New high-speed photography technique for observation of fluid flow in laser welding
2010 (English)In: Optical Engineering: The Journal of SPIE, ISSN 0091-3286, E-ISSN 1560-2303, Vol. 49, no 10Article in journal (Refereed) Published
Recent developments in digital high-speed photography allow us to directly observe the surface topology and flow conditions of the melt surface inside a laser evaporated capillary. Such capillaries (known as keyholes) are a central feature of deep penetration laser welding. For the first time, it can be confirmed that the liquid capillary surface has a rippled, complex topology, indicative of subsurface turbulent flow. Manipulation of the raw data also provides quantitative measurements of the vertical fluid flow from the top to the bottom of the keyhole.
Place, publisher, year, edition, pages
2010. Vol. 49, no 10
Research subject Manufacturing Systems Engineering; Experimental Mechanics
IdentifiersURN: urn:nbn:se:ltu:diva-8108DOI: 10.1117/1.3502567Local ID: 68f90290-e661-11df-8b36-000ea68e967bOAI: oai:DiVA.org:ltu-8108DiVA: diva2:980999
Validerad; 2010; Bibliografisk uppgift: Paper id:: 100503; 20101102 (ingeri)2016-09-292016-09-29Bibliographically approved