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Prediction of penetration in one-sided fillet welds by in-process joint gap monitoring—an experimental study

Anna Ericson Öberg (Institutionen för material- och tillverkningsteknik, Tillverkningsteknik) ; Fredrik Sikström (Institutionen för signaler och system, Automation)
Welding in the World (0043-2288). Vol. 61 (2017), 3, p. 529–537.
[Artikel, refereegranskad vetenskaplig]

The challenge to predict variations in penetration depth in one-sided fillet welds during robotized gas metal arc welding has been addressed by a pilot investigation of technical possibilities and limitations. The main cause for the variation in penetration depth is considered to be variation in joint gap size. Special attention has been paid in order to adopt the experimental conditions to conform to industrial welding conditions. The employed method uses in-process monitoring of joint gap size together with an empirical model relating penetration depth to gap size in order to predict this depth. The gap size estimates are based on image information from two cameras, one visual and one infrared. The results, that are evaluated off-line, confirm the development of a real-time method providing technical solutions that are industrially tractable. The results also pinpoint areas of further improvements towards increased robustness and reduced estimation uncertainties.

Nyckelord: MAG welding Fillet welds Monitoring systems Penetration Prediction



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Denna post skapades 2017-06-28.
CPL Pubid: 250143

 

Institutioner (Chalmers)

Institutionen för material- och tillverkningsteknik, Tillverkningsteknik (2005-2017)
Institutionen för signaler och system, Automation (2005-2017)

Ämnesområden

Produktion
Hållbar utveckling
Produktionsteknik

Chalmers infrastruktur