Development of Ultrasonic Guided Wave Transducer for Monitoring of High Temperature Pipelines
Development of Ultrasonic Guided Wave Transducer for Monitoring of High Temperature Pipelines
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DOI：
10.3390/s19245443
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发表时间：
2019-12-02
期刊：
影响因子：
3.9
通讯作者：
Gan, Tat-Hean
中科院分区：
文献类型：
--
作者：
Dhutti, Anurag;Tumin, Saiful Asmin;Gan, Tat-Hean
高温（HT）超声传感器是越来越感兴趣的结构健康监测（SHM）的结构在恶劣的环境中运行。本文重点介绍了一种用于高温管道超声导波SHM的高温压电晶片主动传感器（HT-PWAS）的研制。PWAS使用Y切割磷酸镓（GaPO 4）制造，以在高达600摄氏度的温度下工作的管道上产生扭转导波模式。对PWAS进行了一些建立信任测试。进行HT机电阻抗（EMI）谱以验证在高温和长时间段（>1000 h）下的压电性能。采用激光多普勒振动仪（LDV）验证振动模式。开发了GaPO 4 PWAS的有限元模型，以模拟PWAS的机电行为和温度升高的影响，并使用EMI和LDV实验数据进行了验证。这项研究表明，磷酸镓的应用导波SHM的管道，并提出了一个模型，可用于评估不同的传感器设计HT应用。
High-temperature (HT) ultrasonic transducers are of increasing interest for structural health monitoring (SHM) of structures operating in harsh environments. This article focuses on the development of an HT piezoelectric wafer active sensor (HT-PWAS) for SHM of HT pipelines using ultrasonic guided waves. The PWAS was fabricated using Y-cut gallium phosphate (GaPO4) to produce a torsional guided wave mode on pipes operating at temperatures up to 600 degrees C. A number of confidence-building tests on the PWAS were carried out. HT electromechanical impedance (EMI) spectroscopy was performed to characterise piezoelectric properties at elevated temperatures and over long periods of time (>1000 h). Laser Doppler vibrometry (LDV) was used to verify the modes of vibration. A finite element model of GaPO4 PWAS was developed to model the electromechanical behaviour of the PWAS and the effect of increasing temperatures, and it was validated using EMI and LDV experimental data. This study demonstrates the application of GaPO4 for guided-wave SHM of pipelines and presents a model that can be used to evaluate different transducer designs for HT applications.