DEVICE FOR CONCRETE STRENGTH MEASUREMENT Russian patent published in 2023 - IPC G01N3/317 

FIELD: NDT equipment.

SUBSTANCE: device for measuring the strength of concrete is disclosed, containing a striker and a piezoelectric sensor, the electrodes of which are connected to the inputs of a high-pass filter, the output of which is connected to the inputs of a frequency meter and a damping coefficient meter, equipped with a variable mass weight, a solenoid winding and a source of alternating electric current, while the striker located in the solenoid winding connected to a source of alternating electric current. The device is additionally equipped with a piezoelectric gyroscope sensor that records the deviation of the striker from the normal to the surface of the concrete sample, and a servo drive that corrects the position of the striker in relation to the concrete sample.

EFFECT: improved accuracy of concrete strength measurement.

1 cl, 2 dwg