Results 31 to 40 of about 4,991,557 (281)

Composite excitation multi-extension direction defect magnetic flux leakage detection technology

Journal of Measurement Science and Instrumentation, 2022
In the traditional pipeline magnetic flux leakage (MFL) detection technology, circumferential or axial excitation is mainly used to excite the magnetic field of defects.
WEI Minghui, TU Fengmiao, ZHANG Peng, JIANG Lixia, JIANG Pengbo, JING Yu   +5 more
doaj  

Serial MTJ-Based TMR Sensors in Bridge Configuration for Detection of Fractured Steel Bar in Magnetic Flux Leakage Testing

Sensors, 2021
Thanks to high sensitivity, excellent scalability, and low power consumption, magnetic tunnel junction (MTJ)-based tunnel magnetoresistance (TMR) sensors have been widely implemented in various industrial fields.
Zhenhu Jin, Muhamad Arif Ihsan Mohd Noor Sam, Mikihiko Oogane, Yasuo Ando   +3 more
doaj   +1 more source

A Magnetic Flux Leakage and Magnetostrictive Guided Wave Hybrid Transducer for Detecting Bridge Cables [PDF]

Sensors, 2012
Condition assessment of cables has gained considerable attention for the bridge safety. A magnetic flux leakage and magnetostrictive guided wave hybrid transducer is provided to inspect bridge cables. The similarities and differences between the two methods are investigated.
Jiang Xu 0003, Xinjun Wu, Cheng Cheng, Anran Ben   +3 more
openaire   +3 more sources

Formation of magnetic flux tubes in cylindrical wedge geometry [PDF]

, 2012
Three-dimensional (3D) MHD numerical simulations have not been able to demonstrate convincingly the spontaneous formation of large vertical flux tubes.
Hurlburt, Neal, Botha, G.J.J., Hurlburt, N. E., Botha, Gert, Rucklidge, A.M., Rucklidge, A. M., Botha, G. J. J., Hurlburt, N.E., Rucklidge, Alistair   +8 more
core   +1 more source

A Study on the Method of Magnetic Flux Leakage NDTfor Detecting Axial Cracks [PDF]

Journal of the Korean Magnetics Society, 2011
From among the NDT (nondestructive testing) methods, the MFL (magnetic flux leakage) method is specially suitable for testing pipelines because pipeline has high magnetic permeability. The system applied to MFL method is called the MFL PIG. The previous MFL PIG showed high performance in detecting the metal loss and corrosions.
Seung-Ho Yun, Gwan-Soo Park
openaire   +1 more source

Effect of Magnetic Field on Corrosion Behavior of X52 Pipeline Steel in Simulated Soil Solution

International Journal of Electrochemical Science, 2021
Magnetic flux leakage detection is the primary method used for detecting metal damage in oil and gas pipelines. After a magnetic flux leakage test is used, a residual magnetic field remains in the steel pipeline for a long time.
Yong Yang, Yanlong Luo, Ming Sun, Junqiang Wang   +3 more
doaj   +1 more source

Enhancing Wire-Rope Damage Signals Based on a Radial Magnetic Concentrator Bridge Circuit

Sensors, 2022
Hall-effect sensors are used for the non-destructive testing of wire ropes owing to their low power consumption and high operation frequency. The high-speed operation of wire ropes causes vibration inclination at different frequencies, which makes it ...
Jie Tian, Wei Wang, Hongyao Wang, Qiang Bai, Zeyang Zhou, Pengbo Li   +5 more
doaj   +1 more source

A Magnetic Flux Leakage Detector for Ferromagnetic Pipeline Welds with a Magnetization Direction Perpendicular to the Direction of Travel

Sensors
For the sake of realizing the safety detection of natural gas and petroleum pipeline welds, this paper designs a ferromagnetic pipeline weld magnetic flux leakage detector based on the calculation of the magnetic circuit of the detection probe, with the ...
Wei Cui, Zhongmin Xiao, Ziming Feng, Jie Yang, Qiang Zhang   +4 more
doaj   +1 more source

Research of impact factors of wire rope flaw detector based on principle of magnetic flux leakage

Gong-kuang zidonghua, 2015
The paper introduced magnetic flux leakage testing principle of wire rope flaw detector, and used finite element analysis method to analyze impact factors of detection results of wire rope flaw detector based on flux leakage testing principle, the impact
ZHANG Cao, ZHU Chengjian, LIU Jiankang
doaj   +1 more source

Extraction of Flux Leakage and Eddy Current Signals Induced by Submillimeter Backside Slits on Carbon Steel Plate Using a Low-Field AMR Differential Magnetic Probe

IEEE Access, 2021
Magnetic Flux Leakage (MFL) and Eddy Current Testing (ECT) are commonly employed as the non-destructive evaluation (NDE) techniques used to detect defects within the steel.
Mohd Aufa Hadi Putera Zaini, Mohd Mawardi Saari, Nurul A'In Nadzri, Zulkifly Aziz, Nur Huda Ramlan, Keiji Tsukada   +5 more
doaj   +1 more source