Paper 1 Flashcards
Why use PMC for a pendant
-Attractive and aesthetic
-hard and durable when fired
-less expensive than other metals like gold
low carbon steel use as a shopping basket
-lightweight
-tough
-stiff material
-malleable
chrome plated finish is suitable for shopping basket
- corrosion resistance
- hard durable finish
- can be cleaned
- even coating
how rapid prototyping impacted traditional manufacturing
-no investment into materials
-removed need for high skilled manufacturers
-don’t need a large space to manufacture or machinery
-can easily compare different materials
-much quicker to get to final product
area of a trapezium
(top+bottom)
(—————) height
( 2. )
question 6 dimensions
sin(60) = 700/x
x=808
y^2 +720^2=808
=367.33
same with tan(60)
404.14-367.33
from 36.5 to 37
why is galvanizing suitable for scaffolding
-aesthetics are not important
-corrosion protection
-prevent ware
-not much maintenance
stimulus that causes property shifts
light temp pressure
uses for these materials (cellulose acetate, fluted polypropylene, styrofoam)
cellulose acetate - packaging, photographic film
fluted polypropylene - signs
styrofoam - insulation panels
why is styrofoam used in modeling
easily shaped, can be made quickly, can be shaped with a hot wire don’t need lots of machinery
why is high density modeling foam used
can be sprayed and finished, dense so more realistic weight to finished product, can be shaped with hand tools
why is die casting appropriate for this model
creates a high quality surface finish, reusable moulds for die casting, can achieve intricate details
purpose of fillers
bulk up a product so less raw polymer is needed reduce costs
purpose of plasticisers
makes a plastic less brittle so can be folded and stretched
why outdoor decking needs to be treated
-protect from weathering making it more durable
-protection against fungal and insects
-provides long lasting protection so less maintenance is needed
