Risk and Reliability Assessment of Metal Lathe Machining Operation with DBN-FFTA Hybrid Approach

Table 4

Expert opinions and fuzzy probability of basic events.

Basic events	E1, E2, E3, E4, and E5					Fuzzy corresponding number				d	K	Fuzzy probability
1	VL	VL	VL	L	L	0.047	0.117	0.17	0.293	0.302	3.042	0.00090782
2	M	L	L	M	H	0.342	0.515	0.515	0.687	0.236	3.404	0.00039446
3	M	L	L	L	L	0.158	0.322	0.322	0.486	0.217	3.529	0.0002958
4	VL	L	L	L	H	0.221	0.327	0.356	0.491	0.289	3.106	0.00078343
5	H	H	H	H	VH	0.658	0.792	0.823	0.927	0.336	2.888	0.0012942
6	VH	L	L	H	H	0.538	0.673	0.702	0.808	0.32	2.958	0.00110154
7	H	L	L	H	H	0.538	0.673	0.702	0.808	0.32	2.958	0.00110154
8	L	L	L	L	L	0.1	0.249	0.249	0.398	0.233	3.423	0.00037757
9	VL	VL	VL	VL	VL	0	0	0.1	0.199	0.364	2.771	0.00169434
10	VL	VL	VL	VL	VL	0	0	0.1	0.199	0.364	2.771	0.00169434
11	VH	VL	VL	M	H	0.465	0.572	0.625	0.727	0.324	2.94	0.00114815
12	M	M	M	H	H	0.439	0.615	0.615	0.791	0.248	3.33	0.00046774
13	L	L	L	M	H	0.284	0.442	0.442	0.599	0.248	3.33	0.00046774
14	H	M	M	H	H	0.527	0.688	0.688	0.849	0.283	3.137	0.00072946
15	M	M	M	L	M	0.266	0.457	0.457	0.647	0.195	3.691	0.0002037
16	H	H	H	H	H	0.598	0.747	0.747	0.896	0.309	3.009	0.00097949
17	M	L	L	M	L	0.191	0.364	0.364	0.536	0.209	3.586	0.00025942
18	VH	H	H	H	H	0.656	0.791	0.82	0.926	0.335	2.892	0.00128233
19	H	M	M	H	H	0.527	0.688	0.688	0.849	0.283	3.137	0.00072946
20	M	M	M	M	H	0.389	0.574	0.574	0.758	0.227	3.462	0.00034514
21	H	H	H	H	H	0.598	0.747	0.747	0.896	0.309	3.009	0.00097949
22	H	H	H	H	H	0.598	0.747	0.747	0.896	0.309	3.009	0.00097949
23	M	H	M	H	H	0.464	0.636	0.636	0.808	0.258	3.272	0.00053456
24	H	H	H	H	VH	0.658	0.792	0.823	0.927	0.336	2.888	0.0012942
25	L	L	L	L	VL	0.04	0.101	0.16	0.28	0.31	3.004	0.00099083
26	VL	L	L	L	L	0.07	0.176	0.205	0.34	0.271	3.2	0.00063096
27	L	L	L	L	M	0.16	0.325	0.325	0.489	0.217	3.529	0.0002958
28	VL	VL	VL	VL	VL	0	0	0.1	0.199	0.364	2.771	0.00169434
29	VL	VL	VL	VL	VL	0	0	0.1	0.199	0.364	2.771	0.00169434
30	M	H	H	H	VH	0.57	0.719	0.75	0.868	0.306	3.023	0.00094842
31	VH	VH	VH	VH	VH	0.797	0.896	0.996	0.996	0.389	2.675	0.00211349
32	M	M	M	M	H	0.389	0.574	0.574	0.758	0.227	3.462	0.00034514
33	M	L	L	M	H	0.342	0.515	0.515	0.687	0.236	3.404	0.00039446
34	M	M	M	H	H	0.439	0.615	0.615	0.791	0.248	3.33	0.00046774
35	M	M	M	H	H	0.439	0.615	0.615	0.791	0.248	3.33	0.00046774
36	M	M	M	M	M	0.299	0.498	0.498	0.697	0.189	3.739	0.00018239
37	L	L	L	M	M	0.193	0.366	0.366	0.539	0.209	3.586	0.00025942
38	H	H	H	H	H	0.598	0.747	0.747	0.896	0.309	3.009	0.00097949
39	M	M	M	M	H	0.389	0.574	0.574	0.758	0.227	3.462	0.00034514
40	M	M	M	M	H	0.389	0.574	0.574	0.758	0.227	3.462	0.00034514
41	VH	H	H	H	H	0.656	0.791	0.82	0.926	0.335	2.892	0.00128233
42	M	M	M	M	H	0.389	0.574	0.574	0.758	0.227	3.462	0.00034514
43	H	H	H	H	H	0.598	0.747	0.747	0.896	0.309	3.009	0.00097949
44	L	L	L	M	M	0.193	0.366	0.366	0.539	0.209	3.586	0.00025942
45	H	H	H	H	H	0.598	0.747	0.747	0.896	0.309	3.009	0.00097949
46	M	M	M	M	L	0.238	0.423	0.423	0.607	0.198	3.668	0.00021478
47	H	H	H	M	H	0.548	0.706	0.706	0.863	0.291	3.096	0.00080168
48	H	H	H	VH	VH	0.691	0.817	0.864	0.943	0.35	2.828	0.00148594
49	H	H	H	VH	VH	0.691	0.817	0.864	0.943	0.35	2.828	0.00148594
50	M	M	M	M	H	0.389	0.574	0.574	0.758	0.227	3.462	0.00034514
51	M	M	M	M	H	0.389	0.574	0.574	0.758	0.227	3.462	0.00034514
52	H	H	H	H	H	0.598	0.747	0.747	0.896	0.309	3.009	0.00097949
53	H	H	H	H	H	0.598	0.747	0.747	0.896	0.309	3.009	0.00097949
54	M	M	M	M	M	0.299	0.498	0.498	0.697	0.189	3.739	0.00018239
55	M	M	M	M	M	0.299	0.498	0.498	0.697	0.189	3.739	0.00018239
56	M	M	M	H	H	0.439	0.615	0.615	0.791	0.248	3.33	0.00046774
57	M	M	M	H	H	0.439	0.615	0.615	0.791	0.248	3.33	0.00046774