Results 61 to 70 of about 1,326,537 (310)

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

Advanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb, Zachary T. Kloenne, Samuel R. Rogers, Chi Hang Dominik Kwok, Mark C. Hardy, Michele S. Conroy, David Dye   +6 more
wiley   +1 more source

Studies of particle and atom manipulation using free space light beams and photonic crystal fibres [PDF]

, 2009
Light can exert optical forces on matter. In the macroscopic world these forces are minuscule, but on the microscopic or atomic scale, these forces are large enough to trap and manipulate particles.
Gherardi, David Mark
core  

Joint Power and Bandwidth Allocation Algorithm with Inter-beam Interference for Multi-beam Satellite [PDF]

Jisuanji gongcheng, 2018
In consideration of the inter-beam interference in multi-beam satellite communication systems,a model of a multi-beam satellite system with inter-beam is set up by introducing with interference factor.Then,a joint power bandwidth allocation algorithm is ...
SHI Yu,ZHANG Bangning,GUO Daoxing,YANG Liu
doaj  

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Characteristics of the orbital rotation in dual-beam fiber-optic trap with transverse offset [PDF]

, 2016
The orbital rotation is an important type of motion of trapped particles apart from translation and spin rotation. It could be realized by introducing a transverse offset to the dual-beam fiber-optic trap. The characteristics (e.g.
Xiao, Guangzong, Luo, Hui, Yang, Kaiyong, Chen, Xinlin, Xiong, Wei   +4 more
core   +1 more source

Multimodal Data‐Driven Microstructure Characterization

Advanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source

Slip Localization Intensification Mediated by Grain Boundary Sliding in a Polycrystalline Nickel‐Based Superalloy

Advanced Engineering Materials, EarlyView.
The temperature dependence of fatigue behavior in nickel‐based superalloys is investigated through high‐resolution measurements of plastic localization. While increasing temperature reduces localization and enhances fatigue performance in René 88DT, Inconel 718 exhibits a sharp degradation at intermediate temperature due to intensified slip ...
M. Calvat, D. Anjaria, I. Woo, C. Bean, D. Texier, J. C. Stinville   +5 more
wiley   +1 more source

Numerical simulations and experiments of simultaneous acceleration of positive and negative ions in a radio frequency quadrupole

Physical Review Special Topics. Accelerators and Beams, 2006
The simultaneous acceleration of O^{+} and O^{-} beams in a radio frequency quadruple accelerator has been numerically simulated and the results are presented in this paper.
X. Q. Yan, Y. R. Lu, J. X. Fang, Z. Y. Guo, X. T. Ren, J. X. Yu, Y. Xie, C. E. Chen   +7 more
doaj   +1 more source

A DUAL BEAM SCANNING MICROSTRIP ANTENNA [PDF]

Progress In Electromagnetics Research Letters, 2014
A dual-beam scanning microstrip antenna is proposed in this letter. The well-known characteristic of the conventional leaky wave antenna is the beam scanning with operating frequency variation. Here, two L-shaped slots are applied on the ground plane of the conventional leaky wave antenna structure to obtain the dual-beam scanning characteristic.
Jie-Huang Huang, Christina F. Jou
openaire   +1 more source

Tailoring Functional Properties of Ti–Ni–Cu Shape Memory Alloy Thin Films for MEMS Actuators

Advanced Engineering Materials, EarlyView.
A comprehensive study of critical parameters required to develop well‐performing Ti–Ni–Cu thin film shape memory alloy microactuators is provided. Materials science and device integration aspects are integrated by addressing structural and physical relationships using complementary characterization techniques as well as a practical fabrication solution
Elaheh Akbarnejad, Aleksander Kostka, Gowtham Arivanandhan, Yujiao Li, Alan Savan, Manfred Kohl, Alfred Ludwig   +6 more
wiley   +1 more source