2104 Design index for tactile texture Effect of surface groove width and touching conditions on tactile convexoconcave perception

2013 ◽  
Vol 2013.23 (0) ◽  
pp. _2104-1_-_2104-9_
Author(s):  
Shin HIRASHIMA ◽  
Hideyoshi YANAGISAWS
Keyword(s):  
Groove Width ◽  
Texture Effect ◽  
Surface Groove ◽  
Effect Of Surface

Effect of surface “groove” structure of carbon nanotube bundles on the formation of nanohybrid shish kebab

2012 ◽  
Vol 27 (21) ◽  
pp. 2812-2818 ◽  
Author(s):  
Nanying Ning ◽  
Wei Zhang ◽  
Jiajie Yan ◽  
Fan Xu ◽  
Changyu Tang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Nanotube Bundles ◽  
Groove Structure ◽  
Surface Groove ◽  
Image Position ◽  
Effect Of Surface

Abstract

917 Effect of surface groove on wear of PEEK bush in robot-joint system

2013 ◽  
Vol 2013.66 (0) ◽  
pp. 307-308
Author(s):  
Shota OKAZAKI ◽  
Hitonobu KOIKE ◽  
Kiyoto ITAKURA ◽  
Masahiro TAKAMIYA ◽  
Kenichi SARUWATARI ◽  
...  
Keyword(s):  
Joint System ◽  
Surface Groove ◽  
Effect Of Surface

Digital Studying of Surface Groove on the Pipe Hydroforming Process in Cross Shaped Joint Production

2013 ◽  
Vol 705 ◽  
pp. 36-40
Author(s):  
Mohammad Kahrizi
Keyword(s):  
Friction Coefficient ◽  
Pipe Wall ◽  
Thickness Distribution ◽  
Research Result ◽  
Complex Function ◽  
Joint Production ◽  
Hydroforming Process ◽  
Pipe Joints ◽  
Surface Groove ◽  
Effect Of Surface

The Y and T pipe joints production has recently been noticed by the researchers and industrial men.This paper, approved by the Ministry of Energy, is a part of the research result that analyzes the effect of surface grooves on the Counterpunch and friction coefficient on the pipe wall surface in pipe hydroforming Process for cross shaped joint production.The simulation results show creating the groove on the counterpunch surface causes distribution of thickness in bulged region changes. More over these results show that thickness distribution is a complex function of friction coefficient.

scholarly journals Effect of Surface Groove and Graphite Penetration on Friction Properties of Sulfide Containing Copper Alloy Journal Bearing in Dry Condition

2013 ◽  
Vol 68 ◽  
pp. 37-42 ◽  
Author(s):  
Yoshimasa Hirai ◽  
Tomohiro Sato ◽  
Takehisa Fukui ◽  
Kento Yamada ◽  
Kazuki Tanizawa ◽  
...  
Keyword(s):  
Copper Alloy ◽  
Journal Bearing ◽  
Surface Groove ◽  
Effect Of Surface

Influence of Surface Groove Width on Tribological Performance for Cylinder Liner–Piston Ring Components

2019 ◽  
Vol 62 (2) ◽  
pp. 239-248 ◽  
Author(s):  
Xiang Rao ◽  
Chenxing Sheng ◽  
Zhiwei Guo ◽  
Chengqing Yuan
Keyword(s):  
Piston Ring ◽  
Cylinder Liner ◽  
Tribological Performance ◽  
Groove Width ◽  
Surface Groove

scholarly journals Effect of Surface Groove Structure on the Aerodynamics of Soccer Balls

2020 ◽  
Vol 10 (17) ◽  
pp. 5877
Author(s):  
Sungchan Hong ◽  
Takeshi Asai
Keyword(s):  
Lift Force ◽  
Air Flow ◽  
Flight Trajectory ◽  
Soccer Ball ◽  
Supercritical Region ◽  
Air Resistance ◽  
Ball Surface ◽  
Groove Structure ◽  
Surface Groove ◽  
Effect Of Surface

Soccer balls have undergone dramatic changes in their surface structure that can affect their aerodynamics. The properties of the soccer ball surface such as the panel shape, panel orientation, seam characteristics, and surface roughness have a significant impact on its aerodynamics and flight trajectory. In this study, we performed wind-tunnel tests to investigate how the introduction of grooves on the surface of a soccer ball affects the flight stability and aerodynamic forces on the ball. Our results show that for soccer balls without grooves, changing the panel orientation of the ball causes a significant change in the drag coefficient. Soccer balls with grooves exhibited a smaller change in air resistance (Cd) in the supercritical region (20 to 30 m/s; 3.0 × 105 ≤ Re ≤ 4.7 × 105), compared to the ungrooved ball where only the panel orientation was changed. Furthermore, at power-shot speeds (25 m/s), the grooved ball exhibited smaller variations in lift force and side force than the ungrooved ball. These results suggest that a long groove structure on the surface of the soccer ball has a significant impact on the air flow around the ball in the supercritical region, and has the effect of keeping the air flow separation line constant.

Hydrodynamic Lubrication of Conformal Contacting Surfaces With Parabolic Grooves

2012 ◽  
Vol 134 (1) ◽  
Author(s):  
Yonghong Fu ◽  
Jinghu Ji ◽  
Qinsheng Bi
Keyword(s):  
Hydrodynamic Lubrication ◽  
Surface Texturing ◽  
Orientation Angle ◽  
Groove Depth ◽  
Groove Width ◽  
Hydrodynamic Effect ◽  
Geometrical Parameters ◽  
Average Pressure ◽  
Minimum Film Thickness ◽  
Effect Of Surface

The effect of surface texturing in the form of parabolic grooves on the hydrodynamic lubrication properties is investigated in this paper. Numerical simulation of the pressure distribution of lubricant between a textured slider and a smooth, moving slider has been performed. The evaluation criterion of hydrodynamic effect of dimensionless average pressure is calculated and presented with the variation of minimum film thickness, groove width, groove depth, spacing and orientation angle. Optimum values of geometrical parameters such as the dimensionless groove depth, spacing and orientation angle are obtained which correspond to maximum average pressure. It is also noted that the average pressure increases monotonically with increasing groove width. The results show that the hydrodynamic effect can be improved by employing optimized surface texturing design.

Nucleation and initial growth of Pd2Si crystals on Si(111)

1993 ◽  
Vol 51 ◽  
pp. 844-845
Author(s):  
Xianghong Tong ◽  
Oliver Pohland ◽  
J. Murray Gibson
Keyword(s):  
High Vacuum ◽  
Dark Field ◽  
Ultra High Vacuum ◽  
Initial Growth ◽  
Surface And Interface ◽  
Dark Field Imaging ◽  
Transmission Electron ◽  
Initial Stage ◽  
Effect Of Surface

The nucleation and initial stage of Pd2Si crystals on Si(111) surface is studied in situ using an Ultra-High Vacuum (UHV) Transmission Electron Microscope (TEM). A modified JEOL 200CX TEM is used for the study. The Si(111) sample is prepared by chemical thinning and is cleaned inside the UHV chamber with base pressure of 1x10−9 τ. A Pd film of 20 Å thick is deposited on to the Si(111) sample in situ using a built-in mini evaporator. This room temperature deposited Pd film is thermally annealed subsequently to form Pd2Si crystals. Surface sensitive dark field imaging is used for the study to reveal the effect of surface and interface steps.The initial growth of the Pd2Si has three stages: nucleation, growth of the nuclei and coalescence of the nuclei. Our experiments shows that the nucleation of the Pd2Si crystal occurs randomly and almost instantaneously on the terraces upon thermal annealing or electron irradiation.

EFFECT OF SURFACE CONDITIONS ON COERCIVITIES FOR Nd-Fe-B MAGNETS

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-641-C8-642
Author(s):  
Y. Otani ◽  
H. Miyajima ◽  
S. Chikazumi ◽  
S. Hirosawa ◽  
M. Sagawa
Keyword(s):  
Surface Conditions ◽  
Effect Of Surface
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