MEASUREMENT OF INPUT MECHANICAL IMPEDANCE OF PLANE ARRAY ELEMENT USING IMPULSE SOUND TUBE

In this paper, a method of measuring the input mechanical impedance of the array element （longitudinal vibrating transducer） with square radiation head by using impulse sound tube is proposed. The resonant frequencies determined from the measured input mechanical impedance are in agreement with those obtained from the electrical ademittance circle diagram of the element. This indirectly shows that the method is feasible.