Results 21 to 30 of about 1,179,836 (177)

Influence of a pulsed laser regime on surface finish induced by thedirect metal deposition process on a Ti64 alloy [PDF]

open access: yes, 2014
tThe direct metal deposition (DMD) laser technique is a free-form metal deposition process, which allowsgenerating a prototype or small series of near net-shape structures.
GORNY, Cyril   +7 more
core   +1 more source

Measurement of laser absorptivity for operating parameters characteristic of laser drilling regime [PDF]

open access: yes, 2008
Publisher version : http://iopscience.iop.org/0022-3727/41/15/155502/Laser drilling in the percussion regime is commonly used in the aircraft industry to drill sub-millimetre holes in metallic targets.
SCHNEIDER, Matthieu   +3 more
core   +1 more source

Temperature measurement inside and near the weld pool during laser welding [PDF]

open access: yes, 1999
The work in this article deals with the measurement of temperature fields inside and near the weld pool during laser welding. The laser source used for this study is a 7.5 kW CO2 laser, and the welded material is a UNS N08904 austenitic stainless steel ...
J. Quesada   +9 more
core   +1 more source

Excimer laser treatment of ZE41 magnesium alloy for corrosion resistance and microhardness improvement [PDF]

open access: yes, 2010
We would like to acknowledge the financial support of the ‘‘Conseil regional de PACA’’ and Protection des Metaux d’Arenc). The authors are grateful to PMA’s engineers Ms. E. Castellan, Ms. A. Gonthier and Mr. F.
KHALFAOUI, Walid   +3 more
core   +1 more source

Influence of various process conditions on surface finishes induced by the direct metal deposition laser technique on a Ti–6Al–4V alloy [PDF]

open access: yes, 2012
The direct metal deposition (DMD) with laser is a free-form metal deposition process for manufacturing dense pieces, which allows generating a prototype or small series of near net-shape structures. One of the most critical issues is that produced pieces
GORNY, Cyril   +7 more
core   +1 more source

A fast method for morphological analysis of laser drilling holes [PDF]

open access: yes, 2010
Version éditeur : http://jla.aip.org/resource/1/jlapen/v22/i4/p127_s1?isAuthorized=noThis paper presents an original method for analyzing laser drilled holes.
SCHNEIDER, Matthieu   +7 more
core   +1 more source

Laser adhesion test for thermal sprayed coatings on textured surface by laser [PDF]

open access: yes, 2016
The laser shock adhesion test (LASAT) is a technique allowing the generation of high tensile stresses in materials. The LASAT consists in focusing a pulsed laser beam on a water-confined target.
BOUSTIE, Michel   +15 more
core   +1 more source

Experimental investigation of hydrodynamics of melt layer during laser cutting of steel [PDF]

open access: yes, 2011
In laser cutting process, understanding of hydrodynamics of melt layer is significant, because it is an important factor which controls the final quality. In this work, we observed hydrodynamics of melt layer on kerf front in the case of laser cutting of
Remy Fabbro   +3 more
core   +1 more source

Gas investigation for laser drilling [PDF]

open access: yes, 2007
Version éditeur : http://jla.aip.org/resource/1/jlapen/v19/i3/p165_s1?isAuthorized=noThis article deals with the gas effect on percussion laser drilling in ms pulse duration range.
SCHNEIDER, Matthieu   +9 more
core   +1 more source

Parallel evolution of arborescent carrots (Daucus) in Macaronesia

open access: yesAmerican Journal of Botany, Volume 107, Issue 3, Page 394-412, March 2020., 2020
Premise Despite intensive research, the pathways and driving forces behind the evolution of derived woodiness on oceanic islands remain obscure. The genus Daucus comprises mostly herbs (therophytes, hemicryptophytes) with few rosette treelets (chamaephytes) endemic to various Macaronesian archipelagos, suggesting their independent evolution.
Kamil E. Frankiewicz   +9 more
wiley   +1 more source

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