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SMART Materials:
Top Trump Cards
For each smart material you must know about…
Properties
Examples of use
Reasons for use
Improvements on traditional materials
SMART Materials:
Shape Memory alloy
Properties:
Bendable, it will return to its original shape if heated above a certain temperature
Examples of use:
Sprinklers in fire alarm systems, spectacle frames, coffee machines.
Reasons for Use:
It’s easily shapen and keeps its shape
Improvements on traditional materials:
Glasses had to be re-bended by hand but now you can use heat
SMART Materials:
Shape Memory polymer
Properties: Will return to its original shape if heated above a certain temperature. A good insulator.
Examples of use:
Window sealing foam, sensors and robots
Reasons for use:
Strong, low cost, can be triggered by temperature and light
Improvements on traditional materials: Can be tailored to a broad range of materials and temperatures.
Links to help:
And Wikipedia of course but keep it simple.
Youtube if you must but DO THE WORK not just waste time gazing at videos!
Good Luck
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SMART Materials:
Electrochromic materials
Properties:
Change colour when electricity is applied
Examples of use:
Smart windows, electrochromic mirrors and electrochromic display devices
Reasons for Use:
Privacy in office windows, automatic tiniting of windows depending on sun
Improvements on traditional materials: Usually you have to choose the colour of a material and it can’t be changed easily
SMART Materials:
Piezoelectric actuators
Properties: When electricity is applied to a Piezo Actuator it changes shape by an small but amount. They can be “stacked”
Examples of use:
Controlling hydraulic valves, adjusting machining tools and some motors
Reasons for Use:
Very small and precise movements, no motors or gears to go wrong.
Improvements on traditional materials: Easy to control pumps and valves. Very small & controlled movement unlike motors
SMART Materials:
Piezoelectric transducers
Properties: When under impact they create a small electrical current. When electricity is applied they move a small amount.
Examples of use:
Guitar hero drum sensors. Touch sensitive surfaces, engine sensors
Reasons for Use: Reliable and sensitive way of creating an electrical signal from movement or vice versa.
Improvements on traditional materials: Small movement needed unlike switches. Simpler than a motor for small movements
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