Results 41 to 50 of about 202,142 (326)
International Journal of Distributed Sensor Networks, 2013 Near-field ultrasonic phased array theory is researched and utilized in the carbon-fiber wing box to identify the damage in the structure. Near-field ultrasonic phased array based structural health monitoring is researched to overcome the limitation of ...
Yajie Sun +3 more
doaj +1 more source
Ultrasonic Well Integrity Logging Using Phased Array Technology
Volume 9: Offshore Geotechnics; Petroleum Technology, 2023 Abstract Ultrasonic well integrity logging is an important and common procedure for well completion and plug-and-abandonment operations. Typical logging tools employ single-element ultrasound transducers. In medical ultrasound imaging, however, more flexible phased arrays are the standard.
Johansen, Tonni Franke +4 more
openaire +2 more sources
Performance of periodic piezoelectric composite arrays incorporating a passive phase exhibiting anisotropic properties [PDF]
, 2005 This paper explores the minimisation of interelement cross talk in 1-D and 2-D periodic composite array structures through the incorporation of a passive phase exhibiting anisotropic elastic properties.
Hayward, G. +4 more
core +1 more source
Applied Sciences, 2021 The use of pulse-compression in ultrasonic non-destructive testing has assured, in various applications, a significant improvement in the signal-to-noise ratio.
Muhammad Khalid Rizwan +4 more
doaj +1 more source
Phased Array Beamforming Methods for Powering Biomedical Ultrasonic Implants
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2022 Millimeter-scale implants using ultrasound for power and communication have been proposed for a range of deep-tissue applications, including neural recording and stimulation. However, published implementations have shown high sensitivity to misalignment with the external ultrasound transducer.
Braeden C. Benedict +2 more
openaire +3 more sources
An Omnidirectional Near-Field Comprehensive Damage Detection Method for Composite Structures
Applied Sciences, 2019 As one of the active structural health monitoring methods based on the Lamb wave, the ultrasonic phased-array damage detection method can provide information such as damage location and range more intuitively, which is why this method is a research ...
Zhiling Wang +3 more
doaj +1 more source
Investigating the influence of the constituent materials on the performance of periodic piezoelectric composite arrays [PDF]
, 2007 This paper describes a theoretical investigation into the influence of the constituent materials on periodic composite array transducer performance. A finite element (FE) model, configured in PZFlex, is used to analyze the performance of a wedge coupled ...
Gachagan, A. +3 more
core +1 more source
A review of miniaturised Non-Destructive Testing technologies for in-situ inspections [PDF]
, 2018 Non-destructive testing (NDT) techniques have become attractive trends of product manufacturing, installation and post-maintenance in the aerospace, automotive and manufacturing industry, because of its benefits such as cost saving, easy to use and high ...
Addepalli +12 more
core +1 more source
Strategies for data acquisition using ultrasonic phased arrays [PDF]
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2018 Ultrasonic phased arrays have produced major benefits in a range of fields, from medical imaging to non-destructive evaluation. The maximum information, which can be measured by an array, corresponds to the Full Matrix Capture (FMC) data acquisition technique and contains all possible combinations of transmitter–receiver signals.
A. Velichko, A. J. Croxford
openaire +4 more sources
Total focussing method for volumetric imaging in immersion non destructive evaluation [PDF]
, 2007 This paper describes the use of a 550 (25x22) element 2MHz 2D piezoelectric composite array in immersion mode to image an aluminum test block containing a collection of artificial defects.
Drinkwater, B. +6 more
core +1 more source