DEFORMATION MEASURING DEVICE Russian patent published in 2024 - IPC G01B11/16 G01L1/24 

FIELD: measuring equipment.

SUBSTANCE: invention is intended for measuring internal stresses of deformed objects, as well as collecting statistical information in order to predict the moment of onset of static deformation of the analyzed sample and the moment of appearance of the first microcracks in the structure of the object, i.e. its destruction. Device consists of three fiber-optic pressure and deformation sensors with optical Bragg grating, laser transmitter, synchronizing device, receiver, storage device and computer. At that, the sensor housing is made in the form of a tetrahedron, wherein the fiber-optic sensors are installed on the tetrahedron side faces, which is fixed so that the investigated point of the surface of the article is covered by the base of this tetrahedron. At that, device is made with possibility to form hodograph of stress-strain state in three-dimensional plane during synchronous reading of vibration amplitude vectors values from fiber-optic sensors, inclination angle of which corresponds to the accumulated fatigue stress of the material in the investigated zone.

EFFECT: increased safety of object operation due to implementation of more complete control of its technical condition and increased service life of object due to more rational consumption of safety margin of object material.

1 cl, 4 dwg