Strain relation between initial tensile

FIG. 13.102 PpPTA yarn data showing the relation between tensile strength and initial modulus together with the curves calculated with Eq. (13.171) for five different values of critical shear strain, P from left to right P = 0.12, 0.115, 0.11, 0.105 and 0.10 rad used values are gd = 1.8 GPa and ecu = 240 GPa (see Table 13.18). Constructed from Figs. 22 and 23 in Northolt et al. (2005). The points above ( ) and below (O) the line for P — 0.11 are from different sets of PpPTA fibres. 

A 15 m long 1 mm-diameter wire of hardened steel is by a reversible, adiabatic elongation subjected to a tensile force F, that increases from Fi = ON in its initial state (1) to F2 = GOON in its final state (2). The stress-strain relation for the steel is given by the following relation between stress cr (MPa) and strain e... 

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