Laser parameters optimization for the artifacts silver coated surfaces cleaning
2017
Преузимање 🢃
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
In recent decades, lasers have become the devices that came out of research laboratories and are widely used
in industry, engineering, medicine, arts, etc. Among the many applications, lasers have found a place in the
conservation of cultural heritage as a source of radiation in the modern diagnostic techniques, cleaning and
scanning objects of priceless value [1]. Their importance in cleaning of cultural heritage objects is based on
the properties of these techniques, such as high sensitivity, nondestructivity, selectivity, flexibility, on-site
applicability and others.
Laser techniques application in metal artifacts cleaning has to be carefully evaluated due to complex
phenomena in laser–metal interaction and specificity of every artifact item. There is a large variety of metal
materials and their combinations in cultural heritage. Also, the different organic and inorganic encrustations
and corrosion products in different progression stage can be found on artifacts surfaces ...[2,3].
Therefore, the optimization of laser parameters for safe and effective metal artifacts cleaning process is
important step in order to avoid unwanted side-effects such as changes in the color or grater surface damages.
A specific field of the metal surface laser cleaning is the cleaning of thin metal foils and coated surfaces. In
cultural heritage such examples are metal yarns on the textile embroidery [4, 5]. Often, these yarns are coated
with some precious metal as are silver or gold.
This paper presents a study of laser cleaning parameters for safe and effective cleaning of silver coated copper
metal yarns. In that purpose the preliminary investigation are performed on silver coated copper plate. That
investigation involve numerical modeling of laser– silver coated copper plate interaction and experimental
irradiation of real sample surface with pulsed nanosecond Nd:YAG laser by changing laser parameters as are
wavelength, laser beam energy and number of pulses. The numerical 3D model of the generated heat on the
silver coated copper plate was obtained using the COMSOL Multiphysics software package and was carried
out with the aim to define the temperature distribution around the irradiated zone and the maximum
temperatures.
Optical microscopy, SEM and EDX analysis are used for the diagnosis of the morphological and chemical
effects of laser irradiation on real sample surface. Obtained results are compared with results of laser
irradiation analyses on naturally tarnished metal yarns embroidery from museum sample.
This investigation confirms that Nd:YAG lasers can be successfully used for metal yarns cleaning. Application
of adequate numerical model can provide an opportunity for a faster and cheaper determination of the cleaning
process optimum values range. Some parameters for successfully and safely cleaning of silver coated
copper surface were determined.
Кључне речи:
laser / parameters optimization / silver / surfaces cleaningИзвор:
Book of abstracts - PHOTONICA 2017, The Sixth International School and Conference on Photonics & COST actions: MP1406 and MP1402 & H2020-MSCA-RISE-2015 CARDIALLY workshop, 28 August 1 September 2017 Belgrade, Serbia, 2017, 181-181Издавач:
- Belgrade: Institute of Physics
Институција/група
IHTMTY - CONF AU - Radojković, Bojana AU - Ristić, Slavica AU - Polić, Suzana R. AU - Jegdić, Bore AU - Janićijević, Milovan PY - 2017 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/7580 AB - In recent decades, lasers have become the devices that came out of research laboratories and are widely used in industry, engineering, medicine, arts, etc. Among the many applications, lasers have found a place in the conservation of cultural heritage as a source of radiation in the modern diagnostic techniques, cleaning and scanning objects of priceless value [1]. Their importance in cleaning of cultural heritage objects is based on the properties of these techniques, such as high sensitivity, nondestructivity, selectivity, flexibility, on-site applicability and others. Laser techniques application in metal artifacts cleaning has to be carefully evaluated due to complex phenomena in laser–metal interaction and specificity of every artifact item. There is a large variety of metal materials and their combinations in cultural heritage. Also, the different organic and inorganic encrustations and corrosion products in different progression stage can be found on artifacts surfaces [2,3]. Therefore, the optimization of laser parameters for safe and effective metal artifacts cleaning process is important step in order to avoid unwanted side-effects such as changes in the color or grater surface damages. A specific field of the metal surface laser cleaning is the cleaning of thin metal foils and coated surfaces. In cultural heritage such examples are metal yarns on the textile embroidery [4, 5]. Often, these yarns are coated with some precious metal as are silver or gold. This paper presents a study of laser cleaning parameters for safe and effective cleaning of silver coated copper metal yarns. In that purpose the preliminary investigation are performed on silver coated copper plate. That investigation involve numerical modeling of laser– silver coated copper plate interaction and experimental irradiation of real sample surface with pulsed nanosecond Nd:YAG laser by changing laser parameters as are wavelength, laser beam energy and number of pulses. The numerical 3D model of the generated heat on the silver coated copper plate was obtained using the COMSOL Multiphysics software package and was carried out with the aim to define the temperature distribution around the irradiated zone and the maximum temperatures. Optical microscopy, SEM and EDX analysis are used for the diagnosis of the morphological and chemical effects of laser irradiation on real sample surface. Obtained results are compared with results of laser irradiation analyses on naturally tarnished metal yarns embroidery from museum sample. This investigation confirms that Nd:YAG lasers can be successfully used for metal yarns cleaning. Application of adequate numerical model can provide an opportunity for a faster and cheaper determination of the cleaning process optimum values range. Some parameters for successfully and safely cleaning of silver coated copper surface were determined. PB - Belgrade: Institute of Physics C3 - Book of abstracts - PHOTONICA 2017, The Sixth International School and Conference on Photonics & COST actions: MP1406 and MP1402 & H2020-MSCA-RISE-2015 CARDIALLY workshop, 28 August 1 September 2017 Belgrade, Serbia T1 - Laser parameters optimization for the artifacts silver coated surfaces cleaning SP - 181 EP - 181 UR - https://hdl.handle.net/21.15107/rcub_cer_7580 ER -
@conference{ author = "Radojković, Bojana and Ristić, Slavica and Polić, Suzana R. and Jegdić, Bore and Janićijević, Milovan", year = "2017", abstract = "In recent decades, lasers have become the devices that came out of research laboratories and are widely used in industry, engineering, medicine, arts, etc. Among the many applications, lasers have found a place in the conservation of cultural heritage as a source of radiation in the modern diagnostic techniques, cleaning and scanning objects of priceless value [1]. Their importance in cleaning of cultural heritage objects is based on the properties of these techniques, such as high sensitivity, nondestructivity, selectivity, flexibility, on-site applicability and others. Laser techniques application in metal artifacts cleaning has to be carefully evaluated due to complex phenomena in laser–metal interaction and specificity of every artifact item. There is a large variety of metal materials and their combinations in cultural heritage. Also, the different organic and inorganic encrustations and corrosion products in different progression stage can be found on artifacts surfaces [2,3]. Therefore, the optimization of laser parameters for safe and effective metal artifacts cleaning process is important step in order to avoid unwanted side-effects such as changes in the color or grater surface damages. A specific field of the metal surface laser cleaning is the cleaning of thin metal foils and coated surfaces. In cultural heritage such examples are metal yarns on the textile embroidery [4, 5]. Often, these yarns are coated with some precious metal as are silver or gold. This paper presents a study of laser cleaning parameters for safe and effective cleaning of silver coated copper metal yarns. In that purpose the preliminary investigation are performed on silver coated copper plate. That investigation involve numerical modeling of laser– silver coated copper plate interaction and experimental irradiation of real sample surface with pulsed nanosecond Nd:YAG laser by changing laser parameters as are wavelength, laser beam energy and number of pulses. The numerical 3D model of the generated heat on the silver coated copper plate was obtained using the COMSOL Multiphysics software package and was carried out with the aim to define the temperature distribution around the irradiated zone and the maximum temperatures. Optical microscopy, SEM and EDX analysis are used for the diagnosis of the morphological and chemical effects of laser irradiation on real sample surface. Obtained results are compared with results of laser irradiation analyses on naturally tarnished metal yarns embroidery from museum sample. This investigation confirms that Nd:YAG lasers can be successfully used for metal yarns cleaning. Application of adequate numerical model can provide an opportunity for a faster and cheaper determination of the cleaning process optimum values range. Some parameters for successfully and safely cleaning of silver coated copper surface were determined.", publisher = "Belgrade: Institute of Physics", journal = "Book of abstracts - PHOTONICA 2017, The Sixth International School and Conference on Photonics & COST actions: MP1406 and MP1402 & H2020-MSCA-RISE-2015 CARDIALLY workshop, 28 August 1 September 2017 Belgrade, Serbia", title = "Laser parameters optimization for the artifacts silver coated surfaces cleaning", pages = "181-181", url = "https://hdl.handle.net/21.15107/rcub_cer_7580" }
Radojković, B., Ristić, S., Polić, S. R., Jegdić, B.,& Janićijević, M.. (2017). Laser parameters optimization for the artifacts silver coated surfaces cleaning. in Book of abstracts - PHOTONICA 2017, The Sixth International School and Conference on Photonics & COST actions: MP1406 and MP1402 & H2020-MSCA-RISE-2015 CARDIALLY workshop, 28 August 1 September 2017 Belgrade, Serbia Belgrade: Institute of Physics., 181-181. https://hdl.handle.net/21.15107/rcub_cer_7580
Radojković B, Ristić S, Polić SR, Jegdić B, Janićijević M. Laser parameters optimization for the artifacts silver coated surfaces cleaning. in Book of abstracts - PHOTONICA 2017, The Sixth International School and Conference on Photonics & COST actions: MP1406 and MP1402 & H2020-MSCA-RISE-2015 CARDIALLY workshop, 28 August 1 September 2017 Belgrade, Serbia. 2017;:181-181. https://hdl.handle.net/21.15107/rcub_cer_7580 .
Radojković, Bojana, Ristić, Slavica, Polić, Suzana R., Jegdić, Bore, Janićijević, Milovan, "Laser parameters optimization for the artifacts silver coated surfaces cleaning" in Book of abstracts - PHOTONICA 2017, The Sixth International School and Conference on Photonics & COST actions: MP1406 and MP1402 & H2020-MSCA-RISE-2015 CARDIALLY workshop, 28 August 1 September 2017 Belgrade, Serbia (2017):181-181, https://hdl.handle.net/21.15107/rcub_cer_7580 .