Influencia de la posición radial sobre las deformaciones de la madera aserrada de Pinus caribaea Morelet var. caribaea
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Abstract
The knowledge of the behaviour of these timber deformations is of great importance because it allows establishing procedures that contribute to minimize them in the technological process of the wood sawn. The present work is the result of an experimental study about the deformation (twist) of sawn wood of the Pinus caribaea Morelet var. caribaea in the radial direction. Pieces of different linear dimensions, boards (13 x 100 x 3000 mm) and planks (75 x 100 x 3000 mm) which were exposed to a natural drying process during 90 days, were observed that the deformation (twist angle) is larger for those pieces close to the core, exhibing monotonic increased defects when it is taked samples from the crust to the core, inverse to the positive radial direction, being this effect larger the smaller is the cross section of the pieces for each studied position (larger in boards than in planks).
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References
Echenique; Robles: Ciencia y tecnología de la madera I, Universidad Veracruzana, México, 1998, p 137.
Egas, A. F. : «Consideraciones para incrementar la eficiencia de los aserraderos de la provincial de Pinar del Río». Tesis para optar por el grado de Doctor en Ciencias Forestales, Universidad de Pinar del Río, Cuba, 1998.
Fernández-Golfín, J. I.: Manual de secado de madera. Ed. Palermo, España, 1998, p. 168.
Johansson, M.; R. Kliger: «Influence of Material Characteristic Son Warp of Norway Spruce Timber», Wood Fiber Science, 2002.
Kliger, R.; M. Johansson; M. Perstorper; G. Johansson: «Distortion of Norway Spruce Timber», Holz als Werkstoff (61): 241-250, 2003.
Mats, E.: Twist of Wood Studies: Dependence on Spiral Grain Gradient, University of Technology, Skeria, Suecia, 2004, p.23.
Ormarsson, S.: «Numerical Analysis of MoistureRelated Distortion in Sawn Timber Chalmers», University of Technology, Canadá, 1999.
Ormarsson, S.; O. Dahlblom; H. Petersson: «A Numerical Study of the Shape Stability of Sawn Timber Subjected to Moisture Variation», Wood Science and Technology (34):207-219, 2000.
Pang, S.: «Anisotropic Shrinkage Prediction of Softwood», Wood Science and Technology (36):75-91, 2002.
Perstorper, M.; M. Johansson; R. Kliger; G. Johansson: «Distortion of Norway Spruce Timber. Part 1. Variation of Relevant Wood Properties», Holz als Werkstoff 59 (1-2):94-103, 2001.