Results 81 to 90 of about 189,725 (256)

Study on AC Loss of REBCO Tape Encapsulated with Magnetic Materials

open access: yesCrystals
REBCO coated conductors have a multi-layer structure, and the outer encapsulation layer is generally made of non-magnetic copper material. This paper proposes a new structure of REBCO tape, which replaces the copper layer with magnetic material to ...
Wei Chen   +6 more
doaj   +1 more source

Thermal and Electromagnetic Analyses of Interior Permanent Magnet Machines Accounting for AC Copper Loss

open access: yes, 2021
This thesis presents novel methods for AC copper loss calculation and analysis, and investigates the influence of AC copper loss on electromagnetic and thermal performance, with particular emphasis on torque/power-speed characteristics of interior ...
Zhang, Yafeng
core  

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

open access: yesAdvanced 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   +7 more
wiley   +1 more source

Effect of Switching Frequency and Number of Winding Layers on Copper Loss of an Inductor

open access: yes, 2000
Power inductor operating in a high frequency switching power converter experiences both core loss and copper loss. It is a common belief that the higher the switching frequency is, the higher will be the inductor loss.
Pong, MH, Chung, HY
core   +1 more source

Feasibility of Nitrogen as a Carrier Gas for Inconel Cold Spray in Hydropower Application

open access: yesAdvanced Engineering Materials, EarlyView.
N2, despite being nearly two orders of magnitude cheaper than He, is a feasible carrier gas for cold spray Inconel coatings in hydropower repair applications when higher gas temperature and pressure are used. Reducing powder size significantly improved cavitation resistance, while the addition of fine chromium carbide particles further enhanced erosion
Tianhao Wang   +4 more
wiley   +1 more source

Experimental Measurements Of Air Forced Convection Through Copper Foams

open access: yes, 2012
This paper aims at investigating the air heat transfer and fluid flow through open-cells copper foam samples with different number of pores per unit of length (PPI) with constant porosity (ε=0.93) and foam core height of 40 mm.
Mancin, Simone   +3 more
core  

Machine Learning‐Supported Analysis for Predicting and Visualizing Nonlinear Relationships Between Material Properties in Electroplated Chromium Layers

open access: yesAdvanced Engineering Materials, EarlyView.
This study applies machine learning regression to predict chromium layer thickness in decorative trivalent chromium electroplating, using 441 experiments from laboratory‐scale (1L) and pilot‐scale (14L) setups. Tree‐based models, particularly CatBoost, outperformed linear regression by capturing nonlinear parameter interactions (R2$R^2$ up to 0.77 ...
Christoph Baumer   +4 more
wiley   +1 more source

Influence of the form and level of organic versus inorganic copper and zinc in diets for growing and finishing pigs

open access: yes, 2006
Pharmacological levels of inorganic forms of copper (Cu) and zinc (Zn) are frequently used in diets for pigs to improve performance and control post-weaning colibacillosis. However, the use of such forms and levels causes mineral accumulation in the soil,
Hernández, Aracely
core  

Influence of Si Content and Milling Duration on the Microstructure and Mechanical–Tribological Properties of AlCoCrFeNiSi High‐Entropy Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
Si‐doped AlCoCrFeNi high‐entropy alloys are synthesized by mechanical alloying to reveal the effect of Si content and milling time on phase evolution, microstructural refinement, and tribological behavior. A transition from FCC to BCC structure, significant grain refinement, and enhanced hardness and wear resistance are achieved, with the 4 at% Si ...
Mustafa Okumuş   +2 more
wiley   +1 more source

Decomposition of Copper Formate Clusters: Insight into Elementary Steps of Calcination and Carbon Dioxide Activation

open access: yesChemistryOpen, 2019
The decomposition of copper formate clusters is investigated in the gas phase by infrared multiple photon dissociation of Cu(II)n(HCO2)2n+1−, n≤8. In combination with quantum chemical calculations and reactivity measurements using oxygen, elementary ...
Tobias F. Pascher   +3 more
doaj   +1 more source

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