METHOD FOR TECHNICAL QUALITY INSPECTION OF ROPES, AND AUTOMATED FLAW DETECTOR FOR REALISING SAID METHOD Russian patent published in 2016 - IPC G01N27/82 

FIELD: materials.

SUBSTANCE: invention relates to nondestructive quality inspection of articles using scattering magnetic flows method, and is intended primarily for flaw-detection testing of ferromagnetic wire ropes and device therefor. Inspection method for technical state of rope consists in that to detect wire breaks, signals are measured simultaneously by means of both Hall sensors and inductance coils, via both local defects channel and section loss channel, then obtained signals from sensors are processed together, with addition of dead zone near detected break, in order to so avoid double accounting of same break, including in presence of offset signal from break via different channels. Also disclosed design of flaw detector for realising above described method, wherein magnetic head is included consisting of magnetising system in form of two semi-cylinders, and measurement system with Hall sensors, located in two planes around circumference, and two saddle-shape inductor coils connected via cable to control and display unit, having possibility of automatic processing and display of integral inspection result on colour indicator (red/yellow/green), and also additional information on alphanumeric display.

EFFECT: invention provides higher reliability of determining rate of wire breaks, and higher diagnostic accuracy due to correct breaks summation detected through both channel of Hall sensors and channel of inductance coils.

4 cl, 8 dwg