Results 201 to 210 of about 10,296 (259)
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Boosting the application of ultrasonic arrays
AIP Conference Proceedings, 2002The strategy currently pursued at IZFP to open a wider field of applications for ultrasonic arrays is described. A bundle of measures is performed to reduce the costs and at the same time to improve the capabilities and the reliability of ultrasonic array systems.
Martin Spies, Spies Martin
exaly +2 more sources
Ultrasonic imaging using arrays
Proceedings of the IEEE, 1979An analysis is presented of the two general types of arrays-the direct imaging array and the phased array. These are analyzed over three levels of approximation: geometric optics, steady-state sinusoidal diffraction, and wide-band diffraction. Systems are studied which provide electronic deflection and focusing.
exaly +2 more sources
Fundamentals of Ultrasonic Phased Arrays
Solid Mechanics and Its Applications, 2015Lester W Schmerr
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Ultrasonic array scanning of the kidney
Ultrasound in Medicine & Biology, 1974Abstract An ultrasonic scanning system has been devised, utilizing an array of six plane transducers, each used as a separate transmitter-receiver. The transducers were arranged in a concave assembly so that their beams intersected at a point equidistant from each face.
R A, Mountford, M, Halliwell, P N, Wells
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Applied Acoustics, 2021
Abstract Ultrasonic array modelling is widely used to understand the performance of new transducer materials or geometries in a range of application scenarios. However, array modelling from first principles is both time-consuming and challenging due to the required knowledge of accurate acoustic and piezoelectric properties.
Sun, Xiaoyu +2 more
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Abstract Ultrasonic array modelling is widely used to understand the performance of new transducer materials or geometries in a range of application scenarios. However, array modelling from first principles is both time-consuming and challenging due to the required knowledge of accurate acoustic and piezoelectric properties.
Sun, Xiaoyu +2 more
openaire +1 more source
The Journal of the Acoustical Society of America, 1978
The subject of multielement ultrasonic transducers is presented, with emphasis on describing the ultrasonic transducer design techniques and time-delay pulsing schedules used to achieve real-time imaging, beam steering, and beam focusing. Transducer design techniques make use of a first-order scattering theory in fluids, which model quite nicely many ...
J. L. Rose, P. A. Meyer, M. S. Good
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The subject of multielement ultrasonic transducers is presented, with emphasis on describing the ultrasonic transducer design techniques and time-delay pulsing schedules used to achieve real-time imaging, beam steering, and beam focusing. Transducer design techniques make use of a first-order scattering theory in fluids, which model quite nicely many ...
J. L. Rose, P. A. Meyer, M. S. Good
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Investigation of ultrasonic array
Ultrasound, 2010This paper explores the data collection method for the ultrasonic array which can drastically decrease the scanning time, because the minimum excitation-reception sequences were used for reconstruction of the coordinates of the defects. The described data collection and processing method do not use classical phased array possibilities such as beam ...
R. Kažys, L. Kairiūkštis
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Simulations of ultrasonic fields of radial ultrasonic array
Ultrasound, 2007Objective of this study was to develop an ultrasound probe small enough (diameter – less then 10mm, length less then 6mm) The probe must send and receive signals in 360 degrees, obtaining in this way the information needed for the software to generate a 2D image.
E. Jasiūnienė, R. Kažys, L. Mažeika
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Self-localization with ultrasonic sensor array
2008 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2008We have developed a positioning system that uses a phased array sensor to measure the distance and direction of multiple landmarks relative to the position of a mobile robot so that the robot can self-localize. The positioning system can control the strength and the width of the beam from the phased array sensor and observe the multiple landmarks at ...
Yukihiko Ono +5 more
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Robot guidance using ultrasonic arrays
Journal of Robotic Systems, 1994AbstractThe flexibility of robots can be considerably increased by having sensors that can detect the location and orientation of the components that are being manipulated by the robots. Vision systems have been widely applied to this problem, but there has been very little reported work on the use of ultrasonic sensors. This article reports the use of
Philip Webb, Ian Gibson, Catherine Wykes
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