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Investigation of oscillating climates for wood drying using the flying wood test and loaded beams: need for a new mechano-sorptive model

Abstract : 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.
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Submitted on : Wednesday, December 9, 2015 - 3:31:55 PM
Last modification on : Wednesday, September 30, 2020 - 7:00:09 PM

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Romain Remond, Mariella de la Cruz, Daniel Aléon, Patrick Perre. Investigation of oscillating climates for wood drying using the flying wood test and loaded beams: need for a new mechano-sorptive model. MADERAS: Ciencia y Tecnología, Universidad del Bío-Bío, 2013, 15 (3), ⟨10.4067/S0718-221X2013005000021⟩. ⟨hal-01240807⟩

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