Results 11 to 20 of about 1,265,505 (345)
An Overview of Acoustic Impedance Measurement Techniques and Future Prospects
Metrology, 2021 In order to progress in the area of aeroacoustics, experimental measurements are necessary. Not only are they required for engineering applications in acoustics and noise engineering, but also they are necessary for developing models of acoustic ...
Nandeesh V. Hiremath +3 more
semanticscholar +1 more source
Ultrasonics, 2021 Matching layer is a critical component that determines the performance of piezoelectric ultrasound transducer. For most piezoelectric materials, their acoustic impedances are significantly higher than human tissues and organs, so a tunable matching layer
C. Wong +7 more
semanticscholar +1 more source
Acoustic impedance of orifices with grazing flow [PDF]
MATEC Web of Conferences, 2020 The paper presents an overview of the results of studies of acoustic impedance of orifices with grazing airflow. Empirical models of orifice impedance, which take into account the grazing flow, and the existing methods of measuring the acoustic impedance
Bejsenbaeva Diana +3 more
doaj +1 more source
JGEET: Journal of Geoscience, Engineering, Environment and Technology, 2020 This research ilustrate the generation of acoustic impedance inversion in the absence of well log using stacking velocity input in Salawati Basin, Papua, Indonesia using data obtained from seismic lines and stacking velocity section.
Handoyo +2 more
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Acoustics, 2020 Scanning acoustic microscopy reveals information on histology and acoustic impedance through tissues. The objective of the present study was to investigate whether acoustic impedance values in the liver over time reflect the progression of ...
Hideki Kumagai +5 more
doaj +1 more source
Semi-supervised learning for acoustic impedance inversion [PDF]
SEG technical program expanded abstracts, 2019 Recent applications of deep learning in the seismic domain have shown great potential in different areas such as inversion and interpretation. Deep learning algorithms, in general, require tremendous amounts of labeled data to train properly. To overcome
M. Alfarraj, G. AlRegib
semanticscholar +1 more source
Broadband impedance modulation via non-local acoustic metamaterials
National Science Review, 2021 Causality of linear time-invariant systems inherently defines the wave-matter interaction process in wave physics. This principle imposes strict constraints on the interfacial response of materials on various physical platforms.
Zhiling Zhou +4 more
semanticscholar +1 more source
Acoustic impedance of a cylindrical orifice [PDF]
Journal of Fluid Mechanics, 2020 We use matched asymptotics to derive analytical formulae for the acoustic impedance of a subwavelength orifice consisting of a cylindrical perforation in a rigid plate.
Rodolfo Brandão, Ory Schnitzer
semanticscholar +1 more source
Acousto-electrical speckle pattern in Lorentz force electrical impedance tomography [PDF]
, 2015 Ultrasound speckle is a granular texture pattern appearing in ultrasound imaging. It can be used to distinguish tissues and identify pathologies. Lorentz force electrical impedance tomography is an ultrasound-based medical imaging technique of the tissue
Catheline, Stefan +7 more
core +4 more sources
Estimation of acoustic impedance from seismic data using temporal convolutional network [PDF]
SEG technical program expanded abstracts, 2019 In exploration seismology, seismic inversion refers to the process of inferring physical properties of the subsurface from seismic data. Knowledge of physical properties can prove helpful in identifying key structures in the subsurface for hydrocarbon ...
Ahmad Mustafa, M. Alfarraj, G. AlRegib
semanticscholar +1 more source