Long, Craig SLoveday, Philip W2013-02-062013-02-062012-04Long, CS and Loveday, PW. 2012. Numerical characterisation of guided wave scattering due to welds in rails. 18th World Conference on Nondestructive Testing, Durban, South Africa, 16-20 April 2012978-0-620-52872-6http://www.ndt.net/article/wcndt2012/papers/287_wcndtfinal00287.pdfhttp://hdl.handle.net/10204/653518th World Conference on Nondestructive Testing, Durban, South Africa, 16-20 April 2012The analysis of travelling waves in elastic waveguides with complex cross-sections, such as train rails, can only conveniently be performed numerically. The semi-analytical finite element (SAFE) method has become a popular tool for performing such analyses. This paper employs a hybrid SAFE-3D method to investigate the scattering of guided waves interacting with discontinuities, such as welds, in continuous welded train rails. The aim of the analysis is to predict transmission and reflection coefficients for a given incident wave and known discontinuity parameters. This characterisation is useful for predicting the long-range transmission characteristics of transducers in NDT and monitoring systems, such as the rail break alarm system developed by the Institute for Maritime Technology (IMT) and the Council for Scientific and Industrial Research (CSIR). The numerical model can also be used to estimate welded sections properties from experimental measurements using a scanning laser vibrometer.enGuided wavesTrain railsGuided wave scatteringSemi-analytical finite elementSAFE18th World Conference on Nondestructive TestingConference PresentationLong, C. S., & Loveday, P. W. (2012). Numerical characterisation of guided wave scattering due to welds in rails. South African Institute for Non-Destructive Testing (SAINT). http://hdl.handle.net/10204/6535Long, Craig S, and Philip W Loveday. "Numerical characterisation of guided wave scattering due to welds in rails." (2012): http://hdl.handle.net/10204/6535Long CS, Loveday PW, Numerical characterisation of guided wave scattering due to welds in rails; South African Institute for Non-Destructive Testing (SAINT); 2012. http://hdl.handle.net/10204/6535 .TY - Conference Presentation AU - Long, Craig S AU - Loveday, Philip W AB - The analysis of travelling waves in elastic waveguides with complex cross-sections, such as train rails, can only conveniently be performed numerically. The semi-analytical finite element (SAFE) method has become a popular tool for performing such analyses. This paper employs a hybrid SAFE-3D method to investigate the scattering of guided waves interacting with discontinuities, such as welds, in continuous welded train rails. The aim of the analysis is to predict transmission and reflection coefficients for a given incident wave and known discontinuity parameters. This characterisation is useful for predicting the long-range transmission characteristics of transducers in NDT and monitoring systems, such as the rail break alarm system developed by the Institute for Maritime Technology (IMT) and the Council for Scientific and Industrial Research (CSIR). The numerical model can also be used to estimate welded sections properties from experimental measurements using a scanning laser vibrometer. DA - 2012-04 DB - ResearchSpace DP - CSIR KW - Guided waves KW - Train rails KW - Guided wave scattering KW - Semi-analytical finite element KW - SAFE KW - 18th World Conference on Nondestructive Testing LK - https://researchspace.csir.co.za PY - 2012 SM - 978-0-620-52872-6 T1 - Numerical characterisation of guided wave scattering due to welds in rails TI - Numerical characterisation of guided wave scattering due to welds in rails UR - http://hdl.handle.net/10204/6535 ER -