Effect of Surface Topography on ZDDP Tribofilm Formation During Running-in Stage Subject to Boundary Lubrication

2021 ◽  
Vol 70 (1) ◽  
Author(s):  
Linqing Bai ◽  
Yonggang Meng ◽  
Varian Zhang ◽  
Zulfiqar Ahmad Khan
Keyword(s):  
Surface Topography ◽  
Boundary Lubrication ◽  
Effect Of Surface

Effect of surface topography on the frictional behavior at the micro/nano-scale

Wear ◽  
2003 ◽  
Vol 254 (10) ◽  
pp. 1019-1031 ◽  
Author(s):  
In-Ha Sung ◽  
Hyung-Suk Lee ◽  
Dae-Eun Kim
Keyword(s):  
Surface Topography ◽  
Frictional Behavior ◽  
Nano Scale ◽  
Effect Of Surface

Modeling of residual stresses by correlating surface topography in machining of AISI 52100 steel

2021 ◽  
pp. 1-26
Author(s):  
Chao Liu ◽  
Yan He ◽  
Yufeng Li ◽  
Yulin Wang ◽  
Shilong Wang ◽  
...  
Keyword(s):  
Residual Stress ◽  
Residual Stresses ◽  
Cutting Force ◽  
Surface Topography ◽  
Analytical Model ◽  
Analytical Models ◽  
Workpiece Surface ◽  
Dynamic Cutting Force ◽  
Intermittent Cutting ◽  
Effect Of Surface

Abstract The residual stresses could affect the ability of components to bear loading conditions and also the performance. The researchers considered workpiece surface as a plane and ignored the effect of surface topography induced by the intermittent cutting process when modeling residual stresses. The aim of this research develops an analytical model to predict workpiece residual stresses during intermittent machining by correlating the effect of surface topography. The relative motions of tool and workpiece are analyzed for modeling thermal-mechanical and surface topography. The influence of dynamic cutting force and thermal on different positions of surface topography is also considered in analytical model. Then the residual stresses model with the surface topography effect can be developed in intermittent cutting. The analytical models of dynamic cutting force, surface topography and residual stresses are verified by the experiments. The variation trend of evaluated values of the residual stress of workpiece is basically consistent with that of measured values. The compressive residual stress of workpiece surface in highest point of the surface topography are higher than that in the lowest point.

EFFECT OF SURFACE TOPOGRAPHY ON SEISMIC MAPPING

Geophysics ◽  
1946 ◽  
Vol 11 (3) ◽  
pp. 362-372 ◽  
Author(s):  
M. B. Widess
Keyword(s):  
Statistical Analysis ◽  
Surface Topography ◽  
Rough Surface ◽  
Computational Methods ◽  
Surface Relief ◽  
Lateral Variations ◽  
Source Of Error ◽  
Gathering Data ◽  
Effect Of Surface ◽  
Approximate Magnitude

The presence of rough surface topography in a prospect frequently constitutes a source of error in seismic mapping and poses the question of what computational methods can be applied by which seismic maps may be freed of the effect of surface relief. Various aspects of the problem are described. The use of a plane datum‐horizon is generally adequate as a solution of the problem. For greater refinement, the structural map may be modified to account for the overburden effect, the approximate magnitude of which is considered. Further modification may be required when lateral variations in subweathering velocity occur. Statistical analysis for determining the degree of conformity between surface topography and mapped structure at depth is useful in gathering data on the influence of surface topography.

scholarly journals Effect of surface topography upon micro-impact dynamics

2015 ◽  
Vol 4 (1) ◽  
pp. 014001 ◽  
Author(s):  
M Mohammadpour ◽  
N J Morris ◽  
M Leighton ◽  
H Rahnejat
Keyword(s):  
Surface Topography ◽  
Impact Dynamics ◽  
Effect Of Surface

The effect of surface topography of retrieved femoral heads on the wear of UHMWPE sockets

1997 ◽  
Vol 19 (8) ◽  
pp. 711-719 ◽  
Author(s):  
R.M. Hall ◽  
P. Siney ◽  
A. Unsworth ◽  
B.M. Wroblewski
Keyword(s):  
Surface Topography ◽  
Femoral Heads ◽  
Effect Of Surface
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