New & Smart Materials (Junior Cert Engineering): Flashcards
📚Flashcards
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15 cards from this deck
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Practise the cards
15 cards from this deck
What are new materials?
What are new materials?
Substances with superior properties vs traditional materials
Kevlar tensile strength vs steel (weight for weight)
Kevlar tensile strength vs steel (weight for weight)
5 times greater than steel
Three uses of Kevlar
Three uses of Kevlar
Bulletproof vests, racing car parts, fire-fighting wear
What is carbon fibre made from?
What is carbon fibre made from?
Carbon fibres combined with epoxy resin
Key properties of carbon fibre
Key properties of carbon fibre
Very strong and quite light
What type of material is polymorph?
What type of material is polymorph?
Tough, low melting-point thermoplastic
Polymorph melting point
Polymorph melting point
What are smart materials?
What are smart materials?
Materials that react and respond to external conditions
Conditions smart materials respond to
Conditions smart materials respond to
Temperature, light, pressure, electric current
Key property of shape-memory alloys
Key property of shape-memory alloys
Return to original shape when heated
What is Nitinol made from?
What is Nitinol made from?
Nickel and titanium alloy
Shape-memory alloy use in dental work
Shape-memory alloy use in dental work
Wire braces
Property of thermochromic materials
Property of thermochromic materials
Change colour as temperature changes
Property of photochromic materials
Property of photochromic materials
Change colour in response to light levels
Photochromic material use in eyewear
Photochromic material use in eyewear
Reactive lenses that darken as light increases