Expanded measurement uncertainty concept for the calibration of Charpy pendulum impact machines

With this approach, it is for the first time possible to map all for the direct calibration relevant influences on the impact energy that are to be tested according the standard and to determine complete the respective deviation and measurement uncertainty component. Therefore it is necessary to transfer the tested parameters in influences on the indicated absorbed energy. Based on the numerical example of a presented specific calibration, it has been shown that many influences that have not yet been considered must also be considered, whereas some components can be neglected.