利用高分子压电薄膜设计声辐射模态传感器

Design radiation mode sensor using PVDF film

首先对声辐射模态进行改进,使声辐射模态形状在中、低频时与频率无关。然后在此基础上,以振动梁为例,提出通过设计特定形状的高分子电压薄膜作为传感器测量声辐射模态的伴随系数。实验结果表明这种声辐射模态传感器的设计是可行的。

A new technique to improve on radiation modes is developed, by which radiation mode shapes are of frequency independent at middle and low frequencies. With an example of vibrating beam, the adjoint coefficient of the radiation modes can be measured by using shaped PVDF sensor. The experimental results show that this new type of radiation mode sensor is available.