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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean Society of Tribologists and Lubrication Engineers
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Journal DOI :
The Korean Society of Tribologists and Lubrication Engineers
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Volume & Issues
Volume 26, Issue 6 - Dec 2010
Volume 26, Issue 5 - Oct 2010
Volume 26, Issue 4 - Aug 2010
Volume 26, Issue 3 - Jun 2010
Volume 26, Issue 2 - Apr 2010
Volume 26, Issue 1 - Feb 2010
Selecting the target year
Effects of Process Parameters on the Wear Behavior of Thermally Sprayed Ni-based Hard Coatings
Kim, Kyun-Tak ; Kim, Yeong-Sik ;
Journal of the Korean Society of Tribologists and Lubrication Engineers, volume 26, issue 3, 2010, Pages 157~161
This study investigated the effects of spray parameters on wear behavior of the Ni-based hard coatings fabricated by thermal spray process. The experiment was designed by an orthogonal array, the Ni-based hard coatings were fabricated according to this experimental design. The wear test was performed on these coatings using ball-on-disk wear tester. The ANOVA was used to analyze the effects of spray parameters on the wear rate of these coatings, as a result, oxygen gas flow and acetylene gas flow were determined as main factors effected on the wear rate. The effects of these two factors on wear behavior were observed by using SEM and EDX.
Effect of the Ti-series Coating on the Friction and Wear Characteristics of SCM415 Steel
Jang, Jeong-Hwan ; Tak, Sung-Hoon ; Zhang, Qi ; Xu, Zhezhu ; Lyu, Sung-Ki ;
Journal of the Korean Society of Tribologists and Lubrication Engineers, volume 26, issue 3, 2010, Pages 162~166
The purpose of this study is to show the friction and wear characteristics on the vapor deposited Tiseries coating layers on the SCM415 steel. In this research, frictional wear characteristic of coating materials such as TiN, TiCN, TiAlN was investigated under room temperature, normal air pressure and dry lubricating condition. Therefore this study carried out research on the friction coefficient, micro hardness(Hv), roughness, SEM on the vapor deposited coating layers on the SCM415 steel.
Apparatus for Monitoring Oil Oxidation Using a Plurality of UV Fluorescence Light-reflecting Members
Kong, H. ; Han, H.G. ; Markava, L.V. ;
Journal of the Korean Society of Tribologists and Lubrication Engineers, volume 26, issue 3, 2010, Pages 167~174
An apparatus for measuring oil oxidation was developed, which is capable of being mounted to mechanical devices for detecting power of fluorescent light reflected from oil in real time as an indication of the oil oxidation. This device has an advantage over conventional fluorescence spectrometers where the thin film is required for the measurement. Clean and used oil samples (mineral and synthetic oils) were tested by the developed apparatus that calculates a fluorescence quantum yield and a light absorption coefficient of the oil based upon the signals from the two light-receiving members and evaluates the degree of oil oxidation of test oils based on the fluorescence quantum yield. Results generally show that the developed device is able to effectively evaluate oil oxidation characteristics on-site in the field.
The Design Review for Lubrication System of an Internal Combustion Engine
Chun, Sang-Myung ;
Journal of the Korean Society of Tribologists and Lubrication Engineers, volume 26, issue 3, 2010, Pages 175~183
It is not too much to say that, at the beginning of engine development, the most important areas for a good engine concept design is the lubrication system design. So, between right after finishing concept design and before procuring the engine, it is necessary to carry out the system lubrication analysis for the initially designed lubrication system and the related lubricating parts. Therefore, in this paper, it is to describe the results of a design review carried out the numerical net work analysis on the engine bearings and the lubrication system of an initially designed 2.0 L DOHC engine.
Tactile Response Characteristics of Haptic Displays based on Magneto-Rheological Fluids
Jang, Min-Gyu ; Choi, Jea-Young ; Lee, Chul-Hee ;
Journal of the Korean Society of Tribologists and Lubrication Engineers, volume 26, issue 3, 2010, Pages 184~189
In this paper, tactile response characteristics in medical haptic interface are investigated to characterize the feeling of contact between the finger skin and the organic tissue when a finger is dragged over tissue. In order to represent the tactile feeling, a prototype tactile display incorporating Magneto-Rheological (MR) fluid has been developed. Tactile display devices simulate the finger's skin to feel the sensations of contact such as compliance, curvature and friction. Thus, the tactile display provides the surface information of organic tissue to the surgeon using different actuating mechanisms ranging from the conventional mechanical motor to the smart material actuators. In order to investigate the compliance feeling of human finger's touch, vertical force responses of the tactile display under the various magnetic fields have been assessed. Also, frictional resistive force responses of the tactile display are investigated to simulate the action of finger's dragging. From the results, different tactile feelings are observed as the applied magnetic field is varied and arrayed magnetic poles combinations. This research gives a smart technology of tactile displaying.
The Lubricity of GTL Fuel by Additives
Lim, Young-Kwan ; Jung, Choong-Sub ; Kim, Jong-Ryeol ; Yim, Eui-Soon ;
Journal of the Korean Society of Tribologists and Lubrication Engineers, volume 26, issue 3, 2010, Pages 190~198
GTL(gas-to-liquid) fuel produced by the Fischer-Tropsch process using carbon monoxide(CO) and hydrogen(H2) is expected to be one of the environmental friendly fuel for alternative and blended to petrodiesel. But GTL have poor lubricity due to paraffin as main component of GTL which is not involve polar materials. In this paper, we had investigated the lubricity improvement of GTL fuels with various lubricants using HFRR(high frequency reciprocating rig).