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

Figure 6

Voltage amplitudes responses (left) and the corresponding in-air reverberation patterns (right) for various simulated damage to the following transducer layers: (a) backing layer; (b) matching layer; (c) crystal layer. (d) Lens layer. In-air reverberation patterns are given for eight damage severities indicated by integer numbers, where 1 (left image) corresponds to the full breakage and 8 (right) corresponds to the smallest damage severity, as indicated in Table 4.

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