An intelligent and multifunctional composite for drainage pipeline monitoring based on deformation and temperature sensitivity

IF 7.4 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Tunnelling and Underground Space Technology Pub Date : 2025-09-16 DOI:10.1016/j.tust.2025.107088

Chao Zhang , Jie Wen , Cuixia Wang , Yangyang Xia , Xinxin Sang , Hongyuan Fang , Niannian Wang

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引用次数: 0

Abstract

Digital twins are widely used in structural health monitoring, but their application in underground drainage pipelines is limited due to the harsh environment. This study presents a smart pipeline composite based on ultraviolet cured-in-place pipe (UV-CIPP) technology, integrating multi-walled carbon nanotubes (MWCNTs) with glass fibers to enhance both mechanical strength and sensing capabilities. Mechanical and electrical tests examined the effects of MWCNTs concentration, sensor layer configuration, and resin content on the material’s properties. The composite achieved a bending strength of 574.14 ± 23.84 MPa and demonstrated high sensitivity to real-time damage monitoring, with pre- and post-damage sensitivity reaching 14.76 and 46.40, respectively, at 0.2 wt% MWCNTs. In addition, the material exhibited a water temperature sensitivity of −10.67 % °C⁻¹, with good stability. It also demonstrated the ability to monitor water levels and provide heating for pipe de-icing. In summary, this composite material holds great potential for applications in pipeline structural health monitoring and multifunctional systems.

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一种基于变形和温度敏感性的智能多功能排水管道监测系统

数字孪生体在结构健康监测中应用广泛，但由于环境恶劣，其在地下排水管道中的应用受到限制。本研究提出了一种基于紫外固化原位管（UV-CIPP）技术的智能管道复合材料，将多壁碳纳米管（MWCNTs）与玻璃纤维相结合，以提高机械强度和传感能力。机械和电气测试检查了MWCNTs浓度、传感器层配置和树脂含量对材料性能的影响。该复合材料的抗弯强度为574.14±23.84 MPa，对实时损伤监测具有很高的灵敏度，当添加0.2 wt% MWCNTs时，损伤前和损伤后的灵敏度分别达到14.76和46.40。此外，该材料的水温敏感性为−10.67%°C−1，具有良好的稳定性。它还展示了监测水位和为管道除冰提供加热的能力。综上所述，该复合材料在管道结构健康监测和多功能系统中具有很大的应用潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Tunnelling and Underground Space Technology 工程技术-工程：土木

CiteScore

11.90

自引率

18.80%

发文量

454

审稿时长

10.8 months

期刊介绍： Tunnelling and Underground Space Technology is an international journal which publishes authoritative articles encompassing the development of innovative uses of underground space and the results of high quality research into improved, more cost-effective techniques for the planning, geo-investigation, design, construction, operation and maintenance of underground and earth-sheltered structures. The journal provides an effective vehicle for the improved worldwide exchange of information on developments in underground technology - and the experience gained from its use - and is strongly committed to publishing papers on the interdisciplinary aspects of creating, planning, and regulating underground space.