Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Recent Results on Short Pulse Laser Microforming of Thin Metal Sheets
Year:2008
Research Areas
  • Mechanical engineering,
  • Naval engineering,
  • Construction materials
Information
Abstract
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 fieldsmore dependent on ambient conditions and mightmake 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 parametermatching for the laser forming of an important range of sheet components used in MEMS that, preserving the short interaction time scale required for the predominantlymechanic (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.
International
Si
Congress
M4PL-21. The annual Meetings on Mathematical Modelling of Materials Processing with Lasers
960
Place
Innsbruck/Igls (AUSTRIA)
Reviewers
Si
ISBN/ISSN
0000000000
Start Date
16/01/2008
End Date
18/01/2008
From page
1
To page
1
Transparencias
Participants
  • Autor: Miguel Morales Furio (UPM)
  • Autor: Carlos Luis Molpeceres Alvarez (UPM)
  • Autor: Juan José García-Ballesteros . (UPM)
  • Autor: Oscar Garcia Garcia (UPM)
  • Autor: Juan Antonio Porro Gonzalez (UPM)
  • Autor: Angel Garcia Beltran (UPM)
  • Autor: Jose Luis Ocaña Moreno (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
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