Magnetic Imaging of Sludge Outside Steam Generator Tube With Array Magnetoresistance Sensors

Bai, Yuewei; Ye, Chaofeng; Tao, Xinchen; Zhang, Na; Li, Xiaoguang

doi:10.1109/jsen.2020.3047822

Cited by 7 publications

(2 citation statements)

References 24 publications

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“…The bandwidth of the TMR sensor is up to hundreds of MHz, which is much higher than the conventional pickup coils. A large-scale TMR senso array applied for magnetic field imaging (MFI) also contributes to improving the spatial resolution in NDT [64,65] .…”

Section: Current Sensingmentioning

confidence: 99%

Developments and applications of tunneling magnetoresistance sensors

Yan

Zhou

Yang

et al. 2022

Tsinghua Sci. Technol.

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Magnetic sensors based on tunneling magnetoresistance (TMR) effect exhibit high sensitivity, small size, and low power consumption. They have gained a lot of attention and have potential applications in various domains.This study first introduces the development history and basic principles of TMR sensors. Then, a comprehensive description of TMR sensors linearization and Wheatstone bridge configuration is presented. Two key performance parameters, the field sensitivity and noise mechanisms, are considered. Finally, the emerging applications of TMR sensors are discussed.

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Section: Current Sensingmentioning

confidence: 99%

Developments and applications of tunneling magnetoresistance sensors

Yan

Zhou

Yang

et al. 2022

Tsinghua Sci. Technol.

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“…Chen et al developed an inversion algorithm for three-dimensional (3D) profile reconstruction of wall thinning defect in a double-layer region of a typical coolant pipe of nuclear power plants using pulsed eddy current method [28,29]. Bai et al proposed a probe with array tunnel magnetoresistance sensors for inspection of sludge outside the steam generator tube [30]. The bobbin pulsed eddy current array probe was designed to classify and evaluate inner and outer surface defects in nonferromagnetic tubes [31].…”

Section: Introductionmentioning

confidence: 99%

Rotating alternating current field measurement testing system with TMR arrays for arbitrary-angle crack on nonferromagnetic pipes

Zhao¹,

Li²,

Yuan³

et al. 2022

Meas. Sci. Technol.

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Nonferromagnetic pipes are widely used in power plants such as fluid transportation and heat exchanger devices. Due to the severe environments, including corrosion, high temperature, etc., it is subject to surface arbitrary-angle cracks. In view of this background, this paper proposed a rotating alternating current field measurement (RACFM) testing system for arbitrary-angle cracks in nonferromagnetic pipes. The RACFM pipe detection model is established and the unidirectional excitation coil and the orthogonal excitation coil are simulated separately. The testing system and the probe with tunnel magneto resistance (TMR) sensor arrays and flexible orthogonal excitation coils are built to detect cracks at different angles in the pipe. The simulation and experimental results reveal that the RACFM detection system has high sensitivity for arbitrary-angle cracks in the outer surface of the pipe, and it can effectively measure the lengths and angles of the cracks.

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A new serpentine array eddy current probe for steam generator tubes inspection

Zhao,

2024

Sensors and Actuators A: Physical

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Magnetic Imaging of Sludge Outside Steam Generator Tube With Array Magnetoresistance Sensors

Cited by 7 publications

References 24 publications

Developments and applications of tunneling magnetoresistance sensors

Developments and applications of tunneling magnetoresistance sensors

Rotating alternating current field measurement testing system with TMR arrays for arbitrary-angle crack on nonferromagnetic pipes

A new serpentine array eddy current probe for steam generator tubes inspection

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