Results 251 to 260 of about 54,858 (331)
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Applied Optics, 2023
We propose a sensitivity-enhanced fiber Bragg grating (FBG) magnetic field sensor for magnetic flux leakage (MFL) detection. The testing system consists of the FBG, suspended strain concentration structure, and two ceramic tubes bonded on a Terfenol-D ...
Q. Qin +5 more
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We propose a sensitivity-enhanced fiber Bragg grating (FBG) magnetic field sensor for magnetic flux leakage (MFL) detection. The testing system consists of the FBG, suspended strain concentration structure, and two ceramic tubes bonded on a Terfenol-D ...
Q. Qin +5 more
semanticscholar +3 more sources
Pulsed magnetic flux leakage techniques for crack detection and characterisation
Sensors and Actuators A: Physical, 2006Magnetic flux leakage (MFL) techniques have been widely used for non-intrusively inspecting steel installations by applying magnetization. In the situations where defects may take place on the near and far surfaces of the structure under inspection, current MFL techniques are unable to determine their approximate size. Consequently, an extra transducer
Ali Sophian, Gui Yun Tian, Sofiane Zairi
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IEEE Sensors Journal, 2022
Cracks that may cause pipeline cracking and leakage become the main risk of in-service pipelines after conventional metal loss defects have been detected.
Yue Long +6 more
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Cracks that may cause pipeline cracking and leakage become the main risk of in-service pipelines after conventional metal loss defects have been detected.
Yue Long +6 more
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NDT & E International, 2017
Abstract Pipelines are an important transportation medium for petroleum and chemical products, but defects in the pipelines can present hidden dangers and affect the safe operation of the pipeline. The traditional pipeline magnetic flux leakage (MFL) scanning technique generally adopts the axial magnetization mode, which has increased the difficulty ...
Dehui Wu +3 more
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Abstract Pipelines are an important transportation medium for petroleum and chemical products, but defects in the pipelines can present hidden dangers and affect the safe operation of the pipeline. The traditional pipeline magnetic flux leakage (MFL) scanning technique generally adopts the axial magnetization mode, which has increased the difficulty ...
Dehui Wu +3 more
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Weak Magnetic Flux Leakage Detection and Numerical Method Under Inclined Pressure Conditions
IEEE Transactions on Magnetics, 2023Weak magnetic flux leakage detection is a recently emerged and widely used stress detection technique for ferromagnetic materials. It has been used to analyze the stress in relation to the ferromagnetic material because of the change in the measurement ...
Shao-ming Zhang +4 more
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Pipeline Magnetic Flux Leakage Image Detection Algorithm Based on Multiscale SSD Network
IEEE Transactions on Industrial Informatics, 2020In order to solve the problem of low detection accuracy of small targets in the SSD detection algorithm, a pipeline magnetic flux leakage image detection algorithm based on multiscale SSD network is proposed in this paper. The dilated convolution and attention residual module are introduced into the SSD algorithm to fuse the low-resolution high ...
Lijian Yang, Zhujun Wang, Songwei Gao
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IEEE transactions on industrial electronics (1982. Print), 2023
Defect size quantification plays a vital role in pipeline magnetic flux leakage detection system. However, most existing methods suffer from poor applicability and low precision due to the complex industrial process.
Lei Wang +4 more
semanticscholar +1 more source
Defect size quantification plays a vital role in pipeline magnetic flux leakage detection system. However, most existing methods suffer from poor applicability and low precision due to the complex industrial process.
Lei Wang +4 more
semanticscholar +1 more source
The influence of magnetic head’s pose on magnetic flux leakage detection
International Journal of Applied Electromagnetics and Mechanics, 2020As a high-sensitivity magnetic sensor, the magnetic head has been gradually applied to non-destructive testing. Compared with the single coil and the coil with an iron core, the magnetic core can converge the weak leakage magnetic field because it can form a magnetic circuit to transmit the leakage field to the coil wound thereon.
Tang, Jian +3 more
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Image recognition model of pipeline magnetic flux leakage detection based on deep learning
Corrosion reviews, 2023Deep learning algorithm has a wide range of applications and excellent performance in the field of engineering image recognition. At present, the detection and recognition of buried metal pipeline defects still mainly rely on manual work, which is ...
Zhenchang Xu +5 more
semanticscholar +1 more source