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Melt behavior on th...
Melt behavior on the keyhole front during high speed laser welding
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- Eriksson, Ingemar (author)
- Luleå tekniska universitet,Produkt- och produktionsutveckling
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- Powell, John (author)
- Luleå tekniska universitet,Institutionen för teknikvetenskap och matematik
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- Kaplan, Alexander F. H. (author)
- Luleå tekniska universitet,Produkt- och produktionsutveckling
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(creator_code:org_t)
- Elsevier BV, 2013
- 2013
- English.
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In: Optics and lasers in engineering. - : Elsevier BV. - 0143-8166 .- 1873-0302. ; 51:6, s. 735-740
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Abstract
Subject headings
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- The flow of molten metal on the front wall of a laser generated welding keyhole has been observed by high speed photography, optically measured by mapping the flow of ripples on the liquid surface and theoretically calculated. A clear downward flow can be observed and measured by a Particle Image Velocimetry algorithm. A theoretical calculation of the melt thickness on the keyhole front is also presented. Results indicate that the thickness of the liquid on the keyhole front is similar to that of the resolidified layer found in micrographs of the front if the laser is suddenly turned off. The measured surface ripple flow speeds are between two and four times as high as the theoretical average fluid flow rate.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
Keyword
- Laser keyhole welding
- PIV
- Melt flow
- High speed photography
- Produktionsutveckling
- Manufacturing Systems Engineering
Publication and Content Type
- ref (subject category)
- art (subject category)
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