Reliability Importance Measures considering Performance and Costs of Mechanical Hydraulic System for Hydraulic Excavators

Table 5

Detectivity evaluation criteria.

Detectivity	Control	Ranking	Coefficient
Absolute uncertainty	No control. Design control will not and/or cannot detect a potential cause/mechanism and subsequent failure mode	10	1.0
Very remote	Very remote chance the design controls will detect a potential cause/mechanism and subsequent failure mode	9	0.9
Remote	Remote chance the design controls will detect a potential cause/mechanism and subsequent failure mode	8	0.8
Very low	Very low the design controls will detect a potential cause/mechanism and subsequent failure mode	7	0.7
Low	Low chance the design controls will detect a potential cause/mechanism and subsequent failure mode	6	0.6
Moderate	Moderate chance the design controls will detect a potential cause/mechanism and subsequent failure mode	5	0.5
Moderately high	Moderately high chance the design controls will detect a potential cause/mechanism and subsequent failure mode	4	0.4
High	High chance the design controls will detect a potential cause/mechanism and subsequent failure mode	3	0.3
Very high	Very high chance the design controls will detect a potential cause/mechanism and subsequent failure mode	2	0.2
Almost certain	Design controls will almost certainly detect a potential cause/mechanism and subsequent failure mode	1	0.1