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- W2472016036 abstract "Subsurface cracking of railway lines due to fatigue is a common problem that is not yet fully understood. This subsurface cracking is referred to as ‘railway squats’ due to the visual depression of the rail from plastic flow of the metal near the crack, and are apparent on all used railroads worldwide. This thesis aimed to observe railway squat cracks approaching the point of rail failure. An extensive analytical breakdown of the Winkler Model for calculating Stress Intensity Factors was used in conjunction with modelling on Ansys Workbench. A prediction model for failure was included, however lacked the detail of the way in which it fails. Without more extensive testing and LEFM results, the original aim was not fully achievable. The results obtained through this thesis can be used to predict the most likely cause of how failure would occur, and can be used as a solid grounding for future work in the field. For failure to occur, the kinking angle must be high so the crack can propagate down into the head of the rail which implies an initial dominance of mode II in the early stages of crack growth, followed by prominent bending stresses to continue further propagation for rail fracture." @default.
- W2472016036 created "2016-07-22" @default.
- W2472016036 creator A5057590971 @default.
- W2472016036 date "2013-01-01" @default.
- W2472016036 modified "2023-09-27" @default.
- W2472016036 title "Stress Analysis of Subsurface Cracks in Railway Lines Leading to Failure" @default.
- W2472016036 hasPublicationYear "2013" @default.
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