Results 31 to 40 of about 3,991,060 (277)

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

Finite element simulation of pipe permeability at the wall defect after saturation magnetization

You-qi chuyun, 2021
In the magnetic flux leakage and eddy current combined inline inspection technology, the signal of eddy current sensor is not only affected by the type and size of the defect itself, but also affected by the permeability of pipe at the defect.
Yunli ZHAO, Ming SHE, Yi QIANG
doaj   +1 more source

A Mobile Ferromagnetic Shape Detection Sensor Using a Hall Sensor Array and Magnetic Imaging

Sensors, 2011
This paper presents a Mobile Hall Sensor Array system for the shape detection of ferromagnetic materials that are embedded in walls or floors. The operation of the Mobile Hall Sensor Array system is based on the principle of magnetic flux leakage to ...
Nashiren Farzilah Mailah, Mohd Hamiruce Marhaban, Ng Wei Shin, Norhisam Misron, Suhaidi Shafie   +4 more
doaj   +1 more source

Quantization of magnetic flux leakage internal detection signals for composite defects of gas and oil pipelines

Energy Reports, 2023
This study aimed to solve the quantitative problem of the magnetic flux leakage (MFL) internal detection signals of long-distance oil and gas pipelines.
Bin Liu, Zihan Wu, Peng Wang, Luyao He, Lijian Yang, Zheng Lian, Tong Liu   +6 more
doaj   +1 more source

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

Assessing electron heat flux dropouts as signatures of magnetic field line disconnection from the Sun [PDF]

, 2005
Suprathermal electrons focused along magnetic field lines, called the strahl, carry heat flux away from the Sun. Various factors can cause heat flux dropouts (HFDs), including times when the strahl almost vanishes.
Larson, DE, D. E. Larson, C. Pagel, Crooker, NU, Pagel, C, N. U. Crooker   +5 more
core   +1 more source

Adaptive Filtering Method of MFL Signal on Rail Top Surface Defect Detection

IEEE Access, 2021
Magnetic flux leakage (MFL) detection technology provides an effective method to conduct high-speed detection of the damage suffered by rail surface.
Kailun Ji, Ping Wang, Yinliang Jia, Yunfei Ye, Shunyi Ding   +4 more
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

Solar flux emergence : a three-dimensional numerical study [PDF]

, 2008
Flux is continually emerging on the Sun, making its way from the solar interior up into the atmosphere. Emergence occurs on small-scales in the quiet Sun where magnetic fragments emerge, interact and cancel and on large-scales in active regions where ...
Murray, Michelle J.
core   +2 more sources

Effective Modeling of Leakage Inductance for use in Circuit Simulation

, 2008
Theoretical methods for the calculation of winding losses with respect to frequency have been well documented, but the variation in leakage inductance of magnetic components due to frequency has been less well addressed. In this paper Dowell’s well-known
Brown, Andrew, Wilson, Peter
core   +2 more sources