Method of detecting a surface flaw of metallic material

Details Method of detecting a surface flaw of metallic material Method of detecting a surface flaw of metallic material

1976-04-30

1978-08-29

Goldstein, Herbert

Measuring and testing

Gas content of a liquid or a solid

By vibration

G01N 2572

Patent

active

041095081

ABSTRACT:
A method for detecting a surface defect or flaw of metallic material, comprising the steps of subjecting the surface layer of metallic material to high-frequency induction heated in a linear manner, transferring the heating portion of the surface layer of the metallic material, measuring the surface temperature of the metallic material after its being subjected to heating, and determining the depth of the surface defect or flaw on the basis of the level of the value of temperature rise.

REFERENCES:
patent: 3020745 (1962-02-01), Sielicki
patent: 3378685 (1968-04-01), Green et al.
patent: 3672204 (1972-06-01), Green
patent: 3681970 (1972-08-01), Wells
patent: 3805073 (1974-04-01), Jayachandra
Green, "Thermal & Infrared Nondestructive Testing of Composites & Ceramics in Materials Evaluation", vol. 29, #1, 11/71 pp. 241-249.

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