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An experimental study of interaction between surface waves and a surface breaking crack
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1984
Year
Stress WaveEngineeringSurface WavesPiezoelectric TransducersMechanicsSurface WaveMechanical EngineeringCivil EngineeringStructural Health MonitoringGeomechanicsExperimental StudySolid MechanicsWave MotionUltrasoundCrack FormationDynamic Crack PropagationMechanics Of MaterialsFracture Mechanics
The interaction between surface waves and a surface breaking crack is studied experimentally. In this study, the surface wave is generated by dropping a small ball on the long side of a large plate. The wave motions are monitored on both sides of the crack with a pair of piezoelectric transducers. Upon analyzing the results, we have found that: (1) the arrival time of different wave components to the recording transducer placed on the forward side of the crack may be estimated by regarding the crack tip as a buried source to each impinging wave components; and (2) the depth of the crack may be estimated by comparing the amplitude spectra of the wave motions recorded on both sides of the crack.