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Surface tension generated defects in full penetration laser keyhole welding
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
Luleå University of Technology, Department of Engineering Sciences and Mathematics.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.ORCID iD: 0000-0002-3569-6795
2014 (English)In: Journal of laser applications, ISSN 1042-346X, E-ISSN 1938-1387, Vol. 26, no 1, article id 12006Article in journal (Refereed) Published
Abstract [en]

During laser keyhole welding of thin plates the melt pool is relatively wide compared to the plate thickness. Under certain conditions an elongated keyhole can be created and a permanent hole is sometimes left in the weld seam. The generation of such holes is determined by surface tension effects in the melt which can generate a self sustaining geometry at the rear of the melt pool. The geometry of the shape is known as a catenoid and has clear geometrical limits.

Place, publisher, year, edition, pages
2014. Vol. 26, no 1, article id 12006
National Category
Manufacturing, Surface and Joining Technology
Research subject
Manufacturing Systems Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-4216DOI: 10.2351/1.4830175Local ID: 221fe57a-44b0-4f84-bf02-08f5236fd04eOAI: oai:DiVA.org:ltu-4216DiVA: diva2:977080
Note
Validerad; 2014; 20130416 (ingeri)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Eriksson, IngemarPowell, JohnKaplan, Alexander
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