The Fundamental Mechanisms of Laser Cleaning Technology and Its Typical Applications in Industry

Zhou, Zhaoying; Sun, Wei; Wu, Jiajun; Chen, Hongwei; Wang, Shirong; Wang, Shuangxi

doi:10.3390/pr11051445

Cited by 22 publications

(3 citation statements)

References 54 publications

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“…In addition, Nishihara et al (2019) cleaning of molds is performed using a 70W fiber laser to remove dirt and oil from metal surfaces. Zhihu Zhou et al (2023) have also explained the mechanism of laser cleaning and confirmed its effectiveness for cleaning metal and non-metal materials. Matsui (2003) reported the superiority of using lasers for graffiti removal on concrete.…”

Section: Introductionmentioning

confidence: 89%

Environmental Improvements for Renovation Work Using Laser Scraping

Nagai,

Imazeki,

Kaneko

et al. 2023

Proceedings of the 31st Annual Conference of the International Group for Lean Construction (IGLC31)

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Construction sites in general are in environments where noise, vibration, and dust including. Especially in renovation and demolition works, concrete cutting, drilling, and scraping require not only loud noise, vibration, and dust, but also long hours of reaction force from the workers to use the machinery. Robotization has progressed in recent years and the environment for workers is improving, but the working environment in general sites where robots are difficult to install remains a challenge.This study aims to develop a method to improve the noise and other working environments of refurbishment works. This paper describes the results of a feasibility study on a laser scraping method to reduce noise in the renovation of infrastructure facilities around residential suburban areas. The results show that thin cement adhering to the rebar can be removed by the low power laser. Furthermore, a comparison of the noise level with conventional methods on site confirmed the superiority of laser scraping. This result indicates, in terms of lean construction, will reduce waste and improve the quality of the site.

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Section: Introductionmentioning

confidence: 89%

Environmental Improvements for Renovation Work Using Laser Scraping

Nagai,

Imazeki,

Kaneko

et al. 2023

Proceedings of the 31st Annual Conference of the International Group for Lean Construction (IGLC31)

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“…Lasers have quickly expanded in several industries because of their superior and remarkable qualities. Currently, practically every industry, including national defence, agriculture, and manufacturing, uses lasers extensively (Ion, 2005;Tong et al, 2022;Zhou et al, 2023). High-power laser sources offer new opportunities for material processing with different wavelengths.…”

Section: Figure 2 Basic Principles Of Laser Beam Generation (Justande...mentioning

confidence: 99%

Renewable Energy Solutions for Commercial Ships

Özbey,

Tıkız

2024

21. Yüzyılda Mühendislikte Çağdaş Araştırma Uygulamaları Üzerine Disiplinler Arası Çalışmalar- VI

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Maritime transportation is a keystone of the global economy, facilitating more than 90% of international trade by a fleet of nearly 90,000 vessels. However, the sector's reliance on fossil fuels brings with it significant environmental challenges, including greenhouse gas emissions, air and water pollution, and impacts on marine ecosystems. To address these issues and increase sustainability, there is a growing trend towards integrating renewable energy sources in the maritime sector. In particular, ocean-going vessels contribute more than 3% of global carbon dioxide emissions, while petroleum-based fuels emit significant amounts of nitrogen oxides and sulphur dioxide. In addition, shipping emissions are a major source of ambient air pollution in coastal areas. Projections indicate a potential 50-250% increase in carbon dioxide emissions from international shipping by 2050 if current trends continue. Renewable energy solutions such as wind, solar and nuclear power offer promising alternatives, with advances in technology increasing their efficiency and affordability. However, the transition to marine renewable energy requires overcoming technological barriers, infrastructure limitations and financial challenges. Despite these barriers, adopting renewable energy sources offers an applicable way to reduce the environmental impacts of shipping and ensure a sustainable future for the industry. This study focuses on renewable energy sources used in commercial ships and discusses alternative solutions such as wind, solar and nuclear energy. Furthermore, by highlighting the potential and advantages of renewable energy sources used on commercial ships, this study can be seen as an important step towards reducing environmental impacts and increasing sustainability in the maritime industry.

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“…The substance usually turns into plasma at high laser flux levels. Additionally, the covalent bonds in the polymer chains are broken by the energy of the UV photons, which causes photochemical ablation [15]. Corneal ablation using ultraviolet (UV) short pulsed lasers doesn't rise the temperature of the eye to significant values [16].…”

Section: Introductionmentioning

confidence: 99%

A modified model for laser-cornea interaction following the ablation effect in the laser eye-surgery

Abdelhalim,

Hamdy,

Hassan

et al. 2023

Beni-Suef Univ J Basic Appl Sci

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Background Laser corneal reshaping is a successful treatment of many refraction disorders. However, some physical demonstrations for the laser interaction with cornea are not fully explained. In the current paper, we present a modified model to precisely investigate the ablation threshold, the ablation rate and the physical/chemical mechanisms in that action. Results The model discusses the possible photochemical reaction between the incident photons and various components of the cornea. Such photochemical reaction may end by photo-ablation or just molecular electronic excitation. The ablation threshold is also produced by other chemical reaction. Finally another chemical reaction creates out-site fragments. Moreover, the effect of applying different laser wavelengths, namely the common excimer-laser (193-nm), and the solid-state lasers (213-nm & 266-nm) has been investigated. Conclusion Despite the success and ubiquity of the Argon Fluoride “ArF” laser, our results reveal that a carefully designed 213-nm laser gives the same outcomes with the potential of possible lower operational drawbacks related with heat generation and diffusion.

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The Fundamental Mechanisms of Laser Cleaning Technology and Its Typical Applications in Industry

Cited by 22 publications

References 54 publications

Environmental Improvements for Renovation Work Using Laser Scraping

Environmental Improvements for Renovation Work Using Laser Scraping

Renewable Energy Solutions for Commercial Ships

A modified model for laser-cornea interaction following the ablation effect in the laser eye-surgery

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