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3D characterisation...
3D characterisation of RCF crack networks
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- Ahlström, Johan, 1969 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Jessop, Casey, 1988 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Hammar, Lars, 1961 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Persson, Christer, 1960 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2014-06-09
- 2014
- Engelska.
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Ingår i: MATEC Web of Conferences. - : EDP Sciences. - 2261-236X. ; 12
- Relaterad länk:
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https://research.cha... (primary) (free)
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https://www.matec-co...
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Rolling contact fatigue (RCF) damage is becoming more frequent with increased traffic and loading conditions in the railway industry. Defects which are characterized by a two-lobe darkened surface and a V-shaped surface-breaking crack are often so-called squats. The origination and propagation of squats in railway rails is the topic of many recent studies; the associated crack networks develop with complicated geometry near the surface of rails that is difficult to characterise using most non-destructive methods. The cracks can be examined with repeated metallographic sectioning, but the process is time-consuming and destructive. In order to reduce time, as well as information and material loss, high-resolution and high-energy X-ray imaging of railway rails was done in the current study. Combining the exposures from a range of angles using image analysis, a 3D representation of the complex crack network is achieved. The latter was complemented with metallographic sectioning to determine the accuracy of prediction of the geometrical reconstruction.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
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- ref (ämneskategori)
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