Challenges in laser cleaning of cultural heritage stained glass

Detalhes bibliográficos
Autor(a) principal: Schiavon, Nicola
Data de Publicação: 2022
Outros Autores: Maingi, Evan Maina, Pilar Abad, Maria Alonso, Treil, Valerie, De La Fuente, Xerman, Angurel, Luis, Chapoulie, Remy, Rahman, MD Ashiqur, Dubernet, Stephan
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10174/35300
Resumo: Stained-glass windows play an important role in cultural heritage. Human and environmental factors have subjected these pieces to risks of damage. Mechanical and chemical- based cleaning methods have been used for their restoration and conservation. Additionally, short-pulse lasers have opened new opportunities for safe and controlled cleaning and restoration of these important materials. In this work, ultra-short pulsed lasers were used to clean an artificially applied coating from the surface of a contemporary colorless glass frequently used in the restoration of stained-glass windows. One of the objectives was to explore the applicability of using these types of lasers to safely clean historical stained-glass windows. It was observed that temperature rise and subsequent heat accumulation in the coating layer being removed was sufficient to generate significant thermal stresses on the underlying glass surface leading to damages even when the laser energies are lower than the damage thresholds. Some laser treatments that limit this heat accumulation were designed in this study. For laser systems operating at frequencies in the range of several hundreds of kHz, the option was to work in burst mode, limiting the number of pulses in each burst and selecting an adequate time lapse between two consecutive burst runs. A method to uniformly clean a given surface is proposed in this work. When lower frequencies are available, treatments using frequencies lower than 20 kHz are enough to safely clean the glass. When UV laser radiation is used, optical damage is also an important aspect to be considered. In this case, the cleaning protocol has to deal with both issues, to avoid heat accumulation and chemical damage
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spelling Challenges in laser cleaning of cultural heritage stained glassGlassLaser CleaningStained-glass windows play an important role in cultural heritage. Human and environmental factors have subjected these pieces to risks of damage. Mechanical and chemical- based cleaning methods have been used for their restoration and conservation. Additionally, short-pulse lasers have opened new opportunities for safe and controlled cleaning and restoration of these important materials. In this work, ultra-short pulsed lasers were used to clean an artificially applied coating from the surface of a contemporary colorless glass frequently used in the restoration of stained-glass windows. One of the objectives was to explore the applicability of using these types of lasers to safely clean historical stained-glass windows. It was observed that temperature rise and subsequent heat accumulation in the coating layer being removed was sufficient to generate significant thermal stresses on the underlying glass surface leading to damages even when the laser energies are lower than the damage thresholds. Some laser treatments that limit this heat accumulation were designed in this study. For laser systems operating at frequencies in the range of several hundreds of kHz, the option was to work in burst mode, limiting the number of pulses in each burst and selecting an adequate time lapse between two consecutive burst runs. A method to uniformly clean a given surface is proposed in this work. When lower frequencies are available, treatments using frequencies lower than 20 kHz are enough to safely clean the glass. When UV laser radiation is used, optical damage is also an important aspect to be considered. In this case, the cleaning protocol has to deal with both issues, to avoid heat accumulation and chemical damageEuropean Commission under Grant Agreement 766311 - H2020-MSCA-ITN-EJD ED-ARCHMAT ProjectIOP Publishing Ltd2023-06-28T11:45:05Z2023-06-282022-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/35300http://hdl.handle.net/10174/35300engEvan Maina Maingi et al 2022 J. Phys.: Conf. Ser. 2204 012079https://iopscience.iop.org/article/10.1088/1742-6596/2204/1/012079/pdfschiavon@uevora.ptemmaingi@ubu.esmpaabad@ubu.esvalerie.treil@gmail.comxerman@unizar.esangurel@unizar.eschapouli@u-bordeaux-montaigne.frashiqur@unizar.esStephan.Dubernet@u-bordeaux-montaigne.fr247DOI 10.1088/1742-6596/2204/1/012079Schiavon, NicolaMaingi, Evan MainaPilar Abad, Maria AlonsoTreil, ValerieDe La Fuente, XermanAngurel, LuisChapoulie, RemyRahman, MD AshiqurDubernet, Stephaninfo: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:RCAAP2024-01-03T19:38:45Zoai:dspace.uevora.pt:10174/35300Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:23:44.184509Repositório 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 Challenges in laser cleaning of cultural heritage stained glass
title Challenges in laser cleaning of cultural heritage stained glass
spellingShingle Challenges in laser cleaning of cultural heritage stained glass
Schiavon, Nicola
Glass
Laser Cleaning
title_short Challenges in laser cleaning of cultural heritage stained glass
title_full Challenges in laser cleaning of cultural heritage stained glass
title_fullStr Challenges in laser cleaning of cultural heritage stained glass
title_full_unstemmed Challenges in laser cleaning of cultural heritage stained glass
title_sort Challenges in laser cleaning of cultural heritage stained glass
author Schiavon, Nicola
author_facet Schiavon, Nicola
Maingi, Evan Maina
Pilar Abad, Maria Alonso
Treil, Valerie
De La Fuente, Xerman
Angurel, Luis
Chapoulie, Remy
Rahman, MD Ashiqur
Dubernet, Stephan
author_role author
author2 Maingi, Evan Maina
Pilar Abad, Maria Alonso
Treil, Valerie
De La Fuente, Xerman
Angurel, Luis
Chapoulie, Remy
Rahman, MD Ashiqur
Dubernet, Stephan
author2_role author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Schiavon, Nicola
Maingi, Evan Maina
Pilar Abad, Maria Alonso
Treil, Valerie
De La Fuente, Xerman
Angurel, Luis
Chapoulie, Remy
Rahman, MD Ashiqur
Dubernet, Stephan
dc.subject.por.fl_str_mv Glass
Laser Cleaning
topic Glass
Laser Cleaning
description Stained-glass windows play an important role in cultural heritage. Human and environmental factors have subjected these pieces to risks of damage. Mechanical and chemical- based cleaning methods have been used for their restoration and conservation. Additionally, short-pulse lasers have opened new opportunities for safe and controlled cleaning and restoration of these important materials. In this work, ultra-short pulsed lasers were used to clean an artificially applied coating from the surface of a contemporary colorless glass frequently used in the restoration of stained-glass windows. One of the objectives was to explore the applicability of using these types of lasers to safely clean historical stained-glass windows. It was observed that temperature rise and subsequent heat accumulation in the coating layer being removed was sufficient to generate significant thermal stresses on the underlying glass surface leading to damages even when the laser energies are lower than the damage thresholds. Some laser treatments that limit this heat accumulation were designed in this study. For laser systems operating at frequencies in the range of several hundreds of kHz, the option was to work in burst mode, limiting the number of pulses in each burst and selecting an adequate time lapse between two consecutive burst runs. A method to uniformly clean a given surface is proposed in this work. When lower frequencies are available, treatments using frequencies lower than 20 kHz are enough to safely clean the glass. When UV laser radiation is used, optical damage is also an important aspect to be considered. In this case, the cleaning protocol has to deal with both issues, to avoid heat accumulation and chemical damage
publishDate 2022
dc.date.none.fl_str_mv 2022-01-01T00:00:00Z
2023-06-28T11:45:05Z
2023-06-28
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 http://hdl.handle.net/10174/35300
http://hdl.handle.net/10174/35300
url http://hdl.handle.net/10174/35300
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Evan Maina Maingi et al 2022 J. Phys.: Conf. Ser. 2204 012079
https://iopscience.iop.org/article/10.1088/1742-6596/2204/1/012079/pdf
schiavon@uevora.pt
emmaingi@ubu.es
mpaabad@ubu.es
valerie.treil@gmail.com
xerman@unizar.es
angurel@unizar.es
chapouli@u-bordeaux-montaigne.fr
ashiqur@unizar.es
Stephan.Dubernet@u-bordeaux-montaigne.fr
247
DOI 10.1088/1742-6596/2204/1/012079
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv IOP Publishing Ltd
publisher.none.fl_str_mv IOP Publishing Ltd
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instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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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
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