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← ScienceWhich risk increases when a piezoelectric crystal within a sonar transducer experiences prolonged, intense acoustic cavitation?
A)Reduced Curie temperature threshold
B)Increased spontaneous polarization efficacy
C)Accelerated crack propagation and delamination✓
D)Suppressed static dielectric permittivity
💡 Explanation
Crack propagation accelerates because acoustic cavitation causes fatigue. Crack growth follows Paris' law; the crack propagation rate is proportional to stress intensity, therefore stress-induced fatigue at crystal boundaries leads to delamination rather than affecting piezoelectric properties alone.
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