Open AccessПрименение метода прямого оптического гетеродинирования для измерения твердости методом Либа
Author(s) -
Т.В. Казиева,
К.Л. Губский,
А.П. Кузнецов,
Р.Д. Глухов
Publication year - 2019
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2019.19.48309.17918
Subject(s) - laser doppler velocimetry , interferometry , laser , optics , velocimetry , photonics , wavelength , measure (data warehouse) , materials science , acoustics , physics , computer science , medicine , blood flow , database
This paper describes a portable laser interferometry system for measuring the speed of an indenter in Leeb hardness testers. The system is based on Photonic Doppler Velocimetry method. The 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 meets the requirements of the standard.