Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Numerical Simulation of Plasma Dynamics in Laser Shock Processing Experiments
Year:2008
Research Areas
  • Construction materials
Information
Abstract
Laser Shock Processing (LSP) is based on the application of a high intensity pulsed Laser beam (I > 1 GW/cm2; ô < 50 ns) at the interface between the metallic target and the surrounding medium (a transparent confining material, normally water) forcing a sudden vaporization of the metallic sur-face into a high temperature and density plasma that immediately develops inducing a shock wave propagating into the material. The shock wave induces plastic deformation and a residual stress dis-tribution in the target material. Laser shock processing is being considered as a competitive alternative technology to classical treatments for improving fatigue, corrosion cracking and wear resistance of metallic materials. The description of the relevant laser absorption phenomena becomes hardly complicated because of the non-linear effects appearing along the interaction process and which significantly alter the shocking dynamics. A calculational model (SHOCKLAS) dealing with the main aspects of the process modelling in a coupled way has been developed by the authors. In this paper the study will be centred on the simu-lation of the hydrodynamic phenomenology arising from plasma expansion between the confine-ment layer and the base material using HELIOS (1-D radiation-hydrodynamics lagrangean fluid-dynamics code). This code is used to study plasma dynamics under laser shock processing condi-tions. The influence of the confining layer (medium and thickness) on plasma pressure is also stud-ied.
International
Si
Congress
9th International Symposium on Laser Precision Microfabrication
960
Place
QUEBEC (CANADA)
Reviewers
Si
ISBN/ISSN
0000000000
Start Date
16/06/2008
End Date
20/06/2008
From page
1
To page
6
Proceedings of LPM2008
Participants
  • Autor: Juan Antonio Porro Gonzalez (UPM)
  • Autor: Angel Garcia Beltran (UPM)
  • Autor: Jose Luis Ocaña Moreno (UPM)
  • Autor: Miguel Morales Furio (UPM)
  • Autor: Carlos Luis Molpeceres Alvarez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Ingeniería y Aplicaciones del Láser
  • Centro o Instituto I+D+i: Centro Laser
  • Departamento: Física Aplicada a la Ingeniería Industrial
  • Departamento: Automática, Ingeniería Electrónica e Informática Industrial
  • Grupo de Investigación: Ciencias de la Computación en la Educación y en la Representación del Conocimiento
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)