Results 91 to 100 of about 58,381 (315)
Phase-conjugate arrays and phase-conjugated fields produced by the arrays
Zhongguo Jianchuan Yanjiu, 2017 Phase Conjugate(PC) arrays can make sound waves travel backwards to converge,which can then be used to build the image of a noise source. This paper reviews and analytically studies three types of PC array(monopole PC array(PC/M),dipole PC array(PC/D) and perfect PC array(PC/P)) and the phase-conjugated fields produced by the arrays.
LI Sheng, LI Ting, LIU Song
openaire +1 more source
Ultrasonic phased array testing in the power generation industry : novel wedge development for the inspection of steam turbine blades roots [PDF]
The thesis presented herein comprises of the work undertaken to research novel methods of Phased array ultrasonic inspection of complex steam turbine blade roots as found in the power generation industry.
Charlesworth, Chris, Eng.D.
core
Digital Signal Processor Based Real-Time Phased Array Radar Backend System and Optimization Algorithms [PDF]
, 2017 This dissertation presents an implementation of multifunctional large-scale phased array radar based on the scalable DSP platform. The challenge of building large-scale phased array radar backend is how to address the compute-intensive operations and ...
Yu, Xining
core
Application of ultrasonic phased-array techniques for inservice inspection
, 1993 This paper gives u brief overview of modern ultrasonic inservice inspection techniques using a phased-array system. Experimental result on the application of the system in the nuclear field is dis¬cussed, especially the measurements carried out on ...
Rana, Liaquat Ali +5 more
core +1 more source
Zein‐Based Adhesives: Sustainable Extraction and Application in Bioadhesive Technologies
Advanced Engineering Materials, EarlyView.Zein is extracted from corn gluten meal using a simple and scalable process with high yield (~90%). The resulting protein is applied in bioadhesives modified with Ca2+ and Fe3+ ions, exhibiting substrate‐dependent adhesion. The findings demonstrate competitive bonding performance and highlight the role of ionic interactions in tuning adhesion ...
Paula Bertolino Sanvezzo +3 more
wiley +1 more source
A Novel Design of Slotted Waveguide Phased Array Antenna
Advanced Electromagnetics, 2019 A novel design of phased array antenna based on a Slotted Waveguide Antenna Array (SWAA) is introduced in this paper. The CST Microwave Studio simulation results show that the S‒parameters, the gain, the axial ratio, and the beamwidth of the proposed ...
M. Elhefnawy, A. A. Al-Hadi
doaj +1 more source
Physical Knowledge Based Scalable Phased Array Antenna Modeling for Radar Systems [PDF]
, 2016 The development of a large-scale phased array radar system such as the future MPAR will need a cost-effective tool for predicting electromagnetic characteristics of antennas.
Perera, Sudantha
core
Advanced Engineering Materials, EarlyView.A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm +3 more
wiley +1 more source
A High-Gain Sparse Phased Array With Wide-Angle Scanning Performance and Low Sidelobe Levels
IEEE Access, 2019 This paper introduces the concept of the sparse array into the design of a wide-angle scanning phased array to obtain the low sidelobe level (SLL). The adopted array element is a half-mode substrate integrated waveguide slot array, which can radiate a ...
You-Feng Cheng +3 more
doaj +1 more source
An investigation of a frequency diverse array
, 2009 This thesis presents a novel concept for focusing an antenna beam pattern as a function of range, time, and angle. In conventional phased arrays, beam steering is achieved by applying a linear phase progression across the aperture.
Antonik, P.
core