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Different insights for improving part and system reliability obtained from exactly same DFOM “failure numbersâ€

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  • Ascher, Harold

Abstract

Techniques for improving the reliability and maintainability of both nonrepairable and repairable items can be suggested by failure data analysis. It is shown that a given set of failure numbers leads to very different improvement strategies when the numbers are the times-between-successive-failures of one or more repairable items, rather than the times-to-failure of nonrepairable items. Since this should have been obvious more than 50 years ago, at the onset of formal reliability engineering activities, several reasons are proffered for the widespread and protracted misinterpretation of even the most basic—and simple!—conceptual and practical differences between nonrepairable and repairable items.

Suggested Citation

  • Ascher, Harold, 2007. "Different insights for improving part and system reliability obtained from exactly same DFOM “failure numbersâ€," Reliability Engineering and System Safety, Elsevier, vol. 92(5), pages 552-559.
    • Handle: RePEc:eee:reensy:v:92:y:2007:i:5:p:552-559
    DOI: 10.1016/j.ress.2006.05.003
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    1. Lai, K. K. & Leung, Francis K. N. & Tao, B. & Wang, S. Y., 2000. "Practices of preventive maintenance and replacement for engines: A case study," European Journal of Operational Research, Elsevier, vol. 124(2), pages 294-306, July.
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    Cited by:

    1. Sarhan, Ammar M., 2009. "Reliability equivalence factors of a general series–parallel system," Reliability Engineering and System Safety, Elsevier, vol. 94(2), pages 229-236.

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