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Träfflista för sökning "WFRF:(Grönlund Rasmus) ;spr:eng;conttype:(refereed);pers:(Larsson A)"

Sökning: WFRF:(Grönlund Rasmus) > Engelska > Refereegranskat > Larsson A

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  • Bengtsson, Magnus, et al. (författare)
  • Fungus covered insulator materials studied with laser-induced fluorescence and principal component analysis
  • 2005
  • Ingår i: Applied Spectroscopy. - : SAGE Publications. - 0003-7028 .- 1943-3530. ; 59:8, s. 1037-1041
  • Tidskriftsartikel (refereegranskat)abstract
    • A method combining laser-induced fluorescence and principal component analysis to detect and discriminate between algal and fungal growth on insulator materials has been studied. Eight fungal cultures and four insulator materials have been analyzed. Multivariate classifications were utilized to characterize the insulator material, and fungal growth could readily be distinguished from a clean surface. The results of the principal component analyses make it possible to distinguish between algae infected, fungi infected, and clean silicone rubber materials. The experiments were performed in the laboratory using a fiber-optic fluorosensor that consisted of a nitrogen laser and an optical multi-channel analyzer system.
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3.
  • Bengtsson, Magnus, et al. (författare)
  • Remote laser-induced breakdown spectroscopy for the detection and removal of salt on metal and polymeric surfaces
  • 2006
  • Ingår i: Applied Spectroscopy. - : SAGE Publications. - 1943-3530 .- 0003-7028. ; 60:10, s. 1188-1191
  • Tidskriftsartikel (refereegranskat)abstract
    • The detection of contamination such as salt in outdoor high-voltage insulator systems and its subsequent removal are vital for a reliable transmission of electric power. Remote detection of salt on a copper metal surface was carried out by using a mobile laser-induced breakdown spectroscopy (LIBS) Lidar system with a laser wavelength of 355 nm. Detection of salt on a polymeric high-voltage insulator was obtained when an additional lens was inserted into the beam path, and the number of photons that was detected could be calculated by using a calibrated white light source. Ablative cleaning could readily be carried out with LIBS and was verified by observing the disappearance of the sodium D-line emission.
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