Reliability Analysis of the Engineering Systems Using Intuitionistic Fuzzy Set Theory

Table 2

Some reliability parameters.

Parameters	Expressions
Failure rate	MTTF𝑠=1𝜆𝑠
Repair time	MTTR𝑠=1𝜇𝑠=𝜏𝑠
MTBF	MTBF𝑠=MTTF𝑠+MTTR𝑠
ENOF	𝑊𝑠𝜆(0,𝑡)=^𝑠𝜇𝑠𝑡𝜆𝑠+𝜇𝑠+𝜆^2𝑠(𝜆𝑠+𝜇𝑠)^2[1−𝑒^−(𝜆𝑠+𝜇𝑠)𝑡]
Reliability	𝑅𝑠=𝑒^−𝜆𝑠𝑡
Availability	𝐴𝑠=𝜇𝑠𝜆𝑠+𝜇𝑠+𝜆𝑠𝜆𝑠+𝜇𝑠𝑒^−(𝜆𝑠+𝜇𝑠)𝑡