Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Nanosecond Laser Shock Microforming of Thin Metal Components
Year:2008
Research Areas
  • Mechanical engineering,
  • Naval engineering,
  • Construction materials
Information
Abstract
Laser shock microforming is conceived as a non-thermal laser forming method based on the high intensity laser induced shock waves capability to modify the tensional state of thin targets. The technique has the advantages of laser thermal forming (non-contact, tool-free and high precision), but, additionally, its minimally thermal character allows the preservation and improvement of me-chanical material properties by inducing appropriate residual stress fields. In particular, the induc-tion of compressive residual stress fields on the target surface is a desirable feature introducing ad-ditional protection of the formed parts against corrosion and fatigue crack propagation. 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 but 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
9th International Symposium on Laser Precision Microfabrication. LPM08
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: Jose Luis Ocaña Moreno (UPM)
  • Autor: Juan José García-Ballesteros . (UPM)
  • Autor: Carlos Luis Molpeceres Alvarez (UPM)
  • Autor: Juan Antonio Porro Gonzalez (UPM)
  • Autor: Miguel Morales Furio (UPM)
  • Autor: Oscar Garcia Garcia (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
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