Modelling and Numerical Simulations of In-Air Reverberation Images for Fault Detection in Medical Ultrasonic Transducers: A Feasibility Study

Table 3

Materials properties of backing, matching, and lens layers used in numerical simulations.

Name	Backing layer	Matching layer	Lens layer
Young’s modulus	Pa	Pa	Pa
Poisson’s ratio	0.3	0.34	0.3
Density	11000 kg/m^3	1340 kg/m^3	1200 kg/m^3
Damping