Results 21 to 30 of about 1,042,695 (274)

Simulation of ultrasonic lamb wave generation, propagation and detection for an air coupled robotic scanner [PDF]

open access: yes, 2011
A computer simulator, to facilitate the design and assessment of a reconfigurable, air-coupled ultrasonic scanner is described and evaluated. The specific scanning system comprises a team of remote sensing agents, in the form of miniature robotic ...
Burnham, Kenneth   +6 more
core   +1 more source

Narrow band space scanning two-dimensional linear frequency diverse array radar

open access: yesThe Journal of Engineering, 2019
Two–dimensional (2D) linear frequency diverse array (FDA) concept is extended to scan a 2D wide angular sector. This is achieved by highly unequal frequency increments in orthogonal 2D directions of the array.
Ramazan Çetiner, Altunkan Hizal
doaj   +1 more source

Reconstruction of Crack Cluster in the Rectangular Domain by Ultrasonic Waves [PDF]

open access: yes, 2010
In the present article we study the reconstruction problem for clusters of linear cracks inside a rectangular domain. The parameters to be reconstructed are the number of cracks and the size and slope of each defect. The scanning is performed by a single
BRIGANTE, MICHELE, M. A. Sumbatyan
core   +1 more source

Linear Energy Transfer Incorporated Spot-Scanning Proton Arc Therapy Optimization: A Feasibility Study

open access: yesFrontiers in Oncology, 2021
PurposeTo integrate dose-averaged linear energy transfer (LETd) into spot-scanning proton arc therapy (SPArc) optimization and to explore its feasibility and potential clinical benefits.MethodsAn open-source proton planning platform (OpenREGGUI) has been
Xiaoqiang Li   +10 more
doaj   +1 more source

Linear and Nonlinear Damage Detection Using a Scanning Laser Vibrometer

open access: yesShock and Vibration, 2002
Because a Scanning Laser Vibrometer (SLV) can perform vibration measurements with a high spatial resolution, it is an ideal instrument to accurately locate damage in a structure. Unfortunately, the use of linear damage detection features, as for instance
Steve Vanlanduit   +3 more
doaj   +1 more source

Hot-spots finding with modular gamma-ray system for sort and segregate activities [PDF]

open access: yesEPJ Web of Conferences, 2023
In the framework of the PI3SO project (Proximity Imaging System for Sort and Segregate Operations) funded by INFN-Energy project, aimed at the low and intermediate level radioactive waste (radwaste) classification, conditioning and characterization, a ...
Elio Poma Gaetano   +3 more
doaj   +1 more source

One-Dimensional Beam Scanning Transmitarray Lens Antenna Fed by Microstrip Linear Array

open access: yesIEEE Access, 2019
This paper proposed a one-dimensional beam scanning transmitarray lens antenna fed by a microstrip linear array antenna which owns a wide pattern in the plane orthogonal to the array axis and a narrow pattern in the plane that includes the array axis ...
Na Kou   +3 more
doaj   +1 more source

Wide-Band and Wide-Angle Scanning Phased Array Antenna for Mobile Communication System

open access: yesIEEE Open Journal of Antennas and Propagation, 2021
A wide-band phased array antenna with wide-angle scanning capability for mobile communication system is proposed in this article. An air cavity is properly embedded into the substrate under each array element.
Guangwei Yang, Yiming Zhang, Shuai Zhang
doaj   +1 more source

Linearly Scanning Spoof Surface Plasmon Polaritons Leaky-Wave Antenna With High Scanning Rate

open access: yesIEEE Open Journal of Antennas and Propagation
In this paper, a wide-angle linearly scanning leaky-wave antenna (LWA) based on spoof surface plasmon polaritons (SSPPs) with a very high scanning rate is proposed. A sine curve period is introduced to construct the SSPPs transmission line in the form of
Yue Wang   +7 more
doaj   +1 more source

Local Dielectric Measurements of BaTiO3-CoFe2O4 Nano-composites Through Microwave Microscopy

open access: yes, 2006
We report on linear and non-linear dielectric property measurements of BaTiO3 - CoFe2O4 (BTO-CFO) ferroelectro-magnetic nano-composites and pure BaTiO3 and CoFe2O4 samples with Scanning Near Field Microwave Microscopy.
Altshuler   +7 more
core   +1 more source

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