Development of a Verification Schedule for Deformation Measuring Instruments Used in Uniaxial Tests

The article considers the problem of the lack of traceability of mechanical deformation measurement results to state standards of measurement units and describes a study aimed at developing a verification schedule design. The requirements for metrological characteristics of strain gauges presented in domestic and foreign standards are analyzed. The main methods of standardization of metrological characteristics are defined; their comparative analysis is carried out. The advantages and disadvantages of standardization of metrological characteristics of extensometers defined in ISO 9513 and ASTM E83 are established. A unified approach to the method of expressing permissible error values in units adopted for measuring mechanical deformation is proposed, and the procedure for transferring the unit of deformation to such measuring instruments as extensometers, strain gauges and measuring transducers of deformation is presented. The proposed verification schedule for deformation measuring instruments is important in establishing the metrological traceability of deformation measuring instruments used in uniaxial tests.

The work is focused on issues that need to be taken into account when creating a unified system of metrological support for deformation measurements, in particular, the need to introduce a classification of deformation measuring instruments, methods for standardizing metrological characteristics, and methods for transferring units from standards to deformation measuring instruments.

1. Adamov A. A., Laptev M. Yu., Gorshkova E. G. Analysis of the international and russian federation national technical standards for mechanical tests of polymeric composite materials. Konstrukcii iz kompozicionnyh materialov. 2012;3:72–77. (In Russ.).

2. Mankhirov М. N., Nomoev A. V., Syzrantsev V. V., Ayurova O. Zh. Carbon plastic: technology of production and determination of mechanical characteristics. Buryat state University Vestnik. Chemistry. Physics. 2019;2–3:12–19. (In Russ.). https://doi.org/10.18101/2306-2363-2019-2-3-12-19

3. Zhang X., Zhou R., Guo S., Li Ch., Yue H., Li D. A viscoplastic self-consistent analysis of tensile anisotropy and tension-compression asymmetry in rare-earth magnesium alloy. Journal of Rare Earths. 2024. Available at: https://doi.org/10.1016/j.jre.2024.04.024 [Accessed 30 April 2024].

4. Scherer J.-M., Hure J., Madec R., Le Bourdais Fl., van Brutzel L., Sao-Joao S. et al. Tensile and micro-compression behaviour of AISI 316L austenitic stainless steel single crystals at 20°C and 300°C: Experiments, modelling and simulations. Materials Science and Engineering: A. 2024;900:146471. https://doi.org/10.1016/j.msea.2024.146471

5. Li Q., Jin M., Zou Z., Zhao Sh., Zhang Q., Li P. Experiment research on tensile and compression cyclic loading of sheet metal. Procedia Engineering. 2017;207:1916–1921. https://doi.org/10.1016/j.proeng.2017.10.961

6. Zhao G., Zhang Zh., Zhang Yu., Peng H., Yang Zh., Nagaumi H. et al. Effects of hot compression on the fracture toughness and tensile creep behaviors of a Mg-Gd-Y-Zn-Zr alloy. Materials Science and Engineering: A. 2022;834:142626. https://doi.org/10.1016/j.msea.2022.142626

7. An Yu., Spanjer W., Chezan T., Heijne J. Investigating deformation and work hardening behaviour of stacked sheet metal specimens in compression test: Influence of friction and interfacial shear resistance. Journal of Materials Processing Technology. 2023;321:118145. https://doi.org/10.1016/j.jmatprotec.2023.118145

8. Radchenko S. J., Dorokhov D. O. The new form representation of the measure of linear deformation. Izvestiya Tula State University. 2011;2:446–457. (In Russ.).

9. Rees D. Basic Engineering Plasticity: An Introduction with Engineering and Manufacturing Applications. Oxford: Elsevier Ltd; 2006. 528 p.

10. Beygelzimer Y., Varyukhin V., Orlov D., Synkov S. Twist extrusion – process for deformation accumulation. Doneczk : Firma TEAN; 2003. 87 p. (In Russ.).

11. Danilov M., Bardaev P. Strain measurement method of heterogeneous materials. In: Current issues of continuum mechanics and celestial mechanics – 2019 : The conference proceedings IXth International Youth Scientific Conference, 18–20 November 2019, Tomsk, Russia. Ed. M. Yu. Orlov. Tomsk: Izdatelstvo «Krasnoe znamya»; 2020. 340 p. (In Russ.).

12. Motra H. B., Hildebrand J., Dimmig-Osburg A. Assessment of strain measurement techniques to characterise mechanical properties of structural steel. Engineering Science and Technology, an International Journal. 2014;17(4):260–269. http://dx.doi.org/10.1016/j.jestch.2014.07.006

13. Zhu F., Tao J., Lu R., Bai P., Lei D. Advanced self-compensated, high-accuracy optical extensometer based on field-of-view splitting and dual-reflector imaging techniques. Measurement. 2021;174:109024. https://doi.org/10.1016/j.measurement.2021.109024

14. Pei L., Blöcher G., Wang Y. J., Milsch H., Zimmermann G., Huenges E. et al. The effects of the temperature in the testing system on the measurements of thermal rock strain with clip-on extensometers. Measurement. 2022;188:110375. https://doi.org/10.1016/j.measurement.2021.110375

15. Tretyakova T. V., Tretyakov M. P., Vildeman V. E. Assessment of measurement accuracy using video system for analysis of displacement and deformation fields. Perm State Technical University. Mechanics. 2011;2:92–100. (In Russ.).

16. Kutyaykin V. G., Gorbachev P. A., Geyger Е. Yu., Savrovskiy K. K. Metrological traceability of test results. Competency (Russia). 2020;7:30–36. (In Russ.).

17. Tolmachev V. V., Matveeva I. N. The current state of metrological support for static tension. Measurement Standards. Reference Materials. 2022;18(1):51–67. (In Russ.). https://doi.org/10.20915/2077-1177-2022-18-1-51-67

18. Zhagora N. A., Astafyeva L. E., Makarevich V. B. Metrologicheskaya proslezhivaemost’. Kontrol’ kachestva produkcii. 2016;4:21–28. (In Russ.).

19. Shimolin Yu. R., Tribushevskaya L. A. Modern trends in the development of metrological support of deformation measurements. Legal and applied metrology. 2018;6(157):23–25. (In Russ.).

20. Whelan M., Albrecht D., Hack E., Patterson E. Calibration of a speckle interferometry full-field strain measurement system. Blackwell publishing. 2008;44:180–190. https://publications.jrc.ec.europa.eu/repository/handle/JRC47650

21. Dripke M. Selection of suitable extensometers for testing all materials. Metallurgicheskoe proizvodstvo i texnologiya metallurgicheskix processov. 2009;1:42–47. (In Russ.). https://rudmet.net/media/articles/Article_MPT_01_09_pp.42–47.pdf

22. Artemyev M. I., Titov V. N. Modern equipment for testing materials working under temperature-force loading and in vacuum conditions. In: TestMat: Proceedings of the VI All-Russian conference on testing and research of material properties, 12–13 February 2015, Moscow. Moscow: The national research center «kurchatov institute» federal state unitary enterprise all-russian scientific research institute of aviation materials; 2015. 50 p. (In Russ.).

23. Tabin J. Strain measurement by means of clip-on extensometers during discontinuous plastic flow at 4 K. Cryogenics. 2022;123:103451. https://doi.org/10.1016/j.cryogenics.2022.103451

24. Gangwar V., K Acharyya S., Banerjee A. Calibration of tensile tests in drop-weight impact machine and implementation in simulation of Charpy impact tests. Procedia Structural Integrity. 2024;60:123–135. https://doi.org/10.1016/j.prostr.2024.05.035

25. Chervyakovskaya N. N., Solomakho V. L. Methodology for elaboration of working verifying schemes for measuring tools. Science and technique. 2007;3:29–33. (In Russ.).