MEASUREMENT METHOD OF DESTRUCTIVE TEST PARAMETERS OF PIPELINES, AND SYSTEM FOR ITS IMPLEMENTATION Russian patent published in 2013 - IPC G01N3/12 G01N27/72 

FIELD: machine building.

SUBSTANCE: axial notch of the specified length and depth is made on the tested pipe. The tested pipe is loaded with internal pressure providing the occurrence of a crack initiated with the above notch and its propagation in axial direction from the notch centre to the pipe ends. Movement of the crack front is controlled by means of magnetic field sensors connected to the measuring system, which is created by means of magnetic inductors. The above sensors and the magnetic inductors are installed on the tested pipe in pairs and symmetrically relative to the line passing through the above axial notch. The system includes a magnetising system including magnetic inductors, a measuring system containing magnetic field sensors connected to a recording device. In addition, magnetic field sensors are connected to the recording device by means of amplifiers-differentiators.

EFFECT: enlarging the possibilities and increasing quick action of measurement of dynamic parameters of the test pipes destruction.

8 cl, 1 dwg