Challenges in laser cleaning of cultural heritage stained glass
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , , , |
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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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 |
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 |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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