Automatic Detection of Burn-through in GMA Welding Using a Parametric Model
| Document type: | Journal Articles |
|---|---|
| Article type: | Original article |
| Peer reviewed: | Yes |
| Author(s): | Stefan Adolfsson, Klas Ericson, Anders Grennberg |
| Title: | Automatic Detection of Burn-through in GMA Welding Using a Parametric Model |
| Journal: | Mechanical Systems & Signal Processing |
| Year: | 1996 |
| Volume: | 10 |
| Issue: | 5 |
| Pagination: | 633-651 |
| ISSN: | 0888-3270 |
| Publisher: | Academic Press |
| City: | London |
| ISI number: | A1996VP07600009 |
| Organization: | Blekinge Institute of Technology |
| Department: | Dept. of Signal Processing (Institutionen för signalbehandling) Dept. of Signal Processing S-372 25 Ronneby +46 455 780 00 http://www.hk-r.se/isb/isb_en.html |
| Authors e-mail: | Stefan.Adolfsson@isb.hk-r.se |
| Language: | English |
| Abstract: | 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. |
| Subject: | Signal Processing\Detection and Classification |
| Note: | Published in issue October |
