Effects of the PIG Draft Velocity on the Defect Signals in MFL NDT System

자기 누설 비파괴 탐상 시스템에서 PIG의 주행속도가 검출신호에 미치는 영향

  • 박상호 (한국해양대학 전기전자공학부) ;
  • 박관수 (부산대학 전자전기통신공학부)
  • Published : 2003.10.01

Abstract

In this paper, dynamic characteristics of the magnetic flux leakage(MFL) type non-destructive testing(NDT) are analyzed. Effects of a sensor speed in MFL PIG system and remanent magnetization of the gas pipeline are analyzed by using 3 dimensional nonlinear finite element analysis including eddy current and hysteresis characteristics. Results show that the speed of the sensor reduces the magnitude of the sensing signals where as the hysteresis of the pipeline distorts the sensing signals.

Keywords

References

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