Zobrazeno 1 - 10
of 108
pro vyhledávání: '"Dipen N. Sinha"'
Publikováno v:
Shock and Vibration, Vol 2017 (2017)
In this work, we define the acoustic characteristics of a biphasic fluid consisting of static helium gas bubbles in liquid Fluorinert FC-43 and study the propagation of ultrasound of finite amplitudes in this medium. Very low sound speed and high sou
Externí odkaz:
https://doaj.org/article/f5610592956e41dc8e4cbb7d9846b632
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 68:1328-1346
A signal processing technique is presented for determining the composition of multiphase oil-water-gas flow in a pipe using noninvasive ultrasonic speed of sound measurements from a transmitter-receiver pair bonded to diametrically opposite sides of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ca3889c3536b4acda6234c8e0f79164
https://doi.org/10.1109/tuffc.2020.3026071
https://doi.org/10.1109/tuffc.2020.3026071
Publikováno v:
Journal of Vibration and Acoustics. 143
We numerically investigate the bandwidth and collimation characteristics of ultrasound beams generated by a simple collimated ultrasound beam source that consists of a piezoelectric disk operated near its radial mode resonances. We simulate the ultra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8a91a356ca3280eb6b4c64e1da6b32b
https://doi.org/10.1115/1.4050851
https://doi.org/10.1115/1.4050851
Publikováno v:
The Journal of the Acoustical Society of America. 151:A232-A232
The usefulness of machine learning algorithms is highly dependent on the formulation of relevant features that sufficiently represent the model. Acoustic resonance spectra consist of a series of peaks, representing resonant modes of the system and co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5776e88c7e7967e167bb89bfc3c91510
https://doi.org/10.1121/10.0011159
https://doi.org/10.1121/10.0011159
Publikováno v:
The Review of scientific instruments. 91(7)
A broadband wavelet approach to ultrasonic pulse-echo time-of-flight measurements is described. The broadband approach significantly reduces the time required for frequency-dependent pulse-echo measurements, enabling studies of dynamic systems rangin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05b9f6cd56822a0b09aa38745d4a4e20
https://pubmed.ncbi.nlm.nih.gov/32752829
https://pubmed.ncbi.nlm.nih.gov/32752829
Publikováno v:
Wave Motion. 76:19-27
We numerically investigate the resonance and vibration characteristics of radial modes of laterally stiffened piezoelectric disc transducers. Lateral stiffening is modelled using a spring and vibration characteristics of the piezo-disc are investigat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbc6dad914982b95fed40ccf7db109df
https://doi.org/10.1016/j.wavemoti.2017.07.005
https://doi.org/10.1016/j.wavemoti.2017.07.005
Publikováno v:
2019 IEEE International Ultrasonics Symposium (IUS).
In this work, previous work performed in our team that established the viability of using radial clamping on piezoelectric discs operating on their radial mode resonant frequencies to produce a collimated, yet low-frequency ultrasonic beam is expande
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3de6fac896dbdc406bb08ac3b34c4c6
https://doi.org/10.1109/ultsym.2019.8925882
https://doi.org/10.1109/ultsym.2019.8925882
Publikováno v:
2019 IEEE International Ultrasonics Symposium (IUS).
In this work, the development of a 3D acoustic borehole integrity monitoring system is described. After reviewing the state of the art in borehole integrity monitoring, it was determined that a critical technology gap existed. Although tools are in u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb096771fbf48284606fbc7436310132
https://doi.org/10.1109/ultsym.2019.8926250
https://doi.org/10.1109/ultsym.2019.8926250
Publikováno v:
AIP Conference Proceedings.
A novel approach to acoustic collimated beam generation is discussed. It relies on the radial modes of vibration of piezoelectric discs. Ultrasonic beam generation from these radial modes is investigated using numerical simulations and experiments. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c9239c20e61e6a84eaa8c730778b33e
https://doi.org/10.1063/1.5099763
https://doi.org/10.1063/1.5099763
Publikováno v:
Journal of Geophysical Research: Solid Earth. 121:6401-6410
Resonant Ultrasound Spectroscopy was used to determine the elastic moduli of Berea sandstone from room temperature to 478 K. Sandstone is a common component of oil reservoirs, and the temperature range was chosen to be representative of typical downh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d7c0411da5b2392fffea24a1ae85ea9
https://doi.org/10.1002/2016jb013410
https://doi.org/10.1002/2016jb013410