Investigation of oscillating climates for wood drying using the flying wood test and loaded beams: need for a new mechano-sorptive model
Título del documento: Investigation of oscillating climates for wood drying using the flying wood test and loaded beams: need for a new mechano-sorptive model
Revue: Maderas : ciencia y tecnología
Base de datos:
Número de sistema: 000541324
ISSN: 0718-221X
Autores: 1
2
2
3
Instituciones: 1Université de Lorraine, ENSTIB, Epinal. Francia
2Institut Technologique FCBA, Paris. Francia
3Ecole Centrale Paris, LGPM, Malabry. Francia
Año:
Periodo: Oct
Volumen: 15
Número: 3
Paginación: 269-280
País: Chile
Idioma: Inglés
Resumen en inglés In this work, the effects of moisture content variations produced by oscillating drying conditions have been studied by means of non-symmetrical drying (flying wood) and loaded drying (3-point bending test). The oscillating conditions are intended to produce a mechano-sorptive creep that is able to reduce drying stresses. However, our experimental data seem to prove that the activation of the mechano-sorptive creep by oscillations of the moisture content is very limited. Besides, the simulations showed that noisy conditions due to the kiln regulation already activate the mechano-sorptive creep, even for non-oscillating conditions, and could confuse the results. Contrary to the experimental observations, the implementation of classical mechano-sorptive models in the drying simulation model is far too optimistic, which means that these models are not suitable when the material is submitted to numerous oscillations.
Keyword: Drying stress,
Beech,
Oscillating conditions,
Mechano-sorptive model,
Flying wood
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