Fig. 12.

Estimates of the peak force from the deconvolution method of source reconstruction for a $V_{\mathit{step}}$ = 273 V for 20 dB gain on all three PZT actuators: (a) PCT-009, (b) PCT-014 and (c) PCT-017. The range of acceptable applied forces determined in the force calibration procedure in Sect. 6.5 is shown by the gray bounding box and the applied force were uniquely determined for each PZT source. We observe that the peak force estimates are well constrained at incident angles $\theta <$ 53${}^{\circ }$