Tribologi1

8/13/2019 Tribologi1

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Pertemuan 1

Pengantar Tribologi

Disampaikan Oleh:Sunardi, S.T., M.Eng.

[email protected]
mailto:[email protected]:[email protected]


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1. Kehadiran minimal mahasiswa untukdapat mengikuti UAS adalah minimal 80%.Kurang dari 80%, maka nilai maksimal C.

2. Selama perkuliahan tidak diperkenankan

memakai kaos tanpa kerah dan sandaljepit.

3. Prosentase penilaian: 10%absensi,30%tugas, 30%UTS dan 30%UAS.

4. Protes nilai diperkenankan dengancatatan: bila mahasiswa benar akandinaikkan satu grade, dan jika mahasiswasalah akan diturunkan satu grade.


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1. Introduction2. Surface Roughness Analysis and

Measurement Techniques3. Contact between solid surfaces4. Friction5. Wear

6. Lubricants and Lubrications7. Application of tribology concepts in

industrial components and systems, e.g.bearings, gears, etc.


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1. M J Neale, 2001, Lubrication and ReliabilityHandbook, Butterworth Heinemann

2. I.M.Hutchings, 1995, Tribology: Friction andWear of engineering materials, Arnold,

London3. B.Bhushan, 2001, Modern Tribology

Handbook, Principles of Tribology, CRC Press4. T.A.Stolarski, 2000, Tribology in Machine

Design, Butterworth-Heinemann5. B.J.Hamrock, 1994, Fundamentals of Fluid

Film Lubrication, McGraw Hill6. ASM Metals Handbook, Vol 18, Friction,

Lubrication, Wear Technology


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Tribology is an art of providing

solutions to the problems which are

of great economic significance,namely maintenance, reliability,

and wear of equipment starting

from house hold appliances tospacecrafts.


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It is necessary to have an in depth

knowledge in many areas such as

chemistry of lubricants, physics offluid flow, surface topography,

contact mechanics, material

science, mathematics, andmechanical engineering.


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1.Deals with friction, wear and lubrication2. Two aspects

Science: Basic mechanismsTechnology: Design, manufacture, maintenance


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1. Low friction: satisfactory

operation of joints (hinges on

door, human joints, bearings)

2. High friction: brakes and

clutches, shoe and floor forwalking, a vehicle tyre and the

road surface


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1. Wear: damage to one or both surfaces,progressive loss of material.

2. Leading to increase clearances

between the moving components,unwanted freedom of movement andloss of precision, often vibration,increased mechanical loading andmore rapid wear, and sometimes

fatigue failure.3. The loss of wear of relatively smallamounts of material can be enough tocause complete failure of large andcomplex machines.


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1. High wear rates: in grinding and

polishing, employ wear processes

to remove material rapidly and ina controlled manner.

2. One method of reducing friction,and wear, is to lubricate the

surfaces


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The word tribology (from

the Greek: rubbing orattrition triboz),in 1966 by

UK government committee


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Reduction in energy consumption from lower friction 5%

Reduction in manpower 2%

Savings in lubricant cost 2%

Savings in maintenance and replacement cost 45%

Savings in losses resulting from breakdowns 22%

Savings in investment through greater availability and

higher efficiency

4%

Savings in investment through increased life of plant 20%


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