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Several international comparisons of primary force standard machines showed that the measured axial force value may be affected by an uncertainty often higher by one order of magnitude than the uncertainty expected on the basis of the relative uncertainties of the values of mass, of the acceleration due to gravity, and of buoyancy. The main cause of such discrepancy is to be found in the parasitic effects (transverse forces and moments) which are always present side by side with the axial force in the different standards. In order to investigate the parasitic components, which could cause rotation effects and overlapping, a six-component dynamometer was developed by IMGC, and a four-component one by ONERA. The report describes the design principles and the main elements of the 6-component 500 kN axial load dynamometer designed and constructed by IMGC.

Additional information

Authors: FERRERO C, Istituto di Metrologia "G. Colonnetti", Torino (IT);QING ZHONG L, Istituto di Metrologia "G. Colonnetti", Torino (IT);MARINARI C, Istituto di Metrologia "G. Colonnetti", Torino (IT);MARTINO E, Istituto di Metrologia "G. Colonnetti", Torino (IT)
Bibliographic Reference: EUR 14839 EN (1992)
Availability: (2)
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