Results 111 to 120 of about 397,660 (289)

Space station power semiconductor package [PDF]

open access: yes
A package of high-power switching semiconductors for the space station have been designed and fabricated. The package includes a high-voltage (600 volts) high current (50 amps) NPN Fast Switching Power Transistor and a high-voltage (1200 volts), high ...
Balodis, Vilnis   +4 more
core   +1 more source

Inter- and intragrain currents in bulk melt-grown YBaCuO rings

open access: yes, 2003
A simple contactless method suitable to discern between the intergrain (circular) current, which flows in the thin superconducting ring, and the intragrain current, which does not cross the weakest link, has been proposed.
A. B. Surzhenko   +43 more
core   +1 more source

Solid-state stud welding of 2024 aluminum alloy stud and aluminum alloy/resin composite panel

open access: yes, 2017
A2024 aluminum alloy studs were joined to aluminum alloy/resin composite panels by solid-state stud welding method. The studs have a circular projection at its bottom. Five different shapes of the projections were prepared in this study.
Y. Harada, Taichi Asakura, S. Kumai
semanticscholar   +1 more source

Fitting of mechanical material behaviour of structural steel for numerical modelling

open access: yesSteel Construction, EarlyView.
Abstract Numerical simulations are widely used in structural engineering research, and validated models enable the efficient expansion of datasets without costly additional testing. They allow the investigation of alternative geometries and loading scenarios beyond those covered by experiments.
Felix Eyben   +2 more
wiley   +1 more source

Growing Ohio's Green Energy Economy [PDF]

open access: yes, 2009
Provides an overview of the state's solar, wind, biomass, and geothermal energy and fuel cell industries and assesses their economic contribution and potential for growth.
Amy Gomberg, Wren Kruse
core  

Strip loading in reinforced concrete: Mechanical modeling and experimental validation

open access: yesStructural Concrete, EarlyView.
Abstract Strip loading of reinforced concrete is a common problem in engineering practice. The concrete compressive strength at the load introduction can be several times higher than the uniaxial concrete compressive strength, which can be attributed to geometrical and passive confining stresses caused by load dispersion and reinforcement, respectively.
Fabian Morger   +2 more
wiley   +1 more source

Joint Strength of Low Carbon Steel Joints and its Selection Guide of Friction Welding Conditions for Low Force Requirements made by Friction Stud Welding Method

open access: yes, 2018
平板のような板材と丸棒などの棒材とを溶接して作製す るスタッド継手は,建築構造物をはじめ,各種輸送機器や 電気製品など幅広く利用されている.このようなスタッド 継手は,主にアーク方式や CD(Capacitor Discharged)方式な どによって作製されているが ,その多くが手溶接となるこ とから継手強度のばらつきも多く,接合部の信頼性が特に 問題となる場合がある.このため,ばらつきが少なく接合 部で破断しない良好な継手の作製にはスタッド溶接技能者 の資格が必要であるなど,簡便に用いることが難しい.
M. Kimura, M. Kusaka, K. Kaizu
semanticscholar   +1 more source

Performance analysis of strengthening reinforced concrete beams under pure torsion using galvanized steel sheets: Experimental and numerical investigation

open access: yesStructural Concrete, EarlyView.
Abstract Reinforced concrete (RC) beams can be subjected to torsion, and failure due to torsion is brittle and poses a significant risk to occupants. Moreover, strengthening of existing RC beams in torsion may be required due to the upgrade of the structures or as part of structural rehabilitation.
Ahmed Hamoda   +4 more
wiley   +1 more source

Latching device [PDF]

open access: yes, 1975
A latching device is suited for use in establishing a substantially motionless connection between a stationary receiver and a movable latching mechanism.
Ulrich, G. W.
core   +1 more source

Assessment of shear reinforcement enhancement on the punching shear capacity of flat concrete slabs with openings

open access: yesStructural Concrete, EarlyView.
Abstract Reinforced concrete flat slabs are widely employed in contemporary architecture due to their structural efficiency and construction simplicity; however, their susceptibility to punching shear failure remains a critical design concern, particularly at slab–column connections where concentrated loads occur.
Jeovan Pereira das Virgens   +4 more
wiley   +1 more source

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