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  1. leafsprung

    Automotive Failure Analysis

    Looking at the first image I posted the shaft was apparently machined for alignment. It appears to have been welded conventionally as there is not penetration into the center of the shaft. Seems to me the weld would be 100% with friction welding and there would be no need to machine the...
  2. leafsprung

    Automotive Failure Analysis

    The bending load would be applied as the gear on this shaft drives the intermediate or idler gear. However, the shaft is supported at both ends. Here is another picture of the shaft. I have not yet received the shaft back but this picture may give someone more knowledgeable than myself some...
  3. leafsprung

    Automotive Failure Analysis

    ad101- I dont have the shaft back yet. Im hoping to get it back and have it examined. It was in a customers vehicle, I think it lasted 2000 miles or thereabouts. No real hard use. Obviously they were not happy and of course neither am I. From what I can tell it failed at the weld itself...
  4. leafsprung

    Automotive Failure Analysis

    Hello all. I have been making custom transmission mainshafts for an adaptor I have been having them inertia welded. Recently one of the shafts failed. Obviously Im looking to prevent this from happening in the future and would welcome any analysis on the mode of failure as well as steps I...

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