Results 281 to 290 of about 16,283 (340)

Radio-frequency sensor for non-destructive evaluation of composite materials. [PDF]

open access: yesSci Rep
Samolej K   +4 more
europepmc   +1 more source

State of the Art of Low-Frequency Acoustic Modulation: Intensity Enhancement and Directional Control. [PDF]

open access: yesAdv Sci (Weinh)
Xu J   +13 more
europepmc   +1 more source

Noninvasive Intracranial Source Signal Localization and Decoding with High Spatiotemporal Resolution. [PDF]

open access: yesCyborg Bionic Syst
Zhang H   +7 more
europepmc   +1 more source

Ultrasonic phased array systems

The Journal of the Acoustical Society of America, 1980
Ultrasonic phased array method and apparatus for the static or dynamic investigation of structures, such as organs of the body, or intra-uterine detail, wherein ultrasonic echo pulses, reflected back from a testpiece to one or a group of adjacent transducers of a linear transducer array, are converted to corresponding electric signals which are then ...
James M. S. Hutchison, Robert D. Selbie
openaire   +1 more source

Quantitative ultrasonic phased array imaging

AIP Conference Proceedings, 2014
When imaging with ultrasonic phased arrays, what do we actually image? What quantitative information is contained in the image? Ad-hoc delay-and-sum methods such as the synthetic aperture focusing technique (SAFT) and the total focusing method (TFM) fail to answer these questions.
Brady J. Engle   +2 more
openaire   +1 more source

Ultrasonic phased array controller for hyperthermia applications

Ultrasonics, 1991
Multiple and mechanically scanned ultrasound transducer systems have demonstrated the efficacy of using ultrasound to produce deep localized hyperthermia. The use of ultrasonic phased arrays has been proposed as an alternative to these systems. A phased array offers a more flexible approach to heating tumours in that the size, shape, and position of ...
P J, Benkeser, T L, Pao, Y J, Yoon
openaire   +3 more sources

Ultrasonic phased arrays for nondestructive testing

NDT International, 1987
Abstract Although ultrasonic phased arrays are potentially ideally suited to many applications in NDT, their use in practice is limited by the complexity of array probe manufacture and the bulk and cost of the associated electronic control instrumentation.
A. McNab, M.J. Campbell
openaire   +2 more sources

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