A Subscale Experimental Investigation on the Influence of Sanding on Adhesion and Rolling Contact Fatigue of Wheel/Rail Under Water Condition
| Autor: | Wanliang Huang, Minhao Zhu, X. Cao, Xuesong Jin, Wenjian Wang, Zefeng Wen, Qiyue Liu |
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| Rok vydání: | 2016 |
| Předmět: |
020303 mechanical engineering & transports
Materials science 0203 mechanical engineering Mechanics of Materials Mechanical Engineering Metallurgy Rolling contact fatigue 02 engineering and technology Surfaces and Interfaces Adhesion 021001 nanoscience & nanotechnology 0210 nano-technology Surfaces Coatings and Films |
| Zdroj: | Journal of Tribology. 139 |
| ISSN: | 1528-8897 0742-4787 |
| DOI: | 10.1115/1.4033100 |
| Popis: | With a subscale rolling-sliding apparatus, the objective of this study is to explore the adhesion and rolling contact fatigue characteristics of wheel/rail rollers with sanding under water condition. Sanding improves adhesion coefficient but aggravates the surface damage of wheel and rail materials. With the particle diameter and feed rate increasing, the adhesion coefficient is further improved. However, the surface damage (spalling and pits) becomes severer as well as the surface roughness. Note that pitting is a special damage type when sanding is used to improve the adhesion. Big pits and fatigue cracks appear on subsurface under larger particle diameter and feed rate conditions. Severe cracks initiate from big pits and develop into material to a depth, which results in bulk material breaking. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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