Results 21 to 30 of about 4,185,521 (319)
Towards safe and effective femtosecond laser cleaning for the preservation of historic monuments
Applied Physics A, 2023 We explore femtosecond laser cleaning of materials used in the construction of historic monuments, such as stone and steel covered in typical contaminants caused by harsh environments that may be found in urban areas.
J. Brand +4 more
semanticscholar +1 more source
Fiber Coupled High Power Nd:YAG Laser for Nondestructive Laser Cleaning
Photonics, 2023 In this study, a fiber coupled high power side-pumped Nd:YAG laser system for laser cleaning is presented. Based on the two-rod structure and two stages amplifiers, the maximum average output power of 783 W with corresponding pulse energy of 52 mJ at 15 ...
Xiaolei Wang +4 more
doaj +1 more source
Surface preparation by using laser cleaning in thermal spray
, 2008 International audiencePulsed laser cleaning has emerged as a promising technology to challenge traditional surface preparation methods. This paper introduces the PROTAL(R) process, which combines an in situ pulsed laser cleaning with thermal spraying ...
Barnier, V. +4 more
core +4 more sources
Crystals, 2022 With a focus on the particle pollutants on the surface of silicon carbide crystal materials, this paper establishes a laser cleaning model for the fine particles found in silicon carbide crystal materials and proposes a new nanosecond green laser ...
Haibing Xiao +3 more
doaj +1 more source
Laser surface cleaning of stones and some metal objects [PDF]
Engineering and Technology Journal, 2015 Iron, copper and stone samples were cleaned by Nd: YAG laser using different number of nano laser pulses at variable intensities. Fundamental (1.06 µm) and frequency doubled (0.53 µm) wavelengths cleaning efficiency was tested by measuring the crust and ...
Walid Hamoudi +2 more
doaj +1 more source
Substrate Cleaning Threshold for Various Coated Al Alloys Using a Continuous-Wave Laser
Photonics, 2021 In this study, different coatings (gray epoxy primer, white epoxy varnish and red alkyd paint) of 7075 aluminum alloy are cleaned with a 500 W continuous-wave (CW) fiber laser.
Xudong Sun +5 more
doaj +1 more source
Characterization of Laser Cleaning of Artworks [PDF]
Sensors, 2008 The main tasks of conservators of artworks and monuments are the estimation and analysis of damages (present condition), object conservation (cleaning process), and the protection of an object against further degradation. One of the physical methods that is becoming more and more popular for dirt removal is the laser cleaning method. This method is non-
Marczak, Jan +8 more
openaire +3 more sources
Evaluation of the Laser Cleaning Efficacy of Q235 Steel Using Laser-Induced Breakdown Spectroscopy
Metals, 2022 Laser cleaning is a good alternative to ablate and remove contaminants from different samples. To meet the practical demand, we present the elemental analysis of Q235 steel samples, using laser-induced breakdown spectroscopy (LIBS) to enhance the laser ...
Syed Zaheer Ud Din +4 more
doaj +1 more source
Removal mechanism of liquid-assisted nanosecond pulsed laser cleaning TA15 titanium alloy oxide film
Journal of Materials Research and Technology, 2022 Liquid-assisted pulsed laser cleaning is achieved by coating kerosene on titanium alloy oxide film, and the surface was processed to form micro- and nanostructured amorphous-nanocrystalline phases oxidized layer after laser cleaning.
Zhichao Li +7 more
doaj +1 more source
The Surface Properties of an Aviation Aluminum Alloy after Laser Cleaning
Coatings, 2022 In this study, we explored the effects of a laser cleaning process on the surface properties of an aerospace aluminum alloy. We performed surface cleaning on an AA2024 aluminum alloy.
Yuan Ren +4 more
semanticscholar +1 more source