Chapter 1

Question 1

What are the 2 different property types?

Answer 1

> Intrinsic

> Attributive

Question 2

What does intrinsic and attributive mean?

Answer 2

Intrinsic: Natural properties
Attributive: A unnatural property of the material usually caused by humans.

Question 3

What are 3 intrinsic properties?

Answer 3

> Bulk Mechanical properties
Bulk Non-mechanical Properties
Surface properties

Question 4

What are 3 attributive properties?

Answer 4

> Price and availability
Productions properties
Aesthetic properties

Question 5

What is an intrinsic property?

Answer 5

This is a property that is independent of how much of the material there is or external factors

Question 6

What is an attributive property?

Answer 6

This is a property that is external and dependent on external factors. e.g. finishing and manufacturing

Question 7

What is tribology?

Answer 7

The study of materials

Question 8

What is a bulk mechanical properties?

Answer 8

Physical properties that independent on the shape and size of a material.

Question 9

What are all the bulk mechanical properties and the associated definitions?

Answer 9

> Density - Mass per unit volume
Elastic Moduli - How easily a material can stretch
Strength - The ability of a material to withstand a force/pressure
Creep - Deformation slowly overtime due to persistant mechanical stresses
Toughness - The ability to withstand adverse conditions

Question 10

What is a surface property?

Answer 10

Properties that affect the functional aspect of a material

Question 11

What are 4 Surface properties?

Answer 11

> Corrosion
Oxidation
Friction
Wear

Question 12

What is a non-mechanical bulk property?

Answer 12

Properties that do not relate to the physical behavior of the material

Question 13

What are 4 Non-mechanical Bulk properties?

Answer 13

> Thermal
Electrical
Optical
Magnetic

Question 14

What are 5 Economic properties?

Answer 14

> Cost
Supply of the material
Is the material sensitive to the public eye (Is the way that is it sourced problematic or controversial)
Is the material supplied by a sole provider or is there competition (Price fixing, negotiation)
Is the material available locally

Question 15

What are 6 Manufacturing properties?

Answer 15

> How easy is it to manufacture
Time
Cost
Effort (does it require specialist equipment)
How sensitive is the material to the manufacturing properties
Does the manufacturing change the properties of the material

Question 16

What are 4 main material groups?

Answer 16

> Metals and Alloys
Polymers
Ceramics and Glasses
Composites are a combination of the above

Question 17

What are the mechanical properties of solids?

Answer 17

> Definite volume and shape
Resists deformation
Capable of sustaining a stress without changing shape

Question 18

What are the mechanical properties of liquids?

Answer 18

> Definite volume
Cannot resist changes in shape and has no natural (intrinsic) shape
Able to transmit and sustain an applied static sheer stress

Question 19

What are the mechanical properties of gasses?

Answer 19

> Occupy all spaces available to them