Performance evaluation of rail-mounted quasi-distributed optical fiber sensors for monitoring track transitions

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Transportation Geotechnics Pub Date : 2025-01-17 DOI:10.1016/j.trgeo.2025.101487

Mahsa Gharizadehvarnosefaderani , Md. Fazle Rabbi , Cameron D. Stuart , Debakanta Mishra

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引用次数: 0

Abstract

Regular inspections of railroad tracks help ensure safe and cost-effective operating conditions. Inspection of track transitions is especially critical as these locations are subjected to high loads that can result in rapid deterioration. Optical Fiber Sensors (OFSs) represent one of the latest technologies for long-term, continuous structural health monitoring in harsh environments like railroad tracks. This paper presents findings from an ongoing research study evaluating the suitability of OFSs for monitoring and real-time condition assessment of track transitions. This paper reports on the laboratory and numerical modeling performance of the Fiber Bragg Grating (FBG) type of OFS. Data collected using FBG sensors are compared with those from conventional sensors such as strain gauges and Linear Variable Differential Transformers (LVDTs). The results confirm that rail mounted FBG sensors can accurately measure strain values under different levels of loading. Rail deflections calculated from these strain values match well with deflections measured using LVDTs.

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来源期刊

Transportation Geotechnics Social Sciences-Transportation

CiteScore

8.10

自引率

11.30%

发文量

194

审稿时长

51 days

期刊介绍： Transportation Geotechnics is a journal dedicated to publishing high-quality, theoretical, and applied papers that cover all facets of geotechnics for transportation infrastructure such as roads, highways, railways, underground railways, airfields, and waterways. The journal places a special emphasis on case studies that present original work relevant to the sustainable construction of transportation infrastructure. The scope of topics it addresses includes the geotechnical properties of geomaterials for sustainable and rational design and construction, the behavior of compacted and stabilized geomaterials, the use of geosynthetics and reinforcement in constructed layers and interlayers, ground improvement and slope stability for transportation infrastructures, compaction technology and management, maintenance technology, the impact of climate, embankments for highways and high-speed trains, transition zones, dredging, underwater geotechnics for infrastructure purposes, and the modeling of multi-layered structures and supporting ground under dynamic and repeated loads.