Fig. 12.
The scatter plot plots normalised hysteresis A n over A 1 against number of cycles on a logarithmic scale. Number of cycles ranges from 1 to 100000 and normalised hysteresis ranges from 0 to 1.0. Present study C 14 and present study C 20 data points decrease rapidly from about 0.75 at low cycle numbers to about 0.30 near 30 cycles. Values continue decreasing gradually to about 0.20 between 100 and 10000 cycles and approach about 0.12 to 0.22 near 100000 cycles. Equation 9 shows a smooth decreasing trend from about 0.41 at 1 cycle to about 0.15 at 100000 cycles.Normalised hysteresis loop area (An/A1) plotted against number of cycles (n) for tests C14 and C20