Material-testing method and apparatus

Details Material-testing method and apparatus Material-testing method and apparatus

G - Physics

01

N

73/55

G01N 21/25 (2006.01) G01J 3/44 (2006.01) G01N 21/65 (2006.01)

Patent

CA 1138218

ABSTRACT OF THE DISCLOSURE In materials-testing involving comparative examination of the surface of a particular material specimen, specimen surfaces are irradiated with monochromatic light and the Raman spectra of the specimen surfaces are recorded only for certain predetermined spectral regions, the spectral regions having been predetermined through prior recording of the Raman spectra of comparison bodies of different surface character, from which prior recording lines of the spectra which depend on surface character have been selected and classified in accordance with their characteristic properties; characteristic line properties for the specimen recordings are compared to those for the comparison-body recordings in order to make a determination of whether the specimen surfaces are of the acceptable quality represented by the comparison-body surfaces.

359725

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