In-situ micro-asperity investigation of real contact area formation during sliding with the effects of roughness and normal load considered

粗糙度(岩土工程) 接触面积 材料科学 表面粗糙度 摩擦学 表面光洁度 复合材料 蓝宝石 光学 物理 激光器
作者
P. Jan,B. Brodnik Zugelj,Mitjan Kalin
出处
期刊:Tribology International [Elsevier BV]
卷期号:191: 109171-109171
标识
DOI:10.1016/j.triboint.2023.109171
摘要

Real contact area is a challenging phenomenon in tribology, where despite established theoretical models, detailed experimental studies are still lacking. This work is focused on the evolution of the real contact area of multi-asperity steel contacts during sliding, by using sub-micron characterisation of entire multi-asperity contact area and simultaneous measurement of the friction force. Steel-sapphire contact was monitored by using an in-situ optical system in real time during 5 mm of unidirectional sliding in surface roughness range Ra = 0.1–1.0 µm and normal loads up to the nominal contact pressure equal to steel yield strength (Y). The results showed that the initial real contact area caused by static loading increased during sliding. At low nominal contact pressure of 0.3Y, the increase in real contact area was the largest: for Ra = 0.1 µm it went from 9.5% of the nominal area under static conditions to 15.0% after sliding, a 56% relative increase, and for Ra = 1.0 µm it went from 5.0% to 11.5% after sliding, a 106% increase. The increase in real contact area was smaller at higher nominal contact pressures of 0.6Y and 1.0Y. At 1.0Y for Ra = 0.1 µm the real contact area went from 18.0% to 21.8% after sliding and for Ra = 1.0 µm it went from 9.4% to 12.9% after sliding. The coefficient of friction increased with roughness at the lowest nominal contact pressure 0.3Y (for Ra = 0.1 µm it was 0.24 and for Ra = 1.0 µm it was 0.29) but became independent of roughness at higher contact pressures (on average 0.18).
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
量子星尘发布了新的文献求助10
刚刚
结实的幽魂完成签到,获得积分10
1秒前
Rondab应助zz采纳,获得30
1秒前
单纯的冬灵完成签到 ,获得积分10
2秒前
4秒前
5秒前
肥猫发布了新的文献求助10
5秒前
5秒前
可爱的函函应助过氧化氢采纳,获得30
8秒前
8秒前
锦鲤完成签到 ,获得积分10
9秒前
任性的白玉完成签到 ,获得积分10
9秒前
youwenjing11发布了新的文献求助10
10秒前
山谷完成签到 ,获得积分10
10秒前
钱宇成发布了新的文献求助10
11秒前
科研通AI2S应助感动黄豆采纳,获得10
15秒前
19秒前
20秒前
23秒前
Fengliguantou发布了新的文献求助10
23秒前
猪猪hero发布了新的文献求助10
25秒前
Winner发布了新的文献求助10
27秒前
隐形曼青应助科研通管家采纳,获得10
27秒前
领导范儿应助科研通管家采纳,获得10
27秒前
Lucas应助科研通管家采纳,获得30
28秒前
28秒前
圆锥香蕉应助科研通管家采纳,获得20
28秒前
科研通AI2S应助科研通管家采纳,获得10
28秒前
科研通AI2S应助科研通管家采纳,获得10
28秒前
科目三应助科研通管家采纳,获得10
28秒前
充电宝应助科研通管家采纳,获得10
28秒前
脑洞疼应助科研通管家采纳,获得10
28秒前
科研通AI5应助科研通管家采纳,获得10
28秒前
852应助科研通管家采纳,获得10
28秒前
科研通AI2S应助科研通管家采纳,获得10
28秒前
科研通AI2S应助科研通管家采纳,获得10
28秒前
情怀应助科研通管家采纳,获得10
29秒前
29秒前
感动黄豆发布了新的文献求助10
29秒前
32秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989115
求助须知:如何正确求助?哪些是违规求助? 3531367
关于积分的说明 11253688
捐赠科研通 3269986
什么是DOI,文献DOI怎么找? 1804868
邀请新用户注册赠送积分活动 882078
科研通“疑难数据库(出版商)”最低求助积分说明 809105