Collapse of Eucalyptus nitens Wood After Drying Depending on the Radial Location Within the Stem |
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Authors: | Rubén A Ananías Victor Sepúlveda-Villarroel Natalia Pérez-Peña Laura Leandro-Zuñiga Linette Salvo-Sepúlveda Carlos Salinas-Lira |
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Affiliation: | 1. Departamento de Ingeniería en Maderas , Universidad del Bío Bío , Concepción , Chile;2. Instituto Costarricense de la Madera , San Pedro , San José , Costa Rica;3. Departamento de Ingeniería Mecánica , Universidad del Bío-Bío, Concepción , Chile |
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Abstract: | Collapse is almost certain to occur in the industrial drying of Eucalyptus nitens and, as such this prevents the lumber manufacturing industry in Chile from producing commercial solid wood products from this species. This problem is still unsolved, and different studies to reduce collapse are currently underway. In this exploratory study, shrinkage and collapse after drying of Eucalyptus nitens was measured for boards cut from different radial locations within the stem (core, transition, and outer wood from pith to bark) and having different annual ring orientations (flat-sawn and quarter-sawn). Though exploratory, the results appear to confirm that pieces that were cut from the center of the trees were less susceptible to collapse than pieces cut from the transition zone between the center and the periphery. On average, collapse in transition wood was approximately 50% higher than the collapse observed in wood cut from the central zone of the trees. |
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Keywords: | Collapse Drying Eucalyptus nitens Shrinkage |
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