This course focuses on basic concepts in tribology. The term 'tribology' is defined as : the science and technology of interacting surfaces in relative motion and of the practices related thereto [OECD. 1969]. By combining lectures and exercises, the course enables students to understand and acquire the fundamentals of tribology which are important for developments of real applications in mechanical engineering.
The aim of this lecture is to provide a broad based introduction to the interdisciplinary scientific discpline of tribology in engineering fields, including state of art in the information and practical solutions of problems.
By the end of this course, students will be able to:
1) Understand basic aspects of friction and wear.
2) Understand and derive governing equations of hydrodynamic lubrication.
3) Understand basic aspects of surface roughness and contact mechnics.
4) Understand basic aspects of boundary lubrication.
5) Understand basic aspects of surface treatment.
Tribology, Friction, Fluid lubrication, Boundary lubrication, Surface modification
|✔ Specialist skills||Intercultural skills||Communication skills||Critical thinking skills||Practical and/or problem-solving skills|
The course is taught in lecture style. Exercise problems will be assigned every 2 or 3 classes. Required learning should be completed outside of the classroom for preparation and review purposes.
|Course schedule||Required learning|
|Class 1||Introduction (T.TANAKA) - fundamentals of tribology||Understand the fundamental of tribology such as necessity, history, technical words et al.|
|Class 2||Surface and friction 1 (T.TANAKA) -contact of smooth surfaces||Understand the surface, friction and contact of smooth surfaces.|
|Class 3||Fundamental of fluid film lubrication (T.TANAKA) - Stribeck curve||Understand viscosity and Stribeck curve|
|Class 4||Fluid lubrication theory 1 (T.TANAKA) - Reynolds equation||Derive Reynolds equation|
|Class 5||Fluid lubrication theory 2 (S.TANAKA) - journal bearings||Understand the hydrodynamic lubrication theory of journal bearings.|
|Class 6||Fluid lubrication theory 3 (S.TANAKA) - elastohydrodynamic lubrication||Understand EHL(elastohydrodynamic lubrication) theory|
|Class 7||Surfaces and friction 2 (S.TANAKA) - contact of rough surfaces||Understand surface roughness and contact of rough surfaces.|
|Class 8||Surfaces and friction 3 (HIRATA) -friction of clean surfaces||Understand surface layer of solid.|
|Class 9||Boundary lubrication 1 (HIRATA) - surface energy||Understand surface energy.|
|Class 10||Boundary lubrication 2 (HIRATA) - adsorption||Understand boundary lubrication and adsorption|
|Class 11||Boundary lubrication 3 (HIRATA) - lubricant properties||Understand liquid/solid lubricants.|
|Class 12||Wear (OHTAKE) - wear map||Understand the fundamental of wear.|
|Class 13||Tribomaterials and surface modification (OHTAKE)||Understand the tribomaterials and surface treatment method.|
|Class 14||Surface modification 2 (OHTAKE) - properties of modified surfaces||Understand the mechanical properties of modified surfaces.|
To enhance effective learning, students are encouraged to spend approximately 100 minutes preparing for class and another 100 minutes reviewing class content afterwards (including assignments) for each class.
They should do so by referring to textbooks and other course material.
KATO, T. and MASUKO,M. Fundamentals of Tribology. Tokyo:Baifukan, (Japanese)
YAMAMOTO, Y. and KANETA, M. Tribology. Tokyo. Rikogakusha (Japanese)
Students' knowledge of Triboloby, and applications will be assessed.
Final exams 80%, exercise problems 20%.