Model study to compare drying rate through laser incisions in beech wood
Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
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2019. 69-78 Papur a gyflwynwyd yn Timber 2019, London, Y Deyrnas Unedig.
Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
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T1 - Model study to compare drying rate through laser incisions in beech wood
AU - Spear, Morwenna
AU - Pitman, Andy
AU - Nath, Subhasisa
AU - Miles, Christopher
AU - Waugh, David
AU - Mason, Paul
AU - Ormondroyd, Graham
PY - 2019/7/3
Y1 - 2019/7/3
N2 - Laser incising presents several opportunities to the timber preservation and timber modification sectors. These include (1) increasing the permeability of species with moderate or poor permeability; (2) incising without introducing mechanical damage to adjacent tissue; and (3) greater control of the depth of the treated zone in envelope treatments. In addition, where drying is required prior to use, it is proposed that the incisions may speed up the rate of moisture movement from the core of the wood. This preliminary study assessed the drying rate of samples of beech timber which had been incised using a CO2 laser. Weight loss over time is related to the combined action of bulk flow, diffusion in the cell lumena, diffusion through the cell wall substance, and evaporation mechanisms at the timber surface. These are discussed in the light of classical drying theory for hardwoods, to examine suitability for the industrial context.
AB - Laser incising presents several opportunities to the timber preservation and timber modification sectors. These include (1) increasing the permeability of species with moderate or poor permeability; (2) incising without introducing mechanical damage to adjacent tissue; and (3) greater control of the depth of the treated zone in envelope treatments. In addition, where drying is required prior to use, it is proposed that the incisions may speed up the rate of moisture movement from the core of the wood. This preliminary study assessed the drying rate of samples of beech timber which had been incised using a CO2 laser. Weight loss over time is related to the combined action of bulk flow, diffusion in the cell lumena, diffusion through the cell wall substance, and evaporation mechanisms at the timber surface. These are discussed in the light of classical drying theory for hardwoods, to examine suitability for the industrial context.
M3 - Paper
SP - 69
EP - 78
T2 - Timber 2019
Y2 - 3 July 2019 through 4 July 2019
ER -