Active thermal testing of moisture in bricks

P. G. Bison, C. Bressan, E. Grinzato, S. Marinetti, V. Vavilov

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

Measurement by active thermal testing of effusivity on porous moistened material is analyzed. Moistened bricks snow that thermal properties of this porous solid depend on water content. Various solutions of the heat transfer problem are taken into account and approximations introduced to simplify the data reduction are discussed. Error analysis is also considered to justify the adoption of relative technique. Errors analysis speaks strongly in favour of reference method which allows to avoid the measurement of incident energy and optical properties of a specimen. This procedure allows to introduce a rather simple expression to extract moisture values from one-side thermal test. Diffusivity measurement trough flash method is proposed to determine the influence of moisture on the variation of thermal conductivity.

Original languageEnglish
Pages (from-to)207-214
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume1933
DOIs
Publication statusPublished - 6 Apr 1993
EventThermosense XV: An International Conference on Thermal Sensing and Imaging Diagnostic Applications 1993 - Orlando, United States
Duration: 11 Apr 199316 Apr 1993

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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