Figure 9.

Validation results using measured and calculated displacements. (a) Calculated displacement and velocity responses assuming a constant force at all frequencies. (b) Theoretical and measured displacement magnitude spectra results. The theoretical magnitude spectrum was calculated using the force derived from pressure measurements made with a needle hydrophone [Fig. 4b] divided by the calculated product iωZ(ω). The measured magnitude spectrum is from the displacement in Fig. 8a.