Development and Research of a Surfactant Sensor for Measuring Mechanical Deformation

Currently, a promising direction in measuring technology is the creation of sensors that transmit information about the measured parameter using a radio channel. This article presents the results of a study of a sensor designed to measure inhomogeneous mechanical deformations (or stresses). The sensor consists of a structure, which is a Roberval parallelogram and a sensitive element (SE) on surface acoustic waves (SAW), attached to the "shoulders" of the structure. The Roberval parallelogram provides a linear dependence of the change in the surfactant velocity on the deformation. Due to the relatively small size of the deformed regions, within which measurements are made, both the deformation change and the resulting change in the surfactant velocity in the substrate space can be considered linearly dependent on the substrate coordinate. The authors proposed a new mathematical model of the sensitive element (SE). In the course of the experimental study, a fairly good agreement between the calculated and experimental dependences was obtained.