Numerical Study of Vibration Characteristics for Sensor Membrane in Transformer Oil

Membrane is the most important element of extrinsic Fabry-Perot interferometer sensors. Studying relationship between working medium viscosity and membrane vibration characteristics are critical to sensor design because transformer oil will cause viscous loss during vibration. The numerical investigation in performed based on finite method. Besides, effect energy caused by examined. It firstly showed that has highest sensitivity for first-order mode, reduces fundamental frequency 60%. Subsequently, when heat considered, amplitude less than one-fifth without loss. a more significant velocity temperature fields close natural frequency. Finally, remarkable impact time domain response. Mechanical converted into thermal gradually decrease with time. revealed, which would be an oil-immersed design.