Analysis of failure prediction methods

This paper describes the effects of constant and varied maintenance strategies through an example of artificially generated failure data. During the constant maintenance strategy two main cases are distinguished. In the first example constant number of failures while in the second example specified percentage of failures are prevented with maintenance every year. Through the case study of the varied maintenance strategy growing and decreasing maintenance methods are examined. Thereafter the CROW-AMSAA model is presented through an illustrative example, and compared with the most popular Weibull distribution method as for the advantages and disadvantages of each technique. In the final section of the paper a set of equipment, where there is a high percentage of intact items in the system, is examined with the help of right censoring.