FIELD: machine building.
SUBSTANCE: invention relates to structural element 11 from electrically insulating material with structure made up of conductors 14a, 14b, 14c to reveal mechanical damages, say, fractures. Said structure varies its electrical properties in continuing fracture formation (arrow 20) to allow timely replacement of structural element 11. In compliance with this invention, said electrical conductor consists of particles with metal surface that stay in contact. This allows making the electric conductor that reacts to mechanical damages to increase sensitivity of aforesaid structure 14a, 14b, 14c. If said metal surface is formed solely by shell of particles and particles consist of the material of structural element 11, then it is possible to develop a conductor with matching characteristics of thermal expansion for thermally heavily-loaded structural parts, in particular, plates of heat protection shield.
EFFECT: higher sensitivity in detection of damages.
8 cl, 6 dwg
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