Abstract
Surface patterning has become a valuable technique for fabricating microdents, which may act as lubricant reservoirs to reduce friction and wear in sliding and rolling contact applications. In this paper, the use of laser shock peening (LSP) along with an automatic X-Y table proves to be an attractive and reliable method for producing microdent arrays with enhanced surface integrity. Surface topography and profiles of the fabricated microdent arrays on polished Ti-6Al-4V have been characterized. The effect of dent arrays with different density on friction reduction at low and high viscosity lubrication was investigated. An acoustic emission (AE) sensor was used to online monitor friction and wear processes. It was found that a surface with 10% dent density provides better effect in reducing coefficient of friction (CoF) than those of smooth surface and a surface with 20% dent density. It was shown that there is a strong correlation between AE energy signals and wear rate.
| Original language | English (US) |
|---|---|
| Article number | 051020 |
| Journal | Journal of Manufacturing Science and Engineering, Transactions of the ASME |
| Volume | 136 |
| Issue number | 5 |
| DOIs | |
| State | Published - Oct 2014 |
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Keywords
- acoustic emission
- laser shock peening
- surface patterning
- tribology
ASJC Scopus subject areas
- Control and Systems Engineering
- Mechanical Engineering
- Computer Science Applications
- Industrial and Manufacturing Engineering
Cite this
Fabrication and tribological functions of microdent arrays on Ti-6Al-4V surface by laser shock peening. / Caslaru, R.; Sealy, M. P.; Guo, Y. B.; Wei, X. T.
In: Journal of Manufacturing Science and Engineering, Transactions of the ASME, Vol. 136, No. 5, 051020, 10.2014.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fabrication and tribological functions of microdent arrays on Ti-6Al-4V surface by laser shock peening
AU - Caslaru, R.
AU - Sealy, M. P.
AU - Guo, Y. B.
AU - Wei, X. T.
PY - 2014/10
Y1 - 2014/10
N2 - Surface patterning has become a valuable technique for fabricating microdents, which may act as lubricant reservoirs to reduce friction and wear in sliding and rolling contact applications. In this paper, the use of laser shock peening (LSP) along with an automatic X-Y table proves to be an attractive and reliable method for producing microdent arrays with enhanced surface integrity. Surface topography and profiles of the fabricated microdent arrays on polished Ti-6Al-4V have been characterized. The effect of dent arrays with different density on friction reduction at low and high viscosity lubrication was investigated. An acoustic emission (AE) sensor was used to online monitor friction and wear processes. It was found that a surface with 10% dent density provides better effect in reducing coefficient of friction (CoF) than those of smooth surface and a surface with 20% dent density. It was shown that there is a strong correlation between AE energy signals and wear rate.
AB - Surface patterning has become a valuable technique for fabricating microdents, which may act as lubricant reservoirs to reduce friction and wear in sliding and rolling contact applications. In this paper, the use of laser shock peening (LSP) along with an automatic X-Y table proves to be an attractive and reliable method for producing microdent arrays with enhanced surface integrity. Surface topography and profiles of the fabricated microdent arrays on polished Ti-6Al-4V have been characterized. The effect of dent arrays with different density on friction reduction at low and high viscosity lubrication was investigated. An acoustic emission (AE) sensor was used to online monitor friction and wear processes. It was found that a surface with 10% dent density provides better effect in reducing coefficient of friction (CoF) than those of smooth surface and a surface with 20% dent density. It was shown that there is a strong correlation between AE energy signals and wear rate.
KW - acoustic emission
KW - laser shock peening
KW - surface patterning
KW - tribology
UR - http://www.scopus.com/inward/record.url?scp=84940225442&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84940225442&partnerID=8YFLogxK
U2 - 10.1115/1.4027918
DO - 10.1115/1.4027918
M3 - Article
AN - SCOPUS:84940225442
VL - 136
JO - Journal of Manufacturing Science and Engineering, Transactions of the ASME
JF - Journal of Manufacturing Science and Engineering, Transactions of the ASME
SN - 1087-1357
IS - 5
M1 - 051020
ER -