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CASE STUDIES
HR-DAS
Our distributed acoustic sensing platforms are used in a range of scientific, engineering, and industrial applications, providing strain and vibration measurements to support both operational decision-making and fundamental research. These case studies summarise collaborative projects with leading research institutions, government agencies, and industry partners, demonstrating how our technologies contribute to advancing applied monitoring and enabling new scientific discoveries. By integrating laboratory experiments, field deployments, and cross-disciplinary collaborations, these studies illustrate how HR-DAS and xDAS facilitate breakthroughs in geophysics, materials science, and structural engineering, while also delivering practical solutions for asset integrity, safety, and infrastructure resilience.
STRUCTURAL
ANALYSIS
OF FRP BRIDGE
A joint project with the University of Southampton (UoS) to conduct structural testing on a concrete deck with a novel fibre-reinforced polymer (FRP) girder, simulating a section of a UK road bridge. The project aimed to explore the potential of SensiPhi's high-resolution distributed acoustic sensors (HR-DAS) for structural health monitoring. The HR-DAS system successfully measured strain distributions comparable to those of traditional gauges, marking a significant step toward using this technology for in-situ structural health monitoring of road bridges.
CONCRETE SLAB CHARACTERISATION
A collaborative study with the Infrastructure Group at the University of Southampton examined the effects of rebar corrosion in reinforced concrete. Rebar corrosion, the rusting of steel reinforcement within concrete, is a significant contributor to structural degradation. It arises when the concrete’s protective alkaline environment is compromised by chlorides or carbon dioxide, which break down the passive layer on the steel surface. In this project, our High-Resolution Distributed Acoustic Sensing (HR-DAS) technology was used to assess how corrosion influences strain distribution across a 1700 × 1700 mm² concrete slab under load.
MAPPING WAVE PROPAGATION IN SOLIDS
In collaboration with ETH Zurich, wave propagation in a steel beam was studied using our High-Resolution Distributed Acoustic Sensing (HR-DAS) with 50 sensing nodes. The results from HR-DAS matched perfectly with those from Laser Doppler Vibrometry (LDV). While LDV maps wave propagation point by point, HR-DAS provides an instant, high-fidelity image of wave propagation for the entire rod, demonstrating its exceptional precision and efficiency in analysing wave dynamics.
RAIL TRACK STRUCTURAL DYNAMICS ANALYSIS
In a joint project with the Infrastructure Group at the University of Southampton, strain measurements were conducted along a section of the railway track to monitor its curvature and deflection under load as a function of distance. High-Resolution Distributed Acoustic Sensing (HR-DAS) was utilised to achieve precise strain measurements at 50 discrete points along the rail, providing a detailed spatial profile of the rail's structural response. Equivalent measurements using conventional strain gauges would have necessitated the deployment of over 100 sensors, underscoring the superior efficiency and scalability offered by HR-DAS
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