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  • Users: NZHEng
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  1. NZHEng

    Grinding and Shot Peening

    Hi I am designing a fatigue resistant shear pin. The pin is essentially a tube with three plugs lightly pressed into the bore. The plugs control the shear planes (double shear). The tube is 50 mm OD (g6), 44 mm ID (H7), 140 mm long. The material is 4140T. Due to the interaction of the plugs...
  2. NZHEng

    Shear Pin Theory & Practice

    Hi All I am currently redesigning a shear pin for a hydro turbine. The nature of the fluctuating loads makes this a very difficult problem from a fatigue stand-point and the pin solutions are, as a result, novel. As the selected material options are quite ductile I completed bench testing and...

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