ELECTROMAGNETIC-ACOUSTIC TRANSDUCER FOR ULTRASONIC TESTING Russian patent published in 2018 - IPC G01N29/22 

FIELD: measuring equipment.

SUBSTANCE: application: to detect defects in products made of electrically conductive material in a non-contact way. Summary of the Invention thing is the electromagnetic-acoustic transducer comprises a magnetization assembly of the controlled article in the form of a biaxial trolley, solenoids of the electromagnet are located on the axes of the wheel pairs, and the poles of the electromagnet are the wheels of wheel pairs of the trolley and the inductor assembly with the coils for creating an alternating electromagnetic field of the ultrasonic frequency, located in the region of the magnetic field with the ability to move relative to the magnetizing unit, the coil inductor reinforced in a hermetic flexible shell of wear-resistant electrically insulating material and placed at the minimum possible distance from the contact spot of the wheel of the trolley with the controlled product.

EFFECT: technical result: expansion of functional capabilities of the electromagnetic-acoustic transducer by providing ultrasonic non-contact control of long products at significant scanning speeds.

1 cl, 2 dwg