VISCOSITY AND DENSITY SENSING WITH ULTRASONIC PLATE WAVES

被引：57

作者：

MARTIN, BA ^{[1
]}

WENZEL, SW ^{[1
]}

WHITE, RM ^{[1
]}

机构：

[1] UNIV CALIF BERKELEY,ELECTR RES LAB,BERKELEY,CA 94720

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 1990年 / 22卷 / 1-3期

关键词：

D O I：

10.1016/0924-4247(89)80062-7

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Flexural plate waves propagating on thin silicon-nitride membranes in contact with viscous fluids are studied. The attenuation of the plate wave is shown in an approximate analysis to depend on the amount of viscous dissipation that occurs in the liquid. The effective mass in the viscous boundary layer increases the mass loading of the membrane over the amount due to density variations alone, resulting in a decrease in the frequency of maximum transmission. Measurements of the wave attenuation and frequency response of the plate-wave delay line in water-glycerol solutions demonstrate viscosity-density sensor applications in liquids with viscosities exceeding 1000 cP. © 1990.

引用

页码：704 / 708

页数：5

共 6 条

[1]

[Anonymous], 1967, RAYLEIGH LAMB WAVES

[2] FLUID PROPERTY EVALUATION BY PIEZOELECTRIC-CRYSTALS OPERATING IN THE THICKNESS SHEAR MODE [J].