A Fuzzy Reliability Model of Blades to Avoid Resonance and Its Convergence Analysis

Table 3

The influence of the flat zone on the fuzzy reliability.

Number	Precise information			Fuzzy information; (Trapezoidal)			Fuzzy information; (Flat-normal)
	Position	Length	Flat zone		Fuzzy degree			Fuzzy degree
①	180	10	175, 185	5	2.5	0.9958	0.3	1.3510	0.9963
②	180	20	170, 190	5	2.5	0.9920	0.3	1.3510	0.9926
③	180	10	175, 185	10	5	0.9938	0.1	2.3401	0.9956
④	180	20	170, 190	10	5	0.9915	0.1	2.3401	0.9918
⑤	185	10	180, 190	5	2.5	0.9765	0.3	1.3510	0.9780
⑥	185	20	175, 195	5	2.5	0.9644	0.3	1.3510	0.9654
⑦	185	10	180, 190	10	5	0.9696	0.1	2.3401	0.9755
⑧	185	20	175, 195	10	5	0.9634	0.1	2.3401	0.9635