Results 1 to 10 of about 4,031 (115)

Serial MTJ-Based TMR Sensors in Bridge Configuration for Detection of Fractured Steel Bar in Magnetic Flux Leakage Testing [PDF]

open access: yesSensors, 2021
Thanks to high sensitivity, excellent scalability, and low power consumption, magnetic tunnel junction (MTJ)-based tunnel magnetoresistance (TMR) sensors have been widely implemented in various industrial fields.
Zhenhu Jin   +3 more
doaj   +2 more sources

Image Registration for Visualizing Magnetic Flux Leakage Testing under Different Orientations of Magnetization [PDF]

open access: yesEntropy, 2023
The Magnetic Flux Leakage (MFL) visualization technique is widely used in the surface defect inspection of ferromagnetic materials. However, the information of the images detected through the MFL method is incomplete when the defect (especially for the ...
Shengping Li   +6 more
doaj   +2 more sources

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

open access: yesSensors, 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   +7 more
doaj   +2 more sources

Implementing Nitrogen Vacancy Center Quantum Sensor Technology for Magnetic Flux Leakage Testing [PDF]

open access: yesSensors
Ensuring the structural integrity of prestressed (PS) concrete is essential for the safety and longevity of infrastructure. Magnetic Flux Leakage (MFL) testing is a widely used non-destructive testing (NDT) method for detecting fractures in prestressing ...
Jonathan Villing   +4 more
doaj   +2 more sources

Theory and Application of Magnetic Flux Leakage Pipeline Detection

open access: yesSensors, 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   +4 more
doaj   +3 more sources

Low Frequency Electromagnetic Field Detection and its Signal Processing System

open access: yesJournal of Harbin University of Science and Technology, 2022
Ferromagnetic substrates of pressure equipment such as boilers, pressure vessels and high-pressure pipes are easy to be corroded, resulting in huge potential safety hazard.
SHEN Chang-yu   +4 more
doaj   +1 more source

Detection of Rail Defects Using NDT Methods

open access: yesSensors, 2023
The rapid development of high-speed and heavy-haul railways caused rapid rail defects and sudden failure. This requires more advanced rail inspection, i.e., real-time accurate identification and evaluation for rail defects. However, existing applications
Longhui Xiong   +4 more
doaj   +1 more source

Research on the Forward Solving Method of Defect Leakage Signal Based on the Non-Uniform Magnetic Charge Model

open access: yesSensors, 2023
Pipeline magnetic flux leakage inspection is widely used in the evaluation of material defect detection due to its advantages of having no coupling agent and easy implementation.
Pengfei Gao   +3 more
doaj   +1 more source

A Magnetic Flux Leakage and Magnetostrictive Guided Wave Hybrid Transducer for Detecting Bridge Cables

open access: yesSensors, 2012
Condition assessment of cables has gained considerable attention for the bridge safety. A magnetic flux leakage and magnetostrictive guided wave hybrid transducer is provided to inspect bridge cables.
Jiang Xu   +3 more
doaj   +1 more source

Enhancing Wire-Rope Damage Signals Based on a Radial Magnetic Concentrator Bridge Circuit

open access: yesSensors, 2022
Hall-effect sensors are used for the non-destructive testing of wire ropes owing to their low power consumption and high operation frequency. The high-speed operation of wire ropes causes vibration inclination at different frequencies, which makes it ...
Jie Tian   +5 more
doaj   +1 more source

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