Author： Bebiano Daniel Alfaro Sadek C. A.
Publisher： MDPI
E-ISSN： 1424-8220|9|4|2851-2861
ISSN： 1424-8220
Source： Sensors, Vol.9, Iss.4, 2009-04, pp. : 2851-2861
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
Improved product quality and production methods, and decreased production costs are important objectives of industries. Welding processes are part of this goal. There are many studies about monitoring and controlling welding process. This work presents a non-intrusive on-line monitoriment system and some algorithms capable of detecting GTAW weld defects. Some experiments were made to simulate weld defects by disturbing the electric arc. The data comes from a spectrometer which captures perturbations on the electric arc by the radiation emission of chosen lines. Algorithms based on change detection methods are used to indicate the presence and localization of those defects.
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