# JNTUH B.TECH R18 4-1 Syllabus For Tribology PDF 2022

### Get Complete Lecture Notes for Tribology on Cynohub APP

You will be able to find information about Tribology along with its Course Objectives and Course outcomes and also a list of textbook and reference books in this blog.You will get to learn a lot of new stuff and resolve a lot of questions you may have regarding Tribology after reading this blog. Tribology has 5 units altogether and you will be able to find notes for every unit on the CynoHub app. Tribology can be learnt easily as long as you have a well planned study schedule and practice all the previous question papers, which are also available on the CynoHub app.

All of the Topic and subtopics related to Tribology are mentioned below in detail. If you are having a hard time understanding Tribology or any other Engineering Subject of any semester or year then please watch the video lectures on the official CynoHub app as it has detailed explanations of each and every topic making your engineering experience easy and fun.

### Tribology Unit One

#### UNIT – I

Study of various parameters: Viscosity, flow of fluids, viscosity and its variation, absolute and kinematic viscosity, temperature dependent variation, viscosity index, determination of viscosity, different viscometers used.
Hydrostatic lubrication: Hydrostatic step bearing, application to pivoted pad thrust bearing and other applications, hydrostatic lifts, hydrostatic squeeze films and its application to journal bearing.

### Tribology Unit Two

#### UNIT – II

Hydrodynamic theory of lubrication: Various theories of lubrication, petroffs equation, Reynold’s equation in two dimensions -Effects of side leakage – Reynolds equation in three dimensions, Friction in sliding bearing, hydro-dynamic theory applied to journal bearing, minimum oil film thickness, oil whip and whirl anti -friction bearing.

### Tribology Unit Three

#### UNIT – III

Friction and power losses in journal bearings: Calibration of friction loss, friction in concentric bearings, bearing moduIus, Sommer-field number, heat balance, practical considerations of journal bearing design

### Tribology Unit Four

#### UNIT – IV

Air lubricated bearing: Advantages and disadvantages, application to Hydrodynamic journal bearings, hydrodynamic thrust bearings. Hydrostatic thrust bearings. Hydrostatic bearing Analysis including compressibility effect. Study of current concepts of boundary friction and dry friction.

### Tribology Unit Five

#### UNIT- V

Types of bearing oil pads: Hydrostatic bearing wick oiled bearings, oil rings, pressure feed bearing, partial bearings -externally pressurized bearings. Bearing materials: General requirements of bearing materials, types of bearing materials.

### Tribology Course Objectives

To expose the student to different types of bearings, bearing materials,
To understand friction characteristics and power losses in journal bearings.
To learn theory and concepts about different types of lubrication.

### Tribology Course Outcomes

Understanding friction characteristics in journal bearings.
Knowledge about different theories of lubrication to reduce friction and wear.

### Tribology Text Books

Engineering Tribology/ Gwidon W. Stachowiak & Andrew W. Batchelor/ Elesevier
Engineering Tribology/ Prasanta Sahoo / PHI

### Tribology Reference Books

Tribology – B.C. Majumdar
Fundamentals of Tribology, Basu, Sen Gupta and Ahuja/PHI
Tribology in Industry: Sushil Kumar Srivatsava, S. Chand &Co.

### Scoring Marks in Tribology

Information about JNTUH B.Tech R18 Tribology was provided in detail in this article. To know more about the syllabus of other Engineering Subjects of JNTUH check out the official CynoHub application. Click below to download the CynoHub application.