Results 11 to 20 of about 1,348 (176)

Theory and Application of Magnetic Flux Leakage Pipeline Detection

Sensors, 2015
Magnetic flux leakage (MFL) detection is one of the most popular methods of pipeline inspection. It is a nondestructive testing technique which uses magnetic sensitive sensors to detect the magnetic leakage field of defects on both the internal and ...
Yan Shi, Chao Zhang, Rui Li, Maolin Cai, Guanwei Jia   +4 more
doaj   +3 more sources

Pulsed magnetic flux leakage techniques for crack detection and characterisation [PDF]

Sensors and Actuators A: Physical, 2006
Magnetic flux leakage (MFL) techniques have been widely used for non-intrusively inspecting steel installations by applying magnetization. In the situations where defects may take place on the near and far surfaces of the structure under inspection ...
Sophian, Ali, Tian, Gui Yun, Zairi, Sofiane   +2 more
core   +2 more sources

Deep Learning for Magnetic Flux Leakage Detection and Evaluation of Oil & Gas Pipelines: A Review

Energies, 2023
Magnetic flux leakage testing (MFL) is the most widely used nondestructive testing technology in the safety inspection of oil and gas pipelines. The analysis of MFL test data is essential for pipeline safety assessments.
Songling Huang, Lisha Peng, Hongyu Sun, Shisong Li   +3 more
doaj   +1 more source

Plug Valve Surface Defects Identification through Nondestructive Testing and Fuzzy Deep‐Learning Algorithm for Metal Porosity and Surface Evaluation

Journal of Engineering, Volume 2023, Issue 1, 2023., 2023
This paper addresses the detection and identification of flaws in Plug valves. The Plug valve thermal image is acquired using a Fluke thermal camera [TiS20]. Thermal images of the Plug valve are used for the identification of flaws such as Crack, Porosity, Corrosion, and Internal defects. The thermal images detect the surface flaws and never subsurface
V. Jacintha, S. Karthikeyan, P. Sivaprakasam, Karthikeyan Sathasivam   +3 more
wiley   +1 more source

[Retracted] Nondestructive Testing of Coal Mine Wire Ropes Based on Magnetic Sensors

International Transactions on Electrical Energy Systems, Volume 2022, Issue 1, 2022., 2022
Safety is the first priority in production. The situation is complex in the deep underground of coal mines, and safety accidents often occur. Wire rope is a kind of safety device. With the help of wire rope, the safety of miners can be guaranteed to a certain extent. It is a very important tool for mining production.
Youliang Yuan, Kaihui Wang, Baoyuan Chen, Yu Qiu, Raghavan Dhanasekaran   +4 more
wiley   +1 more source

Mechanism of Magnetic Flux Leakage Detection Method Based on the Slotted Ferromagnetic Lift-Off Layer

Sensors, 2022
Magnetic flux leakage (MFL) testing is widely used in non-destructive testing of ferromagnetic components. In view of the serious attenuation of the leakage magnetic field (LMF) caused by the transmission of LMF in the lift-off layer between the ...
Jian Tang, Rongbiao Wang, Gongzhe Qiu, Yu Hu, Yihua Kang   +4 more
doaj   +1 more source

Investigating the Influence of Design Frequency on the Ultrasonic Signal of PFSV‐EMATs

Journal of Sensors, Volume 2022, Issue 1, 2022., 2022
The point‐focusing shear vertical wave electromagnetic acoustic transducer (PFSV‐EMAT) with a concentric meander line (CML) coil has been developed to detect and size micro defection concealed within a certain depth of materials. It is proved to be sensitive to the design frequency, which is associated with the spacing of CML coil.
Xiaojuan Jia, Min Liu, Jingjun Zhang, Qi Ouyang, Agustin Herrera-May   +4 more
wiley   +1 more source

The Research of 30 mm Detecting Distance of Testing Device for Wire Rope Based on Open Magnetizer

Applied Sciences, 2022
Wire rope will have defects such as local faults (LF) and loss of metal area (LMA) during the long-term using process. The nondestructive testing method of magnetic flux leakage (MFL) has been widely used in wire rope defect detection.
Mengqi Liu, Chi Zhang, Xiaoyuan Jiang, Yanhua Sun, Xiaotian Jiang, Ran Li, Lingsong He   +6 more
doaj   +1 more source

Axial magnetic field sensing for pulsed magnetic flux leakage hairline crack detection and quantification [PDF]

, 2017
The Magnetic Flux Leakage (MFL) testing method is a well-established branch of electromagnetic non-destructive testing technology extensively used to observe, analyze and estimate the level of imperfections (cracks, corrosions, pits, dents, etc ...
Meydan, Turgut, Okolo, Chukwunonso K.
core   +2 more sources

Development and optimisation of low-power magnetic flux leakage inspection parameters for mild steel welds [PDF]

, 2021
Magnetic particle and other magnetic flux leakage (MFL)-based methods for the detection and evaluation of surface-breaking flaws in ferromagnetic materials typically use high-strength (≥0.5 T RMS), low-frequency (≤50 Hz) magnetic fields.
Liang, C. W., Missous, M., Sexton, J., Watson, J. M.   +3 more
core   +1 more source