Critical Discussion on the Relationship between Failure Occurrence and Severity Using Reliability Functions

Arash Shahin, Mohammad Javad Ranjbar, Saeed Abedi

Abstract


In today's competitive world, the basis of many maintenance decisions is their associated risk and this parameter is directly related to occurrence and severity of failures. In this paper, the relationship between the two parameters has been investigated for which, reliability functions has been used. The results imply that this relationship is not compatible with the traditional diagram used in risk analysis approaches such as Failure Modes and Effects Analysis (FMEA) and respectively, decision making based on existing approaches might be risky. Key words: Diagram; Severity; Occurrence; Risk; FMEA; Reliability function

Keywords


Diagram; Severity; Occurrence; Risk; FMEA; Reliability function

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DOI: http://dx.doi.org/10.3968%2Fj.mse.1913035X20110501.004

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