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vol.5 número1SECADO ARTIFICIAL DE DOS HÍBRIDOS COMERCIALES DE POPULUS CRECIDOS EN CHILEVARIACIÓN DEL AREA DE PARED CELULAR EN Pinus radiata D. DON índice de autoresíndice de assuntospesquisa de artigos
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Maderas. Ciencia y tecnología

versão On-line ISSN 0718-221X

Resumo

BARADIT, E; AEDO, R  e  CORREA, J. DETECCIÓN DE NUDOS EN MADERA CON TÉCNICAS DE MICROONDAS. Maderas, Cienc. tecnol. [online]. 2003, vol.5, n.1, pp.75-79. ISSN 0718-221X.  http://dx.doi.org/10.4067/S0718-221X2003000100006.

In this preliminary work a study of knots detection in Chilean wood using microwave radiation is realized. A probe system of microwave diode detector array was designed and built. Some specimens of wood with and without knots and different moisture content are used. It was observed that the attenuation of microwave signal mainly is due to fiber orientation changes and not to density changes. This means that for knots and irregularities detection in wood an amplitude and phase analisis is required which implies a modulation process for lowering the operation frequency. In this work only the voltage level distribution is studied

Palavras-chave : knots; microwaves detection; wood.

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