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2705008
Materials
Descrição
Unit1: materials for OCR B incomplete
Sem etiquetas
physics
alevel
materials
physics
a-level
Mapa Mental por
rb.russell1
, atualizado more than 1 year ago
Mais
Menos
Criado por
rb.russell1
quase 9 anos atrás
18
1
0
Resumo de Recurso
Materials
Hooke's Law
tensile force
proportional
extension
if proportional limit not exceeded
F∝x
spring constant
gradient
units: N/m
steep
stiffer
shallow
stretchier
Young'd Modulus
Stress
F/A
tensile force
cross sectional area
units:N/m^2
Strain
x/L
extension
original length
no units
measure of elasticity
high
stiff
low
stretchy
Graph
up gradient
more stiff
brittle materials
no plastic deformation
breaks suddenly
for ductile materials
elastic region
obeys hooke's law up until
proportional limit
elastic limit
no return to original shape
yield point
tensile strength
large amount of plastic deformation
with constant/ reduced load
platic region
necking
break point
permanent deformation
Properties
strength
stress @ which material fails
ductile
premanent stretch
brittle
fracturing
ductile
easily
drawn into wire
tough
opposite
brittle
alot of energy
create new surface area
hard
resistant
scratching/cutting/abrasions
stiff
resistant
bending/stretching
malleable
easily shaped
Inside Materials
bonding
polymer
covalent bonds
strong
rotate
flexible
cross-links
if stong
rigid plastic
covalent
shared electrons
strong
directional
brittle
rigid
ionic
strong
directional
no slipping
brittle
rigid
metallic
free electrons
non-directional
allows rows to slip
ductile
tough
structures
polycrystalline
many grains
random orientations
crystals
uniform rows of atoms
Anexos de mídia
ef3ee716-5fc8-4e75-9580-f0cd0ef2ee1c (image/png)
2726c32d-44f4-464d-8f7f-904984a4ea13 (image/png)
ceca3bfe-0fa9-4826-8eeb-410441d33a81.gif (image/gif)
d89b80b3-0f18-4bc6-9d48-342714e319ec.gif (image/gif)
1d4b54ab-2ad1-4973-84d2-999e001b33fc (image/png)
6abc08fa-c8db-4d58-a5c0-c478e17ff72c.gif (image/gif)
903db44c-1223-45c3-9aec-95c2ac399881.gif (image/gif)
41f32957-f330-4588-9b62-2167112e9085 (image/jpg)
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