Fig. 5.

Landscape of objective function $\mathcal{J}$ of Neo-fiber ($a=1$) over parameter space. The actual parameters ($C_1=30$ kPa, $C_2=5$ kPa) used in the simulation are shown by a yellow cross and estimated parameters by a red star. Figures on the right show a “zoom-in” near the estimated values, where a denser grid of parameters was used. 20 % Gaussian noise was added in the data, in the bottom right figure. 10 $\times$ 10 and 11 $\times$ 11 simulations were performed for the initial and refined parameter sweeps, respectively, with an average computational time of 51.120 s