Vibration character analysis of magnetic pipe for electronic anti-fouling system

Abstract

The anti-fouling mechanism of electronic anti-fouling(EAF) system using on the magnetic pipe is still not all clear as yet because of the electromagnetic shielding function of the pipe. In the present study the vibration of the magnetic pipe caused by alternating electromagnetic field was investigated as the anti-fouling force from EAF system using on the magnetic pipe. The relation between the vibration frequency of the pipe and excitation signal frequency was studied by experimental method. The vibration frequency of the pipe was detected by a three-dimensional laser scanning vibrometer. The experiment results supposed that the vibration frequency of the pipe was double the excitation signal frequency, and this conclusion meets with magnetostriction theory. Furthermore, another experiment was carried out to verify that the resonant frequency of the magnetic pipe can be controlled by the excitation signal frequency. This method is useful to the vibration performance optimization for EAF system.