Abstract
A technique for determining thermophysical properties is proposed and applied to a sample of concrete by taking advantage of pseudo-random signals. Data are treated in the frequency domain. A new approach is developed for estimating the thermal impedance based on the formalism of non-integer order models. An experimental setup consisting of a heat flux and temperature sensor arranged in contact with a material assuming a semi-infinite boundary condition is studied. The theoretical expression for such a thermal impedance takes into account the thermal capacity of the sensor and the contact resistance and emphasizes fractional orders in the behavior model.
Original language | English |
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Pages (from-to) | 1025-1039 |
Number of pages | 15 |
Journal | International Journal of Thermophysics |
Volume | 30 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2009 Jun |
Keywords
- Concrete
- Contact resistance
- Frequency domain
- Non-integer order models
- Thermal impedance
- Thermophysical parameters
ASJC Scopus subject areas
- Condensed Matter Physics