Gitis Alexander, Sauer Dirk Uwe
Electrochemical Energy Conversion and Storage Systems Group, Institute for Power Electronics and Electrical Drives (ISEA), RWTH Aachen University, Germany; Jülich Aachen Research Alliance, JARA-Energy, Germany.
Electrochemical Energy Conversion and Storage Systems Group, Institute for Power Electronics and Electrical Drives (ISEA), RWTH Aachen University, Germany; Institute for Power Generation and Storage Systems (PGS), E.ON ERC, RWTH Aachen University, Germany; Jülich Aachen Research Alliance, JARA-Energy, Germany.
Ultrasonics. 2016 Sep;71:264-270. doi: 10.1016/j.ultras.2016.06.018. Epub 2016 Jun 28.
Requirements for ultrasonic horizontally polarized shear waves based viscosity sensors and their applicability for continuous in-line measurement are presented and discussed. The results reveal, that sensors using non-piezoelectric plates as well as wave guides and sensing surface have application-oriented advantages in corrosive and hot liquids. For such non-piezoelectric plate sensors, the dispersion relations are found and the linking equation among propagation velocity as well as attenuation coefficient and Newtonian liquid parameters are obtained. The findings show that in presence of viscous liquids the propagation parameters of horizontally polarized shear waves (HPSW) in non-piezoelectric plate change and a viscosity depending attenuation occurs. It is shown that the measurement sensitivity, in physical terms, of the investigated device highly depends on plate thickness, shear wave impedance of the plate material, and the shear wave impedance of the ambient liquid. Further, reasonable geometrical optimizations and suited plate materials are discussed.
介绍并讨论了基于超声水平极化剪切波的粘度传感器的要求及其在连续在线测量中的适用性。结果表明，使用非压电板以及波导和传感表面的传感器在腐蚀性和高温液体中具有面向应用的优势。对于此类非压电板传感器，找到了色散关系，并获得了传播速度、衰减系数与牛顿液体参数之间的联系方程。研究结果表明，在粘性液体存在的情况下，非压电板中水平极化剪切波（HPSW）的传播参数会发生变化，并出现与粘度相关的衰减。结果表明，从物理角度来看，所研究装置的测量灵敏度高度依赖于板厚、板材的剪切波阻抗以及周围液体的剪切波阻抗。此外，还讨论了合理的几何优化和合适的板材。
