![What is an Engineer?
• Engineering is the profession in which
knowledge of the mathematical and
natural sciences gained by study,
experience, and practice is applied with
judgement to develop ways to utilize,
economically, the materials and forces of
nature for the benefit of mankind.
[ABET]](https://image.slidesharecdn.com/introtoengineeringlecturenotes11-250602151700-b653b056/85/Intro-to-Engineering-lecture-11-1-pptx-3-320.jpg)
Intro to Engineering lecture 11 (1).pptx
- 2. Introduction to Mechanical Engineering • What is engineering? • What do mechanical engineers do? • The basic engineering process
- 3. What is an Engineer? • Engineering is the profession in which knowledge of the mathematical and natural sciences gained by study, experience, and practice is applied with judgement to develop ways to utilize, economically, the materials and forces of nature for the benefit of mankind. [ABET]
- 4. What Engineers Do ? • Build a Bridge? • Make a Robot? • Work on a Computer? • Drive a Train? • Repair Car Engines?
- 5. Engineering Job Descriptions • Analytical engineer • Design engineer • Test engineer • Manufacturing engineer • Development engineer • Research engineer • Sales engineer • Engineering manager • Consulting engineer
- 6. Why Be An Engineer? •Money ?? •Fame ?? •Fortune ??
- 7. Why might YOU want to be an Engineer? • You have high goals in life and 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!
- 8. Classical definition: An engineering discipline that encompasses the generation and application of heat and mechanical power and the design, production, and use of machines. A machine is an apparatus using or applying mechanical power and having several parts, each with a definite function and together performing a particular task. Pumps, compressors, internal combustion engines, wind turbines Piping systems and pressure vessels, reactors, heat exchangers Consumer goods and products: everything from coffee grinders to toothbrushes Material handling equipment - conveyers, robots, production assembly lines Vehicles - cars, trucks, heavy equipment, buses, aircraft, ships. What is Mechanical Engineering ? 8
- 9. What is Mechanical Engineering? • Mechanical engineering is the second largest and one of the oldest disciplines; broadest of all engineering disciplines. • Mechanical engineers apply the principles of mechanics and energy to the design of machines and devices: ENERGY and MOTION
- 10. What will you study as an ME student? • Forces, motion, structures: statics, dynamics, kinematics, mechanics of solids and fluids. • Energy: thermodynamics, heat transfer • Materials: materials engineering & processing, manufacturing. • Machines: graphics, design, machine elements, controls. • Economics: engineering economic analysis, cost engineering. • Human and Social Studies: arts, humanities, social sciences, history, government, ethics, law. • Overall foundation: math, physics, chemistry, biology, analysis skills, communication skills, computation skills.
- 11. We have discussed classical mechanical engineering applications but will now look at some new topics In engineering, boundaries between mechanical, electrical, and software engineers are increasingly blurry As a new mechanical engineer you will need some knowledge in other fields Mechanical engineering now has undergraduate courses called Electro- Mechanical Systems or Mechatronics As modern engineering becomes more precise both with measurements and computer simulations, understanding the error associated with solutions has become a focus An undergraduate course of study should include Probability and Statistics The Modern Era and Mechanical Engineering 1 1
- 12. Mech. Eng. Top 10: ASME Survey Automobile: High-power lightweight engines, efficient mass- manufacturing Apollo: Saturn V launch vehicle (7.5 million pound thrust), command and service module, lunar excursion module Power generation: Conversion of stored energy into electricity, manipulation of chemical-, kinetic, potential-, and nuclear- energy, large-scale power production Agriculture mechanization: Powered tractors, mechanized harvesting, high-capacity irrigation pumps, computerized crops management Airplane: Propulsion (jet engines), lightweight materials, electromechanical control systems
- 13. Mech. Eng. Top 10: ASME Survey Integrated circuit mass production: IC manufacturing machines, alignment systems, temperature- and vibration control, motors, bearings Air-conditioning and refrigeration: Compressors, refrigerants, heat exchangers Computer-aided engineering technology: Computer- aided design, analysis, manufacturing, virtual collaboratives Bioengineering: Imaging, prosthetics, minimally invasive surgery, tissue engineering Codes and standards: Interchangeability, interoperability, interconnectivity
- 14. The Engineering Design Process: (Core of Engineering) • Problem Identification: Get with Customer. • 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.
- 16. Design Graphics Sketching 3-D Modeling Analysis Prototyping 2-D Drawing Team Work
- 17. Machine Components: Basic Elements Inclined plane wedge Slider-Crank Cam and Follower Gear, rack, pinion, etc. Chain and sprocket Lever Linkage Wheel/Axle Springs
- 18. Product Design: Designing products ranging from knee replacements to internal combustion engines to self driving cars, aircraft, bicycles, robots, drones and appliances Research and Development: Researching new ideas and solutions that satisfy society’s demands or improving or expanding older ideas and solutions Manufacturing: Designing and building the machines and processes used for mass production of consumer products Systems Management: Managing the operations of a large system, such as a manufacturing facility or a power plant Energy Planning how energy is created, stored and moved in industries that produce and deliver electrical power, such as natural gas, oil and alternative energy Typical Jobs of A Mechanical Engineer 1 8