An ultrasonic signal acquisition method of ferromagnetic materials based on similar matrix blind source separation
by Lin Zhu; Minping Jia; Guangming Guo
International Journal of Materials and Product Technology (IJMPT), Vol. 63, No. 3, 2021

Abstract: In order to overcome the problems of low signal-to-noise ratio, low efficiency and poor signal richness in ultrasonic signal acquisition of ferromagnetic materials, a new ultrasonic signal acquisition method based on similar matrix blind source separation is proposed. The blind source separation is carried out to remove the noise of the ultrasonic signal of ferromagnetic materials. The basic electromagnetic field equation, the alternating electromagnetic field control equation and the basic acoustic field equation are used to achieve high-quality ultrasonic signal acquisition of ferromagnetic materials. The experimental results show that the denoising effect of the proposed method is good, the signal-to-noise ratio can reach 25 dB~30 dB, the acquisition efficiency is higher, and the overall application time can be controlled within 0.2 s.

Online publication date: Thu, 23-Sep-2021

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