Title :
Employing magnetic sensor array for inspecting cracks in a pipeline
Author :
Kim, Jungmin ; Choi, Myoungki ; Lee, Jinyi
Author_Institution :
Grad. Sch., Dept. of Control & Instrum. Eng., Chosun Univ., Gwangju, South Korea
Abstract :
In this paper, an NDT method for detecting cracks in a rotor bore is proposed. A linearly integrated Hall sensor array (LIHaS) with a small yoke-type magnetizer measures the distribution of a magnetic field (DMF) in a rotor bore. The crack information is then extracted by analyzing the DMF. In the sample test, an axis-directional crack and an arc-directional crack with the length of 0.9 mm was detected with the width of the crack at 0.1 mm. The cracks had depths of 0.2 mm and 0.5 mm, respectively.
Keywords :
crack detection; magnetic field measurement; magnetic sensors; nondestructive testing; pipelines; rotors; sensor arrays; NDT method; arc-directional crack; axis-directional crack; inspection; linearly integrated Hall sensor array; magnetic field; magnetic sensor array; pipeline; rotor bore; small yoke-type magnetizer; Arrays; Magnetic circuits; Magnetic field measurement; Magnetic fields; Magnetic flux leakage; Magnetic resonance imaging; Rotors; Crack; Damage Tolerance; Magnetic Camera; NDT; Pipe;
Conference_Titel :
Sensors Applications Symposium (SAS), 2011 IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
978-1-4244-8063-0
DOI :
10.1109/SAS.2011.5739790
