Title: Apparatus for magnetically detecting faults in metal bodies utilizing a multiphase generator to generate a rotating field in the body

Abstract: An improved device for magnetically detecting and locating defects in metal bodies such as shafts, tubes, strips, sheets etc., in which a multiphase generator is used to generate a traveling field such as a rotating or linearly traveling field in the body being tested and in which means are provided to sense any assymetry in the resulting magnetic field resulting from eddy currents induced in the object such as to permit determining the location and nature of the fault from the electrical signals obtained.

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Inventors: Tornblom, Bengt Hj. (Vasteras, SW)

Application Number: 480424
Filing Date: 1974-06-18
Publication_date: 1976-03-16
Assignee: Allmanna Svenska Elektriska Aktiebolaget (Vasteras, SW)
Primary Class(es): 324/242
Other Classes:
US Patent Ref:

2467306

Apr, 1949

Habig

324/40.

Other Refs: 847,661742,535

Jun, 1952	DT
May, 1943	DD

Primary Examiner: Corcoran, Robert J.
Assistant Examiner:
Attorney: Kenyon & Kenyon Reilly Carr & Chapin