Composite Chap 11

Question 1

Anisotropic

Answer 1

Strength in the direction of the grain

Question 2

Isotropic

Answer 2

Same strength in any direction

Question 3

FRP

Answer 3

Fibre reinforced plastics

Question 4

Advanced composite materials (ACM)

Answer 4

Boron
Carbon fibre
Aramid
High performance polyethylene

Question 5

Dry fibre cloth patterns

Answer 5

Unidirectional
Square
Twill
Satin

Question 6

Pre preg

Answer 6

Irregular shapes prior to its cure

Good strength and uniform after cure

Question 7

Wet lay up

Answer 7

Room temp storage - RESIN can be mixed immediately

Low strength at high temperatures

Question 8

Fibre orientation

Answer 8

Each layer they change the direction because it increase the strength and stiffness

Question 9

Advantages of composite materials

Answer 9

High strength
Lightweight
Good stiffness
Fatigue resistance
Increased design flexibility

Question 10

Disadvantages of cm

Answer 10

Low lvls of impact energy
Dropped tools can lead to damage

Question 11

Where should composite materials be stored

Answer 11

normal packaging
Special containers
Racking when not fitted

Question 12

Sources of damage to composite material

Answer 12

Collision
Weather
Sand
Wind
Maintenance
Incorrect handling
Overheating
Hot air leaks
Lightning strikes

Question 13

What do you do if you get resin in your eyes ?

Answer 13

Rinse for 15 mins
SDS
Medical aid

Question 14

Where can accidental spills hurt:enter the body

Answer 14

Eyes
Skin
Inhalation
Ingestion

Question 15

Runaway exothermic reaction

Answer 15

Do not approach
Do not breathe
Run away immediately
Do not return until reaction is complete
Workspace is ventilated

Question 16

How to dispose of dangerous substances

Answer 16

Packaged and placed in a landfill (authorised)