Other Flashcards
Smart materials examples
Shape memory alloy
Photochromic pigment
Thermochromic pigment
Hydrochromic pigment
Shape memory alloy
Remembers original shape when heated
stimulus: electricity/heat
bone fixing, glasses frame, braces
Thermochromic pigment
changes colour from stimulus heat
temperature indicators, thermometer, plugs, baby bottle
Photochromic pigment
changes colour from stimulus of light
welding goggles, sunglasses, eye protection glasses
Hydrochromic pigment
stimulus: water
water tester for plant pot, child’s play mat, umbrella
New materials examples
Graphene Metal foams Coated metals Titanium Nanomaterials Liquid crystal displays LCD
Graphene
High strength to weight ratio, high thermal and electrical conductivity
strengthened lightweight tennis rackets
Metal foams
Tough, hard, strength to weight ratio
lightweight car parts, bone impacts
Coated metals
electroplating, galvanising, anodising
protective/decorative
e.g chrome on car parts, zinc on iron bridges, gold on cheap metal
Titanium
Corrosion resistant, strength to weight ratio
medical implants, vehicles
Nanomaterials
Tiny particles of material used to enchance properties - e. silver (antibacterial properties) nanoparticles on clothing
Liquid crystal displays (L.C.D)
Televisions, computer screens
Composite materials examples
Carbon reinforced polymer
Glass reinforced polymer
Timber based composites
Concrete
examples of new and emerging technologies
VR AI Robotics Autonomous cars and vehicles 3D printing 5G Drones Specific materials
Carbon reinforced polymer
Sports car/ performance bike parts
Glass reinforced polymer
Kayaks, surf boards
Timber based compositives
MDF, Hardboard, Chipboard, plywood
Machinability, large stock sizes
Concrete
Construction, garden ornaments
durable, tough
Technical textiles examples
Kelvar
Nomex
Conductive thread
Kelvar
Bullet proof, motorcycle jackets
Nomex
Firefighter, racing car driver, AP panel
Conductive thread
Smart clothing
Why accuracy is important
Small deviation can result in product being not fit for purpose and would need to be remade > extra cost>extra time>deadlines not met
Jigs
Custom made tools
Designed to achieve accuracy, repeatability and interchangeability during product manufacture
Ensure parts of product are made exactly the same, without the need for marking out
e.g holes drilled in exactly and place on different pieces of wood, printed circuit board jigs used to test for faults in electronic circuit
Templates
Used to draw shape onto material which can be cut around
Useful when large number of complex identical shapes have to be cut
Increased use in CNC equipment reduced need for jigs and templates but still importany
Patterns
Type of template
Used in textile industry
Trace parts of a garment onto fabric before it’s cut
Usually made from paper but can be made from studied material e.g catdboard if going to be used repeatedly
Clothing manufacturers usually employ specialist pattern makers as it is a highly skilled job
