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Single-pulse Conduction Limited Laser Welding Using A Diffractive Optical Element
TWI Ltd., Granta Park, Great Abington, Cambridge .
TWI Ltd., Granta Park, Great Abington, Cambridge .
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Produkt- och produktionsutveckling.ORCID-id: 0000-0002-9010-1555
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Produkt- och produktionsutveckling.ORCID-id: 0000-0002-3569-6795
Vise andre og tillknytning
Rekke forfattare: 62016 (engelsk)Inngår i: Physics Procedia, ISSN 1875-3892, E-ISSN 1875-3892, Vol. 83, s. 1217-1222Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Conduction limited laser welding is commonly used in electronic and battery applications, where a high width-to-depth ratio weld is desirable. A laser beam with Gaussian or top-hat distributions is often used to produce conduction limited spot welds. Both these energy distributions result in a higher proportion of the laser beam energy being introduced towards the centre of the welded spot and consequently, a reduced penetration weld towards the circumference of the beam spot. The use of diffractive optical elements to tailor the energy distribution of the laser beam has been evaluated. An incident laser beam with an energy distribution in the shape of a ring or C-shape was projected onto the material, which results in heat propagating towards the centre, producing a shallow weld with a consistent depth of penetration across the entire overlapped joint. The results confirmed a corresponding thermal model which predicted an even distribution of heat at the joint interface

sted, utgiver, år, opplag, sider
2016. Vol. 83, s. 1217-1222
HSV kategori
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Produktionsutveckling
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URN: urn:nbn:se:ltu:diva-59732DOI: 10.1016/j.phpro.2016.08.128ISI: 000387459400132Scopus ID: 2-s2.0-84994012277OAI: oai:DiVA.org:ltu-59732DiVA, id: diva2:1036441
Konferanse
9th International Conference on Photonic Technologies Proceedings of the LANE 2016 September 19-22, 2016 Fürth, Germany
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Tilgjengelig fra: 2016-10-13 Laget: 2016-10-13 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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