FIELD: machine building.
SUBSTANCE: waves of two different types are used (for example, horizontally polarised transverse wave and symmetric Lamb wave) for detection of defects of different types by comparing corresponding signals received from defects. Signals can be detected with electromagnetic acoustic measuring converters. Certain amplitudes of received signals of waves of both types are compared for calculation of the ratio that can be compared to distribution of values of ratios for known defects for the purpose of evaluating the type of the detected defect. The device can represent a group of sensors, which has the possibility of being installed on an in-tube apparatus and having several sensors distributed in its circumferential direction.
EFFECT: possibility of detection of crack-forming and other defects in a pipeline wall.
12 cl, 2 dwg, 6 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF INTRATUBE ULTRASONIC DIAGNOSTICS OF CONDITION OF PIPE-LINE | 1999 |
|
RU2153163C1 |
| METHOD OF DIAGNOSTICS OF CONDITION OF MAIN PIPE-LINES | 2000 |
|
RU2156455C1 |
| FERROMAGNETIC ALLOY PIPES WALL THICKNESS MEASURING METHOD AND DEVICE FOR THE METHOD IMPLEMENTATION | 2022 |
|
RU2790307C1 |
| METHOD FOR IN-PIPE DIAGNOSTICS OF PIPELINE TECHNICAL STATE | 2018 |
|
RU2697008C1 |
| METHOD OF ULTRASONIC CONTROL OF PIPELINE AND SYSTEM FOR ITS IMPLEMENTATION | 2016 |
|
RU2629896C1 |
| DEVICE FOR IN-PIPE DIAGNOSTICS OF PIPELINE TECHNICAL STATE | 2018 |
|
RU2697007C1 |
| METHOD AND SYSTEM TO TRACK TRAJECTORY OF MOTION OF PIG | 2013 |
|
RU2574698C2 |
| METHOD FOR APPLICATION OF OVERHEAD ULTRASONIC FLOW METERS ON CRYOGENIC TEMPERATURE PIPELINES AND ULTRASONIC FLOW METER FOR ITS IMPLEMENTATION | 2019 |
|
RU2763274C2 |
| METHOD FOR EMERGENCY MAINTENANCE OF HIGH PRESSURE PIPELINES | 2010 |
|
RU2442072C1 |
| METHOD FOR DETECTING ILLEGAL TAPPING IN PIPELINE | 2018 |
|
RU2681552C1 |
