585	17.202	0.2453	0.5644	0.7547	0.4356	0.2850	0.3483	0.5041
17	7.948	8.73	0.4832	1.0000	0.5168	0.0000	0.3296	0.5000	0.5454
18	7.317	13.936	0.7188	0.8788	0.2812	0.1212	0.3903	0.4459	0.5431
19	7.287	28.179	0.7300	0.0000	0.2700	1.0000	0.3937	0.2500	0.5623
20	9.242	15.289	0.0320	0.7783	1.0000	0.2217	0.2500	0.4093	0.5050
21	8.621	12.69	0.1191	0.9520	0.8809	0.0480	0.2658	0.4771	0.5848
22	8.205	16.138	0.2972	0.7216	0.7028	0.2784	0.2936	0.3911	0.4879
23	8.669	14.425	0.0985	0.8360	0.9015	0.1640	0.2630	0.4296	0.5046
24	7.805	18.489	0.4685	0.5645	0.5315	0.4355	0.3265	0.2500	0.5261
25	6.564	11.971	1.0000	1.0000	0.0056	0.0047	0.3421	0.3174	0.6584
26	6.673	17.993	1.0000	1.0000	0.1400	0.0062	0.4301	0.4320	0.7520
27	8.899	26.936	0.3526	0.3041	0.0000	0.0052	0.4591	0.5210	0.6910