METHOD OF ULTRASONIC MATERIAL CONTROL OF POLYETHYLENE PIPE (VERSIONS) Russian patent published in 2017 - IPC G01N29/04 

FIELD: measuring equipment.

SUBSTANCE: piezoelectric transducer is installed in series, uniformly along the perimeter of the outer surface of a polyethylene pipe, and introducing the pulses of ultrasonic oscillations into the pipe material is sequentially carried out through its outer surface along the normal to its outer surface of longitudinal oscillations, and receiving reflected ultrasonic oscillations is sequentially carried out from the inner surface of the pipe wall, wherein the transit time of the ultrasonic oscillations at each set point of the piezoelectric transducer is sequentially measured and the measured values are stored, then the standard deviation of the measured values is determined and by the standard deviation value, which is compared to the standard deviation of the polyethylene pipe with the limiting material condition, obtained similarly to that described above in determining the standard deviation of the controlled polyethylene pipe, the possibility of further operation of the polyethylene pipe is determined.

EFFECT: providing the possibility of determining the further operation of a polyethylene pipe.

2 cl, 3 dwg