Technical Physics Letters

, Volume 45, Issue 10, pp 967–969 | Cite as

Use of Direct Optical Heterodyning for Measuring Hardness by the Leeb Method

  • T. V. Kazieva
  • K. L. Gubskii
  • A. P. Kuznetsov
  • R. D. GlukhovEmail author


In this paper, we describe a portable system for measuring the indenter velocity in hardness meters implemented according to the Leeb method. The developed system is a fiber interferometer, in which a radiation source is a semiconductor laser with a wavelength of 1550 nm. The presented experimental results confirm the ability of the system to measure indenter velocities with an uncertainty of 0.001 m/s, which satisfies the requirements of the standards for this method of measuring hardness.


fiber interferometer PDV hardness measurement Leeb method. 



This work was supported by the Russian Science Foundation, project no. 17-72-20164.


The authors declare that they have no conflict of interest.


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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • T. V. Kazieva
    • 1
  • K. L. Gubskii
    • 1
  • A. P. Kuznetsov
    • 1
  • R. D. Glukhov
    • 1
    Email author
  1. 1.National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)MoscowRussia

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