Research of layered composites by using subminiature eddy-current probes

1st International Scientific Practical Conference "Breakthrough Technologies and Communications in Industry"

工业技术（总论）;无线电电子学

Bagaev, A.A.^2 ; Ishkov, A.V.^2 ; Malikov, V.N.^1

Altai State University, Barnaul, Russia^1

Altai State Agricultural University, Barnaul, Russia^2

关键词: Alternating layers;    Dielectric layer;    Eddy current probes;    Layered composites;    Layered Structures;    Measuring systems;    Metal polymers;    Rectangular holes;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/483/1/012049/pdf
DOI  :  10.1088/1757-899X/483/1/012049

学科分类：工业工程学

来源: IOP

【 摘 要 】

On the basis of subminiature eddy-current probes, a measuring system is designed that allows scanning of composite materials for detection of small defects. The results of the study of discontinuity defects simulated in metal-polymer layered composites of aluminum-polyethylene-aluminum systems up to 10-layer composite are described. Composites were made by alternating layers of aluminum or copper foil, 20...100 μm thick, with layers of a film, 20 μm thick. Defects in the structure of the material were modeled by skipping or increasing the number of separate layers, and defects in continuity and bridges were modeled by cutting a round or rectangular hole in the foil or dielectric layer. Visual images of model defects are obtained by Fourier-transformer of the IENM-5FA device. The dependence of the eddy current probe signal on the presence of a defect in the layered structure is established.