Eddy Current Testing

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Songling Huang - One of the best experts on this subject based on the ideXlab platform.

  • Low-Frequency Eddy Current Testing
    New Technologies in Electromagnetic Non-destructive Testing, 2016
    Co-Authors: Songling Huang, Shen Wang
    Abstract:

    Eddy Current Testing is a nondestructive Testing method based on electromagnetic induction principle. The metal conductor is placed in an alternating magnetic field, and the Eddy Current will be induced. Hughes used the induced Current method to detect the different metals and alloys, explained the feasibility of using the Eddy Current to detect defects of the conductive material in 1879. However, after that for a long period of time, the Eddy Current Testing technology has developed slowly because there were no effective methods to suppress the interference factors.

  • The Pulsed Eddy Current Testing
    New Technologies in Electromagnetic Non-destructive Testing, 2016
    Co-Authors: Songling Huang, Shen Wang
    Abstract:

    As one kind of Eddy Current Testing technology, the pulsed Eddy Current Testing technology is based on the principle of electromagnetic induction and is used to detect the defects in conductive materials. The principle of pulsed Eddy Current Testing is basically the same as that of traditional Eddy Current Testing, and differences are the means of excitation and the signal analysis method.

  • The Remote-Field Eddy Current Testing
    New Technologies in Electromagnetic Non-destructive Testing, 2016
    Co-Authors: Songling Huang, Shen Wang
    Abstract:

    The remote-field Eddy Current (RFEC) Testing is a special Eddy Current Testing technology that utilizes the characteristics of the remote-field region of the Eddy Current to detect the defects and was applied in the inner inspection of small caliber pipeline first.

  • a new differential Eddy Current Testing sensor used for detecting crack extension direction
    Ndt & E International, 2011
    Co-Authors: Peng Xu, Songling Huang, Wei Zhao
    Abstract:

    In this paper a new differential Eddy Current Testing sensor is proposed which is composed of two planar circumferential gradient winding spiral coils. The Eddy Current Testing sensor can detect out the existence of crack in conductive material surface and furthermore the crack extension direction because of the circumferential gradient winding spiral structure of coil. We study the detection principle of crack extension direction and carry out experimental test. The test results show that the impedance of circumferential gradient winding coil mainly varies with crack extension direction and width. Based on impedance plane analysis we extract the features which can indicate the crack characteristics and study on the inverse quantitative evaluation of crack extension direction and crack width.

Shen Wang - One of the best experts on this subject based on the ideXlab platform.

  • The Pulsed Eddy Current Testing
    New Technologies in Electromagnetic Non-destructive Testing, 2016
    Co-Authors: Songling Huang, Shen Wang
    Abstract:

    As one kind of Eddy Current Testing technology, the pulsed Eddy Current Testing technology is based on the principle of electromagnetic induction and is used to detect the defects in conductive materials. The principle of pulsed Eddy Current Testing is basically the same as that of traditional Eddy Current Testing, and differences are the means of excitation and the signal analysis method.

  • Low-Frequency Eddy Current Testing
    New Technologies in Electromagnetic Non-destructive Testing, 2016
    Co-Authors: Songling Huang, Shen Wang
    Abstract:

    Eddy Current Testing is a nondestructive Testing method based on electromagnetic induction principle. The metal conductor is placed in an alternating magnetic field, and the Eddy Current will be induced. Hughes used the induced Current method to detect the different metals and alloys, explained the feasibility of using the Eddy Current to detect defects of the conductive material in 1879. However, after that for a long period of time, the Eddy Current Testing technology has developed slowly because there were no effective methods to suppress the interference factors.

  • The Remote-Field Eddy Current Testing
    New Technologies in Electromagnetic Non-destructive Testing, 2016
    Co-Authors: Songling Huang, Shen Wang
    Abstract:

    The remote-field Eddy Current (RFEC) Testing is a special Eddy Current Testing technology that utilizes the characteristics of the remote-field region of the Eddy Current to detect the defects and was applied in the inner inspection of small caliber pipeline first.

Damhuji Rifai - One of the best experts on this subject based on the ideXlab platform.

  • Challenges in improving the performance of Eddy Current Testing: Review
    Measurement & Control, 2018
    Co-Authors: Ahmed N Abdalla, Damhuji Rifai, Moneer A. Faraj, Fahmi Samsuri, Kharudin Ali, Yarub Al-douri
    Abstract:

    Eddy Current Testing plays an important role in numerous industries, particularly in material coating, nuclear and oil and gas. However, the Eddy Current Testing technique still needs to focus on t...

  • giant magnetoresistance sensors a review on structures and non destructive Eddy Current Testing applications
    Sensors, 2016
    Co-Authors: Damhuji Rifai, Ahmed N Abdalla, Ramdan Razali
    Abstract:

    Non-destructive Eddy Current Testing (ECT) is widely used to examine structural defects in ferromagnetic pipe in the oil and gas industry. Implementation of giant magnetoresistance (GMR) sensors as magnetic field sensors to detect the changes of magnetic field continuity have increased the sensitivity of Eddy Current techniques in detecting the material defect profile. However, not many researchers have described in detail the structure and issues of GMR sensors and their application in Eddy Current techniques for nondestructive Testing. This paper will describe the implementation of GMR sensors in non-destructive Testing Eddy Current Testing. The first part of this paper will describe the structure and principles of GMR sensors. The second part outlines the principles and types of Eddy Current Testing probe that have been studied and developed by previous researchers. The influence of various parameters on the GMR measurement and a factor affecting in Eddy Current Testing will be described in detail in the third part of this paper. Finally, this paper will discuss the limitations of coil probe and compensation techniques that researchers have applied in Eddy Current Testing probes. A comprehensive review of previous studies on the application of GMR sensors in non-destructive Eddy Current Testing also be given at the end of this paper.

  • Subsurface defects evaluation using Eddy Current Testing
    Indian Journal of Science and Technology, 2016
    Co-Authors: Damhuji Rifai, Noraznafulsima Khamsah, M Aizat, Ahmed N Abdalla, Muhd Fadzli
    Abstract:

    Background/Objectives: Eddy Current Testing is one of the most widely Non Destructive Evaluation (NDE) methods which utilized in the industry especially in oil and gas, aircraft, nuclear and coating industries. Experimental studies of Eddy Current Testing have emerged as an important approach alongside numerical. This paper is to design, fabricate and investigate the maximum Eddy Current Testing that can detect subsurface defect in the carbon steel S45C block. Methods/Statistical Analysis: The material of the artificial defect block is carbon steel (S45C) with dimension of 180mm (length) × 25mm (width) × 60mm (height). There are eight artificial defects which located 20mm parallel to the length of the block with 0.5mm diameter. The distance defect is located in between 0.5mm to 4.00mm from the surface of the artificial defect block. Weld probe with diameter size of 16mm and 9mm are used to perform the inspection. Findings: Experiments showed that the weld probe with diameter 16mm able to detect subsurface defect up to 4.0mm and 2.0mm for 9mm diameter weld probe. The optimum of Eddy Current Testing frequency for carbon steel S45C is depending on the defect distance from the material surface. Applications/Improvements: The results prove that the maximum depth of the subsurface can be measured by using Eddy Current Testing method, which is depending on the frequency of the exciting coil weld probe

Yihua Kang - One of the best experts on this subject based on the ideXlab platform.

Ahmed N Abdalla - One of the best experts on this subject based on the ideXlab platform.

  • Challenges in improving the performance of Eddy Current Testing: Review
    Measurement & Control, 2018
    Co-Authors: Ahmed N Abdalla, Damhuji Rifai, Moneer A. Faraj, Fahmi Samsuri, Kharudin Ali, Yarub Al-douri
    Abstract:

    Eddy Current Testing plays an important role in numerous industries, particularly in material coating, nuclear and oil and gas. However, the Eddy Current Testing technique still needs to focus on t...

  • giant magnetoresistance sensors a review on structures and non destructive Eddy Current Testing applications
    Sensors, 2016
    Co-Authors: Damhuji Rifai, Ahmed N Abdalla, Ramdan Razali
    Abstract:

    Non-destructive Eddy Current Testing (ECT) is widely used to examine structural defects in ferromagnetic pipe in the oil and gas industry. Implementation of giant magnetoresistance (GMR) sensors as magnetic field sensors to detect the changes of magnetic field continuity have increased the sensitivity of Eddy Current techniques in detecting the material defect profile. However, not many researchers have described in detail the structure and issues of GMR sensors and their application in Eddy Current techniques for nondestructive Testing. This paper will describe the implementation of GMR sensors in non-destructive Testing Eddy Current Testing. The first part of this paper will describe the structure and principles of GMR sensors. The second part outlines the principles and types of Eddy Current Testing probe that have been studied and developed by previous researchers. The influence of various parameters on the GMR measurement and a factor affecting in Eddy Current Testing will be described in detail in the third part of this paper. Finally, this paper will discuss the limitations of coil probe and compensation techniques that researchers have applied in Eddy Current Testing probes. A comprehensive review of previous studies on the application of GMR sensors in non-destructive Eddy Current Testing also be given at the end of this paper.

  • Subsurface defects evaluation using Eddy Current Testing
    Indian Journal of Science and Technology, 2016
    Co-Authors: Damhuji Rifai, Noraznafulsima Khamsah, M Aizat, Ahmed N Abdalla, Muhd Fadzli
    Abstract:

    Background/Objectives: Eddy Current Testing is one of the most widely Non Destructive Evaluation (NDE) methods which utilized in the industry especially in oil and gas, aircraft, nuclear and coating industries. Experimental studies of Eddy Current Testing have emerged as an important approach alongside numerical. This paper is to design, fabricate and investigate the maximum Eddy Current Testing that can detect subsurface defect in the carbon steel S45C block. Methods/Statistical Analysis: The material of the artificial defect block is carbon steel (S45C) with dimension of 180mm (length) × 25mm (width) × 60mm (height). There are eight artificial defects which located 20mm parallel to the length of the block with 0.5mm diameter. The distance defect is located in between 0.5mm to 4.00mm from the surface of the artificial defect block. Weld probe with diameter size of 16mm and 9mm are used to perform the inspection. Findings: Experiments showed that the weld probe with diameter 16mm able to detect subsurface defect up to 4.0mm and 2.0mm for 9mm diameter weld probe. The optimum of Eddy Current Testing frequency for carbon steel S45C is depending on the defect distance from the material surface. Applications/Improvements: The results prove that the maximum depth of the subsurface can be measured by using Eddy Current Testing method, which is depending on the frequency of the exciting coil weld probe

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