Laser Shock Microforming of Thin Metal Sheets

Ocaña Moreno, Jose Luis and Morales Furió, Miguel and García-Ballesteros Ramírez, Juan José and Porro González, Juan Antonio and Garcia Garcia, Oscar and Molpeceres Alvarez, Carlos Luis (2009). Laser Shock Microforming of Thin Metal Sheets. "Applied Surface Science", v. 255 (n. 10); pp. 5633-5636. ISSN 1875-3892.


Title: Laser Shock Microforming of Thin Metal Sheets
  • Ocaña Moreno, Jose Luis
  • Morales Furió, Miguel
  • García-Ballesteros Ramírez, Juan José
  • Porro González, Juan Antonio
  • Garcia Garcia, Oscar
  • Molpeceres Alvarez, Carlos Luis
Item Type: Article
Título de Revista/Publicación: Applied Surface Science
Date: March 2009
Volume: 255
Faculty: Centro Láser (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Continuous and long-pulse lasers have been used for the forming of metal sheets in macroscopic mechanical applications. However, for the manufacturing of micro-electromechanical systems (MEMS), the applicability of such type of lasers is limited by the long-relaxation-time of the thermal fields responsible for the forming phenomena. As a consequence of such slow relaxation, the final sheet deformation state is attained only after a certain time, what makes the generated internal residual stress fields more dependent on ambient conditions and might make difficult the subsequent assembly process from the point of view of residual stresses due to adjustment. The use of ns laser pulses provides a suitable parameter matching for the laser forming of an important range of sheet components used in MEMS that, preserving the short interaction time scale required for the predominantly mechanic (shock) induction of deformation residual stresses, allows for the successful processing of components in a medium range of miniaturization, particularly important according to its frequent use in such systems. In the present paper, a discussion is presented on the physics of laser shock microforming and the influence of the different effects on the net bending angle. The experimental setup used for the experiments, sample fabrication and experimental results of influence of number of laser pulses on the net bending angle are also presented.

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Item ID: 10168
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Deposited by: Memoria Investigacion
Deposited on: 30 Jan 2012 08:48
Last Modified: 20 Apr 2016 18:24
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