Dissertation > Excellent graduate degree dissertation topics show

Development of Rotating Point-Contact Friction and Wear Testing Machine and Examination of Transformation Characteristics for Lubrication

Author: HuangZhenYu
Tutor: ZhuXinHe；YanZhiJun
School: Dalian Maritime University
Course: Marine Engineering
Keywords: Lubrication condition Friction pair Wear testing machine Resistance
CLC: TH87
Type: Master's thesis
Year: 2011
Downloads: 49
Quote: 3
Read: Download Dissertation

Abstract


In general, tribology is the science about friction, wear and lubrication. Energy consumption is caused by friction, wear and tear is one of the three main forms of failure for mechanical parts, while lubrication is the most effective measure for reducing friction and controlling wear. A reasonable lubrication design is of great significance to energy conservation, reducing raw material consumption, extending equipment life, improving their reliability and etc. The studying of lubrication theory is a basis for reasonable design, but different friction pair has different lubrication mechanism. In order to study lubrication theory of point-contact friction, CAD, mechanical principle, mechanical design, the inverter, sensor, RC test parameters, other aspects of knowledge and equipment have been used in developing the rotating point-contact friction and wear tester and its testing system. The testing machine is directly drived by motor to make the sample rotate to simulate the relative movement of friction pair, and the using of guide and the slider mechanism, the structure of the machine is compact. It is easy to operate and could be adjusted in the three-dimensional space. The testing system, consisting of hardware components, the controlling and testing tasks is completed by three subunits: Inverter is used in adjusting the speed; load is collected by the pressure sensor system and real-time display; the testing unit of RC and the computer can obtain oil film instantaneous resistance signal acquisition, conversion and storage. A lot of lubrication experiments have been carried out under light load and low speed conditions. The results show that speed and load have different roles on the formation of oil film, and among them, speed has more significant influence. With the change of speed and load, the lubrication mechanism of friction pair also changes, it is show that the experimental system can be effectively measured the change of lubrication under different conditions.The rotating point-contact tribometer in this paper runs smoothly, reliable, and the data obtained are accurate. It can satisfy lubrication test of point-contact friction pair under light load, low speed conditions. All achievements associated in the paper are valuable for the deeper experiment on the point-contact lubrication and for the further research on the lubricating design.

Related Dissertations

  1. Study on Properties of Thermal Shock and Ablation Resistance for Gr/Al-Mg Composites,TB332
  2. Research on Temprature Controling Technology of Laser Diode with Thermoelectric Cooler,TN248.4
  3. The Study on Arabidopsis Thaliana Heat Shock Factor HSFA 1d Response to Formaldehyde Stress,Q945.78
  4. Cultivation and Effects of Environmental Factors on Carrying WSSV Virus of Litopenaeus Vannamei,S945
  5. Design, Synthesis and Biological Evaluation of Novel Podophyllotoxin Derivatives as Antitumor Agents,R284
  6. Study on Relationship between Endothelin-1, Insulin Resistance and Acute Ischemic Cerebrovascular Disease,R743.3
  7. Experimental study of roadway flexible material the wind resistance of the air curtain group,TD724
  8. Research and Development of Wear Resistance for Physically Disabled Men Jackets,TS941.2
  9. Monitoring of Insecticide Resistance and Resistance Risk Assessment for JS118 in the Rice Stem Borer, Chilo Suppressalis (Walker),S435.112.1
  10. An Approach for Identifying a Plant Resistance Gene Based on the Random Forest,Q943
  11. Situ synthesis of mullite stone whisker toughening microwave metallurgical corundum - mullite Refractories,TQ175.6
  12. The Study of Yeast Frost-resistance and Application in Frozen Dough,TS213.2
  13. Study on the Resistant Mechanism of Japanese Foxtail (Alopecurus Japonicus Steud.) to Haloxyfop-R-Methyl,S451.2
  14. The Resistance and Resistance Chemical Control of Japanese Foxtail (Alopecurus Japonicus Steud.) to Haloxyfop-R-Methyl and Its Cross Resistance, Multiple Resistance with Different Herbicides,S451.2
  15. Using an F2 Screen to Estimate the Frequency of Resistance Alleles to Cry1Ab in Wenzhou Population of Chilo Suppressalis and Cloning of an Aminopeptidase N Gene CsAPN3,S435.112.1
  16. Assessment of Resistance Risk in Spodoptera Exigua (Hubner) and Spodoptera Litura (Lepidoptera: Noctuidae) to Chlorantraniliprole,S433
  17. Study on Resistance of American Sloughgrass (Beckmannia Syzigachne (Steud.) Fernald) Population in Wheat Field to Fenoxaprop-P-Ethyl,S451.221
  18. Effect of Planting Densities and Modes on Lodging Resistance of Stem in Summer Maize,S513
  19. Transformation of RdreBlBI Gene Drived by Rd29A in ’Benihope’ Strawberry,S668.4
  20. Incidence and Mechanisms of Insecticides Resistance to Pyrethroids and Endosulfan in Colorado Potato Beetle, Leptinotarsa Decemlineata (Say),S435.32
  21. Incidence and Mechanisms of Insecticide Resistances to Organophosphates and Carbamates in Colorado Potato Beetle, Leptinotarsa Decemlineata (Say),S435.32

CLC: > Industrial Technology > Machinery and Instrument Industry > Instruments, meters > Material testing machine and test equipment
© 2012 www.DissertationTopic.Net  Mobile