Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 12 of 12 for “"Strain monitoring"”.
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Multi-axial strain monitoring of fibre reinforced thermosetting plastics using embedded highly birefringent optical fibre Bragg sensors
… conventional isotropic construction materials. Strain monitoring of an in-service structure should greatly enhance the insight and confidence in the (long-term) behaviour of high performance composite structures. Structural health monitoring necessitates the possibility of measuring multi-axials …
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Feasibility study into the use of digital image correlation for creep strain monitoring of fossil power plant welds
… setting up a DIC system optimised for measuring strain in an area of the pipework welds known as the Heat Affected Zone (HAZ) - the weakest part of the weldment. The achievable accuracy is established and the major parameters that affect DIC accuracy are investigated, elucidating the trade-offs …
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Multifunctional wearable fingertip electronics
… nanomembrane diodes (Si NM), high-sensitivity strain monitoring with Si NM gauges, and tactile sensing with elastomeric capacitors. Experiments have been conducted for each of the devices to demonstrate the expected functionalities. Analytical calculations and finite element modeling of the …
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Resonant cavity Fibre Bragg grating sensor interrogation
… include laboratory instruments, temperature monitoring systems for oil production, dynamic control for wind-energy and battery powered, self-contained sub-sea strain monitoring.
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On a dual wavelength optical sensor system for measuring strain and temperature simultaneously in tokamak port plug
… with long lasting, accurate, temperature and strain monitoring devices. This thesis demonstrates that using electrical sensors in the supporting structures of a fusion reactor for measuring strain and temperature will be strongly affected by the ionising radiation and the electromagnetic …
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High Fidelity Localization of Energy Autonomous mmIDS for Future Cyber-physical Systems
… a chipless cross-polarized reflectarray wireless strain sensor presenting the first every off-axis structural health monitoring fully-passive sensor for local strain monitoring for both adhered or embedded form-factors. Along with the design and characterization of the wireless strain sensor, a …
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Design of a wireless platform for wearable and home automation applications
… multitude of applications such as environmental monitoring, medical care, disaster response, home automation, urban scale monitoring, gaming etc. These small, low-power, multifunctional sensors includes sensing, data processing and communication components representing a significant improvement …
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Structural assessment of bridges using monitoring data
… little industry uptake of structural health monitoring (SHM) technologies and model updating techniques, i.e., the integration of structural monitoring data with structural analysis modelling, in bridge operation and maintenance (O\&M) activities. Many bridge practitioners question whether …
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In-situ deformation monitoring of aerospace qualified composites with embedded improved draw tower fibre Bragg gratings
… and Boeing are looking at incorporating health-monitoring systems (such as optical fibre sensors, especially fibre Bragg gratings) that will allow the airplane to self-monitor and report maintenance requirements to ground-based computer systems. However, one has to realize that the mechanical …
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An Evaluation of Optical Fiber Strain Sensing for Engineering Applications
… gratings. These fibers were bonded with AE-10 strain gage adhesive. The results indicate that lower strain amplitudes do not produce cause for concern, but that larger strain amplitudes (on the order of 3500 μ) may cause some sensors to become unreliable. The strain response of acrylate coated …
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Dynamic distributed monitoring of masonry railway bridges
… analysis. In this thesis, Structural Health Monitoring is used to gain new insights into the behaviour of masonry arch bridges and viaducts. Part 1 includes an initial study in which the outputs of simplified finite element models are compared against previously gathered FBG monitoring data, …
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A Comprehensive Integrity Monitoring System for Bolted Flange Connections
… for offshore applications. Therefore, integrity monitoring and inspection of both onshore and offshore bolted flange connections is necessary. In this dissertation, a comprehensive integrity monitoring system is proposed and developed through the implementation of cutting-edge sensing …