(1) Can deepen understanding of the complex friction and wear phenomena that occur on relative motion surfaces, and establish a method for evaluating them in an appropriate manner.
(2) Can establish effective use of friction and methods to control friction and wear such as lubrication.
(3) Can establish various guidelines and specific methods for designing frictional parts of equipment.
Outline:
The aim of this course is to deepen the understanding of tribological problems—i.e., the complex friction and wear phenomena that occur on relative motion surfaces—and to explain how to evaluate them in an appropriate manner, and also explain the effective use of friction and methods to control friction and wear such as lubrication. Students will also learn the various guidelines and specific methods for designing frictional parts of equipment.
Style:
Classes will focus on a lecture style format and have exercises, assignments, and group work as appropriate.
The contents of the report will be instructed according to the progress of the class and the students' levels of understanding.
The report assignments are as follows:
1) An exercise about the contact condition between two objects. 2) An exercise for friction coefficients which take into account interface shear strength. 3) A survey and summary of various types of wear. 4) A study on tribology application technologies. 5) The derivation of the double integral part of the Reynolds equation. 6) A survey on solid lubricants and greases. 7) An exercise on bearing design methods. 8) A study on hard and soft thin layers. 9) An exercise on the amount of wear. 10) Literature research on tribology
This course is based on and assumes students have a basic knowledge of the following subjects: Strength of Materials I (compulsory in year 3), Fluid Mechanics I (compulsory in year 4), and Engineering Design II (compulsory in year 4).
Notice:
Before taking the course, read the text, familiarize yourself with the content, and be prepared to ask questions during the course. This course's content will amount to 90 hours of study in total. These hours include the learning time guaranteed in classes and the standard self-study time required for pre-study / review, and completing assignment reports.
Students who miss 1/3 or more of classes, miss 5-10 minutes of a student's presentation, or fail to submit a report will not be eligible for a passing grade.
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Theme |
Goals |
| 2nd Semester |
| 3rd Quarter |
| 1st |
What is tribology?
Explain an outline of tribology, lubrication methods, and lubrication by oil. |
Learn an outline of tribology, lubrication methods, and about lubrication by oil.
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| 2nd |
Solid surface contact I
Explain the properties of solid surfaces and the structure and properties of surface layers in order to properly understand tribology phenomena. |
Learn about the nature of solid surfaces and the structure and properties of surface layers
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| 3rd |
Solid surface contact II
Explain the mechanisms for two-surface contact and true contact area wear with exercise problems. |
Learn about the mechanisms for two-surface contact and true contact area wear.
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| 4th |
Friction between solid surfaces I
Explain dry friction and lubricated friction, Amonton-Coulomb's laws, the causes of friction, adhesion theory of friction, and the formula for friction theory. |
Learn about friction causes and friction theory.
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| 5th |
Friction between solid surfaces II
Explain the temperature rises of friction surfaces, the speed characteristics of friction and stick-slip, friction properties in a vacuum, the effects of temperature on friction, and methods for testing friction. |
Learn about friction characteristics and how to test friction.
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| 6th |
Wear on solid surfaces I
Define and classify wear and explain the theoretical handling of each of the important abrasives. |
Learn about the definition and classification of wear.
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| 7th |
Solid surface wear II
Explain the concept of wear maps, and discuss testing methods of wear. |
Learn about wear maps and wear testing methods.
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| 8th |
Fluid lubrication I
Explain the physical significance of fluid lubrication and its principles. |
Learn about the physical significance of fluid lubrication.
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| 4th Quarter |
| 9th |
Fluid lubrication II
Explain Reynolds' fluid lubrication theory and the pressure distribution analysis of bearings. |
Learn about Reynolds' fluid lubrication theory and the pressure distribution analysis of bearings.
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| 10th |
Boundary and mixed lubrication I
Explain the concept of boundary and mixed lubrication, and boundary membrane's lubricating properties . |
Learn about boundary and mixed lubrication.
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| 11th |
Boundary and mixed lubrication II
Explain the types, properties, and applications of grease and solid lubricants that are used for lubrication in situations where oil cannot. |
Learn about the types, properties, and applications of grease and solid lubricants.
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| 12th |
Surface reforming technology
Explain the physical significance of surface reforming technology, its method, and examples of friction wear improvement and future prospects. |
Learn about the physical significance of surface reforming technology, its methods, and examples of friction wear improvement.
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| 13th |
Bearings design
Explain the basic aspects of design using journal bearings as an example. |
Learn about the basic aspects of bearing design using journal bearings as an example.
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| 14th |
Applications of tribology in current technologies
Introduce a case from the many current technologies where tribology plays an important role and explain the relationship using basic knowledge. |
Learn about the current application of tribology in current technologies.
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| 15th |
Presentation
Introduce videos or research related to tribology. |
Learn about research related to tribology.
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| 16th |
No final exam
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