Results 81 to 90 of about 819,489 (301)

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

open access: yesAdvanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz   +4 more
wiley   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth   +6 more
wiley   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

Research on Heat Dissipation of High-power Air-cooled Converter in Wind Turbine Tower

open access: yesKongzhi Yu Xinxi Jishu, 2017
In order to define whether the enclosed space where high power air-cooled converter of wind turbine is installed, namely ventilation cooling tower drum has ability to meet the external cooling requirement of current transformer, it assumed the tower drum
DONG Hongyun   +4 more
doaj  

Multisensor System for Isotemporal Measurements to Assess Indoor Climatic Conditions in Poultry Farms

open access: yesSensors, 2012
The rearing of poultry for meat production (broilers) is an agricultural food industry with high relevance to the economy and development of some countries.
Antonio G. Torres   +5 more
doaj   +1 more source

Ocean waves and turbulence as observed with an adaptive coherent multifrequency radar [PDF]

open access: yes, 1984
An adaptive coherent multifrequency radar system is developed for several applications. The velocity distribution (Doppler spectrum) and spectral intensity of 15 different irregularity scales (waves and turbulence) can be measured simultaneously ...
Gjessing, D. T., Hjelmstad, J.
core   +1 more source

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland   +5 more
wiley   +1 more source

Stress Responses in Horses Housed in Different Stable Designs during Summer in a Tropical Savanna Climate

open access: yesAnimals
Single-confinement housing can pose welfare risks to domestic horses. This study investigated horses’ stress responses when confined to single stalls in different stable designs in a tropical savanna region to address a gap in the literature.
Chanoknun Poochipakorn   +3 more
doaj   +1 more source

Experimental study on solids mixing and bubble behavior in a pseudo-2D, freely bubbling, gas-solid fluidized bed using PIV and DIA [PDF]

open access: yes, 2007
The hydrodynamics of a freely bubbling, gas-solid fluidized bed has been investigated experimentally with non-invasive measuring techniques in a pseudo-2D column filled with glass beads of 400-600 μm fluidized with air.
Kuipers, J.A.M.   +3 more
core   +1 more source

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