Local measurement of thermal conductivity and diffusivity
Abstract
Simultaneous measurement of local thermal diffusivity and conductivity is demonstrated on a range of ceramic samples. This was accomplished by measuring the temperature field spatial profile of samples excited by an amplitude modulated continuous wave laser beam. A thin gold film is applied to the samples to ensure strong optical absorption and to establish a second boundary condition that introduces an expression containing the substrate thermal conductivity. The diffusivity and conductivity are obtained by comparing the measured phase profile of the temperature field to a continuum based model. A sensitivity analysis is used to identify the optimal film thickness for extracting the both substrate conductivity and diffusivity. Proof of principle studies were conducted on a range of samples having thermal properties that are representative of current and advanced accident tolerant nuclear fuels. It is shown that by including the Kapitza resistance as an additional fitting parameter, the measured conductivity and diffusivity of all the samples considered agree closely with literature values. Lastly, a distinguishing feature of this technique is that it does not require a priori knowledge of the optical spot size which greatly increases measurement reliability and reproducibility.
- Authors:
-
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- The Ohio State Univ., Columbus, OH (United States). Mechanical and Aerospace Engineering Dept.
- Idaho State Univ., Pocatello, ID (United States). Nuclear Science and Engineering
- Publication Date:
- Research Org.:
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Sponsoring Org.:
- USDOE Office of Nuclear Energy (NE)
- OSTI Identifier:
- 1255158
- Report Number(s):
- INL/JOU-14-34779
Journal ID: ISSN 0034-6748; RSINAK
- Grant/Contract Number:
- AC07-05ID14517
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Review of Scientific Instruments
- Additional Journal Information:
- Journal Volume: 86; Journal Issue: 12; Journal ID: ISSN 0034-6748
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; thermal conductivity; metallic thin films; dispersion relations; gold; laser materials
Citation Formats
Hurley, David H., Schley, Robert S., Khafizov, Marat, and Wendt, Brycen L. Local measurement of thermal conductivity and diffusivity. United States: N. p., 2015.
Web. doi:10.1063/1.4936213.
Hurley, David H., Schley, Robert S., Khafizov, Marat, & Wendt, Brycen L. Local measurement of thermal conductivity and diffusivity. United States. https://doi.org/10.1063/1.4936213
Hurley, David H., Schley, Robert S., Khafizov, Marat, and Wendt, Brycen L. 2015.
"Local measurement of thermal conductivity and diffusivity". United States. https://doi.org/10.1063/1.4936213. https://www.osti.gov/servlets/purl/1255158.
@article{osti_1255158,
title = {Local measurement of thermal conductivity and diffusivity},
author = {Hurley, David H. and Schley, Robert S. and Khafizov, Marat and Wendt, Brycen L.},
abstractNote = {Simultaneous measurement of local thermal diffusivity and conductivity is demonstrated on a range of ceramic samples. This was accomplished by measuring the temperature field spatial profile of samples excited by an amplitude modulated continuous wave laser beam. A thin gold film is applied to the samples to ensure strong optical absorption and to establish a second boundary condition that introduces an expression containing the substrate thermal conductivity. The diffusivity and conductivity are obtained by comparing the measured phase profile of the temperature field to a continuum based model. A sensitivity analysis is used to identify the optimal film thickness for extracting the both substrate conductivity and diffusivity. Proof of principle studies were conducted on a range of samples having thermal properties that are representative of current and advanced accident tolerant nuclear fuels. It is shown that by including the Kapitza resistance as an additional fitting parameter, the measured conductivity and diffusivity of all the samples considered agree closely with literature values. Lastly, a distinguishing feature of this technique is that it does not require a priori knowledge of the optical spot size which greatly increases measurement reliability and reproducibility.},
doi = {10.1063/1.4936213},
url = {https://www.osti.gov/biblio/1255158},
journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 12,
volume = 86,
place = {United States},
year = {Tue Dec 01 00:00:00 EST 2015},
month = {Tue Dec 01 00:00:00 EST 2015}
}
Web of Science
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Works referencing / citing this record:
Fluorescent scanning thermal microscope based on a Blu-ray optical head to measure thermal diffusivity of radioactive samples
journal, February 2019
- Hayden, Samuel; Munro, Troy
- Review of Scientific Instruments, Vol. 90, Issue 2
Simultaneous characterization of cross- and in-plane thermal transport in insulator patterned by directionally aligned nano-channels
journal, January 2020
- Chauhan, Vinay S.; Abdullaev, Azat; Utegulov, Zhandos
- AIP Advances, Vol. 10, Issue 1
Impact of irradiation induced dislocation loops on thermal conductivity in ceramics
journal, June 2019
- Khafizov, Marat; Pakarinen, Janne; He, Lingfeng
- Journal of the American Ceramic Society, Vol. 102, Issue 12