6.3 Flashcards
What is a composite
Two or more materials that are combined together to form a much stronger structure
What are the two main components of a composite
The matrix
The reinforcing material
Qualities of Nomex
Yellow in colour Made from fibres High thermal stability Radiation resistant Flame resistant
What are the qualities of fibre glass
Small strands of Molotov silica glass are spun and woven together
What are the two types of fibre glass
E glass is highly resistant to electricity
A glass very high tensile strength
What are the qualities of aramid
Light weight Excellent tensile strength Good in high stress and vibration Heat resistant Tough
What can aramid be repaired with
Fibre glass
What are the disadvantages and advantages of KEVLAR
Ad
Man made fibre
High tensile strength and flexibility
Dis
Difficult to cut
Absorbs 8% water
Poor compressive qualities
What is Kevlar good for
Belts
Radial tyres
Bulletproof belts
What are the qualities of carbon fibre
High E module High strength Low density Conductive Expensive
What type of tools can we use with carbon fibre
Air tools only
What are the properties of graphite
Brittle
Strong compressive value
But corrosive when bonded with aluminium
Fabric orientation
Warp
Length
Fabric orientation
Weft : fill
Width
Fabric orientation
Selvedge
Runs parallel to warp tightly wove. Edge
