摘要
针对现有矩形IDT带宽窄的不足,研究宽频带梯形叉指换能器(trapezoidal interdigital transducer,TIDT)。采用有限元分析方法对TIDT的尺寸进行结构优化设计,并对设计的TIDT进行性能测试,通过实验研究了TIDT用于结构损伤检测的初步应用。结果表明,TIDT在实际应用中进一步提高了损伤识别精度,具有广泛的应用前景。
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 frequ ency 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.
作者
王自平
钱磊
费跃
陈良彬
郝东晖
Wang Ziping;Qian Lei;Fei Yue;Chen Liangbin;Hao Donghui(Research on Structural Health Management of Critical Components,Faculty of Civil Engineering and Mechanics,Jiangsu University,Zhenjiang 212013,China)
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2020年第11期3790-3795,共6页
Rare Metal Materials and Engineering
基金
National Natural Science Foundation of China(11872191,11520101001)
Postgraduate Research&Practice Innovation Program of Jiangsu Province(KYCX19_1578)。
关键词
梯形叉指换能器
结构优化设计
结构健康监测
trapezoidal interdigital transducer
structural optimization design
structure health monitoring
