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Laser welding defects detection in automotive industry based on radiation and spectroscopical measurements

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Abstract

Laser welding is a common technique in the automotive industry. For economic reasons, it is of great importance to detect the defects that can appear. The CO2 penetration laser welding process is characterized by the formation of an electron-free plasma whose radiation can be measured to detect the defects. This paper presents two different approaches to defect detection. The first is based on the correlation between the power spectrum of a photodiode-generated signal and the defects. The second approach is based on the plasma electronic temperature, which is correlated to the presence of defects. Results obtained in an industrial facility under production conditions are presented.

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Author notes

  1. José M. Bernárdez

    Present address: Isend S.A. Parque Tecnológico de Boecillo, Valladolid, Spain

  2. Fernando Rodríguez

    Present address: Indal S.L. Crta. Arcas Reales s/n, Valladolid, Spain

Authors and Affiliations

  1. Fundación CARTIF, Parque Tecnológico de Boecillo, P205, 47151, Boecillo (Valladolid), Spain

    Sergio Saludes Rodil, Roberto Arnanz Gómez, José M. Bernárdez & Fernando Rodríguez

  2. Escuela Técnica Superior de Ingenieros Industriales, University of Valladolid, Paseo del Cauce s/n., 47011, Valladolid, Spain

    Luis J. Miguel & José R. Perán

Authors
  1. Sergio Saludes Rodil
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  2. Roberto Arnanz Gómez
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  3. José M. Bernárdez
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  4. Fernando Rodríguez
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  5. Luis J. Miguel
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  6. José R. Perán
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Correspondence to Sergio Saludes Rodil.

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Saludes Rodil, S., Arnanz Gómez, R., Bernárdez, J.M. et al. Laser welding defects detection in automotive industry based on radiation and spectroscopical measurements. Int J Adv Manuf Technol 49, 133–145 (2010). https://doi.org/10.1007/s00170-009-2395-y

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  • DOI: https://doi.org/10.1007/s00170-009-2395-y

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