Nondestructive cross evaluations of iron-based material have been investigated by Ar-laser speckle interferometry for precise deformation detection down to 1 micron range and by magnetic sensors for observations of internal material degradations. The absolute values of local residual stresses were successfully evaluated by observing magnetic noises, independently of the lift-off distance of the pick-up coil to the sample surface or geometry around a sample. The relative degradation at each position was also evaluated by a leakage flux distribution by a GaAs Hall sensor over a sample surface with a high resolution of 0.2 mm for a strain range between 0.1% and 16%.


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    Titel :

    Nondestructive cross evaluation of materials


    Weitere Titelangaben:

    Zerstörungsfreie Bewertung von Werkstoffquerschnitten


    Beteiligte:
    Yamada, K. (Autor:in) / Lim, P.B. (Autor:in) / Shoji, S. (Autor:in) / Takeda, H. (Autor:in) / Toyooka, S. (Autor:in) / Suprapedy (Autor:in) / Masuda, T. (Autor:in) / Hagiwara, N. (Autor:in)


    Erscheinungsdatum :

    1999


    Format / Umfang :

    8 Seiten, 6 Bilder, 9 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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