Wireless Module for Nondestructive Testing/Structural Health Monitoring Applications Based on Solitary Waves
Wireless Module for Nondestructive Testing/Structural Health Monitoring Applications Based on Solitary Waves
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DOI：
10.3390/s20113016
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发表时间：
2020-05
期刊：
影响因子：
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通讯作者：
R. Misra;H. Jalali;Samuel J. Dickerson;P. Rizzo
中科院分区：
文献类型：
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作者：
R. Misra;H. Jalali;Samuel J. Dickerson;P. Rizzo
近年来，人们对使用高度非线性孤立波（HNSW）进行无损评估和结构健康监测应用越来越感兴趣。 HNSW 是可以在高度非线性系统（例如赫兹接触中的颗粒粒子）中形成和传播的机械波。最简单的设置包括与要检查/监控的结构或材料进行干点接触的内置传感器。该换能器由单周期球形粒子阵列制成，能够激发和检测孤立波。传感器连接到数据采集系统，该系统控制传感器的功能并存储时间序列以供后处理。本文介绍了无线单元的设计和测试，该无线单元无需将传感器连接到复杂的测试设备即可远程控制传感器。提供了使用新设计的无线单元和传统有线配置获得的测量结果之间的比较测试和分析。结果得到了分析模型的证实，该模型预测了孤立波与不同模量材料之间的动态相互作用。给出了所提出的无线平台的优点和局限性以及对未来发展的一些建议。
In recent years, there has been an increasing interest in the use of highly nonlinear solitary waves (HNSWs) for nondestructive evaluation and structural health monitoring applications. HNSWs are mechanical waves that can form and travel in highly nonlinear systems, such as granular particles in Hertzian contact. The easiest setup consists of a built-in transducer in drypoint contact with the structure or material to be inspected/monitored. The transducer is made of a monoperiodic array of spherical particles that enables the excitation and detection of the solitary waves. The transducer is wired to a data acquisition system that controls the functionality of the transducer and stores the time series for post-processing. In this paper, the design and testing of a wireless unit that enables the remote control of a transducer without the need to connect it to sophisticated test equipment are presented. Comparative tests and analyses between the measurements obtained with the newly designed wireless unit and the conventional wired configuration are provided. The results are corroborated by an analytical model that predicts the dynamic interaction between solitary waves and materials with different modulus. The advantages and limitations of the proposed wireless platform are given along with some suggestions for future developments.