Determination of thermal properties in the frequency domain based on a non-integer model: Application to a sample of concrete

D. Defer, A. Chauchois, E. Antczak, O. Carpentier

Research output: Contribution to journalArticle

3 Citations (Scopus)

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 languageEnglish
Pages (from-to)1025-1039
Number of pages15
JournalInternational Journal of Thermophysics
Volume30
Issue number3
DOIs
Publication statusPublished - 2009 Jun 1

Keywords

  • Concrete
  • Contact resistance
  • Frequency domain
  • Non-integer order models
  • Thermal impedance
  • Thermophysical parameters

ASJC Scopus subject areas

  • Condensed Matter Physics

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