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Advanced Laser Ablation and Damage in Materials
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Advanced Laser Ablation and Damage in Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Mechanics of Materials".

Deadline for manuscript submissions: 10 August 2024 | Viewed by 2476

Special Issue Editors

Prof. Dr. Hongwei Song

E-Mail Website
Guest Editor
Key Laboratory for Mechanics in Fluid–Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
Interests: laser-induced thermal–mechanical effects in composite materials; multifunctional lightweight materials and structures
Dr. Ruixing Wang

E-Mail Website
Guest Editor
Key Laboratory for Mechanics in Fluid-Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
Interests: interaction between laser and matter; multifield coupling numerical computation

Special Issue Information

Dear Colleagues,

Recent advances in high-power continuous-wave (CW) laser and short/ultra-short pulsed laser have introduced novel phenomena and mechanisms of ablation and damage in materials. The intense laser energy can ablate a portion of samples through melting, fusion, oxidation, sublimation, ionization, erosion and/or explosion, inducing punching, yielding, fracturing, pyrolysis, delamination and debonding damages in materials. To reveal the complex high-temperature and high-pressure physical and chemical processes with significant multiphase, multiscale and multifield coupling characteristics, advanced material models, computational methods, diagnostic technologies and artificial intelligent (AI) technology are required. The understanding of these ablation and damage behaviors could accelerate the application of high-power lasers in various industrial sectors, such as advanced manufacturing, thermal protection, rock removal, laser cleaning, laser weapons, etc.

This Special Issue aims to be a forum for the presentation of the latest developments in basic and applied research in the field of laser ablation and damage in materials. Potential topics include, but are not limited to:

  • Phenomena and mechanisms of laser ablation and damage;
  • Thermal and mechanical responses of metals, polymers, ceramics and their composite materials;
  • Theoretical, numerical and experimental characterization;
  • Applications of advanced laser ablation and damage.

Prof. Dr. Hongwei Song
Dr. Ruixing Wang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • laser ablation
  • thermomechanical damage
  • shock wave
  • composite materials
  • multiscale
  • multifield coupling
  • numerical simulation
  • in situ measurements and diagnostics
  • thermal loading identification
  • machine learning

Published Papers (2 papers)

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Research

16 pages, 13867 KiB  
Article
An Efficient Laser Decontamination Process Based on Non-Radioactive Specimens of Nuclear Power Materials
by Yang Hu, Changsheng Liu, Kangte Li, Jian Cheng, Zhiming Zhang and Enhou Han
Materials 2023, 16(24), 7643; https://doi.org/10.3390/ma16247643 - 14 Dec 2023
Viewed by 691
Abstract
Nuclear power components contain radioactivity on their surfaces after long-term service, which can be harmful to personnel and the environment during maintenance, dismantling, and decommissioning. In this experiment, laser decontamination technology is utilized to remove radioactivity from their surfaces. In order to meet [...] Read more.
Nuclear power components contain radioactivity on their surfaces after long-term service, which can be harmful to personnel and the environment during maintenance, dismantling, and decommissioning. In this experiment, laser decontamination technology is utilized to remove radioactivity from their surfaces. In order to meet the actual needs, a laser decontamination process without spot overlapping has been studied. Under the same equipment conditions, the decontamination efficiency of the non-spot overlapping process is 10 times higher than that of the spot overlapping process. Alloy 690 is used as the test substrate, and non-radioactive specimens are prepared by simulating primary-circuit hydrochemical conditions. The surface morphology, elemental composition, and phase composition of the specimens before and after laser decontamination are investigated with SEM and XRD using the single-pulse experiment and power single-factor experiment methods, and the laser decontamination effect was evaluated. The results show that the decontamination efficiency reached 10.8 m2/h under the conditions of a pulse width of 500 ns, a laser repetition frequency of 40 kHz, a scanning speed of 15,000 mm/s, and a line spacing of 0.2 mm, according to which the removal effect was achieved when the laser power was 160 W and the oxygen content on the surface was 6.29%; additionally, there were no oxide phases in the XRD spectra after decontamination. Therefore, the laser cleaning process without spot overlap can provide reference for future practical operations to achieve efficient removal of radioactivity from nuclear power components. Full article
(This article belongs to the Special Issue Advanced Laser Ablation and Damage in Materials)
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16 pages, 15240 KiB  
Article
Instantaneous Ablation Behavior of Laminated CFRP by High-Power Continuous-Wave Laser Irradiation in Supersonic Wind Tunnel
by Te Ma, Jiangtao Wang, Hongwei Song, Ruixing Wang and Wu Yuan
Materials 2023, 16(2), 790; https://doi.org/10.3390/ma16020790 - 13 Jan 2023
Cited by 1 | Viewed by 1379
Abstract
Experimental and numerical investigations of the instantaneous ablation behavior of laminated carbon fiber-reinforced polymer (CFRP) exposed to an intense continuous-wave (CW) laser in a supersonic wind tunnel are reported. We establish an in situ observation measurement in the experiments to examine the instantaneous [...] Read more.
Experimental and numerical investigations of the instantaneous ablation behavior of laminated carbon fiber-reinforced polymer (CFRP) exposed to an intense continuous-wave (CW) laser in a supersonic wind tunnel are reported. We establish an in situ observation measurement in the experiments to examine the instantaneous ablation behavior. The surface recession depth is calculated by using the Particle Image Velocimetry (PIV) method, taking the ply angle of laminated CFRP as a reference. A coupled thermal-fluid-ablation numerical model incorporating mechanisms of oxidation, sublimation, and thermomechanical erosion is developed to solve the ablation-through problem of multilayer materials. The results show that the laser ablation depth is related to the laser power density, airflow velocity and airflow mode. Thermomechanical erosion is the primary ablation mechanism when the surface temperature is relatively low and the cavity flow mode is a closed cavity flow. When the surface temperature reaches the sublimation of carbon and the airflow mode is transformed to open cavity flow, sublimation plays a dominant role and the ablation rate of thermomechanical erosion gradually decreases. Full article
(This article belongs to the Special Issue Advanced Laser Ablation and Damage in Materials)
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