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  1. w154

    Help on Fatigue Life Prediction (Goodman?)

    Hi all I am trying to do a calc that is maybe quite simple, but I am getting confused and any help would be really appreciated. I have one S/N line for a driveshaft (i.e. at on stress ratio which is 0.3). I also have the UTS for that driveshaft. I need to predict the fatigue life of the...
  2. w154

    Real time fatigue data

    Thanks Greg The data I have includes some very low torque / high cycle data, but it also includes some very high torque / low cycle data. That means I have a mix of high and low cycle data, hence the reason I think I need to take the mean torques into account. An example would be something...
  3. w154

    Real time fatigue data

    I am looking for help ! I have "accumulation rainflow" data for propshaft torques, and I need to understand the overall "damage" that this would cause. My data is a matrix of Mean Torque and Torque Amplitude, with the individual cells showing the accumulated cycles at each condition. If all...

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