Finite pulse-time and heat-loss effects in pulse thermal diffusivity measurements
Abstract
The heat transfer problem associated with pulse thermal diffusivity measurements is analyzed for the cases of (i) triangular pulses whose widths are comparable with the transit time of temperature fronts across a sample (finite pulse width effects), (ii) heat losses from sample faces, and (iii) the simultaneous occurrence of heat losses and finite pulse-width effects. Methods for the analysis of experimental results which are affected by these conditions are discussed. Tabular and graphical data which facilitate the analysis are given.
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To minimize error in the half-time method, the measurement time scale t_measure must be sufficiently shorter than the relaxation time τ (τ ≫ t_measure).
“To minimize the error in the half-time method, the time scale of the measurement, t measure is required to be sufficiently shorter than τ, typically τ » t measure .”
From Simultaneous measurement of specific heat and thermal conductivity in pulsed magnetic fields (2023) · cites this paper as [33]
When heat exchange is not negligible, ∆T decays proportionally to exp(t/τ) after showing a temperature peak.
“When the heat exchange is not negligible, ∆T decays proportionally to exp(t/τ) after showing a temperature peak.”
From Simultaneous measurement of specific heat and thermal conductivity in pulsed magnetic fields (2023) · cites this paper as [33]
Cites
Flash Method of Determining Thermal Diffusivity, Heat Capacity, and Thermal Conductivity
Parker, W. J., Jenkins, R. J., Butler, C. P., & Abbott, G. L. (1961) · Journal of Applied Physics · doi:10.1063/1.1728417 · Cited by 3,978 · see citing works
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Thermal Transport and Thermal Diffusivity by Laser Flash Technique: A Review
Sundar, R., & Sudha, C. (2025) · International Journal of Thermophysics · doi:10.1007/s10765-024-03479-0 · Cited by 43 · see citing works
Simultaneous measurement of specific heat and thermal conductivity in pulsed magnetic fields
Nomoto, T., Zhong, C., Kageyama, H., Suzuki, Y., Jaime, M., Hashimoto, Y., Katsumoto, S., Matsuyama, N., Dong, C., Matsuo, A., et al. (2023) · arXiv · doi:10.48550/arxiv.2302.01627 · Cited by 5 · see citing works
- Authors
- Heckman, R. C.
- Affiliations
- Sandia National Laboratories (US)
- Corresponding author
- Heckman, R. C.
- Venue
- Journal of Applied Physics
- Publisher
- AIP Publishing
- Published
- 1973-04-01
- Volume
- 44
- Issue
- 4
- Pages
- 1455-1460
- ISSN
- 0021-8979 (ISSN-L)
- 1089-7550
- OpenAlex
- W2000023249
- Cited by
- 165
- References
- 1
- Citations by year
- 2026: 3 · 2025: 2 · 2024: 3 · 2023: 2 · 2022: 1 · 2021: 2 · 2020: 3 · 2019: 9 · 2018: 4 · 2016: 3 · 2015: 3 · 2014: 1 · 2013: 2 · 2012: 1
- FWCI
- 4.80
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Applied Physics (publishedVersion)
- Topics
- Physical Sciences › Engineering › Mechanics of Materials › Thermography and Photoacoustic Techniques
- Physical Sciences › Materials Science › Materials Chemistry › Thermal properties of materials
- Physical Sciences › Engineering › Computational Mechanics › Heat Transfer and Numerical Methods
- Keywords
- triangular pulse, heat transfer analysis
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Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
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