Analysis of Ultimate Bearing Capacity of Quartz Crystal Based Load Sensor

Quartz crystal resonators (QCRs) are widely used in electron device, engineering machinery, and health monitoring. In practical application of QCRs based load sensors, the ultimate force bearing capacity of the quartz crystal should be checked during the design stage. In this work, we carry out both FEM simulations and experiments to analysis the ultimate bearing capacity of the rectangle quartz crystal in the QCRs. The buckling critical force of rectangle quartz with different length is tested under compression. The anisotropic effect is discussed compare with the isotropic model. This study is useful to guide the design and manufacturing of QCR based force sensor.