Investigation of wear and ratcheting response of head-hardened Australian rail steel under conditions of rolling contact fatigue
Athukorala, Asitha Chandimal (2016) Investigation of wear and ratcheting response of head-hardened Australian rail steel under conditions of rolling contact fatigue. PhD by Publication, Queensland University of Technology.
The work in this thesis comprehensively investigates the effects of non-uniform material behaviour exhibited by head-hardened Australian rail steel on ratcheting, wear and rolling-contact fatigue. As a result, this research develops novel approaches to characterising rolling-contact fatigue utilising wear debris and surface replication. Furthermore, calibration of material parameters was conducted to obtain a unified material model to elucidate the non-uniform mechanical behaviour of rail steel. All these methods draw attention to the need to refine track maintenance and re-railing practices related to Australian rail steel.
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|Item Type:||QUT Thesis (PhD by Publication)|
|Supervisor:||De Pellegrin, Dennis, Hargreaves, Doug, & Kourousis, Kyriakos|
|Keywords:||rolling-contact fatigue, ratcheting, AS1085.1 standards, twin-disc, hardened rail, wear rate, surface replication, wear debris, surface and subsurface fatigue;, focus ion beam milling|
|Divisions:||Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Institution:||Queensland University of Technology|
|Deposited On:||25 Aug 2016 07:18|
|Last Modified:||25 Aug 2016 07:18|
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