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Smart Materials 2
Transcript of Smart Materials 2
“Materiales that displays smart behaviour”
Smart behaviour occurs when a material can sense some stimulus from its environment and react to it in a useful, reliable, reproducible and usually reversible manner.
A really Smart material will use its reaction to the external stimulus to initiate or actuate an active response. Clasification of smart materials Piezoelectric: Electric charge or a variation in voltage.
Electrostrictive: Electric charge, but proportional to the square.
Magnetostrictive: Magnetic field.
Shape Memory Alloys: By thermal field shapes change.
Optical Fibres. Measure strain, temperature, electrical/magnetic fields and pressure. Technological Creativity
Bonnie López Smart Materials PuddleJumper Puddlejumper, is a raincoat covered in hand-silkscreened electroluminescent lamps and conductive water sensors. As drops hit the sensors, corresponding flush-mounted panels illuminate — flickering and creating an animated pattern of light — playfully mirroring the rhythm of the rain across the surface of the clothing. Smart Glass Smart glass or smart windows in its application to windows or skylights refers to electrically switchable glass or glazing which changes light transmission properties when voltage is applied.
Certain types of smart glass can allow users to control the amount of light and heat passing through, just with the press of a button, it changes from transparent to translucent, partially blocking light while maintaining a clear view of what lies behind the window. References http://www.journal.forces.gc.ca/vo1/no3/doc/25-32-eng.pdf