The transient source measurement technique is a nonintrusive, nondestructive method of measuring the thermal properties of a given sample. The transient source technique has been implemented using a wide variety of sensor shapes or configurations. The modern transient plane source (TPS) sensor is a spiral-shaped sensor element which evolved from transient line and transient hot strip (THS) source techniques. Commercially available sensors employ a flat interface that works well when test samples have a smooth, flat surface. The present work provides the basis for a new, cylindrical strip (CS) sensor configuration to be applied to cylindrical surfaces. Specifically, this work uses parameter estimation theory to compare the performance of CS sensor configurations with a variety of existing flat sensor geometries, including TPS and THS. A single-parameter model for identifying thermal conductivity and a two-parameter model for identifying both thermal conductivity as well as volumetric heat capacity are considered. Results indicate that thermal property measurements may be carried out with greater measurement sensitivity using the CS sensor configuration than similar configurations for flat geometries. In addition, this paper shows how the CS sensor may be modified to adjust the characteristic time scale of the experiment, if needed.
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March 2017
Research-Article
Measurement Sensitivity Analysis of the Transient Hot Source Technique Applied to Flat and Cylindrical Samples
Jason Ostanek,
Jason Ostanek
Naval Surface Warfare Center,
Philadelphia Division,
5001 South Broad Street,
Philadelphia, PA 19112
Philadelphia Division,
5001 South Broad Street,
Philadelphia, PA 19112
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Krishna Shah,
Krishna Shah
Mechanical and Aerospace
Engineering Department,
The University of Texas at Arlington,
500 West First Street,
Arlington, TX 76019
Engineering Department,
The University of Texas at Arlington,
500 West First Street,
Arlington, TX 76019
Search for other works by this author on:
Ankur Jain
Ankur Jain
Mechanical and Aerospace
Engineering Department,
The University of Texas at Arlington,
500 West First Street,
Arlington, TX 76019
Engineering Department,
The University of Texas at Arlington,
500 West First Street,
Arlington, TX 76019
Search for other works by this author on:
Jason Ostanek
Naval Surface Warfare Center,
Philadelphia Division,
5001 South Broad Street,
Philadelphia, PA 19112
Philadelphia Division,
5001 South Broad Street,
Philadelphia, PA 19112
Krishna Shah
Mechanical and Aerospace
Engineering Department,
The University of Texas at Arlington,
500 West First Street,
Arlington, TX 76019
Engineering Department,
The University of Texas at Arlington,
500 West First Street,
Arlington, TX 76019
Ankur Jain
Mechanical and Aerospace
Engineering Department,
The University of Texas at Arlington,
500 West First Street,
Arlington, TX 76019
Engineering Department,
The University of Texas at Arlington,
500 West First Street,
Arlington, TX 76019
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS. Manuscript received January 26, 2016; final manuscript received June 15, 2016; published online September 8, 2016. Assoc. Editor: Steve Q. Cai. This work is in part a work of the U.S. Government. ASME disclaims all interest in the U.S. Government's contributions.
J. Thermal Sci. Eng. Appl. Mar 2017, 9(1): 011002 (12 pages)
Published Online: September 8, 2016
Article history
Received:
January 26, 2016
Revised:
June 15, 2016
Citation
Ostanek, J., Shah, K., and Jain, A. (September 8, 2016). "Measurement Sensitivity Analysis of the Transient Hot Source Technique Applied to Flat and Cylindrical Samples." ASME. J. Thermal Sci. Eng. Appl. March 2017; 9(1): 011002. https://doi.org/10.1115/1.4034178
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