Use this URL to cite or link to this record in EThOS: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.782389
Title: Remote condition monitoring of structural integrity of rails and crossings using acoustic emission technique
Author: Shi, Shengrun
ISNI:       0000 0004 7967 9940
Awarding Body: University of Birmingham
Current Institution: University of Birmingham
Date of Award: 2019
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Abstract:
In-service rails and Hadfield steel crossings may develop structural defects due to the stresses and environmental conditions they are subjected to. Inspection and assessment of the growth of these defects in service is critical in making maintenance decisions and ensuring the smooth operation of the rail network. The main aim of this project has been to investigate the possibility of using acoustic emission (AE) technique to monitor structural integrity of rails and crossings in real time. AE technique has been used to monitor the damage evolution process of three different types of samples during low and high frequency bending fatigue crack growth tests. The sudden increase in crack length caused by the occurrence of brittle cleavage fracture has been successfully detected by AE. Various signal processing algorithms have been employed for the in-depth analysis of the acquired raw AE waveforms and proved to be effective in evaluating the severity of damage. Overall, this research has shown that AE can be used as a tool to effectively evaluate the structural integrity of rails and Hadfield steel crossings online.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.782389  DOI: Not available
Keywords: TF Railroad engineering and operation
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