Mechanical Behaviour of Engineering Materials - Metals, Ceramics, Polymers and Composites 2010 Part 10 pptx
Mechanical Behaviour of Engineering Materials - Metals, Ceramics, Polymers and Composites 2010 Part 10 pptx
... bending of several polymers at a temper-
ature of 20℃ and a loading frequency of 10 Hz (polyamide: 15 Hz, after [41])
50
200
10
100
10
0
10
1
10
2
10
3
10
4
10
5
10
6
10
7
N
f
σ
A
MPa
unreinforced
10 ... R
m
< 1 100 MPa
≈ 620 MPa for R
m
≥ 1 100 MPa
200
300
400
500
600
700
10
0
10
1
10
2
10
3
10
4
10
5
10
6
10
7
10
8
10
9
N
f
σ
A
MPa
20...
Mechanical Behaviour of Engineering Materials - Metals, Ceramics, Polymers and Composites 2010 Part 7 pptx
... expansion of the two materials,
the matrix is stressed compressively near the particles, impeding crack propa-
262 8 Mechanical behaviour of polymers
T
degree of polymerisation
10
7
10
6
10
5
10
4
10
3
10
2
10
1
T
m
T
g
viscous ... the melting of
266 8 Mechanical behaviour of polymers
0 1 2 3 4 5
"/%
¾/MPa
50
0
10
20
30
40
25
0
5
10
15
20
12
0
2...
Mechanical Behaviour of Engineering Materials - Metals, Ceramics, Polymers and Composites 2010 Part 11 pptx
... creep
Nabarro-
Herring
creep
(a) Aluminium
Coble creep
T/T
m
T/°C
10
–5
10
–4
10
–3
10
–6
10
–7
10
–8
10
–2
10
–1
0.0 0.2 0.4 0.6 0.8 1.0
200 0100 00 3000
¾/G
10
3
10
2
10
1
10
0
10
–1
10
–2
10
–3
¾/MPa
theoretic ... service stress
398 11 Creep
T/T
m
T/°C
10
–5
10
–4
10
–3
10
–6
10
–7
10
–8
10
–2
10
–1
0.0 0.2 0.4 0.6 0.8 1.0
4002000–200 600
¾/G...
Mechanical Behaviour of Engineering Materials - Metals, Ceramics, Polymers and Composites 2010 Part 2 doc
... have a cross-linking density, relative to dia-
mond, of 10
−4
to 10
−3
, whereas the cross-linking density of duromers is much
higher, with values of 10
−2
to 10
−1
.
Elastomers and duromers ... 41
0
50
100
150
200
0 20 40 60 80 100
% NiCu
E
GPa
Fig. 2.7. Dependence of Young’s modulus on the amount of alloyed nickel in cop-
p er [33]
In table 2.1, a survey of the You...
Mechanical Behaviour of Engineering Materials - Metals, Ceramics, Polymers and Composites 2010 Part 4 docx
... 4.2. The shape and size of the
146 5 Fracture mechanics
0.01
0.1
1
10
100
100 0
0.1 1 10 100 100 0 100 00
polymer
foams
ice
polymers
metals
porous ceramics
ingineering
ceramics
composites
crack ... MP
p
m
¾
limit
/ MPa
10
§0
10
¡1
10
+1
10
+2
10
¡4
10
¡3
10
¡2
a
c
=
/ mm
K
Ic
2
¼¾
limit
2
Fig. 5.11. Toughness-strength diagram after Ashby [7]. The failure...
Mechanical Behaviour of Engineering Materials - Metals, Ceramics, Polymers and Composites 2010 Part 5 doc
... nm
σ
22
/ MPa
100
−50
0
50
100
100
−50
0
50
100
100
−50
0
50
100
τ
12
/ MPa
x
1
/ nm
x
2
/ nm
τ
12
/ MPa
100
−50
0
50
100
100
−50
0
50
100
100
−50
0
50
100
σ
m
... 171
100
−50
0
50
100
100
−50
0
50
100
100
−50
0
50
100
σ
11
/ MPa
x
1
/ nm
x
2
/ nm
σ
11
/ MPa
100
−50
0
50
100
100
−50
0
50
100
100...
Mechanical Behaviour of Engineering Materials - Metals, Ceramics, Polymers and Composites 2010 Part 6 ppt
... elastically, and the stiffness increases. In the context of
fibre- and plate-shaped particles this will be discussed further in chapter 9.
The amount of load transfer depends strongly on the shape of the particles
and ... strength and the decrease in ductility for different states of
deformation of pure aluminium and an aluminium alloy.
One advantage of work hardening is th...
Mechanical Behaviour of Engineering Materials - Metals, Ceramics, Polymers and Composites 2010 Part 8 pot
... small interfacial
270 8 Mechanical b ehaviour of polymers
0.00
0.05
0 .10
0.15
0.20
0.25
10
−6
10
−5
10
−4
10
−3
10
−2
10
−1
10
0
·
ε/s
−1
σ/T
MPa/K
21.5 °C
40 °C
60 °C
80 °C
100 °C 120 °C 140 °C
Fig. ... chain molecules is larger and enables
9
Mechanical behaviour of fibre reinforced
composites
In composites, different materials are combined to exploit favour...
Mechanical Behaviour of Engineering Materials - Metals, Ceramics, Polymers and Composites 2010 Part 9 pot
... application of
ceramic matrix composites are cutting tools made of SiC-whisker reinforced
aluminium oxide for cutting of hard-to-machine materials, especially nickel-
base superalloys and hardened ... enamel.
314 9 Mechanical behaviour of fibre reinforced composites
¾
¾
¾
¾
Fig. 9.11. Deformation of a fibre composite under compressive stress. The fibres
can b end in an in-ph...
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