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Static tension

It is useful to get preliminary learning on the mechanical properties of materials under simple static tension. Members of engineering structures are often subjected to steady axial loads in tension. Moreover, the response of materials subjected to other types of loading also can often be explained or predicted on the basis of knowledge of their behaviour under simple tension. In addition, such behaviour is usually quite easy to study experimentally. [Pg.11]

The important elastic properties of a material undergoing deformation under static tension are stiffness, elastic strength and resilience. For a material obeying Hooke s law, the modulus of elasticity, E (= o/e), can be taken to be a measure of its stiffness. The elastic... [Pg.12]

All blood vessels experience internal tension under normal diastolic blood pressure. In addition to this static tension, chronic changes in wall stress that occur as a result of increases in blood pressure have been reported to lead to vascular remodeling, increased vascular wall diameter and thickness, in an attempt to restore normal values of vessel wall shear stress. Increased... [Pg.231]

The dynamic methods depend on the fact that certain vibrations of a liquid cause periodic extensions and contractions of its surface, which are resisted or assisted by the surface tension. Surface tension therefore forms an important part, or the whole, of the restoring force which is concerned in these vibrations, and may be calculated from observations of their periodicity. Dynamic methods include determination of the wave-length of ripples, of the oscillations of jets issuing from non-circular orifices, and of the oscillations of hanging drops. Dynamic methods may measure a different quantity from the static methods, in the case of solutions, as the surface is constantly being renewed in some of these methods, and may not be old enough for adsorption to have reached equilibrium. In the formation of ripples there is so little interchange of material between the surface and interior, and so little renewal of the surface, that the surface tension measured is the static tension ( 12. ... [Pg.363]

Tensions of non-relaxed interfaces are sometimes known by the adjective dynamic dynamic surface tension or dynamic inteifacial tension. The term dynamic is not absolute. It depends on De (i.e. on the time scale of the measurement as compared with that of the relaxation process). Some interfacial processes have a long relaxation time (polymer adsorption-desorption), so that for certain purposes (say the measurement of y] they may be considered as being in a state of frozen equilibrium. This last notion was introduced at the end of sec. 1.2.3. Unless otherwise stated, we shall consider static tensions and interfaces which are so weakly curved that curvature energies, bending moments, etc. may be neglected. [Pg.39]

Fig. 25.13 Ultrasonic transmission measurement results (excitation RF peak power 1.85 kW) carried out on samples of two aluminum plates 5 mm thick bonded together by an adhesive epoxy layer of 30-50 pm thickness during quasi-static tension loading (displacement rate 0.5 pm s ) until fracture. The amplitudes of the fundamental frequency transmitted through (a) a weak... Fig. 25.13 Ultrasonic transmission measurement results (excitation RF peak power 1.85 kW) carried out on samples of two aluminum plates 5 mm thick bonded together by an adhesive epoxy layer of 30-50 pm thickness during quasi-static tension loading (displacement rate 0.5 pm s ) until fracture. The amplitudes of the fundamental frequency transmitted through (a) a weak...
Daggumati S, Van Paepegem W, Degrieck J, Xu J, Lomov SV, Verpoest I. Local damage in a 5-hamess satin weave composite under static tension Part II — Meso-FE modelling. Compos Sci Technol 2010 70(13) 1934—41. [Pg.50]

Point b wire rope of static tension Ft M g+m g+ntag... [Pg.408]

Table 1. The rope static tension when the left skip at bottom hole. Table 1. The rope static tension when the left skip at bottom hole.
In-phase dynamic displacement Quadrature dynamic displacement Sample length, cm Average static tension, dynes Temperature °C In-phase dynamic load Ouadrature d3mamic load. [Pg.86]

Good fibrous reinforcement are generally britde in character they deform linearly to failure widiout yielding. This attribute creates a situation in which, in the presence of a notch or hole under static tension m conqiression test conditions, the fiber reinforced composite behaves more like a tnittle material than metal. This issue has been a source of concern in the materials development and selection activities, as well as in en eering design (27). [Pg.338]

Another aspect to consider is the cell source, cellular response and cellular affinity for the scaffold. ACL fibroblasts were shown to respond to specific growth factors, dynamic mechanical stimulation and static tension, but are known to have a low doubling rate, and a suitable source of autologous ACL fibroblasts is not yet available. This is why other sources, such as mesenchymal stem cells from bone marrow, are under investigation and seem to be an excellent cell source. They have the potential to differentiate into cells of multiple mesenchymal lineages. ... [Pg.626]

FIG. 7-5. Apparatus of Fujino, Kawai, and Horino for measurement of dynamic Young s modulus of fibers by free vibrations. (A. A ) Chucks (B) sample fibers (C) clamps (D) inertial disc (E) idler pulleys (F) piano wire (C) mirror to reflect light beam (H) weight to adjust static tension. [Pg.163]

Srivatsan, T.S., Godbole, C., Quick, T., Paramsothy, M., Gupta, M., 2013. Mechanical behaviour of a magnesium alloy nanocomposite under conditions of static tension and dynamic fatigue. Journal of Materials Engineering and Performance 22 (2), 439—453. [Pg.367]

Static tension lap-shear strength and modulus (thick adherend)... [Pg.294]

In the case of static tension two extensometers with a measuring length of 245 mm attached to both faces of the specimen were used. The static test data, i.e. the load-deformation relationship and the load-cross-head displacement relationship were recorded on X-Y plotters. [Pg.561]

In Table 9 are summarized the parameters obtained from static tension test carried out on [ 45°]i4 specimens. [Pg.216]

Young s modulus ( ) It is measured from a sample in static tension (or compression) where the sides are free to contract (or grow) - effect of Poisson s ratio - as the sample extends (contracts). It is the applied stress/longitudinal strain. [Pg.458]

Environmentally assisted cracking, which is produced by corrosion in the presence of static tension stress (stress-corrosion cracking) or cyclic stress (corrosion fatigue)... [Pg.32]


See other pages where Static tension is mentioned: [Pg.12]    [Pg.13]    [Pg.25]    [Pg.232]    [Pg.48]    [Pg.329]    [Pg.759]    [Pg.409]    [Pg.409]    [Pg.137]    [Pg.75]    [Pg.780]    [Pg.418]    [Pg.294]    [Pg.295]    [Pg.295]    [Pg.99]    [Pg.3007]   
See also in sourсe #XX -- [ Pg.48 ]

See also in sourсe #XX -- [ Pg.329 ]




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