Experimental Study on the Measuring Temperature Field by Real-Time Digital Holography

DOI

10.2991/eeeis-17.2017.50How to use a DOI?

Keywords

measuring temperature field ;digital holographic; interferometry; Fourier transform

Abstract

An experimental method and reconstruction arithmetic of temperature field are proposed. The fast Fourier transform followed by a digital low-pass filter and the inverse Fourier transform were applied to interference fringes for removing speckle noise, so that airflow field phase information is in high-contrast and low noise. Phase was unwrapped to calculate phase difference. The temperature distribution was obtained by the relation between phase and refractive index. The results are consist with the values measured by thermocouple. It is shown that the digital holographic interferometry is an effective method for measuring temperature field,so that the measuring precision can be greatly improved.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zhan-Rong ZHOU
AU  - Xiao-Fang SHEN
AU  - Ai-Jun LI
PY  - 2017/09
DA  - 2017/09
TI  - Experimental Study on the Measuring Temperature Field by Real-Time Digital Holography
BT  - Proceedings of the 3rd Annual International Conference on Electronics, Electrical Engineering and Information Science (EEEIS 2017)
PB  - Atlantis Press
SP  - 360
EP  - 364
SN  - 2352-5401
UR  - https://doi.org/10.2991/eeeis-17.2017.50
DO  - 10.2991/eeeis-17.2017.50
ID  - ZHOU2017/09
ER  -