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  1. cycletesting

    Determining Weibull Slope

    Right, if we test to failure then we know Beta but we normaly suspended the samples if they went beyond some target number of cycles that was corolated to some x-times the expected life. This resulted in less test time so we could move on to the next component with limited equipment. When we...
  2. cycletesting

    Determining Weibull Slope

    I found this paper that seems to be going in the right direction but no clear examples... http://www.stat.iastate.edu/preprint/articles/2002-03.pdf Am I at least on the right track or off in the weeds?
  3. cycletesting

    Determining Weibull Slope

    My background is mostly test engineering & test management. I worked with Reliability Engineers in the old company but now am trying to find my own way through the Weibull statistical labyrinth. In the old company I worked for we had several years of prior fatigue data with similar designs to...
  4. cycletesting

    Nikasil vs Iron Liners

    Both types of cylinders suffered some heat distortion as well as distortion form torquing the head down. "Torque Plates" were required on both designs when honing. The total power loss from cold to hot was pretty much the same, in other words both lost equal power once hot. The design life for...
  5. cycletesting

    Nikasil vs Iron Liners

    Back in the air cooled Buell Racing days we always changed production cylinders (Iron lined with cast aluminum fins) to aluminium with Nikasil coating (just cast without the liner). Seemed to help cylinder cooling quite a bit even with the same fin aera between the two designs. Pistons had...
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