Reflection Coefficients of Plane Waves at a Seawater-magnetorheological Fluid Interface

5th International Conference on Mechanics and Mechatronics Research

机械制造;无线电电子学

Shen, Min^1 ; Cong, Bai^1

School of Mechanical Engineering and Automation, Wuhan Textile University, 1 Fangzhi Road, Hubei Province Wuhan

430073, China^1

关键词: A-plane;    Acoustic model;    Coating material;    Magnetorheological fluids (MRF);    Particle volume fractions;    Plane wave;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/417/1/012002/pdf
DOI  :  10.1088/1757-899X/417/1/012002

来源: IOP

【 摘 要 】

The Magnetorheological fluid (MRF) is a class of smart material with tunable acoustic properties and could be used as active sound coating material on underwater structure. This paper presents an acoustic model to investigate the reflection of a plane wave incidence at seawater-MRF interface. The acoustic model is developed by modelling the MRF as Biot's type porous material. In this paper, the effect of three major parameters of MRF material on the reflection coefficients are introduced. It is concluded that reflection coefficients can achieve low values by increasing shear modulus, particle volume fraction and decrease permeability.