Experimental observations of the laser keyhole welding process of AA5182

B.J. Aalderink, R.G.K.M. Aarts, J.B. Jonker, J. Meijer

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

4 Citations (Scopus)
66 Downloads (Pure)

Abstract

Monitoring systems for the laser keyhole welding process of aluminium Tailor Welded Blanks, are in many cases vital to ensure a certain weld quality. Especially process visualization with camera based systems gives a lot of insight. Although for steel it has already been demonstrated that images can be obtained in real-time from the laser welding process using these cameras based on silicon chips, for aluminium this turns out to be not so easy. The light emitted by the weld plume hides the weld pool from the coaxially mounted camera.
In this paper recent experiments are discussed in which a monitoring system is used, that is composed of low cost standard components, to visualize the CW Nd:YAG laser keyhole welding process of AA5182. This monitoring system utilizes a diode laser to illuminate the welding process, combined with an optical interference filter and a CMOS camera. In this way the monitoring system is not over-radiated by the optical emissions of the sample material. It proved to be possible to eliminate the influence of the light emitted by the weld plume on the image and to detect the melt pool. Future efforts will focus on visualizing the keyhole in these images.
Original languageEnglish
Title of host publicationICALEO 2005
Subtitle of host publication24th International Congress on Applications of Lasers & Electro-Optics, October 31-November 3, Hyatt Regency Miami, Miami, Florida, USA
EditorsAndreas Ostendorf, Anthony Hoult, Yongfeng Lu
Place of PublicationMiami, FL, USA
PublisherLaser Institute of America
Pages832-836
Number of pages5
ISBN (Print)0-912035-82-X
DOIs
Publication statusPublished - 31 Oct 2005
Event24th International Congress on Applications of Lasers & Electro-Optics, ICALEO 2005 - Miami, United States
Duration: 31 Oct 20053 Nov 2005
Conference number: 24

Conference

Conference24th International Congress on Applications of Lasers & Electro-Optics, ICALEO 2005
Abbreviated titleICALEO
CountryUnited States
CityMiami
Period31/10/053/11/05

Keywords

  • METIS-224871
  • IR-52896

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    Aalderink, B. J., Aarts, R. G. K. M., Jonker, J. B., & Meijer, J. (2005). Experimental observations of the laser keyhole welding process of AA5182. In A. Ostendorf, A. Hoult, & Y. Lu (Eds.), ICALEO 2005: 24th International Congress on Applications of Lasers & Electro-Optics, October 31-November 3, Hyatt Regency Miami, Miami, Florida, USA (pp. 832-836). Miami, FL, USA: Laser Institute of America. https://doi.org/10.2351/1.5060448