MAGNETO-ELASTIC TRANSDUCER Russian patent published in 2007 - IPC G01L1/12 G01B7/24 

FIELD: measuring technique; non-destructing inspection.

SUBSTANCE: magneto-elastic transducer can be used for inspecting stresses in ferromagnetic materials. Transducer has case, measuring windings and excitation winding provided with magnetic circuits. Cores of magnetic circuits of detector are made of separate sheet U-shaped members made of high-quality vacuum transformer iron, which has strict square cross-section. Both cores of magnetic circuits of transducer are placed mutually perpendicular in transducer's case. Excitation winding of transducer is placed onto two mutual perpendicular identical poles of cores of transducer's magnetic circuits, which poles are brought into coincidence. Value of voltage, which feeds excitation winding, equals to 50 Hz and magnetic field induction equals to 100 T and higher. To create reliable and constant magnetic contact, the layer of concentrated magnetic fluid can be applied onto working poles of magneto-elastic transducer and onto site where the transducer should be placed, before beginning of measurement.

EFFECT: improved sensitivity; increased precision, resolution and reliability of measurement.

2 cl, 4 dwg