Assessment of Timber Drying Schedules by Evaluation of Damage Risks

Autor:	J.P. Nadeau, C. Sales, J.R. Puiggali
Rok vydání:	1993
Předmět:	Moisture Rheology Kiln General Chemical Engineering Forensic engineering Environmental science Geotechnical engineering Stage (hydrology) Limit (mathematics) Physical and Theoretical Chemistry Wood drying Constant (mathematics) Water content
Zdroj:	Drying Technology. 11:507-524
ISSN:	1532-2300 0737-3937
DOI:	10.1080/07373939308916841
Popis:	The macroscopic description of drying kinetics and the estimation of the corresponding moisture profiles are coupled by a simple diffusion model. This model describes correctly the drying of a board in a kiln, using a constant mass-transfer coffeicient associated with the drying stage under consideration. Calculations of both the profiles of moisture gradients and time evolution of these gradients, have been made. These data are inputs for a simple rheological model that is used to define a criteriom for the “limit of damage” which is based on the risk of the appearance of shakes. With this model it is possible to validate new or currently-used stepped drying schedules, bases on moisture content rather than time, by simulating the mechanical response of the wood piece during the drying, and comparing this with the criterion for the limit of damage.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::216b4d0ce4e4ecb0a02b077b8ad44a80 https://doi.org/10.1080/07373939308916841 Zobrazit plný text záznamu