Which risk increases in an underwater acoustic transducer experiencing prolonged high-intensity sound projection near the cavitation threshold?

💡 Explanation

When an acoustic transducer operates near cavitation threshold, bubble formation and collapse erode the transducer surface, causing delamination because the high compressive forces weaken the bonding between piezoelectric elements and backing material. Therefore, delamination results, rather than corrosion, bandwidth reduction, or impedance change, which need electrochemical, signal processing, or circuit mechanisms.

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