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Laser-Based Manufacturing
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Laser-Based Manufacturing

A special issue of Journal of Manufacturing and Materials Processing (ISSN 2504-4494).

Deadline for manuscript submissions: closed (31 December 2019) | Viewed by 10166

Special Issue Editors

Dr. Antonio Riveiro

E-Mail Website
Guest Editor
Department of Materials Engineering, Applied Mechanics and Construction, School of Engineering, University of Vigo, Lagoas Marcosende s/n, 36310 Vigo, Spain
Interests: laser processing; laser welding; laser cutting; laser cladding; laser texturing; laser surface treatments; laser microprocessing; laser drilling; laser-based additive manufacturing; biomaterials; nanomaterials
Special Issues, Collections and Topics in MDPI journals
Dr. Jesús del Val

E-Mail Website
Guest Editor
1. Applied Physics Department, University of Vigo, Vigo, Spain
2. LaserON Laser Applications Research Group, University of Vigo, Industrial Technological Research Centre - MTI, Rúa Maxwel, 36310 Vigo, Spain
Interests: laser materials processing; laser surface modification; laser micro-cladding; laser micro-texturization; bioactive glasses processing and characterization; nanoparticle production by laser ablation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear colleagues,

Laser-based manufacturing is currently applied in many different industries to process different kinds of materials, from ceramics to polymers and all the way to metals. Advances in laser technology have allowed the laser processing of virtually any material with unprecedented precision and efficiency. In addition, laser technology has opened the door to previously non-existent processes (mainly for the processing of materials at the micro- and nanoscale).

This Special Issue on “Laser-Based Manufacturing” welcomes contributions addressing novel applications of the laser technology for manufacturing purposes. Conventional applications of lasers, such as in laser cutting, welding, drilling, surface treatment, etc. up to more innovative ones, such as laser-based micro- and nano-manufacturing, will be addressed in this Special Issue.   

Suitable topics include, but are not limited to:

  • Laser cutting;
  • Laser welding;
  • Laser drilling;
  • Laser cladding;
  • Laser hardening;
  • Laser alloying;
  • Laser texturing;
  • Laser-shock peening;
  • Laser-based additive manufacturing;
  • Laser micro-manufacturing;
  • Laser nano-manufacturing.

Dr. Antonio Riveiro
Dr. Jesús Del Val
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. Journal of Manufacturing and Materials Processing 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 1800 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.

Published Papers (3 papers)

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Research

16 pages, 17867 KiB  
Article
Multi-Cycle Process Signature of Laser-Induced Thermochemical Polishing
by Sandro Eckert
J. Manuf. Mater. Process. 2019, 3(4), 90; https://doi.org/10.3390/jmmp3040090 - 17 Oct 2019
Cited by 2 | Viewed by 2929
Abstract
Laser-induced thermochemical polishing (LCP) is a non-conventional processing technique that uses laser radiation to smooth the surface of self-passivated metallic parts by initiating a localized anodic material dissolution. This technology can be used to selectively micro-polish without the need for masking or thermal [...] Read more.
Laser-induced thermochemical polishing (LCP) is a non-conventional processing technique that uses laser radiation to smooth the surface of self-passivated metallic parts by initiating a localized anodic material dissolution. This technology can be used to selectively micro-polish without the need for masking or thermal and mechanical stress. However, there is still a lack in understanding the surface quality depending on the applied laser machining parameters. This paper takes up the concept of Process Signatures and interprets the surface smoothing as result of multiple, recurring internal material loads of a constant energy amount. The laser-induced thermal impact is identified as the relevant internal material load and is correlated with the surface roughness. This derives an empirical-based functional relation as multi-cycle Process Signature. The experiment results show an exponential decay in surface roughness with increasing cycle loads for titanium, Ti6Al4V, Nitinol, Stellite 21, and metallic glass. The Process Signature of LCP is a solution to a differential equation with respect to the cycle loads. The paper demonstrates how the multi-cycle Process Signature helps determine suitable machining parameters to predict the surface roughness, as well as to scale the polishing rate. Full article
(This article belongs to the Special Issue Laser-Based Manufacturing)
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9 pages, 7356 KiB  
Article
Influence of the Wire Feeding on the Wetting Process during Laser Brazing of Aluminum Alloys with Aluminum-Based Braze Material
by Till Leithäuser and Peer Woizeschke
J. Manuf. Mater. Process. 2019, 3(4), 83; https://doi.org/10.3390/jmmp3040083 - 29 Sep 2019
Cited by 1 | Viewed by 2713
Abstract
The wetting behavior in laser brazing can be designated as inconstant, caused largely by external process discontinuities such as the wire feeding. To reveal periodic melt pool propagation effects that occur during laser brazing of aluminum and for a better understanding of those [...] Read more.
The wetting behavior in laser brazing can be designated as inconstant, caused largely by external process discontinuities such as the wire feeding. To reveal periodic melt pool propagation effects that occur during laser brazing of aluminum and for a better understanding of those effects in laser brazing in general, this paper analyzes high-speed recordings of the brazing process with aluminum alloy. It is demonstrated that two main effects of periodic melt pool behavior in different frequency scales occur during the process, related directly to the wire feeding. Full article
(This article belongs to the Special Issue Laser-Based Manufacturing)
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14 pages, 4381 KiB  
Article
Influence of Magnesium on Spatter Behavior in Laser Deep Penetration Welding of Aluminum Alloys
by Andreas Felsing and Peer Woizeschke
J. Manuf. Mater. Process. 2019, 3(3), 71; https://doi.org/10.3390/jmmp3030071 - 15 Aug 2019
Cited by 3 | Viewed by 2687
Abstract
The quality of welds, as well as the necessity of post-processing, is challenged by spatter generation during the laser keyhole welding process. In this study, the influence of the magnesium content on spatter behavior is studied for three aluminum alloys (Al99.5, AlMg3, and [...] Read more.
The quality of welds, as well as the necessity of post-processing, is challenged by spatter generation during the laser keyhole welding process. In this study, the influence of the magnesium content on spatter behavior is studied for three aluminum alloys (Al99.5, AlMg3, and AlMg5). A synchronized dual high-speed camera system is used to observe the spatter behavior and to reconstruct 3D spatter trajectories as well as determine the characteristics of spatter velocity, flight path angle, and approximate spatter size. The mean spatter velocities and flight path angles of the welding experiments with the three alloys were in welding direction between 4.1 m/s and 4.6 m/s and 44.8° and 51.0°, respectively. Furthermore, the AlMg alloys show excessive spatter behavior with spray events of more than 50 spatters at a time, and less frequently spatter explosions. Spatter spray events show a character similar to spatter explosions. Volumetric evaporation is proposed as effecting these events. In contrast, and resulting from a different mechanism, pure aluminum (Al99.5) shows group ejection events with at least 10 spatters at a time. In this study, there are no correlations between spatter velocities and flight path angles, nor between velocities and approximate spatter sizes. Full article
(This article belongs to the Special Issue Laser-Based Manufacturing)
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