Theoretical and Applied Fracture Mechanics, ( ISI ), Volume (101), No (4), Year (2019-3) , Pages (320-331)

Title : ( Prediction of fatigue crack propagation and fractography of rail steel )

Authors: Reza Masoudinejad , Mahmoud Shariati , Khalil Farhangdoost ,

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The aim of the present research is to determine the initiation and propagation of cracks and its geometric specifications. Metallurgical factors, especially the non-metallic inclusions have a significant impact on the fatigue life of railways. Since all non-metallic inclusions in a measure of steel alloy is not dangerous, determining how and which one of them affects the fatigue process of the rails is of the present studies\\\' concern. Afterwards, the results of the research on fracture surface of fatigue specimens will be presented. Numerical and experimental methods are used to investigate the behavior of fatigue crack growth in the specimen. For this purpose, the fatigue crack growth and hardness tests were carried out and have been checked by fractography studies on fractured specimens. The hardness of the specimens was measured in different points by using Rockwell microhardness experiment. Afterwards, a three-dimensional boundary element method is used for fatigue crack growth under stress field. The modified Paris model is used to estimate fatigue crack growth rates. Finally, threedimensional boundary element analysis results obtained show good agreement with those achieved in experimental tests.


Fatigue crack growth Fractography Crack Rail Fracture surface
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author = {Masoudinejad, Reza and Shariati, Mahmoud and Farhangdoost, Khalil},
title = {Prediction of fatigue crack propagation and fractography of rail steel},
journal = {Theoretical and Applied Fracture Mechanics},
year = {2019},
volume = {101},
number = {4},
month = {March},
issn = {0167-8442},
pages = {320--331},
numpages = {11},
keywords = {Fatigue crack growth Fractography Crack Rail Fracture surface},


%0 Journal Article
%T Prediction of fatigue crack propagation and fractography of rail steel
%A Masoudinejad, Reza
%A Shariati, Mahmoud
%A Farhangdoost, Khalil
%J Theoretical and Applied Fracture Mechanics
%@ 0167-8442
%D 2019