Materials and systems section 2 Flashcards
What is strength?
The ability to withstand forces without breaking.
What is Hardness?
The ability to withstand scratching, abrasion or denting.
What is toughness?
Hard to break or snap.
What is elasticity?
They can strech and bend back to its original shape.
What is malleability?
Can be bent or shaped.
What is ductility?
Can be drawn into a wire?
What does electrical conductivity mean?
The ability to let electricity run through them easily.
What does thermal conductivity mean?
The ability to allow heat to pass through them easily.
What are some examples of thermal insulators?
.plastic and wood
What does fusibility mean?
. low melting point, can melt before other metals have melted-holding them together
Give one example of a material with low fusability?
solder
What is the density?
The mass per unit volume.
What is absorbency?
How well a material can soak up water and light
Give an example of a non absorbent fibre?
Synthetic fibres.
What is an alloy?
A mixture of 2 or more elements
What is steel made out off?
Iron and carbon.
What are the 5 types of paper you can get?
.cartridge paper
.layout paper
.tracing paper
.grid paper
.bleed proof paper
What is cartridge paper used for?
.high quality
.textures surfaces
.sketching
What is layout paper used for?
.thin
.translucent
.general design work
What is tracing paper used for?
. semi-transparent
. copy images
What is grid paper used for?
.square- orthographic and scale
.isometric- isometric drawings
What is bleed-proof paper used for?
.when drawing with felt tips and marker pens, so it doesn’t bleed.
Why is boards used for packing?
.low cost and high strength to weight ratio.
