Density materials

One of the most important properties of a material is its density, for which there are several expressions, namely, bulk, particle, and skeletal densities. The bulk density of solids is the overall density of the material including the interparticle distance of separation. It is defined as the overall mass of the material per unit volume, which can be determined by simply pouring a preweighed sample of particles into a graduated cylinder and measuring the volume occupied. The material can become denser with time and settling, and its bulk density reaches a certain limiting value, known as the tapped or packed bulk density. [Pg.38]

Particle density is the density of a particle including the pores or voids within the individual solids. It is defined as the weight of the particle divided by the volume occupied by the entire particle. Particle density is sometimes referred to as the material s apparent density. Direct measurement of particle density can be made by immersing a known quantity of the material in a nonwetting fluid, such as mercury, which does not penetrate into the pores. The volume of the particle is the volume change of the fluid. [Pg.38]

The skeletal density, also called the true density, is defined as the density of a single particle excluding the pores. That is, it is the density of the skeleton of the particle if the particle is porous. For nonporous materials, skeletal and particle densities are equivalent. For porous particles, skeletal densities are higher than the particle density. Measurements of the skeletal density can be made by liquid or gas pycnometers. [Pg.39]

In all spent researches the received ratio signal / noise and sensitivity for revealed defects, distribution of material density and the weights of high density components (tungsten, lead, uranium) are well agreed with results of alternate physics-chemical methods of analyses... [Pg.601]

Steel reinforeement is easily deteetable in concrete beeause of the eonsiderable difference in density of the respective constituent materials (density of Fe is 7.8 and 2.4 for eonerete (Ca,... [Pg.1002]

C RODEN = MATERIAL DENSITY = SPECIFIC HEAT C CONDK = HEAT CONDUCTIVITY COEFFICIENT... [Pg.248]

Film material Density, g/mL Area yield, m /kg Pricing By weight, /kg By area, //m ... [Pg.384]

AHoy Crystal stmcture Critical ordering temperature, T °C °F Mp, °C Material density, g/em Young s modulus, GPa... [Pg.129]

Materials Density, g/mL Hardness Electrical conductivity, % lACS Electrical resistivity, fifl-cm Young s modulus, GN/m ... [Pg.529]

The mineralogical, structural, physical, and thermodynamic properties of the various crystalline alumiaa hydrates are Hsted ia Tables 1, 2, and 3, respectively. X-ray diffraction methods are commonly used to differentiate between materials. Density, refractive iadex, tga, and dta measurements may also be used. [Pg.167]

Material Density, kg/nP Emissivity Specific heat, kJ/(kg-K) Thermal conductivity, W/(m-K) Thermal diffusivity, mVs X lO "... [Pg.381]

The shock pressures attainable with direct explosive contact depend on the shock impedance (shock velocity times material density) of the specimen material, and on the explosive energy of the contacting explosive. High-energy explosives placed directly on high-shock impedance materials can produce shock pressures of several tens of GPa. [Pg.45]

In Eulerian coordinates x and t, the mass and momentum conservation laws and material constitutive equation are given by (u = = particle velocity,, = longitudinal stress, and p = material density)... [Pg.261]

Material Density Melting or decomposition ID) lemperalvre (Kj Modulus (GNm- l Expansion coefficient X 10 (K- ) Thermal conductivity at lOOOK (Wm- K- I Fracture toughness K.IMNm- )... [Pg.206]

Material Density (kg/m ) Tensile strength (MN/m ) Flexural modulus (GN/m ) % elongation at break Price ... [Pg.22]

It is interesting to generalise this solution for any core skin density ratio. Fig. 2.20 shows how the optimum skin thickness varies with D. This is independent of the solid material density or modulus but is based on a weight... [Pg.69]

PE produced by a high-pressure polymerization process (pressure 1000-3000 atm) using a free radical initiator is a highly branched material that contains both LCBs and SCBs. The polymer so produced is a low-density material (density up to about 0.925 g/cc) and is known as high-pressure low-density PE (HP LDPE). The LCBs are formed via intermolecular hydrogen transfer [19], whereas SCBs are formed by intramolecular hydrogen abstraction [16]. [Pg.278]

Material Density (g/cm 1 Coating weight (kg/m ) 0-025 mm thickness Brinell hardness Ratio of contraction stresses in sprayed deposits 0-51 mm thick Compressive strength (stress to collapse) (MN/m )... [Pg.422]

The material density, strength etc. may be improved by further cycles of pitch impregnation and baking, the effect of each successive cycle tending to be smaller, but two such cycles are not unusual for high quality graphites. [Pg.863]

Material Density (g cm ) Penetration equivalent to a corrosion rale of 1 mdd ... [Pg.989]

Suppo.se the catalyst material (density, p in kg/m ) consists of uniform. spherical particles. The specific surface area (in m7kg) can be calculated as follows ... [Pg.68]

The microstructure parameter increases from 0 to 0.6, along with a reduction in silicon density. The material in this region consists of two phases, one which contains only SiH bonds, and one with SiH2 bonds (chains) and voids. In the third region (Ch > 0.22) the material mainly consists of chains of SiHa bonds, and the material density is much lower. [Pg.10]

The quantity of a material used will depend on the material density and strength (design stress) and these must be taken into account when comparing material costs. Moore (1970) compares costs by calculating a cost rating factor defined by the equation ... [Pg.293]

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