Noise-resistant two-wavelength interferometry for single-shot measurement of high-gradient flows

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F23%3A00576506" target="_blank" >RIV/61388998:_____/23:00576506 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/46747885:24220/23:00010953

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0143816623000349?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0143816623000349?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.optlaseng.2023.107505" target="_blank" >10.1016/j.optlaseng.2023.107505</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Noise-resistant two-wavelength interferometry for single-shot measurement of high-gradient flows

Popis výsledku v původním jazyce

This paper presents a new robust approach to measuring dynamic phenomena with high gradients using two-wavelength high-speed interferometry. A multiplexed interferogram with two different wavelengths and spatial-carrier frequencies is captured by a single high-speed camera shot. Quantitative processing of the interferogram is based on Fourier analysis, which is followed by a robust procedure to retrieve the unwrapped phase map with single-wavelength accuracy but with an extended range of unambiguity. This method is significantly more noise-resistant than the standard two-wavelength technique, which is sensitive to noise and synthetic phase distortion. The method was successfully applied to studying shock waves in a transonic compressor blade cascade in an industrial aerodynamic laboratory, where single-wavelength and standard two-wavelength approaches fail.

Název v anglickém jazyce

Noise-resistant two-wavelength interferometry for single-shot measurement of high-gradient flows

Popis výsledku anglicky

This paper presents a new robust approach to measuring dynamic phenomena with high gradients using two-wavelength high-speed interferometry. A multiplexed interferogram with two different wavelengths and spatial-carrier frequencies is captured by a single high-speed camera shot. Quantitative processing of the interferogram is based on Fourier analysis, which is followed by a robust procedure to retrieve the unwrapped phase map with single-wavelength accuracy but with an extended range of unambiguity. This method is significantly more noise-resistant than the standard two-wavelength technique, which is sensitive to noise and synthetic phase distortion. The method was successfully applied to studying shock waves in a transonic compressor blade cascade in an industrial aerodynamic laboratory, where single-wavelength and standard two-wavelength approaches fail.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20302 - Applied mechanics

Projekt

<a href="/cs/project/LTAUSA19036" target="_blank" >LTAUSA19036: Pokročilý experimentální výzkum synchronního a nesynchronního kmitání lopatek</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Optics and Lasers in Engineering

ISSN

0143-8166

e-ISSN

1873-0302

Svazek periodika

164

Číslo periodika v rámci svazku

May

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

107505

Kód UT WoS článku

000943546600001

EID výsledku v databázi Scopus

2-s2.0-85147543596