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Dynamic testing

After having proved the principles a dynamic test facility has been constructed. In this facility it is possible to inject 3 tracers in a flownng liquid consisting of air, oil and water. By changing the relative amounts of the different components it is possible to explore the phase diagram and asses the limits for the measurement principle. Experiments have confirmed the accuracy in parameter estimation to be below 10%, which is considered quite satisfactorily for practical applications. The method will be tested on site at an offshore installation this summer. [Pg.1057]

A further excellent demonstration of the need to interpret experimental results in terms of a specific flux model is provided by the dynamic test... [Pg.104]

Thus dynamic tests will be influenced by the existence of the dead-end pores and, in principle, they offer the possibility of obtaining quantitative inforiuation on diffusion in these pores. [Pg.105]

Two different types of dynamic test have been devised to exploit this possibility. The first and more easily interpretable, used by Gibilaro et al [62] and by Dogu and Smith [63], employs a cell geometrically similar to the Wicke-Kallenbach apparatus, with a flow of carrier gas past each face of the porous septum. A sharp pulse of tracer is injected into the carrier stream on one side, and the response of the gas stream composition on the other side is then monitored as a function of time. Interpretation is based on the first two moments of the measured response curve, and Gibilaro et al refer explicitly to a model of the medium with a blmodal pore... [Pg.105]

Finally, it should be pointed out that all the results on dynamical testing presented here are correct only if the tracer gas is not significantly adsorbed at the solid surface. If it is adsorbed weakly, so that a linear isotherm is appropriate, the equations should be modified by the following replacements ... [Pg.109]

Toward New Explosive Molecules in Dynamic Testing Los Alamos National Laboratory, N. Mex., Mar. 1984. [Pg.30]

R. L. WooUey and G. J. Germaine, "Dynamic Tests of Hydrogen-Powered IC Engines," World Hydrogen Unergy Conference, Miami Beach, Fla., 1976. [Pg.463]

The shear modulus of a material can be determined by a static torsion test or by a dynamic test employing a torsional pendulum or an oscillatory rheometer. The maximum short-term shear stress (strength) of a material can also be determined from a punch shear test. [Pg.60]

Testing yields basic information about any materials (plastics, steels, etc.), its properties relative to another material, its quality with reference to standards or material inspections, and can be applied to designing with plastics. Examples of static and dynamic tests are reviewed in Chapter 2. [Pg.297]

Dynamic shear moduli are conveniently determined with automated equipment, for instance, with the torsion pendulum. However, moduli derived from dynamic tests are often higher than the results from static tests for lack of relaxation. Examples are shown in Table 3.3. Young s moduli of the polymers A, B, C, D, derived from tensile tests (frequency 0.01 Hz) are compared with shear moduli S determined with the torsion pendulum (frequency > 1 Hz). For rubberlike materials is 3S/E = 1, according to Eq. [Pg.325]

The mass of the network strands is, therefore, more appropriately deduced from static tests than from dynamic tests. [Pg.326]

The general mode of operation in dynamic tests is to vary the stress sinusoidally with time. A viscoelastic solid in which the viscous element is that of a Newtonian liquid (as defined earlier) responds with a sinusoidal strain of identical oscillation frequency. However, because of the time-dependent relaxation processes taking place within the material, the strain lags behind the stress, as illustrated in Figure 7.9. [Pg.107]

Figure 7.9 Lag of strain behind stress in dynamic testing... Figure 7.9 Lag of strain behind stress in dynamic testing...
This second group of tests is designed to measure the mechanical response of a substance to applied vibrational loads or strains. Both temperature and frequency can be varied, and thus contribute to the information that these tests can provide. There are a number of such tests, of which the major ones are probably the torsion pendulum and dynamic mechanical thermal analysis (DMTA). The underlying principles of these dynamic tests have been covered earlier. Such tests are used as relatively rapid methods of characterisation and evaluation of viscoelastic polymers, including the measurement of T, the study of the curing characteristics of thermosets, and the study of polymer blends and their compatibility. They can be used in essentially non-destructive modes and, unlike the majority of measurements made in non-dynamic tests, they yield data on continuous properties of polymeric materials, rather than discontinuous ones, as are any of the types of strength which are measured routinely. [Pg.116]

Both static and dynamic tests are employed to evaluate the adhesion strength of cord-mbber composites. The major static tests used in tire industry are H-adhesion, 90/180° peel test, tire cord adhesion test (TCAT) and co-axial shear pull-out test (CSPT). Although these methods are... [Pg.386]


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Creep Dynamic testing

Dynamic Function Tests

Dynamic Ozone Chamber Test

Dynamic Perforation Test

Dynamic adhesion tests

Dynamic centrifuge tests

Dynamic corrosion test loop

Dynamic currents testing

Dynamic durability tests

Dynamic fatigue test

Dynamic flow tests, adsorption-desorption

Dynamic foam test

Dynamic foam test apparatus

Dynamic fracture testing

Dynamic hardness tests

Dynamic lifetime test

Dynamic load cycling aging test

Dynamic mechanical analysis relaxation testing

Dynamic mechanical analyzer test

Dynamic mechanical analyzer test method

Dynamic mechanical measurements tests

Dynamic mechanical spectroscopy testing

Dynamic mechanical testing

Dynamic mechanical testing phase angle

Dynamic mechanical testing torsion pendulum

Dynamic mechanical tests

Dynamic mechanical tests experimental

Dynamic mechanical tests experimental measurements

Dynamic mechanical tests experimental studies

Dynamic modulus test

Dynamic plate test

Dynamic puncture behavior (cone drop test)

Dynamic response testing

Dynamic stress test

Dynamic test output measurement

Dynamic testing, stress corrosion

Dynamic testing, texture

Dynamic tests

Dynamic tracer tests

Dynamic viscosity tests

Dynamical scaling tests

Experimental procedure dynamic mechanical testing

Glass transition dynamic mechanical testing

Hydrogen embrittlement dynamic tests

Impact Dynamic testing

Isothermal dynamic relaxation test

Isothermal dynamic time test

Linear viscoelasticity dynamic mechanical testing

Liquid-metal corrosion dynamic tests

Measurement of Gel Rheology Dynamic Tests

Modular dynamic test

Molecular dynamics mode coupling tests

Molecular dynamics test particle method

Natural rubber dynamic mechanical test

Oscillatory dynamic tests

Performance in dynamic tests

Polymer (continued dynamic mechanical testing

Pseudo-dynamic tests

Testing dynamic mechanical analysis

Testing methods dynamic mechanical analysis

Testing methods dynamic rebound test

The reactor for performance evaluation and dynamic test of catalyst

Viscoelasticity dynamic frequency sweep tests

Viscoelasticity dynamic mechanical testing

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