Open AccessMagneto-acoustic investigation on steel samples
Author(s) -
O. Szabados,
R. Baki,
Zs,
Csincsi,
J. Somogyi Molnár,
Á. Pámer,
P. Szabó,
G. Pór
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/903/1/012040
Subject(s) - acoustics , microphone , signal (programming language) , lissajous curve , magneto , materials science , acoustic emission , yoke (aeronautics) , physics , computer science , magnet , engineering , loudspeaker , electrical engineering , optics , mechanics , flight control surfaces , aerodynamics , programming language
Experiments have been carried out using yoke for energizing alternating magnetic field in the steel samples. We used acoustic emission sensors and ultrasound microphone for recording acoustic signal born in the steel material. Results of experiments clearly show the presence of Acoustic Barkhausen noise. We are introducing graphs presenting dependence of acoustic time response signal on magnetic signal (inductance) in form of Lissajous curve. It is claimed that this new method gives more in-sigh in the material than the widely used simple RMS measurement of acoustic response.