Mechanical Engineering

1. Introduction to Mechanical
Engineering
Dr. Rohit Singh Lather
Associate Professor
“Scientists discover the world that exists;
engineers create the world that never was.”
-Theodore Von Karman

2. INTRODUCTION TO MECHANICAL ENGINEERING
• What is engineering ?
• What do mechanical engineers do ?
• The basic engineering process ?

3. WHAT IS AN ENGINEERING ?
Engineering is the profession in which
knowledge of the mathematical and
natural sciences gained by
study, experience, and practice is applied
with judgment to develop ways to utilize, economically,
the materials and forces of nature
for the
benefit of mankind

4. The Million Dollar Question
WHY BE AN ENGINEER ?

5. WHY MIGHT YOU WANT TO BE AN ENGINEER?
• You have high goals in life
• Want to get a strong college education!
• You like math and sciences, and would like to apply them to real world
problems!
• You enjoy hands-on work and tinkering with things!
• You were told that engineers make a lot of money!
• You were told that you can get a good job with an engineering degree!
• You want to help humanity!

6. MECHANICAL ENGINEERING…....
• Mechanical engineering is the second largest and one of the oldest
disciplines
• You might find the subject both exciting and challenging
• Almost every industry needs mechanical engineers
• The curriculum is sufficiently broad so students can take various
career paths upon graduation
• Perhaps the broadest of all the engineering disciplines
• Finding creative solutions to difficult problems!
• Working with motion, energy, forces, and materials
• Concerned with analysis, design, manufacture and operation of
areas such as:
Energy/Defense/Environment/Health & Bio/Manufacturing/ Transportation

7. WHAT WILL YOU STUDY AS AN ME STUDENT ?
Human and Social Studies: arts,
humanities, social sciences, ethics, law
Statics, Dynamics, Kinematics, Mechanics of
solids and fluids
Thermodynamics, Heat Transfer, Internal
Combustion Engines, Refrigeration
Materials: Materials engineering
& processing
Machines: graphics, design, machine
elements, controls, Machine Design, FEM
Economics: engineering economic analysis,
cost engineering
Overall foundation: math, physics, chemistry, analysis skills, communication skills, computation
skills
Electives: Automobile, Design, Industrial,
Production, Renewable Energy
MECHANICAL ENGINEERING: TYPICAL PROGRAM
Core
Fundamental courses of
Mechanical Engineering
Mechanical Systems
Vibrations, Controls, Mechatronics, MEMS
Electives
Departmental Electives &
Open Electives

8. WHAT MECHANICAL ENGINEERS DO ?
Work on Car Engines?
Make a Plane?
Work on a Computer?
Make a Robot?Build a Bridge?
Drive a Train?

9. DID WE MENTION ?
The salary of a mechanical engineer in India ranges from 2.2 L – 25 L
Depending on the type of job Field
“There is a high economic return for an engineering degree even if a graduate
works in a non engineering field”.
- From Neeta P. Fogg, Paul E. Harrington and Thomas F. Harrington
College majors handbook with Real Career Paths and Payoffs: The Actual Jobs, Earnings
and trends for Graduates of Sixty College majors,
2nd ed. (Indianapolis: JIST Publishing 2004

10. MECHANICAL ENGINEERING JOB DESCRIPTIONS
• Graduate Engineer Trainee
• Graduate Management Trainee
• Analytical Engineer
• Design Engineer
• Test Engineer
• Manufacturing Engineer
• Development Engineer
• Research Engineer
• Sales Engineer
• Engineering Manager
• Consulting Engineer

11. WHAT TYPE OF JOBS DO ME’S HAVE?
• Design
- Product Design, Machine Design, System Design
• Manufacturing
• Process Development & Quality
• Maintenance and Operations
• Research and Development
• Project Management
• Testing
• Sales or Technical Sales
• Management

12. • Electric power generation
• Oil well drilling and extraction equipment
• Renewable Energy – fuel cells, wind power, hydroelectric, nuclear, geothermal,
wind power, biomass, hydrogen, solar
• Analysis
- Equipment failures to improve performance and reliability
• Heat transfer, vibration, sound
• Fabrication
- Coordinate fabrication of equipment
- Develop improved fabrication techniques and methods
• Testing
- Test quality, performance, safety, and reliability of products,
equipment, processes

13. • Research and Development
• Sales
- Work as technical salespersons for companies that manufacture various
products and equipment
- Work as a general salesperson for companies
• Maintenance and Operations
- Keep various plants and processes operating at optimum performance
- Operations supervision and management
• Management
• Other
- Law School,
- Business School

14. Major Areas of Research
• Automotive Engineering
• Acoustics and Dynamics
• Automation and Mechatronics
• Bioengineering
• Computer Aided Design
• Fluid Mechanics
• Microelectromechanical Systems (MEMS)
• Heat Transfer
• Combustion and Energy Systems
• Manufacturing
• Mechanics of Materials
• Tribology
• Nuclear Engineering

15. MECH. ENG. TOP 10: ASME SURVEY
1. Automobile: High-power lightweight engines, efficient mass- manufacturing
2. Apollo: Saturn V launch vehicle (7.5 million pound thrust), command and service module,
lunar excursion module
3. Power generation: Conversion of stored energy into electricity, manipulation of
chemical-, kinetic, potential-, and nuclear- energy, large-scale power production
4. Agriculture mechanization: Powered tractors, mechanized harvesting, high-capacity
irrigation pumps, computerized crops management
5. Airplane: Propulsion (jet engines), lightweight materials, electromechanical control
systems
6. Integrated circuit mass production: IC manufacturing machines, alignment systems,
temperature- and vibration control, motors, bearings
7. Air-conditioning and refrigeration: Compressors, refrigerants, heat exchangers
8. Computer-aided engineering technology: Computer-aided design, analysis,
manufacturing, virtual collaboratives
9. Bioengineering: Imaging, prosthetics, minimally invasive surgery, tissue engineering
10.Codes and standards: Interchangeability, interoperability, interconnectivity

16. WHAT CAN MECHANICAL ENGINEERS DO?
Design (Product, Machine and System Design)
- Machines that manufacture and package all varieties of products
- Rotating equipment - pumps, compressors, blowers,turbomachinery
- Internal combustion engines
- Storage tanks, piping systems and pressure vessels - reactors, heat exchangers,
boilers
- Sports equipment, consumer goods and products (everything from golf balls to
soda cans to roller coasters)
- Material handling equipment - conveyers, robots, production lines
- Vehicles - cars, trucks, heavy equipment, buses, aircraft, ships

17. THE ENGINEERING DESIGN PROCESS
(CORE OF ENGINEERING)
Problem Identification
Get with Customer or your
own idea
Conceptual Design
Ideas, Sketches and Solution
Lists
Refinement
Computer Modeling, Data
Base Development
Testing
Analysis and Simulation of
All Design Aspects
Prototyping
Visualizing and Improving
the Design
Communication
Engineering Drawings,
Specifications
Production
Final Design, Manufacturing,
Distribution
CAE
Computer Aided Engineering

18. Employers responding to NACE’s Survey rated these job qualities
(a five point Scale in order of importance) in 2005
• Communication Skills (4.7/5 Average)
• Honesty / Integrity (4.5/5 Average )
• Interpersonal Skills (4.5/5 Average)
• Strong Work Ethics (4.5/5 Average )
• Team Work Skills (4.5/5 Average)
• Analytical Skills (4.4/5 Average)

19. Attributes employers
seek on a candidate's
resume

20. WHO’S LOOKING TO HIRE AN ENGINEER ?
• Automotive & OEM Suppliers
• Construction Equipment
• Construction Companies
• Ship & Railroad Companies
• Airplane Manufacturing
• Power Generation
• Nuclear
• Alternative Fuel
• Energy
• Utility Companies
• Oil and Gas Companies
• Chemical Companies
• Environmental
• Academia (Teaching)
• Financial Companies
• Pharmaceutical & Health Care
• Biomedical
• Sports Equipment Mfg.
• Computer-Aided Design
• Automation
• Robotics
• Electronics Industries
• Appliance Manufacturers
• HVAC & Refrigeration
• Toy Manufacturing
• Furniture Manufacturing
• Paper Industry
• Food & Beverage Industry
• Telecommunications
• National Labs
• Aeronautical
• Government Agencies
• Consulting Companies

21. “Coming together is a beginning; keeping together is progress;
working together is a success.”
- Henry Ford