Input data

・ , the successive time points, at which the FSR measures the normal stress at the inner surface of the BS,

・ , the values of the stress measured by the FSR at the above time points

・ , the parameter determined from the calibrating identification as is described in Remark A.2

・ , the thickness of the BS

・ Optional: an analytical or tabular dependence of the speed of the bulk acoustic waves in the BS on the volumetric mass density of the BS (i.e., dependence in Remark A.1)

Parameters that can be identified

At any three successive time points measured by the FSR (see the upper half of this table), one can identify the following parameters:

・ , the speed of the bulk acoustic waves in the BS

・ , the stress-relaxation time of the BS

・ , the source term in the acoustic equation (see the text on (A.31) and (A.32))

・ , the volumetric mass density of the BS (if the above option is available)

・ , the bulk modulus of the BS (if the above option is available)