Digital light sensor and eddy-current sensor measure thickness without contact. Surface of Coating reflects laser beam to optical sensor. Position of reflected spot on sensor used by microcomputer to calculate coating thickness. Eddy-current sensor maintains constant distance between optical sensor and metal substrate. When capabilities of available components fully exploited, instrument measures coatings from 0.001 to 6 in. (0.0025 to 15 cm) thick with accuracy of 1 part in 4,000. Instrument readily incorporated in automatic production and inspection systems. Used to inspect thermal-insulation layers, paint, and protective coatings. Also used to control application of coatings to preset thicknesses.


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    Titel :

    Measuring Thicknesses of Coatings on Metals


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    01.05.1986



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Measuring Thicknesses of Wastewater Films

    Schubert, F. H. / Davenport, R. J. | NTRS | 1987



    Measuring Thicknesses With In Situ Ultrasonic Transducers

    Dunn, Daniel E. / Cerino, Joseph R. | NTRS | 1995