Investigation of welded joints of aluminium alloys using subminiature eddy-current transducers

International Conference on Mechanical Engineering, Automation and Control Systems 2017

机械制造;无线电电子学;计算机科学

Dmitriev, S.F.^1 ; Ishkov, A.V.^2 ; Katasonov, A.O.^1 ; Malikov, V.N.^1 ; Sagalakov, A.M.^1

Altai State University, Lenina Av., 61, Barnaul

656049, Russia^1

Altai State Agricultural University, Krasnoarmeyskiy Av., 98, Barnaul

656049, Russia^2

关键词: Aluminium-magnesium alloys;    Eddy current transducers;    Measuring systems;    Signal-noise relation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/327/3/032018/pdf
DOI  :  10.1088/1757-899X/327/3/032018

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The authors developed a measuring system based on subminiaturized eddy-current transducers aimed at examining locally the defects of welded joints in aluminium-magnesium alloy plates connected by means of friction stir welding. The authors made a modification of the Delyann filter, which allowed them to increase considerably the signal-noise relations. The dependency of the eddy-current transducer response on defects was provided, i.e. concealed cuts and openings inside the welded joint, at the frequencies of 100-10000 Hz of the exciting winding.