Results 51 to 60 of about 25,828 (296)

THE APPLICATION OF MESHLESS CYLINDER CONTROL SURFACE IN RANKINE-KELVIN HYBRID METHOD

open access: yesBrodogradnja, 2016
The solution of the three-dimensional seakeeping problem with forward speed in the frequency domain still has some well-known problems. In this paper, a Rankine-Kelvin hybrid method benefiting the merits of both the Rankine source and Kelvin source is ...
Hui Li   +3 more
doaj   +1 more source

A Priori Information and Off-Axis Measurements in Terahertz Tomography

open access: yesIEEE Access, 2023
Terahertz tomography is a non-contact inspection technique to image objects from multiple angles and reconstruct their 3D volume from intensity and time-of-flight transmission data, without the need for radiation protection measures.
Karl H. May   +3 more
doaj   +1 more source

Two-dimensional wave radiation and diffraction problems in a flat or sloping seabed environment [PDF]

open access: yesJournal of Fluids and Structures, 2017
Abstract Two-dimensional water wave problems are investigated in an environment with a flat or sloping rigid seabed adopting a continuous Rankine source method. All the fluid domain surfaces, that is the free, body and seabed surfaces, are discretized using continuous panels.
Feng, Aichun, Bai, Wei, Price, WG
openaire   +2 more sources

Development of neural networks for modeling diffraction of electromagnetic radiation on a single cylinder and a group of cylindrical objects

open access: yesКомпьютерная оптика
We show the effectiveness of using neural networks to model the diffraction of electromagnetic radiation on cylindrical objects, and compare various architectures of neural networks. The error of the neural-network-aided diffraction modeling is evaluated
E.E., D.L.
doaj   +1 more source

Influence of Surface Finish on the Tribological Performance of AlTiBN Coatings Deposited on Forming Tools

open access: yesAdvanced Engineering Materials, EarlyView.
Aluminum and nitride coatings are used in industry because they are hard, resist wear, and protect against oxidation. Adding boron can improve friction behavior and other properties. This study tests coatings on surfaces with different finishes. Results show smoother surfaces perform better, while rough ones wear faster, although coatings can reduce ...
Adrián Claver   +9 more
wiley   +1 more source

Spatial resolution in optical transition radiation beam diagnostics

open access: yesPhysical Review Special Topics. Accelerators and Beams, 1998
An evaluation of the optical transition radiation (OTR) single particle image dimension is obtained using diffraction theory based on a realistic description of the radiation source.
M. Castellano, V. A. Verzilov
doaj   +1 more source

Existence and Uniqueness of Solutions of Integral Equations for Acoustic Radiation and Diffraction Problems [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1967
Although a radiation or diffraction problem may have a unique solution, certain formulations of the problem may result in integral equations that do not have solutions, or whose solutions are not unique. Typically, when considering the exterior problem, trouble may occur at frequencies corresponding to resonance in the interior of the body.
openaire   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

open access: yesAdvanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati   +11 more
wiley   +1 more source

Solving of the inverse diffraction problem in the first Rytov approximation for retrieving the phase object dielectric permittivity

open access: yesКомпьютерная оптика
In the study we derive a solution of the inverse diffraction problem aimed at retrieving the dielectric permittivity of a phase object by using the changes in the intensity and phase shift of coherent laser radiation probing the object.
E.V. Parkevich   +2 more
doaj   +1 more source

Finite and infinite element method applied to water wave diffraction problems [PDF]

open access: yes, 1999
In this work, three types of infinite elements are developed to solve the problem of linear water wave diffraction by objects in a 2D unbounded domain. The infinite elements, which model the far field wave potential stretching to infinity, are coupled to
Baghbani, A., Baghbani, Alireza
core  

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