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Sökning: WFRF:(Grönlund Rasmus) > Engelska > Chalmers tekniska högskola

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1.
  • Bengtsson, Magnus, et al. (författare)
  • Fluorescence lidar imaging of fungal growth on high-voltage outdoor composite insulators
  • 2005
  • Ingår i: Optics and Lasers in Engineering. - : Elsevier BV. - 0143-8166 .- 1873-0302. ; 43:6, s. 624-632
  • Tidskriftsartikel (refereegranskat)abstract
    • Remote fluorescence imaging of fungal growth on polymeric high-voltage insulators was performed using a mobile lidar system with a laser wavelength of 355 nm. Insulator areas contaminated by fungal growth could be distinguished from clean surfaces and readily be imaged. The experiments were supported by detailed spectral studies performed in laboratory using a fibre-optic fluorosensor incorporating an optical multi-channel analyser system (OMA) and a nitrogen laser emitting radiation at 33 7 nm.
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2.
  • Dernfalk, Andreas, 1975, et al. (författare)
  • Laser-induced fluorescence spectroscopy for detection of biological contamination on composite insulators
  • 2003
  • Ingår i: In Proc. 13th International Symposium on High Voltage Engineering, Delft, Netherlands.
  • Konferensbidrag (refereegranskat)abstract
    • A new technique for remote detection of biological contamination on high-voltage outdoor insulators has been investigated. The technique, which is based on laser-induced fluorescence (LIF) spectroscopy, has been applied to study surfaces of real silicon rubber insulators from a distance of approximately 60 m. Measurements were performed outdoors on a number of clean, as well as, biologically contaminated insulators. Several types of biological contamination were included, as five of the studied insulators had become covered when installed in Sweden, and another three had been contaminated by fungal growth in laboratory. Fluorescence spectra obtained from the surfaces of the described insulators are presented and the applicability of the technique is discussed and compared with photographic methods.
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