Modelling and simulation of ultrasonic inspections in welded rails subjected to practical environmental conditions

A permanently installed Ultrasonic Broken Rail Detection system monitors the Sishen-Saldanha railway line in South Africa [1]. The system detects complete rail breaks at long-range using guided wave ultrasound. For the system to be reliable, its damage detection performance must be evaluated under a...

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Autores principales:	Ramatlo Dineo, Loveday Philip, Long Craig, Wilke Daniel
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/e22110f1793d48bcb9ba1332806c49b6
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spelling	oai:doaj.org-article:e22110f1793d48bcb9ba1332806c49b62021-12-02T17:13:35ZModelling and simulation of ultrasonic inspections in welded rails subjected to practical environmental conditions2261-236X10.1051/matecconf/202134700034https://doaj.org/article/e22110f1793d48bcb9ba1332806c49b62021-01-01T00:00:00Zhttps://www.matec-conferences.org/articles/matecconf/pdf/2021/16/matecconf_sacam21_00034.pdfhttps://doaj.org/toc/2261-236XA permanently installed Ultrasonic Broken Rail Detection system monitors the Sishen-Saldanha railway line in South Africa [1]. The system detects complete rail breaks at long-range using guided wave ultrasound. For the system to be reliable, its damage detection performance must be evaluated under actual environmental and operational conditions (EOCs). However, obtaining monitoring data containing damage reflections is virtually impossible since detected defects in operational rail track sections are immediately removed and replaced with new rail. Laboratory experiments are also not possible since end reflections from short sections of rail dominate the response. Therefore, damage signals can only practically be obtained from numerical simulations. The simulated damage signals should be realistic and include varying EOCs, especially temperature variations. This paper aims to demonstrate a procedure to model temperature variations in ultrasonic signals. The temperature model and the modelling framework developed in [2] are used to simulate reflections from welds. The framework models the excitation, propagation and scattering of GWs from discontinuities by employing a hybrid model based on the 3D Finite Element method and the 2D Semi-Analytical Finite Element method. The simulated results are validated using experimental measurements collected from an operational rail at different temperatures.Ramatlo DineoLoveday PhilipLong CraigWilke DanielEDP SciencesarticleEngineering (General). Civil engineering (General)TA1-2040ENFRMATEC Web of Conferences, Vol 347, p 00034 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Engineering (General). Civil engineering (General) TA1-2040 Ramatlo Dineo Loveday Philip Long Craig Wilke Daniel Modelling and simulation of ultrasonic inspections in welded rails subjected to practical environmental conditions
description	A permanently installed Ultrasonic Broken Rail Detection system monitors the Sishen-Saldanha railway line in South Africa [1]. The system detects complete rail breaks at long-range using guided wave ultrasound. For the system to be reliable, its damage detection performance must be evaluated under actual environmental and operational conditions (EOCs). However, obtaining monitoring data containing damage reflections is virtually impossible since detected defects in operational rail track sections are immediately removed and replaced with new rail. Laboratory experiments are also not possible since end reflections from short sections of rail dominate the response. Therefore, damage signals can only practically be obtained from numerical simulations. The simulated damage signals should be realistic and include varying EOCs, especially temperature variations. This paper aims to demonstrate a procedure to model temperature variations in ultrasonic signals. The temperature model and the modelling framework developed in [2] are used to simulate reflections from welds. The framework models the excitation, propagation and scattering of GWs from discontinuities by employing a hybrid model based on the 3D Finite Element method and the 2D Semi-Analytical Finite Element method. The simulated results are validated using experimental measurements collected from an operational rail at different temperatures.
format	article
author	Ramatlo Dineo Loveday Philip Long Craig Wilke Daniel
author_facet	Ramatlo Dineo Loveday Philip Long Craig Wilke Daniel
author_sort	Ramatlo Dineo
title	Modelling and simulation of ultrasonic inspections in welded rails subjected to practical environmental conditions
title_short	Modelling and simulation of ultrasonic inspections in welded rails subjected to practical environmental conditions
title_full	Modelling and simulation of ultrasonic inspections in welded rails subjected to practical environmental conditions
title_fullStr	Modelling and simulation of ultrasonic inspections in welded rails subjected to practical environmental conditions
title_full_unstemmed	Modelling and simulation of ultrasonic inspections in welded rails subjected to practical environmental conditions
title_sort	modelling and simulation of ultrasonic inspections in welded rails subjected to practical environmental conditions
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/e22110f1793d48bcb9ba1332806c49b6
work_keys_str_mv	AT ramatlodineo modellingandsimulationofultrasonicinspectionsinweldedrailssubjectedtopracticalenvironmentalconditions AT lovedayphilip modellingandsimulationofultrasonicinspectionsinweldedrailssubjectedtopracticalenvironmentalconditions AT longcraig modellingandsimulationofultrasonicinspectionsinweldedrailssubjectedtopracticalenvironmentalconditions AT wilkedaniel modellingandsimulationofultrasonicinspectionsinweldedrailssubjectedtopracticalenvironmentalconditions
_version_	1718381351781007360

Modelling and simulation of ultrasonic inspections in welded rails subjected to practical environmental conditions

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