Home List of Titles Image analysis to reveal crack development using a computer simulation of wear and rolling contact fatigue
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/47646
- Image analysis to reveal crack development using a computer simulation of wear and rolling contact fatigue
- Fletcher, D. I.; Franklin, F. J.; Kapoor, A.
- Plastic flow of near-surface rail material under contact loading is a feature of rail-wheel contact, and severe flow typically leads to both wear, and the initiation and development of small surface-breaking cracks. This paper presents results from a ratcheting based computer simulation, which has been developed to allow the simultaneous investigation of wear, crack initiation and early crack propagation. To identify repeatably small crack-like flaws, image analysis is applied to the visual representation of the wearing surface generated by the model. This representation shows a good similarity to traditional micrographs taken from sections of worn surfaces. The model clearly reveals the interaction of wear with crack development, processes which are linked because wear truncates surface-breaking cracks, and can completely remove small surface-breaking cracks.
- Publication type
- Journal article
- Fatigue and Fracture of Engineering Materials and Structures, Vol. 26, no. 10 (Oct 2003), pp. 957-967
- Publication year
- Computer simulation; Contact loading; Crack initiation; Crack propagation; Failure; Fatigue of materials; Image analysis; Loading; Mathematical models; Plastic flow; Rail steel; Rail wheel contact; Rolling contact; Rolling contact fatigue; Simulation; Surface breaking cracks; Wear
- Publisher URL
- Copyright © 2003 Blackwell Publishing.
- Peer reviewed