Results 81 to 90 of about 1,348 (176)

A NDT&E Methodology Based on Magnetic Representation for Surface Topography of Ferromagnetic Materials [PDF]

, 2016
Accurate evaluation is the final aim of nondestructive testing (NDT). However, the present electromagnetic NDT methods are commonly used to check the existence of defects, and all the tested targets only consist of concave defects (i.e., section-loss ...
Liu, Shiwei, Sun, Yanhua
core   +2 more sources

Nondestructive Inspection of Steel Cables Based on YOLOv9 with Magnetic Flux Leakage Images

Journal of Sensor and Actuator Networks
The magnetic flux leakage (MFL) method is widely acknowledged as a highly effective non-destructive evaluation (NDE) technique for detecting local damage in ferromagnetic structures such as steel wire ropes.
Min Zhao, Ning Ding, Zehao Fang, Bingchun Jiang, Jiaming Zhong, Fuqin Deng   +5 more
doaj   +1 more source

Weak magnetic flux leakage : a possible method for studying pipeline defects located either inside or outside the structures [PDF]

, 2015
Magnetic leakage distribution results from linear defects of oil–gas pipelines in a weak magnetic field, which is modeled by the magnetic dipole theory.
Cao, Y., Lin, Y. R., Liu, Bin, Sun, W. R., Xu, B., Zhang, Hai   +5 more
core   +1 more source

Omnidirectional crack detection in welded structures using a Rotating Three-Pole Magnetization system with a flexible coil array sensor

Journal of Science: Advanced Materials and Devices
This study introduces a novel Alternating Current Field Measurement (ACFM) probe based on a Rotating Three-Pole Magnetization (RTPM) configuration integrated with a flexible magnetic coil array sensor. Conventional Eddy Current Testing (ECT) and Magnetic
Tran Thi Hoai Dung, Le Quang Trung, Nguyen Duc Khuong, Tran Mach Tuan Kiet, Honoka Fukuda, Naoya Kasai, Kouichi Sekino   +6 more
doaj   +1 more source

Background segmentation to enhance remote field eddy current signals [PDF]

, 2014
Pipe condition assessment is critical to avoid breakages. Remote Field Eddy Current (RFEC) is a commonly used technology to assess the condition of pipes. The nature of this technology induces some particular noise into its measurements.
Falque, R, Lingnau, DC, Miro, JV, Russell, DE, Vidal-Calleja, T   +4 more
core  

Pulsed magnetic flux leakage method for hairline crack detection and characterization

AIP Advances, 2018
The Magnetic Flux leakage (MFL) method is a well-established branch of electromagnetic Non-Destructive Testing (NDT), extensively used for evaluating defects both on the surface and far-surface of pipeline structures.
Chukwunonso K. Okolo, Turgut Meydan
doaj   +1 more source

Quantitative Nondestructive Testing of Wire Rope Using Image Super-Resolution Method and AdaBoost Classifier

Shock and Vibration, 2019
Magnetic flux leakage (MFL) detection is commonly employed to detect wire rope defects. However, nondestructive testing (NDT) of a wire rope still has problems.
Jigang Li, Juwei Zhang
doaj   +1 more source

Literature Review: Theory and Application of In-Line Inspection Technologies for Oil and Gas Pipeline Girth Weld Defection

Sensors, 2016
Girth weld cracking is one of the main failure modes in oil and gas pipelines; girth weld cracking inspection has great economic and social significance for the intrinsic safety of pipelines.
Qingshan Feng, Rui Li, Baohua Nie, Shucong Liu, Lianyu Zhao, Hong Zhang   +5 more
doaj   +1 more source

Development of electrical test procedures for qualification of spacecraft against EID. Volume 1: The CAN test and other relevant data [PDF]

A combined experimental and analytical program to develop system electrical test procedures for the qualification of spacecraft against damage produced by space-electron-induced discharges (EID) occurring on spacecraft dielectric outer surfaces is ...
Harlacher, B. L., Judge, R. J. R., Wilkenfeld, J. M.   +2 more
core   +1 more source

The MFL Testing Methods for Welded Pipes

Journal of Measurement Science and Instrumentation, 2011
Steel pipes are categorized into seamless pipes and welded pipes,and particularly the welded pipes’ NDT（Non-Destructive Testing）has been a challenging problem.In the case,on the basis of the presentation of welded pipes,the analysis of its relevant ...
Yan-hua SUN, Jian-bo WU, Yi-hua KANG
doaj