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 language | English |
|---|---|
| Pages (from-to) | 207-214 |
| Number of pages | 8 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 1933 |
| DOIs | |
| Publication status | Published - 6 Apr 1993 |
| Event | Thermosense XV: An International Conference on Thermal Sensing and Imaging Diagnostic Applications 1993 - Orlando, United States Duration: 11 Apr 1993 → 16 Apr 1993 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering