Measuring moisture content profiles in a board during drying: a polychromatic X-ray system interfaced with a vacuum/pressure laboratory kiln |
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Authors: | Ricardo Baettig Romain Rémond Patrick Perré |
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Institution: | (1) LERMAB (Joint research unit on wood material)- UMR 1093, INRA/ENGREF/UHP ENGREF (School of Forestry), 14, rue Girardet., 54042 Nancy Cedex, France |
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Abstract: | A standard X-ray source and an energy-sensitive detector were placed on both sides of a wood dryer which operates over a wide
range of drying conditions. The spectrometric X-ray intensities transmitted through the wood sample were related to the mass
concentration of wood and water using a rigorous calculation needed in the case of a polychromatic X-ray beam. The source
and the detector are carried by a motion controller in order to scan the sample at different drying times and determine the
moisture content (MC) profile along the board thickness. Treatment on spectrometric data and the evolution of the MC profiles
in a Norway spruce board (Picea abies) are presented in this work. |
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