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Lognormal distribution and maintainability in support systems research

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  • R. L. Bovaird
  • H. L. Zagor

Abstract

This article presents a method for predicting the downtime distribution for a new complex electronic equipment. A theoretical discussion is given which indicates that the downtime distribution for such an equipment can be represented by a lognormal function. Experimental data are shown which establish that the two‐parameter lognormal distribution function adequately describes the downtimes of a diverse group of electronic equipments. It is concluded that this analytical expression for the downtime distribution of complex electronic equipments provides the basis for a quantitative and scientific approach to the measurement and prediction of maintainability. This approach takes account of equipment maintenance characteristics and maintenance personnel capabilities.

Suggested Citation

  • R. L. Bovaird & H. L. Zagor, 1961. "Lognormal distribution and maintainability in support systems research," Naval Research Logistics Quarterly, John Wiley & Sons, vol. 8(4), pages 343-356, December.
    • Handle: RePEc:wly:navlog:v:8:y:1961:i:4:p:343-356
    DOI: 10.1002/nav.3800080403
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