Results 171 to 180 of about 8,453 (225)
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Surface tension stabilized laser welding (donut laser welding)—A new laser welding technique
Journal of Laser Applications, 2013A new laser welding process is presented which delivers a porosity free, spatter free weld. The process involves a donut shaped melt with a central hole of the same order of magnitude as the material thickness. The laser illuminates only the leading section of this melt. The hole is kept open by the melt surface tension.
Peter Haglund +3 more
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Naval Engineers Journal, 1981
ABSTRACTTechnological improvements in welding have proceeded at a slow pace usually brought about by incremental advances in techniques or materials. An opportunity is now being afforded the Navy to increase its welding technology by giant steps by utilizing the emerging technology of laser welding.
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ABSTRACTTechnological improvements in welding have proceeded at a slow pace usually brought about by incremental advances in techniques or materials. An opportunity is now being afforded the Navy to increase its welding technology by giant steps by utilizing the emerging technology of laser welding.
openaire +1 more source
Diode Laser Welding of Polyethylene
Polymer-Plastics Technology and Engineering, 2008A high-power diode laser (HPDL) was used to weld high-density polyethylene (HDPE) sheets. Laser-welded joints were fabricated with different values of laser power and scan speed. Hot-tool welding was also employed to fabricate joints to make a comparison between this consolidated technology and HPDL welding.
QUADRINI, FABRIZIO +2 more
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Journal of Dental Research, 1972
A neodymium glass laser was used to produce weld joints between test pieces of four different casting gold alloys. The mechanical properties of the welds were determined and their microstructures were evaluated. The results of this study indicate that laser welding of dental casting gold alloys is metallurgically feasible.
D L, Smith, A P, Burnett, T E, Gordon
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A neodymium glass laser was used to produce weld joints between test pieces of four different casting gold alloys. The mechanical properties of the welds were determined and their microstructures were evaluated. The results of this study indicate that laser welding of dental casting gold alloys is metallurgically feasible.
D L, Smith, A P, Burnett, T E, Gordon
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Laser Welding of Vesicovaginal Fistula
International Urogynecology Journal and Pelvic Floor Dysfunction, 2001The management of vesicovaginal fistula remains a source of debate, despite extensive literature on the subject. It is difficult to prove the superiority of one surgical technique over another by randomized trials, given the variabilities of fistula etiology, the location and clinician expertise.
Dogra, P. N., Nabi, G.
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Laser welding of titanium in dentistry
Acta Odontologica Scandinavica, 1988Unalloyed titanium of the quality used for osseointegrated implants by the method of Brånemark is also sometimes used for the metallic part of the prosthetic superstructure placed on the fixtures and for crowns and bridges of conventional type. Forty bars of titanium, 8 of ASTM B 348 grade-1 quality and 32 of ASTM B 348 grade-2 quality, were laser ...
G, Sjögren, M, Andersson, M, Bergman
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Medical device technology, 2002
A laser welding process has been developed that offers the advantages of conventional laser welding without the use of opaque materials or the addition of unwanted colour.
L P, Frieder, Gareth, McGrath
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A laser welding process has been developed that offers the advantages of conventional laser welding without the use of opaque materials or the addition of unwanted colour.
L P, Frieder, Gareth, McGrath
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Laser welding of thermoplastics: An overview on lasers, materials, processes and quality
Infrared Physics and Technology, 2021Martins C I, Maria Paiva
exaly
Higher-level laser parameters for weld dimensionsprediction in laser welding
Laser welding is an essential technology for many applications. However, due tothe complex non-linear interactions between parameters and the emergence ofweld defects, there are still many challenges in predicting the physical transfor-mations occuring during welding.Victor HAYOT +3 more
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