Affiliation:
1. School of Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
2. Aquaspira Ltd., Unit 1-1a, Profile Park, Junction St., Colne, Nelson BB9 8AH, UK
Abstract
Distributed optical fibre sensing (DOFS)-based strain measurement systems are now routinely deployed across infrastructure health monitoring applications. However, there are still practical performance and measurement issues associated with the fibre’s attachment method, particularly with thermoplastic pipeline materials (e.g., high-density polyethylene, HDPE) and adhesive affixment methods. In this paper, we introduce a new optical fibre installation method that utilises a hot-weld encapsulation approach that fully embeds the fibre onto the pipeline’s plastic surface. We describe the development, application and benefits of the new embedment approach (as compared to adhesive methods) and illustrate its practical performance via a full-scale, real-world, dynamic loading trial undertaken on a 1.8 m diameter, 6.4 m long stormwater pipeline structure constructed from composite spiral-wound, steel-reinforced, HDPE pipe. The optical frequency domain reflectometry (OFDR)-based strain results show how the new method improves strain transference and dynamic measurement performance and how the data can be easily interpreted, in a practical context, without the need for complex strain transfer functions. Through the different performance tests, based on UK rail-road network transport loading conditions, we also show how centimetre- to metre-scale strain variations can be clearly resolved at the frequencies and levels consistent with transport- and construction-based, buried infrastructure loading scenarios.
Funder
Innovate UK’s Sustainable Innovation Fund
Reference36 articles.
1. Distributed dynamic fibre-optic strain monitoring of the behaviour of a skewed masonry arch railway bridge;Cocking;J. Civil. Struct. Health Monit.,2021
2. Evaluating in-service structural behaviour of an operational railway bridge using fibre optic sensing and structural model updating;Ye;Eng. Struct.,2021
3. Evaluation of distributed fibre optic sensors in structural concrete;Janiak;Mater. Struct.,2023
4. Distributed fiber optic sensing along driven ductile piles: Design, sensor installation and monitoring benefits;Monsberger;J. Civil. Struct. Health Monit.,2020
5. Bednarz, B., Popielski, P., Sieńko, R., Howiacki, T., and Bednarski, L. (2021). Distributed Fibre Optic Sensing (DFOS) for Deformation Assessment of Composite Collectors and Pipelines. Sensors, 21.
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