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  2. Laser beam welding - Wikipedia

    en.wikipedia.org/wiki/Laser_beam_welding

    A robot performs remote fibre laser welding. Laser beam welding (LBW) is a welding technique used to join pieces of metal or thermoplastics through the use of a laser.The beam provides a concentrated heat source, allowing for narrow, deep welds and high welding rates.

  3. List of African countries by GDP (nominal) - Wikipedia

    en.wikipedia.org/wiki/List_of_African_countries...

    Countries in Africa are sorted according to data from the International Monetary Fund. [1] The figures presented here do not take into account differences in the cost of living in different countries, and the results can vary greatly from one year to another based on fluctuations in the exchange rates of the country's currency. [2]

  4. List of terrestrial fibre optic cable projects in Africa

    en.wikipedia.org/wiki/List_of_terrestrial_fibre...

    MTN Group Nigeria Multi-Links Purchased by Helios in 2011; at this time, Multi-Links had a terrestrial fibre optic network spanning 8,232 km in Nigeria. [54] [55] [56] NITEL: Orange S.A. [23] Phase3 Telecom: In 2011, Phase3 were building the West Africa One network, an aerial optic fibre transmission system which runs from Nigeria to Benin and ...

  5. Fiber laser - Wikipedia

    en.wikipedia.org/wiki/Fiber_laser

    A fiber laser (or fibre laser in Commonwealth English) is a laser in which the active gain medium is an optical fiber doped with rare-earth elements such as erbium, ytterbium, neodymium, dysprosium, praseodymium, thulium and holmium. They are related to doped fiber amplifiers, which provide light amplification without lasing.

  6. Laser-hybrid welding - Wikipedia

    en.wikipedia.org/wiki/Laser-hybrid_welding

    Laser-hybrid welding is a type of welding process that combines the principles of laser beam welding and arc welding. [ 1 ] The combination of laser light and an electrical arc into an amalgamated welding process has existed since the 1970s, but has only recently been used in industrial applications.

  7. Laser welding of polymers - Wikipedia

    en.wikipedia.org/wiki/Laser_welding_of_polymers

    Direct laser welding of polymers. Similar to laser welding of metals, in direct laser welding the surface of the polymer is heated to create a melt zone that joins two components together. This approach can be used to create butt joints and lap joints with complete penetration. Laser wavelengths between 2 and 10.6 μm are used for this process ...

  8. Laser - Wikipedia

    en.wikipedia.org/wiki/Laser

    Lasers are used in fiber-optic and free-space optical communications, optical disc drives, laser printers, barcode scanners, semiconductor chip manufacturing (photolithography, etching), laser surgery and skin treatments, cutting and welding materials, military and law enforcement devices for marking targets and measuring range and speed, and ...

  9. Weld quality assurance - Wikipedia

    en.wikipedia.org/wiki/Weld_quality_assurance

    Inline coherent imaging (ICI) is a recently developed interferometric technique based on optical coherence tomography [8] that is used for quality assurance of keyhole laser beam welding, a welding method that is gaining popularity in a variety of industries. ICI aims a low-powered broadband light source through the same optical path as the ...