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Mechanical Engineering?. Jeff Rhoads and Terry Ballinger. What is. MST @ MSU 2006. Outline. What is Engineering? Intro to Engineering Movie What is Mechanical Engineering? Sample ME Topics Alternative Energy Sources MEMS Lesson Overview. What is Engineering?. What is Engineering?.

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Mechanical engineering l.jpg

Mechanical Engineering?

Jeff Rhoads and Terry Ballinger

What is

MST @ 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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What is

Mechanical Engineering?

Mechanical Energy

Non-Mechanical Energy

convert


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What is

Mechanical Engineering?

Mechanical Energy

Non-Mechanical Energy

convert

  • Electrical

  • Chemical

  • Thermal

  • Nuclear


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What is

Mechanical Engineering?

Mechanical Energy

Non-Mechanical Energy

convert

  • Electrical

  • Chemical

  • Thermal

  • Nuclear

  • Potential

  • Kinetic


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What is

Mechanical Engineering?

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 ME’s Study?

  • Mechanics: machines, structures, …

  • Fluids: aerodynamics, pumps/fans, …

  • Thermal Sciences: heating/cooling, energy, …

  • Controls: interface electronics, …

  • Manufacturing: matl’s handling/processing, …

  • More…


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Modern Mechanical Engineering


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THE FUTURE:ALTERNATIVE 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 can’t!


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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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MEMSMicro-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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MEMSMicro-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?

>1x1015 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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[email protected] ME

Lesson Overview

What is Mechanical Engineering?

Design: A Creative Problem-Solving Process (Straw Structure)

Dynamics: Gravity is Holding us Down! (Popsicle Stick Slingshot)

Why Things Float and Fly: Buoyancy and Aerodynamics (Airplanes)

Out of Control: The Need for Control System (Popsicle Stick Slingshot)

Manufacturing Madness (Assembly Line)

Energy and Work: Sources and Conversion (?)

Propulsion: How Fast Can You Go? (CO2 Propelled Boat)

Electromechanical Systems (Electric Motor)

Mechanical Vibrations: What’s Shaking?


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Lesson 2 Activity

Straw Structure

Objective

Create a structure that will hold a bottle of water as high as possible.

DESIGN


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Lesson 3-5 Activity

Popsicle Stick Slingshot

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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Lesson 4 Activity

Airplanes!

BOUYANCY & AERODYNAMICS

Objective

Design a set of paper airplanes which will fly the furthest/stay aloft the longest


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Lesson 6 Activity

Assembly Line

MANUFACTURING

Objective

Create an assembly line that will produce eight bean-filled fish as quickly as possible.


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Lesson 6 Activity

Assembly Line

MANUFACTURING

Objective

Create an assembly line that will produce eight bean-filled fish as quickly as possible.


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Lesson 7 Activity

Energy and Work

ENERGY & WORK

Objective

TBD


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Lesson 8 Activity

CO2 Propelled Boat

PROPULSION

Objective

Create a CO2 propelled boat that travels the greatest distance in the minimum amount of time.


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Lesson 8 Activity

CO2 Propelled Boat

PROPULSION

Objective

Create a CO2 propelled boat that travels the greatest distance in the minimum amount of time.


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Lesson 9 Activity

Electric Motor

Electromechanical Systems

Objective

Create a CO2 propelled boat that travels the greatest distance in the minimum amount of time.


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