Correlation Measurements of Thermal Acoustic Radiation Using a Sensor Array

An array consisting of three sensors was used for correlation measurements of thermal acoustic radiation. For the first time, all cross-correlation functions were obtained for each pair of sensors. The measurements were carried out at two positions of the source (a heated narrow Teflon cylinder), th...

Full description

Saved in:
Bibliographic Details
Published in:Acoustical physics 2024-02, Vol.70 (1), p.21-28
Main Authors: Anosov, A. A., Granovsky, N. V., Belyaev, R. V., Erofeev, A. V., Sanin, A. G., Mansfeld, A. D.
Format: Article
Language:English
Subjects:
Acoustic measurement
Acoustics
Cross correlation
Physical Acoustics
Physics
Physics and Astronomy
Polytetrafluoroethylene
Sensor arrays
Sensors
Sound waves
Spatial resolution
Temperature distribution
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An array consisting of three sensors was used for correlation measurements of thermal acoustic radiation. For the first time, all cross-correlation functions were obtained for each pair of sensors. The measurements were carried out at two positions of the source (a heated narrow Teflon cylinder), the distance between which was equal to half the spatial period of the cross-correlation function of adjacent sensors. The measured correlation functions were in antiphase, which corresponds to the calculated correlation functions of thermal acoustic radiation. To pass from correlation functions to temperature distribution, spatial cross-correlation functions for adjacent and the outermost sensors in the array are summed. The correlation methodology makes it possible to significantly increase the spatial resolution of the method.
ISSN:1063-7710
1562-6865
DOI:10.1134/S1063771023601425