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Thread: Charpy impact testing angle measurement suggestions

  1. #1 Charpy impact testing angle measurement suggestions 
    New Member
    Join Date
    Jun 2012
    I am designing my own Charpy impact testing machine and I am unsure what would be the best as well as relatively simple and affordable method I can use to accurately measure the angle the pendulum travels after it has broke the sample. I would also appreciate any complex and more expensive ideas too that I can consider, accuracy and reliability are the most important things.

    I have thought of some methods but a lot of them will cause friction against the pendulum which could over complicate the final calculations.

    For anyone that is not familiar with the Charpy method here is a link to a brief description:

    FAQ: What is Charpy Testing?

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  3. #2  
    Join Date
    Apr 2007
    Perhaps you could use the long exposure, or "bulb" setting on a digital camera. This would record the path of the pendulum without interfering with its travel in any way.

    Another idea:

    Last edited by Harold14370; June 1st, 2012 at 05:23 PM.
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  4. #3  
    Forum Ph.D.
    Join Date
    Jan 2009
    what information is gained?
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