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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

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The use of fibre optic sensors to compare the internal strains and pressures produced by different Lamb wave modes

Thursby, G. and Culshaw, B. (2011) The use of fibre optic sensors to compare the internal strains and pressures produced by different Lamb wave modes. In: 21st International Conference on Optical Fiber Sensors. Proceedings of SPIE . SPIE, Bellingham. ISBN 9780819482464

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Abstract

Lamb waves are a type of guided ultrasound wave that propagate in plate material and have found applications in the fields of structural health monitoring and material properties evaluation. They have modal properties and are divided into two categories, symmetric and antisymmetric. Normally they are measured through detection of surface movement; however analysis shows that the greatest difference in particle motion between the modes is at the centre of the plate. In this paper the use of fibre Bragg gratings and polarimeters, embedded at different locations within the plate, to detect the differences in strain and pressure these ultrasound modes produce by is described.