Results 61 to 70 of about 2,327,371 (190)
Anisotropy Corrected FMC/TFM Based Phased Array Ultrasonic Imaging in an Austenitic Buttering Layer
Applied Sciences, 2023 For the narrow gap dissimilar weld between a ferritic steel and a nickel base superalloy, a nickel base alloy buttering layer is deposited on the ferritic steel side as an intermediate layer. The bonding between the buttering layer and the ferritic steel
S. Ponseenivasan +2 more
doaj +1 more source
Chirped gratings in integrated optics [PDF]
, 1977 Gratings with variable periods (chirped gratings) have been fabricated by recording the interference pattern of a collimated laser beam with a converging beam generated by a cylindrical lens.
Katzir, A. +3 more
core +1 more source
Ultrasonic wave propagation in heterogenous media [PDF]
, 2012 The non-destructive testing of austenitic steel welds using ultrasound is of vital importance for assessing safety critical structures such as those found in the nuclear industry.
Bird, C. +3 more
core
Sparsity-driven image formation and space-variant focusing for SAR [PDF]
, 2011 In synthetic aperture radar (SAR) imaging, the presence of moving targets in the scene causes phase errors in the SAR data and subsequently defocusing in the formed image. The defocusing caused by the moving targets exhibits space-variant characteristics,
Çetin, Müjdat, Önhon, Özben Naime
core +1 more source
Optimization of graded multilayer designs for astronomical x-ray telescopes [PDF]
, 1999 We developed a systematic method for optimizing the design of depth-graded multilayers for astronomical hard-x-ray and soft-γ-ray telescopes based on the instrument’s bandpass and the field of view.
Christensen, Finn E. +3 more
core +1 more source
, 2014 The properties of symmetric nuclear and pure neutron matter are investigated within an extended self-consistent Green's function method that includes the effects of three-body forces.
Carbone, Arianna +2 more
core +1 more source
SensorsThe total focusing method (TFM) has been increasingly applied to weld inspection given its high image quality and defect sensitivity. Oblique incidence is widely used to steer the beam effectively, considering the defect orientation and structural ...
Mu Chen +3 more
doaj +1 more source
Implementation of a GPU accelerated total focusing reconstruction method within CIVA software [PDF]
AIP Conference Proceedings, 2014 This paper presents results of a TFM implementation for Full Matrix Capture acquisitions in CIVA, proposed as a post-processing tool for accurate analysis. This implementation has been made on GPU architecture with OpenCL to minimize the processing time and offer computational device flexibility (GPU/CPU).
Rougeron, Gilles +4 more
openaire +2 more sources
AIP Advances, 2022 Total-focusing imaging based on full-matrix data, which makes the synthesis of sound waves at the focus point, has been widely used and shown to improve imaging resolution effectively. In traditional total-focusing imaging, it is considered that the echo
Xia Zhao, Zhaoba Wang
doaj +1 more source
Efficient unidirectional nanoslit couplers for surface plasmons
, 2007 Plasmonics is based on surface plasmon polariton (SPP) modes which can be laterally confined below the diffraction limit, thereby enabling ultracompact optical components.
A Agrawal +35 more
core +3 more sources