DINTOR - Fundamentals for the Realization and Measurement of Dynamic Torque (Dynamic properties of structural elements for application in dynamic torque standards at primary level)
Engineering Design, Machine Elements, Product Development
Final Report Abstract
The calibration methodology proposed is based on the generation of a reference torque value by measuring the angular acceleration applied to a rotating inertial body attached. There is the controlled speed step profile which will generate the acceleration impulse ramps. The different combinations of acceleration and mass moment of inertia (MMI) values generate a range of reference torque curves. The use of current research results in dynamic force measurement and weighing especially the experimental and numerical analysis of dynamic properties of components could lead to deeper understanding and enhanced 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 incorporate unwanted disturbing influences like temperature and humidity. Our joint project aimed to 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 build one demonstrator set-up at Brasilian side and one demonstrator at German side. Besides the metrological importance this field has a great impact on many industrial applications like automotive, green energy and machine construction. The aim of the German side proposal was 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. Furthermore a pneumatic test stand was build and first experimental results are availiable.
Publications
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A new approach to test torque transducers under dynamic reference regimes, Measurement 58 (2014) 354–362
Rafael S. Oliveira; Simon Winter; Herman A. Lepikson; Thomas Fröhlich; René Theska
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Characterization of the elasto-kinematic behavior of generalized cross-spring bearings, 58th Ilmenau Scientific Colloquium, September 2014
Luis Antonio Gonçalves; Antonio Carlos Peixoto Bitencourt; René Theska; Herman Augusto Lepikson
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Estimativa do torque inercial em eixos girantes - uma abordagem metrológica ao processamento de sinais, Congress: 3rd International Congress on Mechanical Metrology (III CIMMEC), October 2014, Gramado, Brazil
Rafael Oliveira; Rafael Claudino; Leonardo Gusmão; Ricardo Kalid; Herman Lepikson; Thomas Fröhlich
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New proposals for the dynamic tests of torque transducers. 58th Ilmenau Scientific Colloquium, September 2014
Rafael S. Oliveira; Simon Winter; Herman A. Lepikson; Thomas Fröhlich; René Theska; Antonio C. P. Bitencourt; Renato R. Machado
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A new proposal for the dynamic test of torque transducers IMEKO 2015, Praha
Rafael S. Oliveira; Thomas Fröhlich (Ilmenau); Herman A. Lepikson; René Theska; Wagner A. Duboc
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Estimate of the inertial torque in rotating shafts - a metrological approach to signal processing, Journal of Physics: Conference Series 648 (2015) 012019
Rafael Oliveira; Rafael Claudino; Leonardo Gusmão; Ricardo Kalid; Herman Lepikson; Thomas Fröhlich
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Uncertainty of measurement for the inertial torque estimation in angular acceleration ramps of rotating shafts. Congress: Euspen’s 15th International Conference & Exhibition, June 2015, Leuven, Belgium
Rafael S. Oliveira; Thomas Fröhlich; Herman A. Lepikson; Simon Winter; René Theska
