Results 11 to 20 of about 4,730,238 (111)

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   +2 more sources

Evaluation of the Size of a Defect in Reinforcing Steel Using Magnetic Flux Leakage (MFL) Measurements

Sensors, 2023
This study aimed to evaluate 2D magnetic flux leakage (MFL) signals (Bx, By) in D19-size reinforcing steel with several defect conditions. The magnetic flux leakage data were collected from the defected and new specimens using an economically designed ...
Seong-Hoon Kee, Regidestyoko Harseno, Jamal Yousaf   +2 more
exaly   +2 more sources

A Lift-Off-Tolerant Magnetic Flux Leakage Testing Method for Drill Pipes at Wellhead

Sensors, 2017
To meet the great needs for MFL (magnetic flux leakage) inspection of drill pipes at wellheads, a lift-off-tolerant MFL testing method is proposed and investigated in this paper.
Jianbo Wu, Hui Fang, Long Li, Jie Wang, Xiaoming Huang, Yihua Kang, Yanhua Sun, Chaoqing Tang   +7 more
doaj   +2 more sources

Analysis of Resistance in Magnetic Flux Leakage (MFL) Detectors for Natural Gas Pipelines

Sensors
This study systematically explores the sources and influencing factors of resistance encountered by magnetic flux leakage (MFL) detectors in natural gas pipelines through a theoretical analysis, experimental investigation, and numerical simulation.
Xiangjun Chen
exaly   +3 more sources

3D physical and finite element simulations for Non Destructive Testing (NDT) of Magnetic Flux Leakage (MFL)

, 2015
3D physical modelling and Finite Element Analysis (FEA) have been performed to investigate individual sensor's performances fabricated from highly sensitive advanced state of the art semiconductor heterostructure materials which have been developed at ...
E. Ahmad, Chuntao Liang, J. Sexton, Mohamed Missous   +3 more
core   +3 more sources

Miniature mobile sensor platforms for condition monitoring of structures [PDF]

, 2009
In this paper, a wireless, multisensor inspection system for nondestructive evaluation (NDE) of materials is described. The sensor configuration enables two inspection modes-magnetic (flux leakage and eddy current) and noncontact ultrasound.
Chan, C.C., Galbraith, W., Pierce, S.G., Hayward, G., Dobie, G.I.I., Marshall, S., Friedrich, M.   +6 more
core   +4 more sources

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

Development of an MFL Coil Sensor for Testing Pipes in Extreme Temperature Conditions

Sensors, 2021
This paper aims to design a coil sensor for corrosion monitoring of industrial pipes that could detect variations in thickness using the MFL (Magnetic Flux Leakage) technique. An MFL coil sensor is designed and tested with pipe sample thicknesses of 2, 4,
Nagu Sathappan, Mohammad Osman Tokhi, Liam Penaluna, Zhangfang Zhao, Fang Duan, Gholamhossein Shirkoohi, Aman Kaur   +6 more
doaj   +1 more source

Defect Width Assessment Based on the Near-Field Magnetic Flux Leakage Method

Sensors, 2021
Magnetic flux leakage (MFL) testing has been widely used as a non-destructive testing method for various materials. However, it is difficult to separate the influences of the defect geometrical parameters such as depth, width, and length on the received ...
Erlong Li, Yiming Chen, Xiaotian Chen, Jianbo Wu   +3 more
doaj   +1 more source

Magnetic Flux Leakage Course of Inner Defects and Its Detectable Depth

Chinese Journal of Mechanical Engineering, 2021
As a promising non-destructive testing (NDT) method, magnetic flux leakage (MFL) testing has been widely used for steel structure inspection. However, MFL testing still faces a great challenge to detect inner defects.
Jianbo Wu, Wenqiang Wu, Erlong Li, Yihua Kang   +3 more
doaj   +1 more source