DocumentCode :
1555876
Title :
Modeling and analyzing the effects of periodic inspection on the performance of safety-critical systems
Author :
Bukowski, Julia V.
Author_Institution :
Dept. of Electr. & Comput. Eng., Villanova Univ., PA, USA
Volume :
50
Issue :
3
fYear :
2001
fDate :
9/1/2001 12:00:00 AM
Firstpage :
321
Lastpage :
329
Abstract :
This paper presents a method for incorporating into Markov models of safety-critical systems, periodic inspections and repairs which occur deterministically in time. Both perfect and imperfect inspections and repairs can be modeled. Based on this new modeling technique, closed-form solutions are derived for a variety of important performance indexes including MTTF, MTTFD, MTTFS, average availability, and average probability of failing dangerously. The solutions are applied to an example system to illustrate how the method can be used to study the effects on performance of: (a) choices of the time-length between periodic inspections and repairs, and (b) improvements in inspection and repair techniques
Keywords :
Markov processes; failure analysis; inspection; safety systems; MTTF; MTTFD; MTTFS; Markov models; average availability; average probability; closed-form solutions; imperfect inspections; imperfect repairs; perfect inspections; perfect repairs; performance indexes; periodic inspections; probability of failing dangerously; safety-critical systems; Automatic control; Availability; Closed-form solution; Computer aided manufacturing; Degradation; Inspection; Performance analysis; Probability; Safety; Size control;
fLanguage :
English
Journal_Title :
Reliability, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9529
Type :
jour
DOI :
10.1109/24.974130
Filename :
974130
Link To Document :
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