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Ductility index

Total energy represents the total area under the force/distance curve. Yield energy is the area under the portion from the start of the experiment to the point of maximum force. As a rule of thumb, a ductility index less than 35% represents brittle failure. It is necessary to report both the total energy and ductility index to characterize impact strength in the instrumented impact test. [Pg.210]

Figure 7.13 Effect of compounding method/mixing intensity on ductility index of PP-plastomer blends. Figure 7.13 Effect of compounding method/mixing intensity on ductility index of PP-plastomer blends.
Fig. 6.25 Trend of relative ductility (ductility indexed to the uniaxial monotonic traction value) vs. the triaxiality factor TF (experimental data from [34], theoretical data from [36])... Fig. 6.25 Trend of relative ductility (ductility indexed to the uniaxial monotonic traction value) vs. the triaxiality factor TF (experimental data from [34], theoretical data from [36])...
Physical properties Color, refractive index, ductility, hardness, malleability, melting point, boiling point, density, thermal... [Pg.40]

Just as metals can be ductile or brittle, so can organic materials. The Brittle Fracture Index is a measure of the brittleness of a material. It is a measure of the ability of a compact of material to relieve stress by plastic deformation. The Brittle Fracture Index (BFI) is determined [29,31] by comparing the tensile strength of a compact, stress concentrator) in it, o-T0, using the tensile test we have described. A hole in the center of the compact generally weakens a tablet. If a material is very brittle, theoretical considerations show that the tensile strength of a tablet with a hole in it will be about one-third that of a solid tablet. If, however, the material can relieve stress by plastic deformation, then the strength of the compact with a hole in it will approach that of a compact with no hole. The Brittle Fracture... [Pg.292]

A bright white metal soft and ductile body-centered cubic structure index of refraction 3.03 density 5.96 g/cm melts at 1,910°C vaporizes at 3,407°C electrical resistivity, 18.1 microhm-cm at 0°C and 20.1 microhm-cm at 25°C magnetic susceptibility 1.4x10 cgs units modulus of elasticity 18-19x10 psi shear modulus 6.73xl0 psi Poisson s ratio 0.36 thermal neutron absorption cross section 5 barns/atom insoluble in water, dilute sulfuric acid, and hydrochloric acid at all concentrations soluble in nitric acid, aqua regia, and concentrated sulfuric acid insoluble in alkalies. [Pg.962]

The model sufficiently conforms to the change in the shape index with longer treatment time, and it was proved that processing particulate materials of smaller ductility, the particle shape is more adjustable stepwise in terms of the shape index. [Pg.712]

The degree of fragmentation was found to diminish with smaller sieve fractions at the same compression load when several sieve fractions of unmilled crystalline a-lactose monohydrate was used. The authors concluded that particle fragmentation would reduce as porosity approached zero and elastic behavior would start to dominate the consolidation process (43). With a decrease in particle size, yield pressure decreased and the strain rate sensitivity index increased (44) which suggested a reduction in the extent of fragmentation. The transition from brittle to ductile material was thought to occur for a median particle size of around 20 pm (45). [Pg.324]

Indium is a ductile, shiny silver-white metal that may also exist in a black powder form. Indium has an atomic weight of 114.82, an atomic number of 49, and a specific gravity of 7.31 g cm It has a boiling point of 2080 °C, a melting point of 1566°C, and is insoluble in water. The major oxidation states for indium are +1, +2 and +3 valences (Merck Index Online 2002). In aqueous solution, only In(III) is stable, but solid-state compounds with +1 and +2 valences have been isolated (Cotton and Wilkinson 1972). [Pg.801]

Tantalum is a gray, very hard, malleable, and ductile metal, with an atomic mass of 180.95 and atomic number 73 (Merck Index Online 2002). The boiling point of 5429°C and a melting point of 2996 °C are exceeded only by those of rhenium and tungsten (Hammond 1986, Merck Index Online 2002). Numerous forms of tantalum exist, including pentachloride, pentafluoride, and pent-oxide salts, which are insoluble in water. The most stable oxidation state is + 5. Tantalum is almost twice as dense as iron (density 16.6 gcm ) and about 90% as stiff, with a modulus of elasticity value, E = 2.7x10 psi (Taylor 1969, Merck Index Online 2002). [Pg.1087]

Hauser et al. [1993] claim that articles for medical and other uses made from a polymer alloy of a clear styrenic acrylate, a ductile styrene-diene polymer, and a rubbery block styrene-diene copolymer may be sterihzed by gamma irradiation, without significant increase in its yellowness index or significant deterioration of the alloy s mechanical properties (Table 11.9). There are many applications, e.g., urine sample botdes, items in space probes, and cosmetic containers, that are made from transparent plastics and need to be radiation-sterihzed. However, many clear plastics do develop color on irradiation, and their mechanical properties tend to deteriorate, particularly on irradiation in air. Hauser et al. [Pg.847]

Fig. 3.6c,d. Mechanical compaction features of Saharan res-servoirs. c Correlation curves of contact index with depth for Triassic, Devonian and Cambro-Ordovician reservoirs, Oued el-Mya Basin i sandstones with 20-30% ductile cement, 2 sandstones with 20-10% ductile cement, 3 sandstones with less than 10% ductile cement, d Comparative correlations of tight packing index for Devonian sandstones with 10-15% ductile cement from i Ghadames Basin, 2 Oued el-Mya Basin,... [Pg.73]


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See also in sourсe #XX -- [ Pg.508 ]

See also in sourсe #XX -- [ Pg.210 , Pg.214 , Pg.215 , Pg.216 , Pg.276 ]




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