A Hybrid Approach to Failure Analysis Using Stochastic Petri Nets and Ranking Generalized Fuzzy Numbers

Table 5

Classification operational dependability between failure modes.

State	𝑆𝑗2
Very high, many numbers of machines malfunctioned	1
Very high, loss of quality in many of machines	0.9
High, an entire machine is off, a bottleneck is made for some sets of machines	0.8
High, an entire machine is off	0.7
Average to high, the initial performance of machine is lost but some tasks are possible to perform	0.6
Average, the initial performance of machine is lost but some tasks are possible to perform	0.5
Average, machine loses its functionality in some specific tasks	0.4
Low, quality decrease in secondary functions of machines	0.3
Low, machine loses a little part of its functionality	0.2
Very low	0.1
No dependability	0