TY - GEN
T1 - An MFL Probe using Shiftable Magnetization Angle for Front and Back Side Crack Evaluation
AU - Hadi Putera Zaini, Mohd Aufa
AU - Mawardi Saari, Mohd
AU - Nadzri, Nurul Arin
AU - Mohd Halil, Aiman
AU - Tsukada, Keiji
N1 - Funding Information:
ACKNOWLEDGMENT The authors would like to thank to the Ministry of Higher Education of Malaysia (grant no. RDU160115) and the Universiti Malaysia Pahang (grant no. RDU170377) for laboratory facilities and financial assistance.
Funding Information:
The authors would like to thank to the Ministry of Higher Education of Malaysia (grant no. RDU160115) and the Universiti Malaysia Pahang (grant no. RDU170377) for laboratory facilities and financial assistance.
Publisher Copyright:
© 2019 IEEE.
PY - 2019/4/22
Y1 - 2019/4/22
N2 - Magnetic Flux Leakage (MFL) is one of the common methods in Non-destructive Tests employing magnetic technique. It can be used to detect flaws such as cracks in metallic materials such as steel, whereas, steel is widely known as a base material used for constructions. Therefore, early detection of these flaws is very crucial in order to prevent any accident that could cost lives. Conventionally, MFL method utilizes a strong magnetic field to saturate samples and detects the magnetic flux leakage. However, in this study, a sensitive magnetic probe has been developed to remove the need of using a strong magnetic field to saturate samples. the MFL probe is fabricated with 2 AMR sensors, a home-made amplifier circuit, a set/reset circuit and a flexible yoke. Furthermore, the flexible yoke is proposed in order to apply the magnetic field to the sample at different magnetization angles. Using the developed probe, we measure the magnetic responses at front and back side surfaces of a 2-mm galvanized steel plate at different frequencies. The sample itself is embedded with artificial slits with different depth, ranging from 1.0 mm to 1.6 mm. Moreover, the effect of different magnetization angle of 60° and 90° from the surface is also discussed. From the results, it can be said that the 60° magnetization angle from the surface is proved to provide a considerable improvement for the surface slit detection, while, having close to no effect compared to the 90° magnetization angle on the back side slit detection.
AB - Magnetic Flux Leakage (MFL) is one of the common methods in Non-destructive Tests employing magnetic technique. It can be used to detect flaws such as cracks in metallic materials such as steel, whereas, steel is widely known as a base material used for constructions. Therefore, early detection of these flaws is very crucial in order to prevent any accident that could cost lives. Conventionally, MFL method utilizes a strong magnetic field to saturate samples and detects the magnetic flux leakage. However, in this study, a sensitive magnetic probe has been developed to remove the need of using a strong magnetic field to saturate samples. the MFL probe is fabricated with 2 AMR sensors, a home-made amplifier circuit, a set/reset circuit and a flexible yoke. Furthermore, the flexible yoke is proposed in order to apply the magnetic field to the sample at different magnetization angles. Using the developed probe, we measure the magnetic responses at front and back side surfaces of a 2-mm galvanized steel plate at different frequencies. The sample itself is embedded with artificial slits with different depth, ranging from 1.0 mm to 1.6 mm. Moreover, the effect of different magnetization angle of 60° and 90° from the surface is also discussed. From the results, it can be said that the 60° magnetization angle from the surface is proved to provide a considerable improvement for the surface slit detection, while, having close to no effect compared to the 90° magnetization angle on the back side slit detection.
KW - Crack in steel
KW - Magnetic flux leakage
KW - Magnetization angle
KW - NDT
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U2 - 10.1109/CSPA.2019.8696064
DO - 10.1109/CSPA.2019.8696064
M3 - Conference contribution
AN - SCOPUS:85065466971
T3 - Proceedings - 2019 IEEE 15th International Colloquium on Signal Processing and its Applications, CSPA 2019
SP - 157
EP - 161
BT - Proceedings - 2019 IEEE 15th International Colloquium on Signal Processing and its Applications, CSPA 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 15th IEEE International Colloquium on Signal Processing and its Applications, CSPA 2019
Y2 - 8 March 2019 through 9 March 2019
ER -