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Automatic detection of burn-through in GMA welding using a parametric model
Luleå tekniska universitet.
Luleå tekniska universitet.
1996 (English)In: Mechanical systems and signal processing, ISSN 0888-3270, E-ISSN 1096-1216, Vol. 10, no 5, 633-651 p.Article in journal (Refereed) Published
Abstract [en]

This paper addresses the problem of automatic detection of burn-through in weld joints. Gas metal arc (GMA) welding with pulsed current is used, and welding voltage and current are recorded. As short-circuitings are common between the welding electrode and the work piece during burn-through, a short-circuit detector is developed to detect these events. To detect another specific characteristic of burn-through - this detector is combined with a square-law detector. This second detector is based on a non-linear modification of an autoregressive model with extra input (ARX-model) of the welding process. The results obtained from this compound detector indicate that it is possible to detect burn-through in the welds automatically. The work also indicates that it is possible to design an on-line monitoring system for robotic GMA welding.

Place, publisher, year, edition, pages
1996. Vol. 10, no 5, 633-651 p.
National Category
Signal Processing
Research subject
Signal Processing
Identifiers
URN: urn:nbn:se:ltu:diva-6291DOI: 10.1006/mssp.1996.0043Local ID: 480f4b10-df03-11dc-99e3-000ea68e967bOAI: oai:DiVA.org:ltu-6291DiVA: diva2:979168
Note
Godkänd; 1996; 20080219 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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