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Primary reference methodology (method) of measurements the surface deformation of an elastically deformed beam
https://doi.org/10.32446/0368-1025it.2022-2-34-43
Abstract
The problem of non-traceability of the measurement results of relative strain to the state measurement standards of units of magnitudes is considered. The peculiarities of strain measurements are revealed: the dependence of measurement results on measurement conditions. The measurement method and equipment for the implementation of the state primary reference methodology (method) of measurements the surface deformation of an elastically deformed rectangular constant section beam loaded according to the pure bending scheme are described. The procedure for establishing methodological parameters (changes in ambient temperature during measurement, initial flatness of the beam, non-parallelism of the beam faces, etc.) during the development of the state primary reference methodology (method) of measurements is outlined. An algorithm for estimation of measurement uncertainty of strain with indication of the identifi ed sources of uncertainty and their contribution to the total uncertainty of the measurement results is described. The metrological characteristics of the measurement methodology (method) are calculated. This technique will be useful in determining the characteristics of reference and working measurement techniques for the surface strain of an elastically deformed beam of constant rectangular cross-section loaded according to the pure bending scheme.
About the Authors
L. A. Tribushevskaya
UNIIM – Affiliated Branch of the D. I. Mendeleev Institute for Metrology
Russian Federation
Russian Federation
Lidiya A. Tribushevskaya
Ekaterinburg
Y. R. Shimolin
UNIIM – Affiliated Branch of the D. I. Mendeleev Institute for Metrology
Russian Federation
Russian Federation
Yuriy R. Shimolin
Ekaterinburg
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Review
For citations:
Tribushevskaya L.A., Shimolin Y.R. Primary reference methodology (method) of measurements the surface deformation of an elastically deformed beam. Izmeritel`naya Tekhnika. 2022;(2):34-43. (In Russ.) https://doi.org/10.32446/0368-1025it.2022-2-34-43
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