Results 51 to 60 of about 607,497 (301)

Precipitation Simulations of the O‐Phase in Ti2AlNb Alloys Processed by Laser Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Simulated and experimental evolution of the O‐phase volume fraction during postprocessing of a Ti‐21Al‐25Nb (at.%) alloy processed by laser powder bed fusion. With results of sensitivity to input parameters from a thorough and quantified analysis, the interfacial energy matrix/precipitate is the most relevant input parameter for the simulation of the O‐
Silvana Tumminello, Joachim Gussone, Suzana G. Fries, Marcus Rackel, Andreas Stark, Norbert Schell, Jan Haubrich, Guillermo Requena   +7 more
wiley   +1 more source

Optimization method for designing optical elements with an extended light source

Компьютерная оптика, 2020
A method for designing an optical element with two free-form surfaces generating a prescribed illuminance distribution in the case of an extended light source is considered.
E.V. Byzov , S.V. Kravchenko, M.A. Moiseev, L.L. Doskolovich   +3 more
doaj   +1 more source

Surface nematic quasi-uniformity

Journal of Physics A: Mathematical and Theoretical
Abstract Line fields on surfaces are a means to describe the nematic order that may pattern them. The least distorted nematic fields are called uniform , but they can only exist on surfaces with negative constant Gaussian curvature. To
A Pedrini, E G Virga
openaire   +2 more sources

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

Advanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi, Hadi Moutablaleh, Ignatius A. Setiawan, Mehrshad Mehrpouya   +3 more
wiley   +1 more source

Numerical studies on the radiation uniformity of Z-pinch dynamic hohlraum

Matter and Radiation at Extremes, 2018
Radiation uniformity is important for Z-pinch dynamic hohlraum driven fusion. In order to understand the radiation uniformity of Z-pinch dynamic hohlraum, the code MULTI-2D with a new developed magnetic field package is employed to investigate the ...
Fuyuan Wu, Yanyun Chu, Rafael Ramis, Zhenghong Li, Yanyun Ma, Jianlun Yang, Zhen Wang, Fan Ye, Zhanchang Huang, Jianmin Qi, Lin Zhou, Chuan Liang, Shijia Chen, Zheyi Ge, Xiaohu Yang, Shangwu Wang   +15 more
doaj   +1 more source

A non-completely regular quiet quasi-uniformity

, 1990
A complete quiet quasi-uniformity is constructed on A. Mysior’s regular but not completely regular space. This answers a question raised by D. Doitchinov at the Prague conference on categorial topology in 1988.
J. Hejcman, W. Hunsaker, P. Fletcher
core   +1 more source

Quasi-Monte Carlo Method for Infinitely Divisible Random Vectors via Series Representations [PDF]

, 2010
An infinitely divisible random vector without Gaussian component admits representations of shot noise series. Due to possible slow convergence of the series, they have not been investigated as a device for Monte Carlo simulation.
Junichi Imai, Junichi Imai (7595063), Reiichiro Kawai, Reiichiro Kawai (7588205)   +3 more
core   +1 more source

Microstructure, Thermal Transport, and Dry‐Sliding Tribology of Powder‐Metallurgy Al7075 Composites Reinforced With Sol–Gel‐Derived ZnO–rGO Hybrid Nanoparticles

Advanced Engineering Materials, EarlyView.
Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal, Cevher Kursat Macit, Merve Ayık, Hakan Tutumlu   +3 more
wiley   +1 more source

Stretching the Printability Metric in Direct‐Ink Writing with Highly Extensible Yield‐Stress Fluids

Advanced Functional Materials, EarlyView.
This study introduces “drawability” as a new metric for assessing printability in direct‐ink writing, focusing on gap‐spanning performance and speed robustness. By designing yield‐stress fluids with high extensibility, we demonstrate that extensional strain‐to‐break significantly enhances printability.
Chaimongkol Saengow, Samya Sen, Joaquin Yus, Eliza E. Lovrich, Amanda G. Hoika, Kelly M. Chang, Arielle A. Pfeil, Nellie Haug, Amy J. Wagoner Johnson, Randy H. Ewoldt   +9 more
wiley   +1 more source

Impact of signal wavelength on the semiconductor opticalamplifier gain uniformity for high speed optical routers employing the segmentation model [PDF]

, 2010
This paper investigates the impact of a train of input Gaussian pulses wavelength on semiconductor optical amplifier (SOA) gain uniformity for high speed applications. In high speed applications, the linear output gain of the input pulses is necessary in
Ghassemlooy, Zabih, Ng, Wai Pang, A. Abd El A, R. Ngah, Z. Ghassemlooy, M. H. Aly, Aly, Moustafa, M. F. Chiang, Chiang, Ming-Feng, Ngah, Razali, W. P. Ng, Abd El Aziz, Ahmad   +11 more
core   +1 more source