Frequency response function of cracked timoshenko beam measured by a distributed piezoelectric sensor

In the present report, a novel concept of frequency response function (FRF) is introduced for piezoelectric beam. First, a model of Timoshenko beam bonded with a piezoelectric layer is established and used for deriving the conventional frequency response function acknowledged as mechanical frequency response function (MERF). Then, the output charge produced in the piezoelectric layer is calculated from the MFRF and therefore obtained frequency-dependent function is called electrical frequency response function (EFRF) for the integrated beam.

Từ khóa: Frequency response function, Cracked Timoshenko beam, Piezoelectric layer, Sensitivity analysis, Mechanical frequency response function