Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, Jiangsu, China.
State Key Laboratory of Structural Analysis for Industry Equipments, School of Aeronautics and Astronautics, Dalian University of Technology, Dalian 116024, Liaoning, China.
Ultrasonics. 2020 Jul;105:106114. doi: 10.1016/j.ultras.2020.106114. Epub 2020 Mar 2.
Lamb wave is widely recognized as one of the most encouraging tools for structural health monitoring (SHM) systems. In spite of many favourable characteristics of Lamb wave for SHM, real-world application of these systems is still quite limited. Beside the complexities derived from multi-modal, dispersive and multi-path characteristics of Lamb waves, one of the main challenges in Lamb wave based SHM is sensitivity of these systems to environmental and operational conditions (EOCs) parameters. This paper provides a state of the art review of the effects of EOCs parameters including: temperature, moisture, load, vibration and bonding (adhesive layer shear modulus and thickness, bond defects), on Lamb wave propagation. Moreover, this paper provides a summary of compensation strategies to account for EOCs effects as well as baseline free techniques. An objective is also to understand the future directions and areas requiring attention of the researchers.
兰姆波被广泛认为是结构健康监测 (SHM) 系统中最有前途的工具之一。尽管兰姆波在 SHM 中有许多优点，但这些系统的实际应用仍然相当有限。除了兰姆波的多模态、频散和多路径特性带来的复杂性之外，基于兰姆波的 SHM 的主要挑战之一是这些系统对环境和操作条件 (EOCs) 参数的敏感性。本文对 EOCs 参数（包括温度、湿度、负载、振动和粘结（粘结层剪切模量和厚度、粘结缺陷）对兰姆波传播的影响进行了综述。此外，本文还对补偿策略进行了总结，以考虑 EOCs 的影响以及无基线技术。本文的目的还在于了解未来的研究方向和需要注意的领域。
