Investigation the acoustic behavior of poplar and spruce species reaction wood using ultrasonic technique

The acoustic behavior of reaction and normal woods, phase velocity, group velocity and attenuation coefficients in the main directions for two wood species (Populus deltoids & Picea abies), were measured and compared. The results did not show any significant difference between phase velocities o...

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Autores principales:	Mohammad ali Sadat nia, Ali akbar Enayati, Loeic Brancheriau, Kambiz Pourtahmasi, Farhang Honarparvar
Formato:	article
Lenguaje:	FA
Publicado:	Regional Information Center for Science and Technology (RICeST) 2012
Materias:	tension wood compression wood acoustic behavior phase velocity attenuation coefficient Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/af862dc594264672904ce78dcb600fbb
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spelling	oai:doaj.org-article:af862dc594264672904ce78dcb600fbb2021-12-02T02:52:52ZInvestigation the acoustic behavior of poplar and spruce species reaction wood using ultrasonic technique1735-09132383-112X10.22092/ijwpr.2012.117069https://doaj.org/article/af862dc594264672904ce78dcb600fbb2012-06-01T00:00:00Zhttp://ijwpr.areeo.ac.ir/article_117069_c0e4a08a7913ced2a9f5f3fa610d1168.pdfhttps://doaj.org/toc/1735-0913https://doaj.org/toc/2383-112XThe acoustic behavior of reaction and normal woods, phase velocity, group velocity and attenuation coefficients in the main directions for two wood species (Populus deltoids & Picea abies), were measured and compared. The results did not show any significant difference between phase velocities of normal and tension wood at the same ring in poplar wood. But in compression wood from spruce, phase velocity in longitudinal direction was lower; while in transverse direction was higher compared to normal wood. Group velocity as an index of speed of wave energy in compression wood also was less than that in normal wood. In radial and tangential directions, there was no significant difference between group velocity of compression and normal woods of spruce. In poplar species, in all main directions, the measured group velocities, both for tension and normal woods were identical. The result also showed that the attenuation coefficients in reaction wood of two wood species (poplar and spruce) were less than those of normal wood in all directions. In compression and tension woods, a high correlation was observed between acoustic radiation and wood density.Mohammad ali Sadat niaAli akbar EnayatiLoeic BrancheriauKambiz PourtahmasiFarhang HonarparvarRegional Information Center for Science and Technology (RICeST)articletension woodcompression woodacoustic behaviorphase velocityattenuation coefficientForestrySD1-669.5FAتحقیقات علوم چوب و کاغذ ایران, Vol 27, Iss 2, Pp 306-318 (2012)
institution	DOAJ
collection	DOAJ
language	FA
topic	tension wood compression wood acoustic behavior phase velocity attenuation coefficient Forestry SD1-669.5
spellingShingle	tension wood compression wood acoustic behavior phase velocity attenuation coefficient Forestry SD1-669.5 Mohammad ali Sadat nia Ali akbar Enayati Loeic Brancheriau Kambiz Pourtahmasi Farhang Honarparvar Investigation the acoustic behavior of poplar and spruce species reaction wood using ultrasonic technique
description	The acoustic behavior of reaction and normal woods, phase velocity, group velocity and attenuation coefficients in the main directions for two wood species (Populus deltoids & Picea abies), were measured and compared. The results did not show any significant difference between phase velocities of normal and tension wood at the same ring in poplar wood. But in compression wood from spruce, phase velocity in longitudinal direction was lower; while in transverse direction was higher compared to normal wood. Group velocity as an index of speed of wave energy in compression wood also was less than that in normal wood. In radial and tangential directions, there was no significant difference between group velocity of compression and normal woods of spruce. In poplar species, in all main directions, the measured group velocities, both for tension and normal woods were identical. The result also showed that the attenuation coefficients in reaction wood of two wood species (poplar and spruce) were less than those of normal wood in all directions. In compression and tension woods, a high correlation was observed between acoustic radiation and wood density.
format	article
author	Mohammad ali Sadat nia Ali akbar Enayati Loeic Brancheriau Kambiz Pourtahmasi Farhang Honarparvar
author_facet	Mohammad ali Sadat nia Ali akbar Enayati Loeic Brancheriau Kambiz Pourtahmasi Farhang Honarparvar
author_sort	Mohammad ali Sadat nia
title	Investigation the acoustic behavior of poplar and spruce species reaction wood using ultrasonic technique
title_short	Investigation the acoustic behavior of poplar and spruce species reaction wood using ultrasonic technique
title_full	Investigation the acoustic behavior of poplar and spruce species reaction wood using ultrasonic technique
title_fullStr	Investigation the acoustic behavior of poplar and spruce species reaction wood using ultrasonic technique
title_full_unstemmed	Investigation the acoustic behavior of poplar and spruce species reaction wood using ultrasonic technique
title_sort	investigation the acoustic behavior of poplar and spruce species reaction wood using ultrasonic technique
publisher	Regional Information Center for Science and Technology (RICeST)
publishDate	2012
url	https://doaj.org/article/af862dc594264672904ce78dcb600fbb
work_keys_str_mv	AT mohammadalisadatnia investigationtheacousticbehaviorofpoplarandsprucespeciesreactionwoodusingultrasonictechnique AT aliakbarenayati investigationtheacousticbehaviorofpoplarandsprucespeciesreactionwoodusingultrasonictechnique AT loeicbrancheriau investigationtheacousticbehaviorofpoplarandsprucespeciesreactionwoodusingultrasonictechnique AT kambizpourtahmasi investigationtheacousticbehaviorofpoplarandsprucespeciesreactionwoodusingultrasonictechnique AT farhanghonarparvar investigationtheacousticbehaviorofpoplarandsprucespeciesreactionwoodusingultrasonictechnique
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Investigation the acoustic behavior of poplar and spruce species reaction wood using ultrasonic technique

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