5.2 Flashcards
1
Q
what factors consdiered when choosing timber
A
aetshteics
physical proeprites
sutiability for location
ease of machine
cost
avalability
constency in quality
waste?
2
Q
timber aestehtcis
A
grain
pattern
colour
finsih
touch]
3
Q
what are soft woods
A
timber from broad leaf trees
slow growing
deciduous trees
4
Q
what are soft woods
A
timber from confieruosu trees
fast growing
5
Q
examples of hard woods
A
oak
teak
beacch
6
Q
eg of softwood
A
pine
spruce
doglas fir
7
Q
preoprties of oak
A
hard
tough
attarctive grain
weatjer resitance
8
Q
what does oak contain that can cdammage steel fixing or screws and shit
A
tannic acid
9
Q
uses of oak
A
furntiture
flooirng
cladding
inetrior exterior joinery
10
Q
proeprties and characteristics of teak
A
hard
tough
streight grain
natural oils
10
Q
what do teaks natrual oils resit
A
moisture
acids
alkalis
10
Q
uses of teak
A
aoutdoor furntiture
benches
deck boats
11
Q
proeprties and characteristics of beech
A
hard
tough
close grain
avalabile in steamed and unsteamed
11
Q
meanign fo stemaed and unsteamed beech
A
steamed = white colour
unsteamed = pink tinge
12
Q
uses of beech
A
chairs
chopping boards
tools, eg mallets
kitchen ware
turned bowls
13
Q
proeprties and characteristics of pine
A
straigh grain
knotty
can contain resinous knots
14
Q
what is pine also knwon as
A
European red wood
15
Q
uses of pine
A
indoor furntiture
16
Q
proeprties and characteristics of spruce
A
straight grain
restiant to splitting
17
Q
uses of spruce
A
indoor furntiture
18
Q
proeprties and characteristics of douglas fir
A
straight/slight wavy grain
few knows
stable
good corrosion resistance
19
Q
uses of fir
A
veneers
plywood
joinery
construction work
20
Q
types of manfuactured boards
A
laminated baoards
compressed baords
21
Q
what are laminated boards
A
layers glued together in a well organsied structrue with a syntehtci resin that sets rapidly udner heat and pressure
22
what are compressed baords
made from chips strands and particles of timebr glued udner comrpessive forces
23
why is manufactrued baords better than natrual timebrs
available in large sheets
dimensionally stable
constsen proeties
pre finsihed
envriomental ebenfit
24
enviro benefits fo manufactured boards
made from low grade timbers
utilise wastage fromother manfuacture
25
examples of laminated board
ply wood
flexible ply wood
26
hwo si ply wood made
thin layers of wood placed adn glued 90 degrees to eachother and comrpessed
27
proeprties of ply wood
good strength in all directions
no grain weakenss
28
does ply wood have even laeyrs
no always odd
29
what si MDF
compressed wood fibres
30
what sometiems is used as an additional resin for mdf
urea formalhydge
31
proeprties and characteristics of mdf
2 smooth faces
avalible in either standard grade or veneered with layer of timebr
32
uses of ply wood
structural work
desk tops
indoor furtniture
floor baords
33
uses of flexible plywood
laminaetd board
curved panels
34
uses of mdf
model or mould mking
furntiture
35
furntiture that may be made of mdf
book cases
cabinets
desks
36
hwo is block baord made
layers of strips of laminated timebr whcich run perpendicular to the baords surfaces
37
uses of block baord
indoor furntiture
shelvign
tabel tops
38
what is chip board
chisp of timber comrpessed to board form
39
proeprties fo chip baord
weak structure
poor aethtcis
40
why does chip baord haev a weak structure
chipped, non compact struct
41
is chip baord usually veneered
yes
42
uses of chip board
flat pack furntiure
where veneeer used on top
kicthen cupboards or work tops
43
types of metals
ferrous - contain iron
non ferrous - contain no iron
44
eg of non ferrous
aluminium
copper
45
eg of ferrous
mild steel
stainless steel
cast iron
46
proeprties and characteristics of aluminum
light weight
ductile
malleable
corrisve resitant
conductive
47
weldign processes that can be used on aluminium
MIG AND TIG
48
meltign temp of aluminum
660
49
uses of aluminum
drink cans
aricraft bodies
bike frams
sauce pans
cookign utensils
packagign
foil
50
proeprties and characteristics of copper
ductile
malleable
tough
corrision resitsant
condcuive
51
can copper be welded
no btu it can be sodlered adn brazed
52
meltign temp of copper
1083
53
uses of copper
electrical wires
pricnted circuits
wtaer pipes
hotwater tanks
central ehatign pipes
54
proeprties and characteristics of mild steel
ductile
high tensile strenght
tough
malleable
55
is midl steel poor corrsisve reist
yes
56
eltign temp of midl steel
1427
57
uses of midl stee
nut
bolt
washers
screws
car bodies
out panels fo white good
58
proeprties and characteristics of staineless steels
tough
ahrd
corrsive resiatnt
59
meltign temp of SS
1510
60
uses of SS
sinks
kitchen ware
cutler y
61
proeprties and characteristics of cast iron
hard outer skin
brittle core
good udner compression
62
meltign temp fo cast iron
1149
63
uses fo cast iron
disc brakes
machien parts
engine blocks
64
what si a metal alloy
two or more metals or other elements
65
exampels of metal alloys
bronze
brass
tungsten
66
proeprties and characteristics of bronze
tough
corrsion rest
can eb cast
67
compositition fo bronze
90% copper
10% tin
68
meltign temp of bronze
850 - 1000
69
proeprties and characteristics of brass
corrsive reistant
conduive
low meltign point
cast well
70
meling poitn fo brass
930
71
uses of rbass
boat fittings
door furntire
cast valves
taps
ornaments
72
proeprties and characteristics of tungsetn
very tough
very dense
reistant to corrosion
high tensile strenght
73
meltign poitn fo tungsten
3422
74
uses of tugngset
high speed cuttign tools
tips for circular blades
masonary dirll btis
75
what are the types of palstic
thermo polymers
pthermo settign polyemrs
76
what are thermo polyers
polymers set with ehat btu can be reused
77
what are thermo settign polymerns
polymers set with heat adn stay ins oldi staet ocne harded
78
Types of poletehelen
LDPE
HDPE
79
proeprties and characteristics of ldpe
tough
chem ristance
weatehr proof
can eb transluscent
lwo rigigdty
80
safe workign temp of ldpe
65
81
uses of LDPE
squeezy detergent bottles
toys
carrier bags
bin lines
geenral packagign
food wrap film
food trays
82
proeprties and characteristics of HDPE
availabel in transulcuent form
weatehr proof
tough
good chem resiatnce
83
safe workign temp of HDPE
65
84
uses of HDPE
chemical drum
jerry drums
toys
kitchen ware
logn lfie carrier bags
buckest
85
proeprties and characteristics of polypropelene
available in translucent form
godo chem resitant
tough
good fatuige retsaitn
86
what does tough fatigeu restant mean
hinge proeprty
87
safe workign temp of pp
100
88
uses of pp
rope
fodlers
folio cases
cotnainers
medical equp
89
proeprties and characteristics of HIPS
Hard
rigid
avalble in translucent
tough
90
safe workign temp of HIPS
70
91
uses of hips
yoghurt pots
fridge linings
single use cops
oilet setas
control knobs
92
proeprties and characteristics of abs
tough
hard
avalble in opaque
93
safe workign temp fo ABS
80
94
uses fo ABS
phone hadnsets
rigid luggage
food mixers
handles
hoovers
bumpers
remote casigns
95
proeprties and characteristics of PET
hard
transulcuent
good impact reissant
96
safe workign tmep of PET
65
97
uses of PET
water bottles
fizzy drink bottles
milk bbottles
chcolaet bo lienrs
98
types of polyvinyl chloride
palstciised
unpalstsiced
99
proeprties and characteristics of uPVC
rigid
opaque
tough
hard
weatehr reist
chem reist
100
safe workign temp of UPVC
95
101
uses of UPVC
window frames
external doros
gutterign
water srvcie pipes
bank cards
102
proeprties and characteristics of pvc
flxible
tranlsucent
tough
godo wetaher resit
chem reisst
103
safe working temp of pvc
95
104
uses of pvc
hose pipes
cabel isnualtion
medical rgade tubing
inflatble products
seat coevrigns
105
thermo settign polyemrs eg
urea formalhydge
polyester resin
epozy resin
106
proeprties and characteristics of UF
hard
heat reistant
good chemcial isnualtor
britlle
107
safe workign temp of UF
80
108
uses fo UF
adhesives
electrical fittings
109
proeprties and characteristics of polyester resin
rigid
heat resiatnt
chemcial resitant
britttle
110
safe workign temp fo Polyester resin
95
111
uses of polyester resin
casings
ay up process for GRP
car parts
chair setas
112
proeprties and characteristics of epoxy resin
rigid
tough
clear
hard
chem reistant
113
safe workign temp of epoxy resin
tough
hard
chemcial reist
rigid
clear
114
uses of epoxy resin
adhesives
surface coatigns
aerospace applications
115
eg of fibres
cotton
wool
silk
polyester
nylon
116
speak abotu wool
absorbant
strong
poor elastcitiy
tendency to crease
117
speak abotu wool
good insualtor
water repelent
nto very durable
118
speak abotu silk
good tensiel strength
druabel
light
hard to care for
119
speak abotu polyester
versatile
strong
good thermopalstic qualities
120
speak abotu nylon
strong
durable
good elastsicty nad tear reistance
121
exampels of fabrics
woven
non woven
kintted
blended textiels
122
what are woven fabrics
itnerwinign yarns with wafs and wefts
123
what are non woven fabrics
fabrics created from firbes bunches togehter
124
pro of non woven
cheap
125
con of non woven
lack strength
126
speak ab knitted fabrics
interlcokign loops of yarn
good fludiity
elastsictc
stretchy
127
speak abotu blended textiles
created from diff types of fibre to combien best preties of both
128
what are compsoite maetrials
materiasl made fo two or more diff maetrials
129
eg of compsoite maetriasl
grp
cfrp
130
how are both grp adn cfro made
firbes mized with themrosettign polyesetr resin
131
proeprties and characteristics of CFRP
lightweight
corrsive resitatn
tough
hard
good comrpessive strength
lwo thermal expansion
132
uses of cfrp
sports equipment
biek frames
tennis racquets
fishign rods
card bdoies
hepmets
prosethetcis
133
proeprties and characteristics of grp
lightweight
corrsive reistant
tough
hard
low thermal expansion
good comp strength
134
uses of grp
boat hulls
pond lienrs
kayak shells
sport car bodeis adn parts
135
what are mdoern maetriasl
materiasl developed through the invention fo new or improevd processes
136
are mdoern maetrials natrually occurign
NEIN
137
what are etexttiles
condcitve firbes directly into textile to produce clothign etc
138
uses of etextiles
smart colour displaus
heatign elenets
can sue kinetci enegry for heat
fabric key pads
garmenets to track health
139
what are super alloys
alloys with significntly enhacned characteristics such as mechanical strenght
high temp profrmace
corrsiona dn war restiant
140
use of super alloys
turbine baldes
rocket engines
chemical processing
141
what is graphene
worlds thinnest material
strongest material
harder than diamon
extemely light weight
conducitv
transpartet
elastic
142
how is grapheen made
carbon atoms arrange in a hexagonal latice
143
uses of grapehen
ink absed security tags
tennis rackets
skis
helmets
fodlabel phones
144
what are bioplastics
plastics made form plant based sources
145
exmapel fo plant based sources for bioplastics
veg oil
corn starch
146
uses of bioplastics
disposabel items such as pakcagign
cutlery
straws
bags
trays
egg cartons
mobiel phoen cassigns
caper firbe
s
147
what are nano materials
materials made by aletrign individaul atoms
148
what does aletrign idnviduas atoms do
reuslts in greater surface area
imrpoved strength to weight
elatssicty
codncutive
optical perfomance
