Results 81 to 90 of about 27,884 (312)
Rheocasting versus Die Casting: An Insight into the Low‐Cycle Fatigue Behavior of AlSi7Mg0.6
Advanced Engineering Materials, EarlyView.The study compares rheocast lightweight components with high‐pressure die cast materials regarding microstructure and fatigue behavior. Rheocast process offers higher efficiency due to lower casting temperatures. Despite some microstructural differences, both processes show similar strengths (yield strength 125 MPa, tensile strength 240 MPa).
Julia Richter +4 more
wiley +1 more source
Influence of steam parameters on static and dynamic characteristics of labyrinth seal
Zhongguo Jianchuan Yanjiu, 2017 [Objectives] In order to study the influence of working medium parameters on the static and dynamic characteristics of seals in turbomachinery,[Methods] a three-dimensional model of a labyrinth seal was created, and air and steam were applied in the ...
HE Wenqiang, ZHENG Zhihao, ZHANG Wanfu
doaj +1 more source
Advanced Engineering Materials, EarlyView.Bimetallic (NiFe) and trimetallic (NiFeCr) nanoalloys (NAs) are synthesized using corresponding oxide mixtures using microwave hydrogen plasma within a few milliseconds. The process simultaneously 1) reduces metal oxides to metals; 2) downsizes the particles from micrometers to nanometers; and 3) blends the metals to form NAs.
Sachin Kumar +5 more
wiley +1 more source
Fluid Compressibility Effects on the Dynamic Response of Hydrostatic Journal Bearings [PDF]
, 1991 A theoretical analysis for the dynamic performance characteristics of laminar flow, capillar/orifice compensated hydrostatic journal bearings is presented. The analysis considers in detail the effect of fluid compressibility in the bearing recesses.
Sanandres, Luis A.
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Advanced Engineering Materials, EarlyView.Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar +2 more
wiley +1 more source
The Impact of Air Velocity on the Formation of Methane Concentration Fields in Excavated Workings
Applied SciencesThe article addresses a significant aspect of ventilation in excavated workings with the influx of hazardous gases. The selection of appropriate ventilation affects worker safety and helps avoid localized accumulation of gases at dangerous concentrations.
Adam P. Niewiadomski +6 more
doaj +1 more source
Advances in Mechanical Engineering, 2016 In engineering practice, most centrifugal compressors use variable inlet guide vanes which can provide pre-whirl and control volume flow rates. As the impeller of a centrifugal compressor passes through the wakes created from the guide vanes, the ...
Jianchi Xin, Xiaofang Wang, Haitao Liu
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Correlation research of rotor–stator interaction and shafting vibration in a mixed-flow pump
Journal of Low Frequency Noise, Vibration and Active Control, 2020 In order to study the shaft system vibration of mixed-flow pump under rotor–stator interaction, the unsteady pressure fluctuation characteristics are measured and the rotor axis orbit obtained based on the Bentley 408 data acquisition system.
Wei Li +6 more
doaj +1 more source
A test of the electromagnetic theory of the hydrogen vortices surrounding sun-spots [PDF]
, 1925 The extensive fields of force shown by the spectroheliograph in the hydrogen atmosphere surrounding sun-spots have been explained in two different ways: (1) as true hydrodynamical vortices, resembling great tornadoes, and (2) as electromagnetic phenomena,
Hale, George E.
core
Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma
Advanced Engineering Materials, EarlyView.The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie +4 more
wiley +1 more source