Flaw detector for pipe employing magnets located outside the pip

Details Flaw detector for pipe employing magnets located outside the pip Flaw detector for pipe employing magnets located outside the pip

1978-12-13

1981-03-24

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Magnetic sensor within material

324242, G01R 3312, G01N 2782

Patent

active

042583187

ABSTRACT:
A detector for magnetically detecting flaws on the inner surface of a pipe of magnetizable material comprising a magnetizing assembly having exciting magnets and movable longitudinally along the exterior of the pipe and a detecting assembly movable longitudinally along the interior of the pipe. The magnetizing and detecting assemblies are opposite and close to each other through the wall of the pipe and movable longitudinally of the pipe in a synchronized manner to ensure highly accurate flaw detection.

REFERENCES:
patent: 1978252 (1934-10-01), Drake
patent: 2308159 (1943-01-01), Drummand et al.
patent: 2563254 (1951-08-01), Lewis
patent: 3209243 (1965-09-01), Walters et al.
patent: 3535623 (1970-10-01), Wood et al.
patent: 3693075 (1972-09-01), Forester
patent: 3872378 (1975-03-01), Shirana et al.
M. Karasek, "Large Signal Analysis of the Silicon pnp-Baritt Diode", 1976, Solid State Electronics, vol. 19, pp. 625-631.

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