DINTOR - Fundamentals for the Realization and Measurement of Dynamic Torque (Dynamic properties of structural elements for application in dynamic torque standards at primary level)

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Using of actual research results of dynamic force measurement and weighing especially the experimental and numerical analysis of dynamic properties of components could allow deeper understanding, improving and uncertainty analysis. The detailed uncertainty analysis of components and complete system requires combined static and dynamic models of the complex system of the whole torque primary standard unit and also need to integrate unwanted disturbing influences like temperature and humidity. Selecting the appropriate type of model and verifying the numerical models of dynamic properties of the load cell, couplings and levers with experimental data is essentially to proof traceability. The results of small force and torque are very promising but need to be extended in range and speed which is not possible by just scaling up but requires new designs and ideas. Our joint project aims to further develop primary dynamic torque standards in the range of 50 to 100 Nm with frequencies up to 50 Hz that are traceable to static fundamental torque standards and to one demonstrator set-up. Besides the metrological importance this field has a great impact on many industrial applications like automotive, green energy and construction. The aim of the German side proposal is to support the set-up of the new primary dynamic torque standard demonstrator by research on combined static and dynamic models of the complex system that are currently not available but necessary the construction, understanding and improvement of the set-up.