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Automatic Detection of Burn-through in GMA Welding Using a Parametric Model
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1996 (Engelska)Ingår i: Mechanical Systems & Signal Processing, ISSN 0888-3270 , Vol. 10, nr 5, s. 633-651Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

This paper addresses the problem of automatic detection of burn-through in weld joints. Gas metal are (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-a broadband long-lasting voltage component-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.

Ort, förlag, år, upplaga, sidor
London: Academic Press , 1996. Vol. 10, nr 5, s. 633-651
Nationell ämneskategori
Signalbehandling
Identifikatorer
URN: urn:nbn:se:bth-9958ISI: A1996VP07600009Lokalt ID: oai:bth.se:forskinfo62DC2C0867616961C12568A3002CAA14OAI: oai:DiVA.org:bth-9958DiVA, id: diva2:837958
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Published in issue OctoberTillgänglig från: 2012-09-18 Skapad: 2000-03-15 Senast uppdaterad: 2015-06-30Bibliografiskt granskad

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