Love波飞机结冰传感器研究

 Love波结冰传感器有望应用于飞机结冰预测与监测，其通过Love波在导波层中的传播变化，来敏感导波层表面冰的厚度以及状态变化。在Zimmermann理论基础上，根据Love波结冰传感器实际结构，针对导波层为冰层及压电材料为ST90°X石英的实际实验情况进行了仿真计算，计算得到了冰层厚度与相速之间的特性关系，以及冰层厚度对灵敏度的影响，并与N.Bari等的灵敏度理论的计算结果进行了比较，结果表明Love波结冰传感器的灵敏度与相速的理论计算是正确的。通过初步的实验对Love波结冰传感器进行原理性的验证研究，实验结果表明Love波结冰传感器可以明显区分空气、水和冰的状态，实验数据符合理论计算的结果。

Study of Love Wave Aircraft Ice Sensor

Love wave aircraft ice sensor is likely to be applied to aircraft icing forecast and detection. Through detecting the Love wave changes propagating in the guiding layer, changes in ice thickness and ice physical state can be obtained. Based on Zimmermann’s theory, according to the ice detector structure, the relations between ice thickness and Love wave velocity were computed, and the impact of ice thickness of the guiding layer on detection sensitivity was studied in a practical experimental setting in which the guiding layer was ice and the substrate was ST90°X quartz. The computed results based on Zimmermann’s theory were compared with the computed results based on N. Bari’s sensitivity theory, and the comparison indicated the Love wave ice sensor sensitivity computations were correct. This preparatory experiment was carried out to prove the Love wave ice sensor principle. The results show that Love wave ice sensor can distinguish air, water, and ice clearly, and the experimental data are in agreement with the computed results.