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Influence of surface roughness on the measurement of acoustic nonlinearity parameter of solids using contact piezoelectric transducers

AeroacousticsEngineeringSurface RoughnessPhysical AcousticMechanical EngineeringApplied PhysicsTransducer PrincipleStructural Health MonitoringPiezoelectricityAcoustic SensorUltrasoundAcoustic Nonlinearity ParameterContact Piezoelectric TransducersMicromachined Ultrasonic Transducer