Accession Number : ADD011913

Title :   Ferromagnetic Resonance Probe Liftoff Suppression Apparatus.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Davis,T J ; Tomeraasen,P L

Report Date : 09 Jul 1985

Pagination or Media Count : 5

Abstract : A liftoff suppression apparatus utilizing a liftoff sensing coil to sense the amount a ferromagnetic resonance probe lifts off the test surface during flaw detection and utilizing the liftoff signal to modulate the probe's field modulating coil to suppress the liftoff effects. (Author)

Descriptors :   *PATENTS, *PROBES(ELECTROMAGNETIC), *FERROMAGNETIC RESONANCE, *NONDESTRUCTIVE TESTING, DEFECTS(MATERIALS), EDDY CURRENTS, DETECTION, TEST EQUIPMENT, STRUCTURAL ANALYSIS, TEST FIXTURES, MODULATION, SPHERES, SURFACES, PROBES, LIFT, COILS, INVENTIONS

Subject Categories : Test Facilities, Equipment and Methods
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE