BEHAVIOR OF ULTRASONIC WAVES IN WOOD WITH PRESENCE OF HOLES
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Cerne (Online) |
Texto Completo: | https://cerne.ufla.br/site/index.php/CERNE/article/view/849 |
Resumo: | This work aimed to analyze the pattern of variation in wave lengths in presence of wood holes and to develop a model capable of describing the process. To attain that end, wood pieces were used from species pequiá (Aspidosperma desmanthum), on which circular and linear artificial holes were made and gradually enlarged. Ultrasonic tests were performed using USLab equipment and 45 kHz transducers. Measurements were taken first on the intact piece and then after each stage of artificial hole enlargement. Results demonstrated that propagation velocities of ultrasonic waves are affected by presence of holes and also that reduction in velocity is caused by changes in wave path, since waves tend to deviate from empty space and travel through matter. The circular hole type had a slightly stronger influence on velocity reduction than the linear hole type. Variation in velocity as a function of increasing percentage of hollow space relative to the intact piece can be represented by a linear model. |
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Cerne (Online) |
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BEHAVIOR OF ULTRASONIC WAVES IN WOOD WITH PRESENCE OF HOLESPequiá (Aspidosperma desmanthum)wave lengthacoustic methodforest sector.This work aimed to analyze the pattern of variation in wave lengths in presence of wood holes and to develop a model capable of describing the process. To attain that end, wood pieces were used from species pequiá (Aspidosperma desmanthum), on which circular and linear artificial holes were made and gradually enlarged. Ultrasonic tests were performed using USLab equipment and 45 kHz transducers. Measurements were taken first on the intact piece and then after each stage of artificial hole enlargement. Results demonstrated that propagation velocities of ultrasonic waves are affected by presence of holes and also that reduction in velocity is caused by changes in wave path, since waves tend to deviate from empty space and travel through matter. The circular hole type had a slightly stronger influence on velocity reduction than the linear hole type. Variation in velocity as a function of increasing percentage of hollow space relative to the intact piece can be represented by a linear model.CERNECERNE2016-04-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://cerne.ufla.br/site/index.php/CERNE/article/view/849CERNE; Vol. 18 No. 3 (2012); 507-514CERNE; v. 18 n. 3 (2012); 507-5142317-63420104-7760reponame:Cerne (Online)instname:Universidade Federal de Lavras (UFLA)instacron:UFLAenghttps://cerne.ufla.br/site/index.php/CERNE/article/view/849/628Copyright (c) 2016 CERNEinfo:eu-repo/semantics/openAccessSecco, Chiara BarrosGonçalves, RaquelCerri, Domingos Guilherme PelegrinoVasques, Érica CarolineBatista, Fernando Augusto Franco2016-04-20T09:50:57Zoai:cerne.ufla.br:article/849Revistahttps://cerne.ufla.br/site/index.php/CERNEPUBhttps://cerne.ufla.br/site/index.php/CERNE/oaicerne@dcf.ufla.br||cerne@dcf.ufla.br2317-63420104-7760opendoar:2024-05-21T19:54:07.822635Cerne (Online) - Universidade Federal de Lavras (UFLA)true |
dc.title.none.fl_str_mv |
BEHAVIOR OF ULTRASONIC WAVES IN WOOD WITH PRESENCE OF HOLES |
title |
BEHAVIOR OF ULTRASONIC WAVES IN WOOD WITH PRESENCE OF HOLES |
spellingShingle |
BEHAVIOR OF ULTRASONIC WAVES IN WOOD WITH PRESENCE OF HOLES Secco, Chiara Barros Pequiá (Aspidosperma desmanthum) wave length acoustic method forest sector. |
title_short |
BEHAVIOR OF ULTRASONIC WAVES IN WOOD WITH PRESENCE OF HOLES |
title_full |
BEHAVIOR OF ULTRASONIC WAVES IN WOOD WITH PRESENCE OF HOLES |
title_fullStr |
BEHAVIOR OF ULTRASONIC WAVES IN WOOD WITH PRESENCE OF HOLES |
title_full_unstemmed |
BEHAVIOR OF ULTRASONIC WAVES IN WOOD WITH PRESENCE OF HOLES |
title_sort |
BEHAVIOR OF ULTRASONIC WAVES IN WOOD WITH PRESENCE OF HOLES |
author |
Secco, Chiara Barros |
author_facet |
Secco, Chiara Barros Gonçalves, Raquel Cerri, Domingos Guilherme Pelegrino Vasques, Érica Caroline Batista, Fernando Augusto Franco |
author_role |
author |
author2 |
Gonçalves, Raquel Cerri, Domingos Guilherme Pelegrino Vasques, Érica Caroline Batista, Fernando Augusto Franco |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Secco, Chiara Barros Gonçalves, Raquel Cerri, Domingos Guilherme Pelegrino Vasques, Érica Caroline Batista, Fernando Augusto Franco |
dc.subject.por.fl_str_mv |
Pequiá (Aspidosperma desmanthum) wave length acoustic method forest sector. |
topic |
Pequiá (Aspidosperma desmanthum) wave length acoustic method forest sector. |
description |
This work aimed to analyze the pattern of variation in wave lengths in presence of wood holes and to develop a model capable of describing the process. To attain that end, wood pieces were used from species pequiá (Aspidosperma desmanthum), on which circular and linear artificial holes were made and gradually enlarged. Ultrasonic tests were performed using USLab equipment and 45 kHz transducers. Measurements were taken first on the intact piece and then after each stage of artificial hole enlargement. Results demonstrated that propagation velocities of ultrasonic waves are affected by presence of holes and also that reduction in velocity is caused by changes in wave path, since waves tend to deviate from empty space and travel through matter. The circular hole type had a slightly stronger influence on velocity reduction than the linear hole type. Variation in velocity as a function of increasing percentage of hollow space relative to the intact piece can be represented by a linear model. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-04-05 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://cerne.ufla.br/site/index.php/CERNE/article/view/849 |
url |
https://cerne.ufla.br/site/index.php/CERNE/article/view/849 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://cerne.ufla.br/site/index.php/CERNE/article/view/849/628 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2016 CERNE info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2016 CERNE |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
CERNE CERNE |
publisher.none.fl_str_mv |
CERNE CERNE |
dc.source.none.fl_str_mv |
CERNE; Vol. 18 No. 3 (2012); 507-514 CERNE; v. 18 n. 3 (2012); 507-514 2317-6342 0104-7760 reponame:Cerne (Online) instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Cerne (Online) |
collection |
Cerne (Online) |
repository.name.fl_str_mv |
Cerne (Online) - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
cerne@dcf.ufla.br||cerne@dcf.ufla.br |
_version_ |
1799874941884039168 |