Inspection of Pitting Corrosions on Weld Overlay Cladding Using Uniform and Rotating Eddy Current Testing

Ge, Jiuhao; Yu, Fanwei; Tomizawa, Takuma; Song, Haicheng; Yusa, Noritaka

doi:10.1109/tim.2021.3108521

Cited by 9 publications

(2 citation statements)

References 29 publications

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“…In recent years, this method has attracted considerable interest in many areas. The ECT methods are adopted for structural inspections, as in the case of turbine blades in the aerospace sector [1]- [3], tubes inspection [4]- [7], thickness measurement of laminates or coatings [8]- [10], identification of corrosion damages [11], verification of materials treatment techniques, bolt hole inspections. The relevant interest in ECT techniques for the analysis of the structural degradation status is due to the non-contact, low measurement time and high defect detection sensitivity.…”

Section: Introductionmentioning

confidence: 99%

An Eddy Current Probe for the Detection of Subsuperficial Defects of Any Orientation

Carere,

Sardellitti,

Bernieri

et al. 2024

IEEE Trans. Instrum. Meas.

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The paper introduces a novel 4-coils probe designed for Eddy Current Non-Destructive Testing on conductive materials. The key innovation lies in its capability to identify small surface and subsurface cracks regardless of their orientation. This is achieved through a suitable probe developed using two pairs of exciting coils that allow to generate two orthogonal magnetic fields. Using two excitation currents with an amplitude modulation approach, a rotation of the eddy currents induced in the conductive sample is obtained. This novel approach ensures effective detection of deep and arbitrarily oriented cracks. Both numerical tests and experimental evaluations were employed to assess the performance of the proposed probe. The probe's effectiveness was particularly observed in detecting a buried crack measuring 5 mm in length, 1 mm in height, and 0.1 mm in thickness at depths up to 3 mm in an aluminum plate. The results demonstrated the robustness of the probe's detection capability, affirming its potential as a reliable tool for nondestructive testing in industrial applications.

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Section: Introductionmentioning

confidence: 99%

An Eddy Current Probe for the Detection of Subsuperficial Defects of Any Orientation

Carere,

Sardellitti,

Bernieri

et al. 2024

IEEE Trans. Instrum. Meas.

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show abstract

“…Li et al developed a gradient-field pulsed uniform eddy current technique to detect and quantitatively evaluate subsurface corrosion [20]. Ge investigated the applicability of detecting pitting corrosions on stainless steel weld overlay cladding using uniform eddy current [21]. A new ECT probe called the Hoshi Probe was proposed which utilizes a uniform direction rotating eddy current to reduce noises [22].…”

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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Terahertz Non-destructive testing and imaging of corrosion in coated steel plates

Jiang

Zhao³

2023

Construction and Building Materials

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Inspection of Pitting Corrosions on Weld Overlay Cladding Using Uniform and Rotating Eddy Current Testing

Cited by 9 publications

References 29 publications

An Eddy Current Probe for the Detection of Subsuperficial Defects of Any Orientation

An Eddy Current Probe for the Detection of Subsuperficial Defects of Any Orientation

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

Terahertz Non-destructive testing and imaging of corrosion in coated steel plates

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