Volume 5, Number 2 (spring 2008 2008)                   IJMSE 2008, 5(2): 22-31 | Back to browse issues page


XML Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

A. Hassani, R. Ravaee. CHARACTERIZATION OF TRANSVERSE CRACK AND CRACK GROWTH IN A RAILWAY RAIL. IJMSE. 2008; 5 (2) :22-31
URL: http://ijmse.iust.ac.ir/article-1-134-en.html

Abstract:   (7119 Views)
Abstract: To ensure the rail transportations safety, evaluation of fatigue behavior of the rail steel is necessary. High cycle fatigue behaviour of a rail steel was the subject of investigation in this research using fracture mechanics. Finite element method (FEM) was used for analyzing the distribution of the stresses on the rail, exerted by the external load. FEM analysis showed that the maximum longitudinal stresses occurred on the railhead. To find out about the relation of crack growth with its critical size, and to estimate its lifetime, the behaviour of transverse cracks to rail direction was studied using damage tolerance concept. It revealed that transverse crack growth initially occurred slowly, but it accelerated once the crack size became larger. Residual service life was calculated for defective segments of the rails. In addition, allowable crack size for different non-destructive testing intervals was determined the allowable crack size decreased as the NDT intervals increased.
Full-Text [PDF 376 kb]   (2315 Downloads)    
Type of Study: Research paper |

Add your comments about this article : Your username or email:
Write the security code in the box

Send email to the article author


© 2016 All Rights Reserved | Iranian Journal of Materials Science and Engineering

Designed & Developed by : Yektaweb