A Subscale Experimental Investigation on the Influence of Sanding on Adhesion and Rolling Contact Fatigue of Wheel/Rail Under Water Condition

被引：19
作者：
Huang, Wanliang [1 ]
Cao, Xi [1 ]
Wen, Zefeng [1 ]
Wang, Wenjian [1 ]
Liu, Qiyue [1 ]
Zhu, Minhao [1 ]
Jin, Xuesong [1 ]
机构：
[1] Southwest Jiaotong Univ, Tribol Res Inst, State Key Lab Tract Power, Chengdu 610031, Peoples R China
来源：
JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME | 2017年 / 139卷 / 01期
基金：
中国国家自然科学基金;
关键词：
wheel/rail adhesion; sanding; surface damage; fatigue crack; water; FIELD INVESTIGATIONS; IMPROVING ADHESION; FRICTION MODIFIERS; NUMERICAL-ANALYSIS; RAIL; WEAR; LEAF; RECOVERY; PARTICLE; DAMAGE;
D O I：
10.1115/1.4033100
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
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.
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页数：8
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