Combination of non-destructive tests for assessing decay in existing timber elements
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/1822/64388 |
Resumo: | Existing timber structures often present elements with different levels of decay and the choice to maintain them comes from the structural assessment, made by a civil engineer on the basis of the results coming from the on-site survey . The choice may also rely on visual inspection combined non-destructive tests. In that case, the choice to maintain an element will greatly depend on the accuracy and reliability of the results obtained through these tests. This work aims to assess the properties of timber elements through non-destructive tests, using resistance drilling, pin penetration, ultrasound, and acoustic emission tests. The tests were carried out on three timber elements from two old timber roof trusses. The results are analysed regarding the specimen size and the use of multiple non-destructive test parameters. Decay was initially identified by means of visual inspection and different levels of decay were identified taking into account their influence on the non-destructive test results and on the predictability of models based on single and multiple regression analysis. Moreover, the obtained classification was found to increase the reliability on the prediction of density. |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Combination of non-destructive tests for assessing decay in existing timber elementsTimber structuresNon-destructive testDecayCorrelationExperimental evaluationNon-destructive testsEngenharia e Tecnologia::Engenharia CivilScience & TechnologyExisting timber structures often present elements with different levels of decay and the choice to maintain them comes from the structural assessment, made by a civil engineer on the basis of the results coming from the on-site survey . The choice may also rely on visual inspection combined non-destructive tests. In that case, the choice to maintain an element will greatly depend on the accuracy and reliability of the results obtained through these tests. This work aims to assess the properties of timber elements through non-destructive tests, using resistance drilling, pin penetration, ultrasound, and acoustic emission tests. The tests were carried out on three timber elements from two old timber roof trusses. The results are analysed regarding the specimen size and the use of multiple non-destructive test parameters. Decay was initially identified by means of visual inspection and different levels of decay were identified taking into account their influence on the non-destructive test results and on the predictability of models based on single and multiple regression analysis. Moreover, the obtained classification was found to increase the reliability on the prediction of density.This work was partly financed by FEDER funds through the Competitivity Factors Operational Programme - COMPETE and by national funds through FCT (Foundation for Science and Technology) within the scope of the project POCI-01-0145-FEDER-007633. The financial support of FCT, through national funds, within the scope of the project Protimber, PTDC/ECM-EST/1072/2014, is acknowledged.Taylor & FrancisUniversidade do MinhoYu, TaoyiSousa, Hélder S.Branco, Jorge M.20202020-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/64388engYu T., Sousa H.S., Branco J. (2020). Combination of non-destructive tests for assessing decay in existing timber elements. Nondestructive Testing and Evaluation 35(1). pp 29-47. (doi.org/10.1080/10589759.2019.1635593)1058-97591477-267110.1080/10589759.2019.1635593Pre-print version. The final publication is available at Taylor & Francis Online: https://doi.org/10.1080/10589759.2019.1635593info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-10-07T01:21:21Zoai:repositorium.sdum.uminho.pt:1822/64388Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:20:22.872955Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Combination of non-destructive tests for assessing decay in existing timber elements |
title |
Combination of non-destructive tests for assessing decay in existing timber elements |
spellingShingle |
Combination of non-destructive tests for assessing decay in existing timber elements Yu, Taoyi Timber structures Non-destructive test Decay Correlation Experimental evaluation Non-destructive tests Engenharia e Tecnologia::Engenharia Civil Science & Technology |
title_short |
Combination of non-destructive tests for assessing decay in existing timber elements |
title_full |
Combination of non-destructive tests for assessing decay in existing timber elements |
title_fullStr |
Combination of non-destructive tests for assessing decay in existing timber elements |
title_full_unstemmed |
Combination of non-destructive tests for assessing decay in existing timber elements |
title_sort |
Combination of non-destructive tests for assessing decay in existing timber elements |
author |
Yu, Taoyi |
author_facet |
Yu, Taoyi Sousa, Hélder S. Branco, Jorge M. |
author_role |
author |
author2 |
Sousa, Hélder S. Branco, Jorge M. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Yu, Taoyi Sousa, Hélder S. Branco, Jorge M. |
dc.subject.por.fl_str_mv |
Timber structures Non-destructive test Decay Correlation Experimental evaluation Non-destructive tests Engenharia e Tecnologia::Engenharia Civil Science & Technology |
topic |
Timber structures Non-destructive test Decay Correlation Experimental evaluation Non-destructive tests Engenharia e Tecnologia::Engenharia Civil Science & Technology |
description |
Existing timber structures often present elements with different levels of decay and the choice to maintain them comes from the structural assessment, made by a civil engineer on the basis of the results coming from the on-site survey . The choice may also rely on visual inspection combined non-destructive tests. In that case, the choice to maintain an element will greatly depend on the accuracy and reliability of the results obtained through these tests. This work aims to assess the properties of timber elements through non-destructive tests, using resistance drilling, pin penetration, ultrasound, and acoustic emission tests. The tests were carried out on three timber elements from two old timber roof trusses. The results are analysed regarding the specimen size and the use of multiple non-destructive test parameters. Decay was initially identified by means of visual inspection and different levels of decay were identified taking into account their influence on the non-destructive test results and on the predictability of models based on single and multiple regression analysis. Moreover, the obtained classification was found to increase the reliability on the prediction of density. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020 2020-01-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://hdl.handle.net/1822/64388 |
url |
https://hdl.handle.net/1822/64388 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Yu T., Sousa H.S., Branco J. (2020). Combination of non-destructive tests for assessing decay in existing timber elements. Nondestructive Testing and Evaluation 35(1). pp 29-47. (doi.org/10.1080/10589759.2019.1635593) 1058-9759 1477-2671 10.1080/10589759.2019.1635593 Pre-print version. The final publication is available at Taylor & Francis Online: https://doi.org/10.1080/10589759.2019.1635593 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Taylor & Francis |
publisher.none.fl_str_mv |
Taylor & Francis |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799132666088390656 |