V&m Deutschland Gmbh

Vallourec Deutshcland Gmbh

Ashraf Koka

Alfred Graff

Stefan Nitsche

Gert Fischer

Michael Kaack

Axel Heinz

Karsten Deegen

Sven Gwildies

A leakage flux probe for non-destructive leakage flux-testing of magnetizable bodies comprising a plurality of coils for detection of near-surface flaws in the body, wherein the coils have a degree of sensitivity which is dependent upon the orientation of the flaws in the body, and wherein coils having a different degree of sensitivity are disposed in the leakage flux probe with a first type of coil having a high degree of sensitivity for longitudinal flaws or transverse flaws and a second type of coil having a high degree of sensitivity for oblique flaws.

Leakage flux probe for non-destructive leakage flux-testing of bodies consisting of magnetisable material

A device for nondestructive testing of a pipe made of ferromagnetic steel for detection of longitudinal, transverse or inclined flaws using magnetic or magnetic-induction test procedures is disclosed. The device includes a magnetizing yoke which transmits the magnetic flux contactless into the pipe and at least two magnetic-field-sensitive scanning probes having GMR sensors. The GMR sensors are combined into sensor groups in form of a sensor array and electrically connected in parallel. A single preamplifier connected to each sensor group in one-to-one correspondence. The device further includes an evaluation unit.

Device for nondestructive testing of pipes

Growing community of inventors

Düsseldorf, Germany

Ashraf Koka