Results 11 to 20 of about 9,922,164 (241)

Interaction of laser radiation with urinary calculi [PDF]

open access: yes, 2009
Urolithias, calculus formation in the urinary system, affects 5 – 10% of the population and is a painful and recurrent medical condition. A common approach in the treatment of calculi is the use of laser radiation, a procedure known as laser ...
Mayo, M. E.
core   +7 more sources

Study of fundamental parameters in hybrid laser welding [PDF]

open access: yes, 2011
This thesis undertakes a study of laser welding in terms of basic laser material interaction parameters. This includes power density, interaction time and specific point energy.
Suder, Wojciech
core   +7 more sources

Possible explanations for different surface quality in laser cutting with 1 micron and 10 microns beams [PDF]

open access: yes, 2012
In laser cutting of thick steel sheets, quality difference is observed between cut surfaces obtained with 1 micron and 10 micron laser beams. This paper investigates physical mechanisms for this interesting and important problem of the wavelength ...
Remy Fabbro   +3 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

The development of a laser detonator system [PDF]

open access: yes, 2015
© Cranfield University, 2014Laser detonators offer several advantages over traditional electrical detonators, such as exploding bridgewire and slapper detonators, in terms of both safety and performance.
Bowden, M.
core   +7 more sources

Unresonant interaction of laser beams with microdroplets [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2012
The interaction of distilled water droplets (volumes of 3-4 µl) with pulsed laser beams emitted at 532 nm is described. At 532 nm the distilled water absorption is very low and the interaction of a water droplet with the laser radiation is dominated by ...
Pascu M. L.   +3 more
doaj   +1 more source

Material Reuse in Laser Powder Bed Fusion: Side Effects of the Laser—Metal Powder Interaction

open access: yesMetals, 2020
Metal additive manufacturing is changing the way in which engineers and designers model the production of three-dimensional (3D) objects, with rapid growth seen in recent years. Laser powder bed fusion (LPBF) is the most used metal additive manufacturing
Eleonora Santecchia   +2 more
doaj   +1 more source

Spatter Formation and Splashing Induced Defects in Laser-Based Powder Bed Fusion of AlSi10Mg Alloy: A Novel Hydrodynamics Modelling with Empirical Testing

open access: yesMetals, 2021
Powder spattering and splashing in the melt pool are common phenomena during Laser-based Powder Bed Fusion (LPBF) of metallic materials having high fluidity. For this purpose, analytical and computational fluid dynamics (CFD) models have been deduced for
Asif Ur Rehman   +6 more
doaj   +1 more source

Interaction of laser radiation with the material during production powders and fibers

open access: yesЛитьë и металлургия, 2021
The effect of laser radiation on a solid body leads to a change in the temperature field of the processed substance. The nature of heating, which is determined by the rate of change in temperature and temperature gradients, is different depending on the ...
Y. D. Chernichenko   +3 more
doaj   +1 more source

Revealing the effects of laser beam shaping on melt pool behaviour in conduction-mode laser melting

open access: yesJournal of Materials Research and Technology, 2023
Laser beam shaping offers remarkable possibilities to control and optimise process stability and tailor material properties and structure in laser-based welding and additive manufacturing.
Amin Ebrahimi   +5 more
doaj   +1 more source

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