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no MTBF/DPM conversion possible

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  • #38657

    Steven
    Member

    Looks like there is no simple conversion from MTBF to DPM. I can come up with MTBF on PCA designs, but my defect data only goes back one year-thus I can come up with DPM by using ship data & defect data for 1 year. What is the best software program for calculating MTBF on PCAs? Relex?Steven

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    #116021

    Bob J
    Participant

    Steven,
    For most applications we use excel or Minitab…  Relex is good for reliability prediction work but may be significant overkill for what you are trying to do…
    Best Regards,
    Bob J

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    #116022

    Bob J
    Participant

    Steven,
    A couple of thoughts on what I think you are trying to do….  If you have a product that you are reasonably sure will come back to you when it fails and you have a large installed base, you might be able to do some rough MTBF calculations…
    Before I go too far, a couple of quick questions….  How familiar are you with Weibull and do you have minitab…
    Best Regards,
    Bob J
     

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