Non-Destructive Testing for Polymer Matrix Composites produced by Additive Manufacturing
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10362/101314 |
Resumo: | The increased use of composite materials produced by Additive Manufacturing (AM), in fields like automotive and aerospace, raises new demands in characterizing a variety of defects that may appear during its production and service life and which have an impact on the structural performance of the component. Conventional Non-destructive testing (NDT) cannot fulfil these new requirements, motivating the research and development of new, innovative approaches that increase the inspection reliability. The purpose of this work is to apply and test the reliability of two innovative NDT techniques, Double Active Transient Thermography (DATT) and reflection mode Air-coupled Ultrasound (ACU), and its inspection parameters to evaluate polymer matrix composites produced by AM. In the DATT experiments, the samples were excited by two heat sources, a cold flow and a heat flow, six different parameters were used (the instant for starting the cold flow and its duration, different defects and the influence of the lid, exposure time, curvature, and instant when the vortex is turned on) and the goal of developing this technique was to observe, with the same level of temperature contrast and at the same time, different defects at different depths and locations. In the ACU experiments, three parameters were studied (, d and dp), and the goal was to understand their effect in the reflection echo of the wave. The DATT results are promising, allowing an increased understanding of the influence of each parameter and a clearer observation of the three defects with different locations and depths at the same time. The ACU results allow to understand the effect of the studied parameters but future improvements on equipment structure and assembly and the usage of different probes and samples will play a role in better understanding not only the wave’s behaviour but also the advantages of the technique. |
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Non-Destructive Testing for Polymer Matrix Composites produced by Additive ManufacturingAdditive ManufacturingCompositesNon-destructive TestingDouble Active Transient ThermographyAir-coupled UltrasoundDefectsDomínio/Área Científica::Engenharia e Tecnologia::Engenharia MecânicaThe increased use of composite materials produced by Additive Manufacturing (AM), in fields like automotive and aerospace, raises new demands in characterizing a variety of defects that may appear during its production and service life and which have an impact on the structural performance of the component. Conventional Non-destructive testing (NDT) cannot fulfil these new requirements, motivating the research and development of new, innovative approaches that increase the inspection reliability. The purpose of this work is to apply and test the reliability of two innovative NDT techniques, Double Active Transient Thermography (DATT) and reflection mode Air-coupled Ultrasound (ACU), and its inspection parameters to evaluate polymer matrix composites produced by AM. In the DATT experiments, the samples were excited by two heat sources, a cold flow and a heat flow, six different parameters were used (the instant for starting the cold flow and its duration, different defects and the influence of the lid, exposure time, curvature, and instant when the vortex is turned on) and the goal of developing this technique was to observe, with the same level of temperature contrast and at the same time, different defects at different depths and locations. In the ACU experiments, three parameters were studied (, d and dp), and the goal was to understand their effect in the reflection echo of the wave. The DATT results are promising, allowing an increased understanding of the influence of each parameter and a clearer observation of the three defects with different locations and depths at the same time. The ACU results allow to understand the effect of the studied parameters but future improvements on equipment structure and assembly and the usage of different probes and samples will play a role in better understanding not only the wave’s behaviour but also the advantages of the technique.Santos, TelmoMachado, MiguelRUNSilva, Maria Inês Santos2020-07-23T13:42:43Z2020-0720202020-07-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10362/101314enginfo: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:RCAAP2024-03-11T04:47:31Zoai:run.unl.pt:10362/101314Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:39:32.421281Repositório 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 |
Non-Destructive Testing for Polymer Matrix Composites produced by Additive Manufacturing |
title |
Non-Destructive Testing for Polymer Matrix Composites produced by Additive Manufacturing |
spellingShingle |
Non-Destructive Testing for Polymer Matrix Composites produced by Additive Manufacturing Silva, Maria Inês Santos Additive Manufacturing Composites Non-destructive Testing Double Active Transient Thermography Air-coupled Ultrasound Defects Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Mecânica |
title_short |
Non-Destructive Testing for Polymer Matrix Composites produced by Additive Manufacturing |
title_full |
Non-Destructive Testing for Polymer Matrix Composites produced by Additive Manufacturing |
title_fullStr |
Non-Destructive Testing for Polymer Matrix Composites produced by Additive Manufacturing |
title_full_unstemmed |
Non-Destructive Testing for Polymer Matrix Composites produced by Additive Manufacturing |
title_sort |
Non-Destructive Testing for Polymer Matrix Composites produced by Additive Manufacturing |
author |
Silva, Maria Inês Santos |
author_facet |
Silva, Maria Inês Santos |
author_role |
author |
dc.contributor.none.fl_str_mv |
Santos, Telmo Machado, Miguel RUN |
dc.contributor.author.fl_str_mv |
Silva, Maria Inês Santos |
dc.subject.por.fl_str_mv |
Additive Manufacturing Composites Non-destructive Testing Double Active Transient Thermography Air-coupled Ultrasound Defects Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Mecânica |
topic |
Additive Manufacturing Composites Non-destructive Testing Double Active Transient Thermography Air-coupled Ultrasound Defects Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Mecânica |
description |
The increased use of composite materials produced by Additive Manufacturing (AM), in fields like automotive and aerospace, raises new demands in characterizing a variety of defects that may appear during its production and service life and which have an impact on the structural performance of the component. Conventional Non-destructive testing (NDT) cannot fulfil these new requirements, motivating the research and development of new, innovative approaches that increase the inspection reliability. The purpose of this work is to apply and test the reliability of two innovative NDT techniques, Double Active Transient Thermography (DATT) and reflection mode Air-coupled Ultrasound (ACU), and its inspection parameters to evaluate polymer matrix composites produced by AM. In the DATT experiments, the samples were excited by two heat sources, a cold flow and a heat flow, six different parameters were used (the instant for starting the cold flow and its duration, different defects and the influence of the lid, exposure time, curvature, and instant when the vortex is turned on) and the goal of developing this technique was to observe, with the same level of temperature contrast and at the same time, different defects at different depths and locations. In the ACU experiments, three parameters were studied (, d and dp), and the goal was to understand their effect in the reflection echo of the wave. The DATT results are promising, allowing an increased understanding of the influence of each parameter and a clearer observation of the three defects with different locations and depths at the same time. The ACU results allow to understand the effect of the studied parameters but future improvements on equipment structure and assembly and the usage of different probes and samples will play a role in better understanding not only the wave’s behaviour but also the advantages of the technique. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-07-23T13:42:43Z 2020-07 2020 2020-07-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10362/101314 |
url |
http://hdl.handle.net/10362/101314 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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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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1799138011522269184 |