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- Title
AVALIAÇÃO DA COR DOS LENHOS JUVENIL E ADULTO DE CEDRO POR MEIO DO MÉTODO CIEL*a*b*.
- Authors
de Avila Delucis, Rafael; Cenci Taborda, Vinicius; Weinert Correa, Leonardo; de Avila Veja, Roger; Gatto, Darci Alberto
- Abstract
The present study aimed to characterize the radial profile of cedar wood (Cedrela fissilis) by the colorimetric technique. Three different trees of approximately 100 years old were selected in Canguçu, Rio Grande do Sul. From each felled tree, discs were removed at breast height (1,3 m) with a thickness of 20 cm and subsequently samples were segmented in centimeter lengths from pith to bark. The samples were conditioned at equilibrium moisture content of 12%, to carry out the colour evaluation with a portable colorimeter Konica Minolta brand in accordance with the CIEL*a*b* method. To determine the segregation of juvenile and mature woods position was employed the apparent specific gravity to 12% (ρa12%) as a parameter. With colorimetric analysis, it was found that the lightness, the green-red coordinate and hue angle presented intimate relation with the transition from juvenile and adult logs. Has a result of blue-yellow coordinate and chromaticity showed approximately a linear trend in pith-bark direction.
- Publication
Tecnologia em Metalurgia, Materiais e Mineração, 2014, Vol 11, Issue 3, p251
- ISSN
2176-1515
- Publication type
Article
- DOI
10.4322/tmm.2014.037