Calibration-free thickness and temperature measurement of oil films using broadband near-infrared absorption spectroscopy

被引：1

作者：

Bonarens, Matthias ^{[1
,2
]}

Goet, Gabriele ^{[1
]}

Auernhammer, Ariane ^{[1
]}

Hansemann, Clemens ^{[1
]}

Wagner, Steven ^{[1
]}

Daun, Kyle J. ^{[2
]}

机构：

[1] Tech Univ Darmstadt, Dept Mech Engn React Flows & Diagnost, Otto Berndt Str 3, D-64287 Darmstadt, Germany

[2] Univ Waterloo, Dept Mech & Mechatron Engn, 200 Univ Ave West, Waterloo, ON N2L 3G1, Canada

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 2025年 / 36卷 / 01期

关键词：

liquid film; film thickness; film temperature; absorption spectroscopy; wetting; interfacial flow; multiphase flow; OPTICAL MEASUREMENT; WAVE VELOCITY; LIQUID; FLOW; THIN;

D O I：

10.1088/1361-6501/ad93f1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper assesses broadband absorption spectroscopy for calibration-free, single-ended thickness and temperature measurements of thin liquid films with a free interface using spectrally resolved intensity measurements. The spectroscopic properties of the liquid in question, here an oil lubricant, are characterized using a Fourier transform infrared spectrometer. This data forms the basis for a measurement model that is used to infer the thickness and temperature of films wetting metal surfaces based on broadband spectral transmission measurements. The technique is demonstrated by inferring the properties of static films of known properties as well as free films on a rotating metal disk.

引用

页数：9