Memorias de investigación
Research Publications in journals:
Experimental Determination of Electronic Density and Temperature in Water-Confined Plasmas Generated by Laser Shock Processing
Year:2019

Research Areas
  • Physics chemical and mathematical,
  • Mechanical aeronautics and naval engineering

Information
Abstract
Laser Shock Processing (LSP) is based on focusing a pulse of a high energy laser (I > 109 W/cm2, ? < 50 ns) over a piece of metal. It results in the instantaneous vaporization of the piece?s surface and the generation of a high temperature and density plasma composed of the di erent ionized species of elements present in the piece and in the atmosphere. The high pressure of the plasma generates a shock wave that propagates to the piece, which a ects its mechanical characteristics. Today, LSP is a consolidated alternative for improving the surface properties of metal alloys. This technique has been studied since the 1960s, when Askar?yan and Moroz [1] discovered that a high-energy laser pulse produces backpressures in the surface of the metal material on which the laser is focused (target). In Fairand et al. [2] it was found that laser shocking induced a tangled dislocation substructure similar to explosively shocked aluminum. The stress waves were studied using the piezoelectric response of X-cut quartz-crystal disks by Yang [3]. Since then, numerous works have aimed at finding the best conditions in which the technique should be applied. In 1990, Fabbro et al. [4] quantitatively described the evolution of the plasma in a LSP experiment under confined geometry using di erent characteristic plasma-dynamics stages, including plasma pressure buildup, plasma development under the laser irradiation, and final plasma expansion until the pressure decreases and it is too low to cause plastic deformation in the material. An explanation of this phenomenon was given by Berthe et al. [5].
International
Si
JCR
Si
Title
Metals
ISBN
2075-4701
Impact factor JCR
1,704
Impact info
Datos JCR del año 2017
Volume
9
10.3390/met9070808
Journal number
7
From page
808
To page
822
Month
JULIO
Ranking
Participants

Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Diseño y fabricación industrial
  • Grupo de Investigación: Grupo de Investigación en Ingeniería y Aplicaciones del Láser
  • Grupo de Investigación: Análisis y Caracterización Óptica de Materiales
  • Departamento: Ingeniería Eléctrica, Electrónica Automática y Física Aplicada