Computational Technology Resources - CCP

Keywords: rail steel mechanical properties, finite element method, constitutive equation, low temperature properties, Vickers indentation test.

Summary

In view of the extreme cold temperatures in the Canadian climate there has been interest in characterizing the fracture toughness of the rail steels currently being installed by both the Canadian National Railway and the Canadian Pacific Railway. Past work has shown the potential for a significant drop in the fracture toughness of rail steels within the range of temperatures common during a Canadian winter. The ultimate objective of this study is to develop a new, versatile test method to measure fracture toughness of rail steels so that the variation can be monitored on a regular basis for the evaluation of rail steel in service and new steel to be put into track. This paper summarizes the results from the first stage of this study, which is the characterization of mechanical properties of rail steels as a function of location on the cross section of the rail, and how these properties vary with variations of temperature between 23 and -40°C. The results from the mechanical testing were analysed with finite element modelling, to establish a constitutive equation for the variation of the properties with changes in temperature. The paper also presents test results from a preliminary investigation into the use of the Vickers indentation test to characterize the overall mechanical behaviour of the rail steel.

purchase the full-text of this paper (price £20)

go to the previous paper
go to the next paper
return to the table of contents
return to the book description
purchase this book (price £65 +P&P)

	Computational & Technology Resources an online resource for computational, engineering & technology publications
	not logged in - login
Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 104 PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 106 Influence of Low Temperature on Deformation and Fracture of Rail Steels F. Yu¹, B. Jar¹, and M. Hendry² ¹Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta, Canada ²Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada doi:10.4203/ccp.104.106 purchase the full-text of this paper Full Bibliographic Reference for this paper F. Yu, B. Jar,, M. Hendry, "Influence of Low Temperature on Deformation and Fracture of Rail Steels", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 106, 2014. doi:10.4203/ccp.104.106 Keywords: rail steel mechanical properties, finite element method, constitutive equation, low temperature properties, Vickers indentation test. Summary In view of the extreme cold temperatures in the Canadian climate there has been interest in characterizing the fracture toughness of the rail steels currently being installed by both the Canadian National Railway and the Canadian Pacific Railway. Past work has shown the potential for a significant drop in the fracture toughness of rail steels within the range of temperatures common during a Canadian winter. The ultimate objective of this study is to develop a new, versatile test method to measure fracture toughness of rail steels so that the variation can be monitored on a regular basis for the evaluation of rail steel in service and new steel to be put into track. This paper summarizes the results from the first stage of this study, which is the characterization of mechanical properties of rail steels as a function of location on the cross section of the rail, and how these properties vary with variations of temperature between 23 and -40°C. The results from the mechanical testing were analysed with finite element modelling, to establish a constitutive equation for the variation of the properties with changes in temperature. The paper also presents test results from a preliminary investigation into the use of the Vickers indentation test to characterize the overall mechanical behaviour of the rail steel. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
Back to top	©Civil-Comp Limited 2023 - terms & conditions