PROTECTOR FOR ELECTROMAGNETIC-ACOUSTIC TRANSDUCERS Russian patent published in 2012 - IPC G01N29/04 

FIELD: physics.

SUBSTANCE: protector for electromagnetic-acoustic transducers is in form of a collection of three or more ceramic plates, wherein end faces of neighbouring plates adjoin each other or are a small distance from each other, and are connected to each other by a sufficiently flexible material having lower specific conductivity than the collection of ceramic plates on the side facing the control object, forms a flat or cylindrical surface having radius of curvature which satisfies the condition R≥d/2, where d is the minimum outer diameter of the control object, and characteristic dimensions of the ceramic plates are selected based on geometric parameters of irregularities of the control object in the range of 2-12 mm, wherein the thickness of the ceramic plates at their thickest point is in the range of 0.1-3 mm.

EFFECT: high service durability of the electromagnetic-acoustic transducer.

5 cl, 3 dwg