Engineering or Mechanical Engineering?

ProCSi 10-07-08

Gilbert Haddadghaddad@wisc.edu

Outline

- Introduction

- Engineering Achievements

- Mechanical Engineering and Our World

- Disciplines of Mechanical Engineering

- Conclusion

- Brain teaser

Introduction

What is Engineering?

Introduction

Engineering is:

“ The profession in which a knowledge of the mathematical and natural sciences gained by study, experience, and practice is applied with judgment to develop ways to use economically the materials and forces of nature for the benefit of mankind “

“ The application of science to the needs of humanity”

“The creative application of scientific principles to design or develop structures, machines, apparatus, or manufacturing processes, or works utilizing them singly or in combination; or to construct or operate the same with full cognizance of their design; or to forecast their behavior under specific operating conditions; all as respects an intended function, economics of operation and safety to life and property”

“Engineering is the discipline and profession of applying scientific knowledge and utilizing natural laws and physical resources in order to design and implement materials , structures, machines, devices, systems, and processes that realize a desired objective and meet specified criteria”

Greatest Engineering Achievements of the 20th Century

• Electrification• Automobile• Airplane• Water supply and

distribution• Electronics• Radio and Television• Agricultural

Mechanization• Computers• Telephone• Air Conditioning and

Refrigeration

• Highways• Spacecraft• Internet• Imaging• Household Appliances• Health Technologies• Petroleum and

Petrochemical Technologies

• Laser and Fiber Optics• Nuclear Technologies• High-performance

Materials

Engineering Disciplines

Aeronautics and astronautics

Agricultural engineering

Biological engineering

Chemical engineering

Civil engineering

Electrical engineering

Engineering science

Financial engineering

Fire protection engineering

Industrial engineering

Mechanical engineeringMaterials engineeringMilitary engineerNuclear engineeringOcean engineeringOptical engineeringPetroleum engineeringPlanetary engineeringSoftware engineeringSocial engineeringStellar engineeringTextile engineering

Mechanical Engineering and Our World

What does a MECHANICAL engineer do???

Mechanical Engineering and Our World

Mechanical engineering is an engineering discipline that involves the application of principles of physics for analysis, design, manufacturing, and maintenance of mechanical systems.

Mechanical engineers use the core principles as well as other knowledge in the field to design and analyze motor vehicles, aircraft, heating and cooling system, watercraft, manufacturing plants, industrial equipment and machinery, robotics, medical devices and MORE!

Mechanical Engineering

Some core subjects in mechanical engineering are:

-Statics and dynamics-Strength of materials -Solid dynamics-Instrumentation and measurement-Thermodynamics, heat transfer, energy conversion, and HVAC-Fluid mechanics, and fluid dynamics-Mechanism design (including kinematics and dynamics)-Manufacturing processes-Hydraulics and pneumatics-Engineering design-Mechatronics and control theory- Other

A combination of these core subjects, leads toresearch in engineering: Creating solutions for humans needs!

Disciplines of Mechanical Engineering

Thermal Science:

The discipline that encompasses:

-Thermodynamics

- Fluid mechanics

- Heat transfer

Dynamics Vibrations and Acoustics:

Characterization of mechanical components, structures, systems and materials, to support product development, safety, weight minimization and component optimization for aerospace, automotive, electronics and general manufacturing.

Disciplines of Mechanical Engineering

Dynamics and vibrations

Dynamics and vibrations

Mechatronics, Robotics and Automation:

It is the science and technology of sensors and robots; their manufacture, design and application

Disciplines of Mechanical Engineering

Robots have various applications:

- Industrial robots

- Aerospace robots

- Healthcare robots

- Human-like robots

- Military robots

Robot

Design and Manufacturing:

It includes the design and manufacturing of machines, systems, products, mechanisms and process.

Disciplines of Mechanical Engineering

Design

Polymer Engineering:

Focuses on advancing technologies for a wide range of polymer and polymeric composite manufacturing processes.

Disciplines of Mechanical Engineering

Biomechanical Engineering:

It deals with the development of fundamental and applied engineering knowledge related to biomechanical systems, and the application of engineering expertise towards the design and development of leading-edge technologies to help people with disabilities.

Disciplines of Mechanical Engineering

Disciplines of Mechanical Engineering

Energy Engineering

Studies different types of energy (electrical, mechanical, fuel, …) to implement efficient systems that can be used

Boom of Green Energy

Computer Aided Engineering

Apply mathematical theories, computationally efficient algorithms, and other tools for modeling, design, and simulation of a wide range of engineering artifacts and processes. Some focus areas can be mechanical, micro/nano-mechanical, electro-mechanical, thermal, fluid, and other multi-disciplinary and multi-scale systems.

Disciplines of Mechanical Engineering

Simulation

Computer Aided Engineering

Conclusion

Mechanical engineers are professional problem-solvers

who strive to find practical solutions that will benefit people

or society.

Brain teaser

The drive from Oakland to Pinewood: I covered the uphill distance of 70 Km at 42 km per hour. The return journey from Pinewood to Oakland was downhill, and I managed to drive at 56 km per hour. What was my average speed for the entire journey?

Brain teaser

Average speed = Total distance / Total time

Total distance = 2 × 70km.

Time for uphill journey (from Oakland to Pinewood) = 70 / 42 hours.

Time for downhill journey (from Pinewood to Oakland) = 70 / 56 hours.

Total time = (70 / 42) + (70 / 56)

Average speed = Total distance / Total time = 48km per hour.

The common mistake made in solving this problem is to assume the average speed to be the arithmetic mean, i.e., (42 + 56)/ 2 = 49 km per hour.