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...

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... 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...

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... 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...

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... 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...

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... 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...

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... 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....

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... 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...

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... 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)...

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... 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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