Verification of Charpy impact notch profile
Verification of Charpy impact notch profile
(OP)
We break charpy "v" notch impact specimens. As part of the verification we check the notch profile on an optical comparator using an overlay that shows the allowable tolerance. The overlay is a gauge and therefore must be calibrated in some way, but I do not know how to have it done. Does anyone know where I can find a manufacturer that would make something like this or a way to calibrate it.
We have gotten go no-go gauges but these only check the notch depth and not the profile of the notch.
Bob
We have gotten go no-go gauges but these only check the notch depth and not the profile of the notch.
Bob





RE: Verification of Charpy impact notch profile
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RE: Verification of Charpy impact notch profile
rp
RE: Verification of Charpy impact notch profile
We used to keep around a few NIST reference Charpy bars (the nice ground notch ones) to use as a quick verification that all was correct. After all you should have some around anyway. This was our operator check.
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Plymouth Tube
RE: Verification of Charpy impact notch profile
Bob