嵌埋式偏振光纤传感器用于电流变材料可控结构的振动测试

Embedded Polarimetric Fiber Optic Sensor for Vibration Sensing in Electrorheological Material Controllable Structures

电流变材料结构的动态特性随外加电场而改变，使之成为重要可控结构．本文研究了嵌埋式偏振光纤传感器在该类结构振动测试中的应用．讨论了有关问题并观察到了结构自然频率及模态振幅衰减随外加电场的改变．实验证明，该方法具有抗电磁干扰，不接近结构表面等优点．

Structures containing electrorheological material are controllable because they have the capability to change their dynamic characteristics when an electrical field is applied. An embedded polarimetric fiber optic sensor was used as a vibration sensor in such environments. Several issues associated with this vibration sensing methodology were also discussed.Significant structural natural frequency and modal damping changes were observed with modification of an applied electrical field. The experiments show that the embedded polarimetric fiber optic sensor is immune from electromagnetic influence and moves the necessity of access to the outside surface of the structure.