Results 51 to 60 of about 2,329,810 (183)

The physical properties of magnetic inks [PDF]

, 1988
The magnetic particle inspection (MPI) method is a widely used non destructive testing (NDT) technique for ferrous structures. Magnetic inks used in MPI are suspensions of fine ferro/ferrimagnetic particles which, when applied to a magnetized test ...
McCoy, J.M, McCoy, James Martin
core  

Combining Magnetic Flux Leakage and Optical Inspection Technique for Identification of Nearby Pittings [PDF]

International Journal of Advanced Design and Manufacturing Technology, 2018
Magnetic Flux Leakage (MFL) is an indirect measurement technique. Therefore, calibration curves are generally used to estimate the depths of the defects from the measured MFL signals.
Turaj Azizzadeh, Mir Saeed Safizadeh
doaj  

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   +1 more source

A Review of Technical Advances and Applications of Intelligent Inspection Robots in Structural Health Monitoring

SmartBot, Volume 1, Issue 3, September 2025.
This review presents recent advances in intelligent inspection robots for structural health monitoring. It highlights key technologies in sensing, data processing, and fault localization, along with challenges and future directions. The aim is to support practical deployment and promote intelligent, efficient, and autonomous monitoring systems ...
Dongjie Li, Huaitao Shi, Bing Cai, Xiaotian Bai, Lu Chen, Gang Han, Chenghong Mi   +6 more
wiley   +1 more source

Three-dimensional dynamic simulation analysis of magnetic flux leakage distribution in broken strands of wire ropes

Gong-kuang zidonghua
Current simulation studies on the distribution pattern of magnetic flux leakage (MFL) in broken strands of wire ropes primarily use finite element static magnetic field simulation models. In these models, the wire rope and the damage detection instrument
WEI Mingjiang, ZHAN Weixia, SHANG Yunkun, LIU Jibing, LIU Yao   +4 more
doaj   +1 more source

Continuous wavelet transform of railway track defectoscopic signals in the Matlab Wavelet Toolbox [PDF]

Biuletyn Wojskowej Akademii Technicznej, 2014
[b]Abstract[/b]. Rail networks across the world are getting busier with trains travelling at higher speeds and carrying more passengers and heavier axle loads than ever before.
Vitalij Nichoga, Liubomyr Vashchyshyn
doaj   +1 more source

Safeguarding Pipeline Integrity Through Stacked Ensemble Learning and Data Fusion

International Journal of Mechanical System Dynamics, Volume 5, Issue 1, Page 129-140, March 2025.
ABSTRACT This research presents a novel approach to pipeline Structure Health Monitoring (SHM) by utilizing frequency response function signals and integrating advanced data‐driven techniques to detect and evaluate vibration responses regarding loose bolts, scale deposits within pipelines, and cracks at pipeline supports, aiming to determine the ...
Hussein A. M. Hussein, Sharafiz B. Abdul Rahim, Faizal B. Mustapha, Prajindra S. Krishnan   +3 more
wiley   +1 more source

Parametric design methodology for yoke-magnetization in magnetic flux leakage detection systems

Results in Engineering
Magnetic flux leakage (MFL) testing is a widely employed non-destructive testing (NDT) method, particularly for ferromagnetic materials. This paper proposes a systematic design procedure for the yoke-magnetization component in MFL systems utilizing ...
Quoc Minh Lam, Van Tu Duong, Hoang Long Phan, Tan Tien Nguyen, Huy Hung Nguyen   +4 more
doaj   +1 more source

Hybrid CNN–Transformer Approach for Rotor Interturn Short‐Circuit Fault Detection in Doubly Fed Induction Generators at Synchronous Speed

IET Electric Power Applications, Volume 19, Issue 1, January/December 2025.
This paper proposes a hybrid deep learning method combining convolutional neural networks (CNNs) and transformer architectures for detecting rotor interturn short‐circuit (RITSC) faults in doubly fed induction generators (DFIGs), with a focus on the challenging near‐synchronous speed condition.
Sajad Khoshbakht, SeyedMohammad M. Moosavi, Sérgio M. A. Cruz   +2 more
wiley   +1 more source

Effect of High Temperatures on MFL Signals

e-Journal of Nondestructive Testing
Magnetic Flux Leakage (MFL) is a widely used non-destructive testing (NDT) technique for in line inspection (ILI) of pipelines, valued for detecting and characterising corrosion-induced metal loss.
I. C. Perez-blanco, J. J. Padilla, M.A, Rios-tarazona, S. Perez-rodriguez, J. C. Villamizar-rincon, L. Angel, M. B. Castellanos   +6 more
doaj   +1 more source