Process control of stainless steel laser welding using an optical spectroscopie sensor

A.R. Konuk, Ronald G.K.M. Aarts, Bert Huis in 't Veld, T. Sibillano, D. Rizzi, A. Ancona

Research output: Contribution to journalArticleAcademicpeer-review

25 Citations (Scopus)
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Abstract

The in-process monitoring and real-time control of the penetration depth during laser welding is evaluated. An optical collimator collects the optical emission for measurement with a fast spectrometer. The sensor data are used to calculate the electron temperature and subsequently to determine the weld quality of overlap welds in AISI 304 stainless steel sheets performed both with CW Nd:YAG and CO2 lasers. A PI-controller adjusts the laser power aiming at a constant penetration depth and has been tested for Nd:YAG laser welding. Optical inspection of the weld verifies the results obtained with the proposed closed-loop system of spectroscopic sensor and controller.
Original languageEnglish
Pages (from-to)744-751
JournalPhysics procedia
Volume12
Issue numberPart A
DOIs
Publication statusPublished - 23 May 2011
EventSixth International WLT Conference on Lasers in Manufacturing 2011 - München, Germany
Duration: 23 May 201126 May 2011
Conference number: 6

Keywords

  • METIS-277157
  • IR-90464

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