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Št. zadetkov: 6
Drop on demand generation from a metal wire by means of an annular laser beam
Edvard Govekar, Alexander Kuznetsov, Anže Jerič
Izvirni znanstveni članek
Oznake: droplet generation;drop-on-demand;metal wire;annular laser beam;
In the paper a novel system for drop-on-demand (DoD) generation from a metal wire is presented, whose main component is a newly developed laser droplet generation head, consisting of annular laser beam shaping optics and a wire feeding system. In the pendant droplet formation phase of the DoD genera ...
Leto: 2016 Vir: Fakulteta za strojništvo (UL FS)
Nonlinear phenomena and dynamics of annular laser beam metal droplet generation
Edvard Govekar, Alexander Kuznetsov, Andrej Jeromen
Objavljeni znanstveni prispevek na konferenci (vabljeno predavanje)
Oznake: kovinske kapljice;anularni laserski snop;ločitev kapljice;nelinearna dinamika;stabilnost;metal droplets;annular laser beam;droplet detachment;nonlinear dynamics;stability;
Nonlinear phenomena and dynamics of annular laser beam metal droplet generation
Leto: 2015 Vir: Fakulteta za strojništvo (UL FS)
Annular laser beam based direct metal deposition
Edvard Govekar, Andrej Jeromen, Alexander Kuznetsov, Matjaž Kotar, Masaki Kondo
Objavljeni znanstveni prispevek na konferenci (vabljeno predavanje)
Oznake: annular laser beam;direct metal deposition;process stability;
The paper provides a description of a direct annular laser beam based metal deposition head, which makes use of axial material feeding and variation of the laser beam intensity distribution (LBID) on the surface of the workpiece. The application and advantages of the developed head are presented by ...
Leto: 2018 Vir: Fakulteta za strojništvo (UL FS)
Annular laser beam cladding process feasibility study
Alexander Kuznetsov, Andrej Jeromen, Gideon Levy, Makoto Fujishima, Edvard Govekar
Objavljeni znanstveni prispevek na konferenci
Oznake: kolobarjasti laserski žarki;navarjanje prahu;procesni parametri;izkoristek prahu;annular laser beams;powder cladding;process parameters;powder catchment efficiency;
In the paper a novel annular "ring shaped" laser beam cladding head and related cladding process are presented. In the cladding head a laser beam is shaped into an annular ring and guided coaxially with the powder tube disposing the powder jet in the centre of the focused annular laser beam ring. An ...
Leto: 2016 Vir: Fakulteta za strojništvo (UL FS)
High-speed camera thermometry of laser droplet generation
Benjamin Bizjan, Alexander Kuznetsov, Andrej Jeromen, Edvard Govekar, Brane Širok
Izvirni znanstveni članek
Oznake: laser droplet generation;temperature measurement;high-speed camera;melting;droplet detachment;fluid dynamics;
This paper presents a high-speed thermal imaging method using a visible light camera, with application to the laser droplet generation process (LDG). In the experiment, a nickel wire-end was exposed to a collimated laser beam, and the subsequent process of wire melting, pendant droplet formation and ...
Leto: 2017 Vir: Fakulteta za strojništvo (UL FS)
Study of an annular laser beam based axially-fed powder cladding process
Edvard Govekar, Andrej Jeromen, Alexander Kuznetsov, Gideon N. Levy, Makoto Fujishima
Izvirni znanstveni članek
Oznake: additive manufacturing;lasers;powder;
An annular laser beam based powder cladding head, which enables an axial powder feeding and variation of the laser beam intensity distribution (LBID) on the workpiece surface is presented. The influence of typical LBIDs, including Ring, Tophat(-), Tophat(+), and Gaussian-like, on a cladding process ...
Leto: 2018 Vir: Fakulteta za strojništvo (UL FS)
Št. zadetkov: 6
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