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Show simple item record Loveday, PW Long, CS 2015-08-19T10:55:44Z 2015-08-19T10:55:44Z 2014-11
dc.identifier.citation Loveday, P.W and Long, C.S. 2014. Laser vibrometer measurement of guided wave modes in rail track. Laser vibrometer measurement of guided wave modes in rail track, vol. 57, pp 209-217 en_US
dc.identifier.issn 0041-624X
dc.description Copyright: 2015 Elsevier.This is a pre print version. The definitive version of the work is published in the Ultrasonics, vol.57, pp 209-217 en_US
dc.description.abstract The ability to measure the individual modes of propagation is very beneficial during the development of guided wave ultrasound based rail monitoring systems. Scanning laser vibrometers can measure the displacement at a number of measurement points on the surface of the rail track. A technique for estimating the amplitude of the individual modes of propagation from these measurements is presented and applied to laboratory and field measurements. The method uses modal data from a semi-analytical finite element model of the rail and has been applied at frequencies where more than twenty propagating modes exist. It was possible to measure individual modes of propagation at a distance of 400 m from an ultrasonic transducer excited at 30 kHz on operational rail track and to identify the modes that are capable of propagating large distances. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Workflow;14398
dc.subject Semi-analytical finite element method en_US
dc.subject Modes of guided wave propagation en_US
dc.subject Laser vibrometer measurement en_US
dc.subject Rail tracks en_US
dc.title Laser vibrometer measurement of guided wave modes in rail track en_US
dc.type Article en_US

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