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An autonomous structural health monitoring solution

Featherston, Carol, Holford, Karen Margaret, Pullin, Rhys, Lees, Jonathan, Eaton, Mark Jonathan and Pearson, Matthew R. 2013. An autonomous structural health monitoring solution. Presented at: Microtechnologies 2013, Grenoble, France, 24-26 April 2013. Proc. SPIE 8763, Smart Sensors, Actuators, and MEMS VI. Society of Photo-Optical Instrumentation Engineers (SPIE), p. 876302. 10.1117/12.2018401

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Abstract

Combining advanced sensor technologies, with optimised data acquisition and diagnostic and prognostic capability, structural health monitoring (SHM) systems provide real-time assessment of the integrity of bridges, buildings, aircraft, wind turbines, oil pipelines and ships, leading to improved safety and reliability and reduced inspection and maintenance costs. The implementation of power harvesting, using energy scavenged from ambient sources such as thermal gradients and sources of vibration in conjunction with wireless transmission enables truly autonomous systems, reducing the need for batteries and associated maintenance in often inaccessible locations, alongside bulky and expensive wiring looms. The design and implementation of such a system however presents numerous challenges. A suitable energy source or multiple sources capable of meeting the power requirements of the system, over the entire monitoring period, in a location close to the sensor must be identified. Efficient power management techniques must be used to condition the power and deliver it, as required, to enable appropriate measurements to be taken. Energy storage may be necessary, to match a continuously changing supply and demand for a range of different monitoring states including sleep, record and transmit. An appropriate monitoring technique, capable of detecting, locating and characterising damage and delivering reliable information, whilst minimising power consumption, must be selected. Finally a wireless protocol capable of transmitting the levels of information generated at the rate needed in the required operating environment must be chosen. This paper considers solutions to some of these challenges, and in particular examines SHM in the context of the aircraft environment.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Engineering
Centre for Advanced Manufacturing Systems At Cardiff (CAMSAC)
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Publisher: Society of Photo-Optical Instrumentation Engineers (SPIE)
Last Modified: 05 Nov 2019 03:56
URI: http://orca.cf.ac.uk/id/eprint/47380

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