Application of Time-Frequency Methods for Assessment of Gas Metal Arc Welding Condition

Górka, Jacek; Jamrozik, Wojciech

doi:10.1007/978-3-319-96601-4_12

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2020

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“…According to that, the wrong connection of wires, which can lead to polarity change, is highly unwanted and should be avoided by welders. In particular, unexperienced welders are vulnerable to making such mistakes [5][6][7]. An electric arc is an electric discharge in an atmosphere of highly ionized gases and metal vapors.…”

Section: Introductionmentioning

confidence: 99%

Assessing MMA Welding Process Stability Using Machine Vision-Based Arc Features Tracking System

Jamrozik

Górka

2020

Sensors

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Arc length is a crucial parameter of the manual metal arc (MMA) welding process, as it influences the arc voltage and the resulting welded joint. In the MMA method, the process’ stability is mainly controlled by the skills of a welder. According to that, giving the feedback about the arc length as well as the welding speed to the welder is a valuable property at the stage of weld training and in the production of welded elements. The proposed solution is based on the application of relatively cheap Complementary Metal Oxide Semiconductor (CMOS) cameras to track the welding electrode tip and to estimate the geometrical properties of welding arc. All measured parameters are varying during welding. To validate the results of image processing, arc voltage was measured as a reference value describing in some part the process stability.

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Section: Introductionmentioning

confidence: 99%