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Breaking strain, short term

More or less implicit in the theory of materials of this type is the assumption that all the fibers are straight and unstressed or that the initial stresses in the individual fibers are essentially equal. In practice this is quite unlikely to be true. It is expected, therefore, that as the load is increased some fibers will reach their breaking points first. As they fail, their loads will be transferred to other as yet unbroken fibers, so that the successive breaking of fibers rather than the simultaneous breaking of all of them will cause failure. As reviewed in Chapter 2 (SHORT TERM LOAD BEHAVIOR, Tensile Stress-Strain, Modulus of elasticity) the result is usually the development of two or three moduli. [Pg.358]

Short-term stress-strain testing is widely practised in the rubber industry, especially in the form of indentation hardness, tensile strength, and elongation at break. Applications range from quality control and measurement of the state of cure to material specification and a convenient means of monitoring aging resistance. [Pg.287]

Three significant characteristic points of the stress-strain curve are distinguishable. The first kink describes the elastic limit, the second kink is the yield strength and the third point describes the breaking point of the foil for uniaxial short term exposure. Up to the elastic limit, ETFE-foU shows an almost linear elastic behaviour. Ftooke s law prevails (at least for shortterm loads). From the elastic limit point up to the yield strength, ETFE... [Pg.214]

Polymer Short Term Tensile Strength MPa Flex Modulus GPa Elongation at Break % Notched Izod Impact Strain to Yield % Densit tL Cost fT Cost /rr Strength Cost Ratio Stiffness Cost Ratio... [Pg.9]

Figure 107 shows the nature of the creep relation to time. If y is the percentage shear creep strain, d-y/df is the creep rate. But, because of the logarithmic nature of the relation between rate and time, the creep is characterized by its rate at time (to) where the creep curve intercepts the log (time) axis. The shear rate at time, to, i.e. 7(to), is a linear function of the load applied to the joint provided that load is above a certain minimum required to induce creep. The magnitude of this minimum with reference to the short-term breaking stress has not been investigated. [Pg.240]


See other pages where Breaking strain, short term is mentioned: [Pg.305]    [Pg.20]    [Pg.23]    [Pg.539]    [Pg.42]    [Pg.417]    [Pg.231]    [Pg.336]    [Pg.122]    [Pg.122]    [Pg.725]    [Pg.342]    [Pg.426]    [Pg.169]    [Pg.351]    [Pg.173]    [Pg.713]    [Pg.546]    [Pg.1309]   
See also in sourсe #XX -- [ Pg.2 , Pg.297 ]




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Break strain

Breaking strain

Short-term

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