Untersuchungen zur Anwendung eines CS-Impulswirbelstromverfahrens zur zerstörungsfreien Prüfung / Investigations on the application of pulsed eddy current method in non destructive testing using controlled signals (CStechnique) Etudes pour l’utilisation de la methode des courants de Foucault a’impulsions controllées (technique CS) pour essais non destructifs

1983 ◽  
Vol 25 (9) ◽  
pp. 306-310
Author(s):  
H.-A. Crostack ◽  
J. Nehring
Keyword(s):  
Eddy Current ◽  
Current Method ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Eddy Current Method ◽  
Pulsed Eddy Current ◽  
Non Destructive

scholarly journals Non–Destructive Testing of Conductive Material by Eddy Current Air Probe Based on Swept Frequency

2015 ◽  
Vol 66 (3) ◽  
pp. 174-177 ◽  
Author(s):  
Andrea Štubendeková ◽  
Ladislav Janoušek
Keyword(s):  
Numerical Model ◽  
Eddy Current ◽  
Current Method ◽  
Wide Frequency Range ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Eddy Current Method ◽  
Exciting Coil ◽  
Non Destructive ◽  
2D Numerical Model

Abstract This article deals with non-destructive testing of conductive materials by eddy current method based on swept frequency. A 2D numerical model of eddy current air-core probe was created in the LTspice software at first. The probe consists of two coils: exciting coil and receiving. The probe is positioned in air in this case. Experimental and calculated frequency responses of the probe are obtained within a wide frequency range using swept frequency in order to validate the model. Frther a 3D model used for non-destructive testing of austenitic steel plate with three electro-discharge machined notches is then developed accordingly. Results of measurement are compared with 3D numerical model using COMSOL Multiphysics software.

scholarly journals Use of non-destructive eddy current technique to detect simulated corrosion of aircraft structures

2020 ◽  
Vol 64 (2) ◽  
pp. 52-58
Author(s):  
M. Janovec ◽  
J. Čerňan ◽  
F. Škultéty
Keyword(s):  
Eddy Current ◽  
Current Method ◽  
Experimental Sample ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Eddy Current Method ◽  
Aircraft Structures ◽  
Aluminum Sheets ◽  
Riveted Joints ◽  
Non Destructive

AbstractThe article deals with the issue of non-destructive testing of riveted joints. In the article, the authors used a non-destructive eddy current array technique, which was applied to detect simulated corrosion in the field of aircraft riveted joints of aluminum sheets. In aircraft maintenance, the eddy current method is used to control the outer surface of the aircraft skin, especially the areas around the riveted joints. This method makes it possible to detect hidden cracks and corrosion that may occur during aircraft operation. Especially hidden are hidden cracks and corrosion of aircraft structures, which cannot be detected during a visual inspection of the aircraft. The aim of the experimental measurements was to reveal simulated corrosion in the area of riveted joints formed on the experimental sample. Corrosion was simulated by gluing aluminum powder to the surface of the aluminum sheets from which the sample was made. The simulated corrosion in the second and third layers of the riveted sample was reliably detected. The settings, the method of control and the results of measurements are given in the article in the experimental part and the results of measurements. Measurements were performed using a defectoscope with an ECA measurement module, with appropriate measuring probes suitable for this type of inspection.

scholarly journals Non-destructive testing of Al-Mg alloys by using the eddy-current method

2017 ◽  
Vol 106 ◽  
pp. 03007 ◽  
Author(s):  
Sergey Dmitriev ◽  
Alexey Ishkov ◽  
Alexander Katasonov ◽  
Vladimir Malikov ◽  
Anatoly Sagalakov
Keyword(s):  
Eddy Current ◽  
Current Method ◽  
Mg Alloys ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Eddy Current Method ◽  
Non Destructive ◽  
Al Mg Alloys

scholarly journals Quantitative evaluation of crack depths and angles for pulsed eddy current non-destructive testing

2019 ◽  
Vol 102 ◽  
pp. 180-188 ◽  
Author(s):  
Faris Nafiah ◽  
Ali Sophian ◽  
Md Raisuddin Khan ◽  
Ilham Mukriz Zainal Abidin
Keyword(s):  
Quantitative Evaluation ◽  
Eddy Current ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Pulsed Eddy Current ◽  
Non Destructive

scholarly journals Physic perspective fusion of electromagnetic acoustic transducer and pulsed eddy current testing in non-destructive testing system

2020 ◽  
Vol 378 (2182) ◽  
pp. 20190608
Author(s):  
Wei Guo ◽  
Bin Gao ◽  
Gui Yun Tian ◽  
Dan Si
Keyword(s):  
Eddy Current ◽  
Surface Defects ◽  
Eddy Current Testing ◽  
Non Destructive Testing ◽  
Electromagnetic Acoustic Transducer ◽  
Destructive Testing ◽  
Current Testing ◽  
Pulsed Eddy Current ◽  
Acoustic Transducer ◽  
Non Destructive

Comprehensive non-destructive testing (NDT) for pipelines is a critical and challenging task. This paper proposes a novel physic perspective fusion NDT method of electromagnetic acoustic transducer (EMAT) and pulsed Eddy current testing (PECT) for detecting hybrid defects. This transceiver-integrated fusion sensor structure can simultaneously excite ultrasound and pulsed eddy current. Therefore, the generated ultrasound is applied to detect deep defects, while the eddy current detects surface defects. The theoretical derivation of EMAT and PECT fusion mechanism has been developed for analysis and interpretation of the results. In addition, numerical simulation on the detection of hybrid defects including surface defects with different width, depth and multiple bottom-thinning defects has been conducted. Experiments on both ferromagnetic and non-ferromagnetic material verify the feasibility of composite detection. Finally, tests have been validated on pipeline with weld defects, and the results show that the composite inspection method is capable of monitoring thickness variations and inspecting surface defects. This article is part of the theme issue ‘Advanced electromagnetic non-destructive evaluation and smart monitoring’.

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