Mechanical Engineering?

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Mechanical Engineering?

• What is

Jeff Rhoads and Terry Ballinger
MST _at_ MSU 2006
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Outline

• What is Engineering?
• Intro to Engineering Movie
• What is Mechanical Engineering?
• Sample ME Topics
• Alternative Energy Sources
• MEMS
• Lesson Overview

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What is Engineering?
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What is Engineering?

• The application of science mathematics to
  design, build, and maintain devices and processes
  that are useful to humankind.

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What is Engineering?
Useful Things
Stuff
convert
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What is Engineering?
Useful Things
Stuff
convert

• Matter
• Sources of Energy

• Cars
• Air Conditioners
• Bridges
• Clean Water

useful to humankind
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What is Engineering?
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Mechanical Engineering?
What is
Mechanical Energy
Non-Mechanical Energy
convert
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Mechanical Engineering?
What is
Mechanical Energy
Non-Mechanical Energy
convert

• Electrical
• Chemical
• Thermal
• Nuclear

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Mechanical Engineering?
What is
Mechanical Energy
Non-Mechanical Energy
convert

• Electrical
• Chemical
• Thermal
• Nuclear

• Potential
• Kinetic

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Mechanical Engineering?
What is
Mechanical Energy
Non-Mechanical Energy
convert
Conversion involves the design and manufacture of

• Tools
• Machines
• Engines

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Examples
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Examples
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Examples
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What do MEs Study?

• Mechanics machines, structures,
• Fluids aerodynamics, pumps/fans,
• Thermal Sciences heating/cooling, energy,
• Controls interface electronics,
• Manufacturing matls handling/processing,
• More

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Modern Mechanical Engineering
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THE FUTUREALTERNATIVE ENERGY
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Alternative Energy - Motivation
In the United States

• 2 of the Worlds Oil Reserves

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Alternative Energy - Motivation
In the United States

• 2 of the Worlds Oil Reserves
• 8 of World Oil Production

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Alternative Energy - Motivation
In the United States

• 2 of the Worlds Oil Reserves
• 8 of World Oil Production
• 5 of Worlds Population

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Alternative Energy - Motivation
In the United States

• 2 of the Worlds Oil Reserves
• 8 of World Oil Production
• 5 of Worlds Population
• 31 Total Oil Consumption
• (2/3 imported)

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Why Oil?
Historical sources of energy
Wood ? Coal ? Oil/Gas ? Nuclear
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Why Oil?
Historical sources of energy
Wood ? Coal ? Oil/Gas ? Nuclear
One barrel of oil
12 person-years of manual labor

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Global Oil Production Demand
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Energy Consumption
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What Should We Do?

• Increase nuclear energy output?
• Increase alternative energy output (solar, wind,
  wave, geothermal, )
• Reduce consumption?
• All of the above?
• OR Go back to the caves? We cant!

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Alternative Energy Sources

• Nuclear
• Hydroelectric
• Geothermal
• Wind
• Biomass, Agricultural Sources, and Waste
• Solar
• Hydrogen from Renewables

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Complications.

• Environmental Impact
• Cost
• Safety
• Technology
• Will it make a dent?

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So Why Try.

• Application Specific Energy
• Solar Panels
• Hydroelectric Power
• Hydrogen Powered Cars

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Solar Power
Semiconductor (Silicon)
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Hydrogen from Renewables
DOE/EPA, 2005
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Pushing the Envelope
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MEMS Micro-Electro-Mechanical-Systems

• Small devices that integrate electronics,
  mechanics, and computing
• Existing products sensors for acceleration (air
  bags), pressure (tires), temperature, ear
  implants, etc
• The future biotech applications, sorting of
  stem cells, biohazard sensors, etc

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MEMS Micro-Electro-Mechanical-Systems

• Small devices that integrate electronics,
  mechanics, and computing
• Existing products sensors for acceleration (air
  bags), pressure (tires), temperature, ear
  implants, etc
• The future biotech applications, sorting of
  stem cells, biohazard sensors, etc

This is what I frequently work on!
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How Small is Small?
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How Small is Small?
200 People
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How Small is Small?
650,000 Cans of Soda
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How Small is Small?
30,000,000 2 Pencils
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How Small is Small?
gt1x1015 MEMS Devices (Quadrillions)
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Tire Pressure Sensors
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Cochlear Implants
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Cochlear Implant
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Micromachines
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Micromachines
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What Else Does the Future Hold?

• Nanotechnology very small machines
  (one-billionth of a meter!)
• Biotech Advances
• Space Age Materials
• More just use your imagination!

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Lesson Overview
MST_at_MSU ME

1. What is Mechanical Engineering?
2. Design A Creative Problem-Solving Process (Straw
   Structure)
3. Dynamics Gravity is Holding us Down! (Popsicle
   Stick Slingshot)
4. Why Things Float and Fly Buoyancy and
   Aerodynamics (Airplanes)
5. Out of Control The Need for Control System
   (Popsicle Stick Slingshot)
6. Manufacturing Madness (Assembly Line)
7. Energy and Work Sources and Conversion (?)
8. Propulsion How Fast Can You Go? (CO2 Propelled
   Boat)
9. Electromechanical Systems (Electric Motor)
10. Mechanical Vibrations Whats Shaking?

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Straw Structure
Lesson 2 Activity
Objective Create a structure that will hold a
bottle of water as high as possible.
DESIGN
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Popsicle Stick Slingshot
Lesson 3-5 Activity
Objective Create a ground level launching
slingshot that will propel a plastic ball as far
as possible.
CONTROLS / DYNAMICS
Objective Calibrate the slingshot from Lesson 3
to accurately propel a plastic ball to a target
at an arbitrary distance.
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Airplanes!
Lesson 4 Activity
BOUYANCY AERODYNAMICS
Objective Design a set of paper airplanes which
will fly the furthest/stay aloft the longest
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Assembly Line
Lesson 6 Activity
MANUFACTURING
Objective Create an assembly line that will
produce eight bean-filled fish as quickly as
possible.
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Assembly Line
Lesson 6 Activity
MANUFACTURING
Objective Create an assembly line that will
produce eight bean-filled fish as quickly as
possible.
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Energy and Work
Lesson 7 Activity
ENERGY WORK
Objective TBD
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CO2 Propelled Boat
Lesson 8 Activity
PROPULSION
Objective Create a CO2 propelled boat that
travels the greatest distance in the minimum
amount of time.
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CO2 Propelled Boat
Lesson 8 Activity
PROPULSION
Objective Create a CO2 propelled boat that
travels the greatest distance in the minimum
amount of time.
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Electric Motor
Lesson 9 Activity
Electromechanical Systems
Objective Create a CO2 propelled boat that
travels the greatest distance in the minimum
amount of time.