Smart & New Materials

Question 1

3 examples of smart materials

Answer 1

Shape memory alloys
Thermochromic pigments
Piezoelectric devices

Question 2

Examples of combined materials

Answer 2

Alloys

Fabrics (polyester cotton blends)

Question 3

Examples of composite materials

Answer 3

MDF

Steel reinforced concrete

Question 4

Why is combining used in materials

Answer 4

Numerous metals make a lightweight strong material

Question 5

Why is compositing materials used

Answer 5

Provides strength and reinforces materials

Question 6

3 examples of composite materials

Answer 6

Polymer Matrix Composites (PMCs)
Metal Matrix Composites (MMCs)
Ceramic Matrix Composites

Question 7

3 examples of modern materials

Answer 7

Liquid crystal displays
Carbon fibre / Kevlar
Engineering timbers

Question 8

What is a smart material (2)

Answer 8

Materials that respond to external stimuli (e.g. Stress, temperature, electricity)
Change their properties

Question 9

What are modern materials (2)

Answer 9

Made using new/modern processes

Improve on existing materials

Question 10

Example of a shape memory alloy

Answer 10

Nitinol (Nickel and Titanium)

Question 11

Piezoelectric materials (2)

Answer 11

React to an electrical charge

E.g. Stamp to light up shoes

Question 12

Thermochromic pigments (3)

Answer 12

Change colour in response to changes in heat
Cookware, kettles, baby food containers
Prevents accidents and injury