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 50...

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... 411 411 411 1.00 50 1 198 151 ceramics diamond − 1 050 1200 1.20 1076 1 25 576 MgO 310 247 343 1 .54 291 90 155 NaCl 37 44 32 0.72 49 13 13 TiC − 476 429 0.88 51 2 110 117 hexagonal materials material ... several engineering materials is given. The elastic stiffness of ceramics slightly exceeds that of metals, but is of the same order of magnitude. Young’s modulus of mos...

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... crack-growth resistance or crack-extension resis- tance K IR . 12 The crack-growth resistance initially increases in materials form- ing a process zone, a behaviour frequently denoted R curve behaviour. ... not to depart too far out of the region of smallest cross section. On the one hand, this is due to the smaller stress level in the thicker parts of the specimen. On the other ha...

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... http://www.sglcarbon.com/sgl_t/fibers/sigra_c.html. 1 35. K. Shiozawa and L. Lu: Very high-cycle fatigue behaviour of shot-peened high- carbon-chromium bearing steel. Fatigue and fracture of engineering materials and structures, 25( 8):813–833, ... fatigue 350 , 352 – 357 , 382, 420, 447 – subcritical crack propagation 150 – 152 , 234–2 35, 417, 440 crack-growth resistance 146...

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... 99 .5 0 20 . . . 55 35 30 90 4 50 130 3 AlMg 3 0 80 17 20 190 4 65 250 2 the increase in strength and the decrease in ductility for different states of deformation of pure aluminium and an aluminium ... 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 depend...

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... consider the probability of survival P s instead of the probability of failure, defined as 246 7 Mechanical behaviour of ceramics 5 −4 −3 −2 −1 0 1 2 3 5. 2 5. 3 5. 4 5. 5 5. 6 5. 7 5. 8 5. 9 ln(σ/MPa) ln ln 1 1−P f 200 ... stress is only 75 MPa. 8.2 Time-dep endent deformation of polymers 2 65 (a) Kelvin model (b) Four-parameter model Fig. 8.7. Mechanical models...

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... Araneus diadematus and 8.4 Plastic behaviour 2 75 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 f...

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... in phase or out of phase. 9.4 Examples of composites 317 3 000 3 50 0 4 000 4 50 0 5 000 5 500 6 000 6 50 0 200 400 600 800 E/GPa R m MPa pan Pitch Fig. 9.12. Mechanical properties of technically ... application of ceramic matrix composites are cutting tools made of SiC-whisker reinforced aluminium oxide for cutting of hard-to-machine materials, especially nickel- ba...

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... 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 to section 10 .5, the ... 933 450 0.48 magnesium alloys 923 450 0.49 ferritic steels 1 811 8 75 0.48 titanium alloys 1 943 8 75 0. 45 nickel-base sup e ralloys 1 728 1 300 0. 75 Al 2 O 3 2 323 1 200 0 .52...

Ngày tải lên: 11/08/2014, 15:20