Introduction

Question 1

What are the 4 classes of materials

Answer 1

Metals, Polymers, ceramics, hybrids

Question 2

What class is wood and asphalt

Answer 2

hybrids

Question 3

Give four recurring properties in ceramics

Answer 3

brittle, high melting point, good insulators and resistant to oxidation

Question 4

What kind of ceramic is concrete

Answer 4

non technical

Question 5

Give a defining property of polymers compared to the other classes

Answer 5

lower density

Question 6

Defining properties of:
elastomers
Thermoplastics
Thermosets

Answer 6

Stretchy
soften in heat, harden by cooling
Harden by heat

Question 7

What are the stages of material selection

Answer 7

translation, screening, ranking

Question 8

What is a constraint in the translation process

Answer 8

Something the component for which the material is being selected for must be able to do

Question 9

What are objectives in the translation process

Answer 9

A property that should be maximised or minimised

Question 10

What is screening

Answer 10

Eliminating materials that are unsuitable

Question 11

What is material index

Answer 11

An expression based on all objectives that can be varied (not constrained) that should be maximised to find the best material