Mechanical Behaviour of Engineering Materials - Metals, Ceramics, Polymers and Composites 2010 Part 2 doc
Mechanical Behaviour of Engineering Materials - Metals, Ceramics, Polymers and Composites 2010 Part 2 doc
... GPa GPa
metals and semi-metals
Al 70 64 76 1 .23 108 61 29
Au 78 43 117 1.89 186 157 42
Cu 121 67 1 92 3 .22 168 121 75
α-Fe 20 9 129 27 6 2. 13 23 3 124 117
Ni 20 7 137 305 2. 50 24 7 147 125
Si − 130 188 ... material:
C
11
=
S
11
+ S
12
(S
11
− S
12
)(S
11
+ 2S
12
)
, (2. 38a)
C
12
= −
S
12
(S
11
− S
12
)(S
11
+ 2S
12
)
, (2. 38b)
C
44
=
1
S
44
(2. 38c)
and
S...
Mechanical Behaviour of Engineering Materials - Metals, Ceramics, Polymers and Composites 2010 Part 4 docx
... near-field approximation can be calculated for the
stress field [75, 147]:
˜σ
11
(r, ϕ) =
K
I
√
2 r
cos
ϕ
2
1 −sin
ϕ
2
sin
3ϕ
2
,
˜σ
22
(r, ϕ) =
K
I
√
2 r
cos
ϕ
2
1 + sin
ϕ
2
sin
3ϕ
2
,
˜τ
12
(r, ... = 1
Y = 1. 121 5
Y =
r
2b
πa
tan
πa
2b
Y =
1 − 0. 025 (
a
/b)
2
+ 0.06(
a
/b)
4
p
cos(π
a
/2b)
(plate-shaped crack) Y =
2
π
dence of Y .
10
This is an important diffe...
Mechanical Behaviour of Engineering Materials - Metals, Ceramics, Polymers and Composites 2010 Part 5 doc
... ν)
·
x
2
(3x
2
1
+ x
2
2
)
(x
2
1
+ x
2
2
)
2
,
σ
22
=
−
Gb
2 (1 − ν)
·
x
2
(x
2
1
− x
2
2
)
(x
2
1
+ x
2
2
)
2
, (6.1)
τ
12
=
−
Gb
2 (1 − ν)
·
x
1
(3x
2
1
− x
2
2
)
(x
2
1
+ x
2
2
)
2
.
6 .2 Dislocations ... Ti
Burgers vector out of basal plane
{0110} 21 13
3 2 6 Zn
{0111} 21 13
6 2 12 Zr
{1 121 } 21 13
6 2 12 Zn, Zr
{1 122 } 21 13
6 2...
Mechanical Behaviour of Engineering Materials - Metals, Ceramics, Polymers and Composites 2010 Part 13 docx
... strengthening 20 2
– hardening (steel) 22 2
– polymer 26 3, 27 5, 28 4, 29 0 29 2
– solid solution 20 6
– steel 22 2
– work hardening 199
duromer 26 , 28 , 25 7, 29 9, 346, 347, 419
– elasticity 27 1, 27 3, 27 5
– glass ... 407, 424
– carbon 407, 424
– covalent 16–17, 23 , 61, 25 7, 27 0
– dipole 19, 20 , 24 , 25 7, 25 9, 27 0, 28 6
– dispersion see bond – van der
Wa...
Mechanical Behaviour of Engineering Materials - Metals, Ceramics, Polymers and Composites 2010 Part 6 ppt
... two elements
(2 )
2
=
(2a)
2
N · 2r/2a
=
1
f
V
(2a)
3
4πr
3
/3
2r(2a)
3
=
2 r
2
/3
f
V
≈
2r
2
f
V
. (6 .27 )
Thus, the mean spacing 2 of the particles is
2 ≈
2
f
V
r . (6 .28 )
The particles act ... mechanisms 21 1
Fig. 6.43. Calculation of the average spacing of randomly distributed particles
within one arbitrary plane. The presented example incorporates N = 100 partic...
Mechanical Behaviour of Engineering Materials - Metals, Ceramics, Polymers and Composites 2010 Part 7 pptx
... 22 0 MPa, 2. 2% of the com-
ponents will fail the test. For the remainder, the new probability of failure
is
G
f
(σ) = 1 − exp
−
σ
29 4 MPa
13.1
+ 0. 022
.
26 8 8 Mechanical behaviour of polymers
that ... lg
`
B
∗
/(MPa
n
h)
´
Al
2
O
3
water 20 52. 2 . . . 67.6 121 .1 . . . 1 62. 7
Al
2
O
3
conc. saline solution 70 20 45.5
Si
3
N
4
+ 5.5% Y
2
O
3
1 100 37 106....
Mechanical Behaviour of Engineering Materials - Metals, Ceramics, Polymers and Composites 2010 Part 8 pot
... Araneus diadematus and
8.4 Plastic behaviour 27 5
Table 8.1. Cross-linking density and Young’s modulus of different types of polymers
(cf. section 1.4 .2)
type of material cross-linking density E/GPa
thermoplastics ... chain molecules is larger and enables
9
Mechanical behaviour of fibre reinforced
composites
In composites, different materials are combined to exploit...
Mechanical Behaviour of Engineering Materials - Metals, Ceramics, Polymers and Composites 2010 Part 9 pot
... cylinder block,
320 9 Mechanical behaviour of fibre reinforced composites
Table 9 .2. Increase of Young’s modulus and tensile strength of a duromer matrix
(p olyester resin) by addition of glass fibres ... stage,
316 9 Mechanical behaviour of fibre reinforced composites
Table 9.1. Density and mechanical parameters (Young’s modulus, tensile strength,
fracture strain)...
Mechanical Behaviour of Engineering Materials - Metals, Ceramics, Polymers and Composites 2010 Part 10 pptx
... glass
20 % glass
40 % glass
40 % C
Fig. 10 .25 . Comparison of the S-N curves of unreinforced as well as glass- and
carb on-reinforced polysul fone (simplified plot after [29 ])
S-N curves of fibre composites
According ... copolymerisate
pa
Fig. 10 .24 . S-N curves for fully reversed bending of several polymers at a temper-
ature of 20 ℃ and a loading frequency of 10 Hz (p...
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