A time-frequency analysis of the correlation between the electromechanical impedance (EMI) of surface bonded piezoelectric wafer active transducers (PWaTs) and the pitch-catch signal.
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DOI: 10.1016/j.ultras.2021.106462
Abstract: Ultrasound based Structural Health Monitoring (SHM) commonly uses surface-bonded piezoelectric wafer active transducers (PWaTs) for ultrasound wave generation and sensing. Both the electromechanical impedance (EMI) of the surface bonded PWaT and the ultrasound pitch-catch signal… read more here.
Keywords: emi; pitch catch; catch signal; surface bonded ... See more keywords
Core and resonance logger (CARL) measurements of fine-grained sediments containing infauna
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DOI: 10.1121/1.5014823
Abstract: Benthic infauna perform important ecological functions such as water filtration, the recycling of organic matter, and forage for larger predators. However, how infauna affect bulk acoustical properties of the sediment is less studied and warrants… read more here.
Keywords: pitch catch; resonance; resonance measurements; infauna ... See more keywords
Robust downhole ultrasonic pitch-catch measurements of compressional and shear wave velocities
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DOI: 10.1121/1.5067785
Abstract: Probing acoustic wave velocities of earth formations, both in azimuth and radius, is important when evaluating anisotropy and/or heterogeneity of the formations. A conventional approach for evaluating these complex formations is to employ a sonic… read more here.
Keywords: pitch catch; wave velocities; ultrasonic pitch; wave ... See more keywords