Department of Civil and Environmental Engineering, Technical University of Catalonia (UPC), Jordi Girona 1-3, 08034 Barcelona, Spain.
Department of Reinforced Concrete Structures and Geotechnical Engineering, Vilnius Gediminas Technical University, Saulėtekio al. 11, 10221 Vilnius, Lithuania.
Sensors (Basel). 2021 Mar 5;21(5):1818. doi: 10.3390/s21051818.
The present work is a comprehensive collection of recently published research articles on Structural Health Monitoring (SHM) campaigns performed by means of Distributed Optical Fiber Sensors (DOFS). The latter are cutting-edge strain, temperature and vibration monitoring tools with a large potential pool, namely their minimal intrusiveness, accuracy, ease of deployment and more. Its most state-of-the-art feature, though, is the ability to perform measurements with very small spatial resolutions (as small as 0.63 mm). This review article intends to introduce, inform and advise the readers on various DOFS deployment methodologies for the assessment of the residual ability of a structure to continue serving its intended purpose. By collecting in a single place these recent efforts, advancements and findings, the authors intend to contribute to the goal of collective growth towards an efficient SHM. The current work is structured in a manner that allows for the single consultation of any specific DOFS application field, i.e., laboratory experimentation, the built environment (bridges, buildings, roads, etc.), geotechnical constructions, tunnels, pipelines and wind turbines. Beforehand, a brief section was constructed around the recent progress on the study of the strain transfer mechanisms occurring in the multi-layered sensing system inherent to any DOFS deployment (different kinds of fiber claddings, coatings and bonding adhesives). Finally, a section is also dedicated to ideas and concepts for those novel DOFS applications which may very well represent the future of SHM.
本工作是对基于分布式光纤传感器（DOFS）进行结构健康监测（SHM）研究的最新文献的综合收集。后者是一种新兴的应变、温度和振动监测工具，具有很大的潜力，例如其非侵入性、准确性、易于部署等。其最先进的特点是能够进行具有非常小空间分辨率（小至 0.63mm）的测量。本文旨在向读者介绍、告知和建议各种 DOFS 部署方法，以评估结构继续执行其预期功能的剩余能力。通过将这些最近的努力、进展和发现收集在一个地方，作者旨在为实现有效的 SHM 做出贡献。目前的工作采用了一种允许单独查阅任何特定 DOFS 应用领域的方式，即实验室实验、建筑环境（桥梁、建筑物、道路等）、岩土工程结构、隧道、管道和风力涡轮机。在此之前，围绕任何 DOFS 部署中固有多层传感系统中应变传递机制的研究进展，构建了一个简要的部分（不同种类的光纤包层、涂层和粘结剂）。最后，还为那些可能代表 SHM 未来的新型 DOFS 应用的想法和概念专门开辟了一个部分。
