This article is cited in 1 paper

Use of direct optical heterodyning for measuring hardness by the Leeb method

T. V. Kazieva, K. L. Gubskiy, A. P. Kuznetsov, R. D. Glukhov

National Engineering Physics Institute "MEPhI", Moscow

Abstract: 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.

Keywords: fiber interferometer, PDV, hardness measurement, Leeb method.

Received: 10.06.2019
Revised: 10.06.2019
Accepted: 17.06.2019

DOI: 10.21883/PJTF.2019.19.48309.17918

 English version: Technical Physics Letters, 2019, 45:10, 967–969

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