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Determination of precision conditions for measuring relative values in mechanical tests of various materials
https://doi.org/10.32446/0368-1025it.2021-5-9-17
Abstract
The problem of insufficient detail of the requirements for the developed and certified measurement methods used in mechanical testing of various materials is considered. The compatibility of the requirements of metrological support for the results of quantitative chemical analysis and indirect results of mechanical tests for the wear resistance of materials when rubbing against a fixed abrasive is relevant. To ensure the accuracy of measurements, it is proposed to use the grain size of the abrasive material and the rotation speed of the abrasive disk as variable factors. In order to establish the requirements for the metrological characteristics of materials during mechanical tests, in particular, when determining the relative wear resistance, the conditions for precision measurements are justified. The results of a multi – stage experiment-testing of materials for wear resistance with the use of various research and consumables, measuring instruments and testing equipment-are presented. The conditions for the organization of the experiment in the case of determining other relative mechanical characteristics of the materials under study for establishing precision indicators in the development of methods of mechanical tests for abrasive wear are proposed and justified. The application of the obtained results will allow developers of mechanical testing methods to establish metrological characteristics of materials in compliance with all the requirements of the State System for Ensuring the Uniformity of Measurements of the Russian Federation.
About the Authors
S. Y. Lohanina
Udmurt State University
Russian Federation
Russian Federation
Svetlana Yu. Lohanina
Izhevsk
O. V. Baranova
Udmurt State University
Russian Federation
Russian Federation
Olga V. Baranova
Izhevsk
L. V. Trubacheva
Udmurt State University
Russian Federation
Russian Federation
Larisa V. Trubacheva
Izhevsk
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Review
For citations:
Lohanina S.Y., Baranova O.V., Trubacheva L.V. Determination of precision conditions for measuring relative values in mechanical tests of various materials. Izmeritel`naya Tekhnika. 2021;(5):9-17. (In Russ.) https://doi.org/10.32446/0368-1025it.2021-5-9-17
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