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Mostrando ítems 11-20 de 31
Femtosecond Laser Texturing as a Tool to Increase the Hydrophobicity of Ornamental Stone: The Influence of Lithology and Texture
(Elsevier, 2022-07)
[Abstract] In the field of stone conservation, a very common direct intervention seeks to increase the water repellence of objects. By limiting the interaction between the solid and the water, the possibility of alteration ...
Dual Combination of Cleaning Methods (Scalpel, Biocide, Laser) To Enhance Lichen Removal From Granite
(Elsevier, 2022-03)
[Abstract] Three cleaning methods, namely i) a commercial biocide applied by brush with the subsequent extraction of organic remains by a rod, ii) a scalpel or iii) a Nd:YVO4 laser at 355 nm, single application as well as ...
Ultrafast Laser Surface Texturing: A Sustainable Tool to Modify Wettability Properties of Marble
(MDPI, 2019-07-28)
[Abstract] Conservation strategies to reduce the degradation of stone caused by the action of water are focusing on increasing the hydrophobicity of the surface by imitating existing solutions in nature (lotus leafs and ...
Influence of the weathering rate on the response of granite to nanosecond UV laser irradiation
(Elsevier, 2019-12-13)
[Abstract]: Laser ablation is an accepted cleaning technology for cultural heritage stonework. Optimized laser ablation may,however, have different side effects depending on the mineralogical composition of the stone. In ...
Enhancement of graffiti removal from heritage stone by combining laser ablation and application of a solvent mixture
(Elsevier, 2020-11)
[Abstract] In this study, it was evaluated the combined cleaning treatment based on laser ablation followed by the application of chemical products for removing alkyd graffiti paint from two different types of stone. Three ...
Laser versus scalpel cleaning of crustose lichens on granite
(Elsevier, 2018-02-28)
[Abstract]: This paper addresses the evaluation of the cleaning of crustose lichens developing on granite. The evaluation was performed considering the effectiveness of the cleanings and harmfulness exerted on the granite. ...
Development of processing strategies for 3D controlled laser ablation: Application to the cleaning of stonework surfaces
(Elsevier, 2020-03)
[Abstract] Laser cleaning is an environmentally friendly method based on laser ablation processes to remove impurities or contaminants from a surface layer of a material. The configuration of a laser station in the case ...
A computer vision system for identification of granite-forming minerals based on RGB data and artificial neural networks
(Elsevier, 2017-12-19)
[Abstract]: Granitic stones are widely used in the field of Cultural Heritage in the north-western Iberian Peninsula. In some activities regarding conservation, such as the laser cleaning, it is of great interest the ...
Influence of the commercial finishes of ornamental granites on roughness, colour and reflectance
(Elsevier, 2018-09)
[Abstract] The effects of the four common commercial finishes (polished, honed, disc cutting and bush hammering) on several properties of ornamental granites were evaluated. Two granites of different texture, widely used ...
Visualización de procesos de microdilatación inducidos por Láser mediante el uso de interferometría holográfica digital
(Centro de Investigaciones en Láseres y Aplicaciones (CEILAP), 2023-03-25)
[Resumen]: En este artículo se muestra el uso de holografía interferométrica digital para el estudio de procesos de microdilatación. Mediante el uso de un esquema óptico y una cámara CCD se realizaron interferogramas sobre ...