Analysis of plasma thermal surface effects on the residual stress field induced by LSP in Al2024-t351

Morales Furió, Miguel and Porro González, Juan Antonio and Molpeceres Álvarez, Carlos Luis and Holgado Bolaños, Miguel and Ocaña Moreno, José Luis (2010). Analysis of plasma thermal surface effects on the residual stress field induced by LSP in Al2024-t351. "Journal of Optoelectronics and Advanced Materials", v. 12 (n. 3); pp. 718-722. ISSN 1454-4164.

Description

Title: Analysis of plasma thermal surface effects on the residual stress field induced by LSP in Al2024-t351
Author/s:
  • Morales Furió, Miguel
  • Porro González, Juan Antonio
  • Molpeceres Álvarez, Carlos Luis
  • Holgado Bolaños, Miguel
  • Ocaña Moreno, José Luis
Item Type: Article
Título de Revista/Publicación: Journal of Optoelectronics and Advanced Materials
Date: March 2010
ISSN: 1454-4164
Volume: 12
Subjects:
Freetext Keywords: Plasma, Laser shock processing, Surface treatment, Shock waves, Residual stress, Numerical modeling
Faculty: E.T.S.I. Industriales (UPM)
Department: Física Aplicada a la Ingeniería Industrial [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

In Laser Shock Processing (LSP) a high intensity pulsed laser beam is focused at the interface between a metallic target and a transparent confining material (normally water) that induces a residual stress distribution in the target material. Without a protective coating thermal effects are present near the target surface. A calculational model has been developed, able to systematically study LSP processes, starting from laser-plasma interaction and coupled thermo-mechanical target behavior. We present results obtained in LSP treatments without coating. In particular the relative influence of thermal/mechanical effects shows that: each effect has a different temporal scale and thermal effects are limited to a small region near the surface; repeated pulses increase maximum compressive residual stress and the depth of the compressive residual stress region; compressive residual stresses very close to the surface level can be induced even without any protective coating through the application of adjacent pulses.

More information

Item ID: 7048
DC Identifier: http://oa.upm.es/7048/
OAI Identifier: oai:oa.upm.es:7048
Official URL: http://www.inoe.ro/Journal.html
Deposited by: Memoria Investigacion
Deposited on: 26 May 2011 10:19
Last Modified: 21 Aug 2017 11:42
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