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  1. Sondrev

    Estimating stresses in a aluminium housing for an electric motor with cooling fins

    The photo is taken from a report created by the 3rd party inspecting the fracture for us, so yes it is. We were able to peel chips of the material on the fracture surface so it's safe to assume that it was very porous... They did a sample parallel to the casting in which they have stated the...
  2. Sondrev

    Estimating stresses in a aluminium housing for an electric motor with cooling fins

    I don't think that it is a powder metal. The Company we hired in for the manufacturing uses pure alumunium where they add the alloying elements themself to obtain the correct material composition. We checked the composition and found it to be similar to AL-6063. They did a stress test on a...
  3. Sondrev

    Estimating stresses in a aluminium housing for an electric motor with cooling fins

    Thanks for the replies. My first post so I will take that into concideration the next time. Regarding the lack of pictures/information about the fracture: I didnt want to move the discussion into finding out what caused the fracture. My main objective was to find out if my approach to the...
  4. Sondrev

    Estimating stresses in a aluminium housing for an electric motor with cooling fins

    Hi I am trying to estimate the stresses developed in an aluminium cylinder exposed to an internal pressure from shrink fitting it on to a steel cylinder. For reference think of a housing for an electric motor. The outer tube was heated to 120degC under assembly and the steel core was lowered...

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