Method and apparatus for measuring the thickness of a non-metall

Details Method and apparatus for measuring the thickness of a non-metall Method and apparatus for measuring the thickness of a non-metall

1977-07-12

1978-12-12

Smith, Alfred E.

Radiant energy

Coded record and readers; invisible radiant energy type

250273, G01N 2320, G21K 100

Patent

active

041297784

ABSTRACT:
The thickness of paint or other non-metallic coating on a galvanized or other plated metal plate is measured by applying radiation to the plated and painted plate and measuring the intensities of fluorescent X-rays thereupon emitted by the plating layer and base plate respectively. The fluorescent X-rays are detected and the electric signal produced by the detector is amplified and shaped to a corresponding waveform. The output of the amplifier is fed to two single channel analyzers and the output signals of the analyzers are counted for a predetermined time period and fed to a computer which computes the thickness from the measured intensities of the emitted fluorescent X-rays.

REFERENCES:
patent: 2711480 (1955-06-01), Friedman
patent: 3984679 (1976-10-01), Lublin et al.

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