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Tag: Suspension

  • Real meaning of the six RCM curves

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    by

    Murray Wiseman
    in ,

    You may be wondering about the famous “RCM curves” shown below in Figure 1. They are the Age-Reliability behavior curves which graph the Conditional Probability of failure against age. A common question is the following. “For the 139 items covered in the Nowlan & Heap (UAL) study, for example, do these curves represent the real…

  • Failure declaration standards

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    by

    Murray Wiseman
    in

    A reliability engineer points out that in a mining operation hydraulic leaks in the fleet equipment are a major source of lost production. So during regular inspections the technicians are looking for leaks and if they find them they change the appropriate hose or component. However, it seems  that they should be looking, not for…