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  • Users: GDfern
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  1. GDfern

    Steel HT properties MIL standards

    I had a request from a vendor to change part made from 15-5 Steel AMS 5659 with (H1025) to 17-4PH AMS 5659 with Heat treat as per AMS 2759/3. I am in structural engineering side and wanted to compare static and fatigue properties. When I requested from the vendor about temper cond. I was told it...
  2. GDfern

    Wrinkling vs Inter-rivet buckling

    Can somebody shed some light on the difference between Wrinkling vs Inter-rivet buckling. Is one more critical than the other on a riveted skin panel?
  3. GDfern

    Hoop stresses

    Hoop stresses on fuselage Hoop stresses on fuselage are mainly taken from the skin, there’s also a significant load taken by the frames. I have seen in many analysis that they ignore the contribution from the frame. Assuming that all hoop load is taken by skins that is a very conservative...

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