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Estimation of rail properties using semi-analytical finite element models and guided wave ultrasound measurements

Author: Setshedi, Isaac I ; Loveday, Philip W ; Long, Craig S ; Wilke, Daniel N Date: Jul 2019 Guided wave based monitoring systems require accurate knowledge of mode propagation characteristics such as wavenumber and group velocity dispersion curves. These characteristics may be computed numerically for a rail provided that the material ... Read more
Guided wave propagation as a measure of axial loads in rails

Author: Loveday, Philip W ; Wilcox, PD Date: Mar 2010 Guided wave propagation has been proposed as a means to monitor the axial loads in continuously welded railway rails although no practical system has been developed. In this paper, the influence of axial load on the guided wave propagation ... Read more
Laser vibrometer measurement of guided wave modes in rail track

Author: Loveday, Philip W ; Long, Craig S Date: Nov 2014 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 ... Read more
Mode repulsion of ultrasonic guided waves in rails

Author: Loveday, Philip W ; Long, Craig S ; Ramatlo, Dineo AM Date: Mar 2018 Accurate computation of dispersion characteristics of guided waves in rails is important during the development of inspection and monitoring systems. Wavenumber versus frequency curves computed by the semi-analytical finite element method ... Read more

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Browsing by Subject "Semi-analytical finite element method"

Browsing by Subject "Semi-analytical finite element method"

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