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SMART MATERIAL

WHAT ARE SMART MA materials are materials that are manipulated to respond in a controllable
and reversible way, modifying some of their properties as a result of external stimuli such as certain
mechanical stress or a certain temperature, among others. Because of their responsiveness, smart
materials are also known as responsive materials. These are usually translated as "active" materials
although it would be more accurate to say "reactive" materials.
• WHAT IS SMART MATERIAL ?

 Smart materials, also called intelligent or responsive materials, are


designed materials that have one or more properties that can be significantly
changed in a controlled fashion by external stimuli, such as stress, moisture,
electric or magnetic fields, light, temperature, pH, or chemical compounds.
EXAMPLES & APPLICATIONS
 Synthetic spider web. This material is not only five times stronger than steel, but also has great elasticity. Its
potential uses include: bulletproof clothing, artificial skin for burns or waterproof adhesives.
• In automobile, it used to transform efficiency anf comfort, and safety for people and assets and used to increase the
strenght of the vehicle.Smart material ate now being used in cars safety bags for their proper working.
Smart material are used in engines to increase their efficiency. Smart materials are also used in automobile
airconditioning.
• The piezoelectric and dielectric materials (electro ceramic materials) are used to make aerospace sensors
and transducers such as gyroscopes and accelerometer. Smartsensorsal-actuated rotor technology is being
used in Boeing, which reduces about 80% vibrations, improving flight performance
• Smart concrete (a composite of carbon fibres and concrete) used in smart structures is capable of sensing
minute structural cracks / flaws. Unlike conventional concrete, the smart concrete has higher potential and
enhanced strength.
•   Shape memory materials
• They have the ability to change the shape, even returning to their  electrical impulseoriginal shape, when exposed to
a heat source, among other stimuli.
• Chromoactive materials
• They change colour when subjected to a certain variation in temperature, light, pressure, etc. Nowadays, they are
used in sectors such as optics, among others.
•Shrilk. Its main component is chitin, a carbohydrate found in krill shells. It was created by researchers from Harvard
University and is considered the ideal substitute for plastic — since its decomposition time is only two weeks and it
also works as a stimulant for plant growth —.
•   Magnetorheological material
• They change their properties when exposed to a magnetic field. For example, they are currently used in shock
absorbers to prevent seismic vibrations in bridges or skyscrapers.
  
•XPL. It is a silicone-based polymer that adheres to the dermis like a second skin. Created by scientists at the
Massachusetts Institute of Technology (MIT), it replicates the appearance of young, healthy skin by rejuvenating the look
of the wearer.
PRESENTED BY:
• 2020-AU-33
• 2020-AU-34
• 2020-AU-35
• 2020-AU-36

Prepared by 2020AU33

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