presentation is about the basics of Mechanical Engineering.

1. Mechanical Engineering
by
Dr Rajesh Kumar

2. Contents:
 What is Engineering
 Introduction of Mechanical Engineering
 Structure of Mechanical Engineering
 Basic Mechanical Engineering
 Thermodynamics
 Steam engine

3. “What is Engineering”
• An engineer is a person who uses scientific
knowledge to solve practical problem.
• Engineers create new things and make old
things better.

4. What are the Different Fields in
Engineering?  Mechanical
 Electrical
 Computer/ IT
 Mechanical
 Civil
 Aerospace
 Petroleum and Chemical
 Industrial
 Acoustics
 Biomedical
 Materials
 Nuclear
 Agricultural
 Environmental

5. Mechanical Engineering
 Mechanical engineering is one of broadest
studies in engineering
 The design and creation of mechanical
technologies that benefit society
 They utilize power to work with all types of
mechanical devices, and all types of
manufacturing and plant designs

6. Foundations in Mechanical
Mathematics
Physics
Thermodynamics
and heat transfer
Materials science
Gears and systems
Fluid mechanics
Structural Analysis

7. Basic Mechanical Engineering

8. Scheme:

9. Syllabus

10. Classifications of materials:
1. Ferrous
2. Non Ferrous

11. Common Mechanical properties:

12. Mechanical property testing:
1. Destructive (specimen broken)
2. Non destructive (specimen not broken)
Testing methods:
 Full scale prototype product (ON SITE)
 Small scale specimen in laboratory

13. Most common tests:
 Tensile test
 Compression test
 Shear and bending test
 Torsion test
 Hardness test
 Impact test
 Fatigue test
 Creep test

14. TENSILE TEST:
Machine used- Tensometer
UNIVERSAL TESTING MACHINE

15. SPECIMAN:
 Specimen is prepared according to ASTM.
 Or BIS (Indian standard)
 Cross section may be circular or rectangular

16. COMPRESSION TEST:
Machine used- Tensometer
UNIVERSAL TESTING MACHINE

17. SHEAT AND BENDING TEST (FLEXURE):
Machine used- Tensometer
UNIVERSAL TESTING MACHINE

18. TORSION TEST:
TERSION TESTING MACHINE

19. HARDNESS TEST:
Hardness- surface property
Indenters are used. Indenters may be spherical ball, cone shape, pyramid shape.
Various types of harness tests:
 Mohs test (scale range: 0 to 10)
 Brinell’s hardness test (scale range: 0 to 3000)
 Vicker’s hardness test (scale range: 0 to 3000)
 Rockwell’s hardness test (scale range: 0 to 1000)
 Knoop’s hardness test (microscopic areas)
 Shore’s hardness test (for rubber, plastic, paper etc. )
 Barcol’s, jominy’s and rebound hardness tests.

20. BRINELL HARDNESS TEST:

21. VICKERS HARDNESS TEST:

22. Impact testing:
Impact testing machine

23. Impact tests:
1. Izod test
2. Charpy test

25. Fatigue testing:

27. Thermodynamics:
Branch of science in which we study of conversion of heat in to work.
 Heat is low grade energy .
 Work is high grade energy.

28. Laws of Thermodynamics:
 Zeroth law
 First law
 Second law
 Third law

30. Steam Engine (Boilers)
 Fire tube (Lancashire Boiler)
 Water tube (Babcock and Wilcox Boiler)