Research on the Optimal Design and Application of Wideband TIDT Structures
Research on the Optimal Design and Application of Wideband TIDT Structures
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宽带TIDT结构优化设计及应用研究
DOI：
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发表时间：
2020
影响因子：
0.7
通讯作者：
Hao Donghui
中科院分区：
文献类型：
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作者：
Wang Ziping;Qian Lei;Fei Yue;Chen Liangbin;Hao Donghui
叉指换能器（IDT）是由声表面波器件发展而来的，由于其工作频率、频带宽可调、损耗低等特点，已逐渐应用于结构健康监测系统。因此，它在智能材料和结构方面具有广阔的应用前景。针对现有矩形叉指换能器带宽窄的缺点，本文研究了宽带梯形叉指换能器(TIDT)。采用有限元分析方法对TIDT结构进行优化，并测试TIDT性能。通过实验研究了TIDT在结构损伤检测中的初步应用。结果表明，TIDT在实际应用中提高了损伤识别精度，具有广阔的应用前景。
The interdigital transducer (IDT), developed from surface acoustic wave devices, has been gradually applied to structural health monitoring systems due to its operating frequency, adjustable frequency bandwidth and low loss. Therefore, it has a wide application prospect in smart materials and structures. In this paper, the wideband trapezoidal interdigital transducer (TIDT) was studied for the shortage, narrow bandwidth, of the existing rectangular IDT. The finite element analysis method was used to optimize the TIDT structure, and the TIDT performance was tested. The preliminary application of TIDT for structural damage detection was studied by experiments. The results show that TIDT improves damage recognition accuracy in practical applications and has broad application prospects.