Optical emissions from weld arcs and their effects on the performance of welding robot vision systems

Alan L. Lenef, Chester S. Gardner

Research output: Contribution to journalArticlepeer-review

Abstract

The design and operation of one-pass arc welding robot vision systems are greatly complicated by the presence of the bright weld arc and the harsh welding environment. In this paper we present absolute intensity measurements of weld arc spectra at visible and near-IR wavelengths using Ar-C>2 shield gas with solid wire and CO2 shield gas with flux-core wire. These measurements reveal the existence of many strong emission lines in the weld arc spectrum. The intense arc interference can be avoided by appropriately choosing the operating wavelength and by using a narrowband interference filter to prevent most of the arc radiation from. reaching the detector of the vision system camera.

Original languageEnglish (US)
Pages (from-to)2587-2595
Number of pages9
JournalApplied Optics
Volume24
Issue number16
DOIs
StatePublished - Aug 15 1985

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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