Results 1 to 10 of about 675,978 (187)
Transformerless Ultrasonic Ranging System with the Feature of Intrinsic Safety for Explosive Environment [PDF]
Sensors, 2018 The transformer used in the conventional ultrasonic ranging system could provide a huge instantaneous driving voltage for the generation of ultrasonic wave, which leads to the safety problem in the explosive mixture. This paper proposes a transformerless
Yu Wang +7 more
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Intrinsic safety principle and phenomenon which influence the intrinsic safety of the circuitry involued [PDF]
, 1992 When an electric circuit is getting opening by a switch, we notice of course that the current stopS.to flow but we can also observe a very brief flash more or less bright depending on circumstances between the metallic separating parts of the switch ...
Davrou, Claude
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Dynamic Characteristic Analysis of Centrifugal Pump Impeller Based on Fluid-Solid Coupling
Journal of Marine Science and Engineering, 2022 Purpose: Centrifugal pumps are prone to vibration problems during operation due to poor dynamic characteristics of its impellers that serve as the only running parts of such devices; the dynamic characteristics of the impeller during operation are the ...
Yufang Li +4 more
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Experimental Study and Optimization of the Impeller in High-speed Centrifugal Pump
Guan'gai paishui xuebao, 2023 【Background and Objective】 Fatigue fracture has become a major cause of failure in centrifugal pump impellers due to their operation at high speeds. Excessive speed leads to various prestresses, resulting in severe vibrations, resonance, and ultimately ...
WANG Yanwei, REN Yancong, LI Yufang
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Journal of Materials Research and Technology, 2023 The extract of peanut shell extract (PSE) is firstly utilized as a novel eco-friendly corrosion inhibitor for the mitigation of corrosion on carbon steel in 0.5 M sulfuric acid medium. The corrosion inhibition performance and adsorption properties of PSE
Yufang Li +9 more
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Mathematics, 2023 The prediction of failure mechanisms in nonlinear elastic materials holds significant importance in engineering applications. In recent years, the phase-field model has emerged as an effective approach for addressing fracture problems.
Gang Zhang +5 more
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Don't break a leg: Running birds from quail to ostrich prioritise leg safety and economy in uneven terrain [PDF]
, 2009 Cursorial ground birds are paragons of bipedal running that span a 500-fold mass range from quail to ostrich. Here we investigate the task-level control priorities of cursorial birds by analysing how they negotiate single-step obstacles that create a ...
Birn-Jeffery, A V +6 more
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Polymer Testing, 2023 Monotonic and pulsating cyclic compression tests were performed systematically based on high density polyethylene (HDPE). The compressive creep behaviors were further implemented to compare with the ratcheting deformation under the same peak stress level.
Peishan Ding, Xiaotao Zheng, Linwei Ma
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Polymer Testing, 2023 Waterborne epoxy coating is an environmentally friendly anticorrosion coating that are gradually attracting people's attention. However, the anticorrosion performance of waterborne epoxy coatings is unsatisfactory.
Yufang Li, Feng Nan
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