Results 91 to 100 of about 6,023 (304)

Cross-scale prediction for thermochemical–mechanical damage of barrel weapons under high-temperature and supersonic environments

Friction
Thermochemical–mechanical damage prediction suitable for high-temperature and supersonic conditions is essential for evaluating the life span of barrel weapons.
Shuli Li, Guolai Yang, Liqun Wang
doaj   +1 more source

The impact of the Laval nozzle shape on thrust production, using the method of characteristics [PDF]

INCAS Bulletin
This investigation examines the influence of Laval nozzle geometry on thrust production using the method of characteristics. It explores various divergent section configurations, analyzing their impact on nozzle design and performance.
Andrei - Ionut PARASCHIV
doaj   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Improvement of gas turbine engines due to isothermal expansion in the turbine

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2017
The article presents the results of the study of application of isothermal expansion in the turbine of gas turbine engines as a way of improving the thermodynamic cycle. We present equations of work and ideal cycle efficiency of a gas turbine engine with
M. A. Muraeva, I. M. Gorjunov
doaj   +1 more source

Molecular Dynamics Studies of Shape Memory Polymers: From Bead–Spring Models to Atomistic Simulations

Advanced Engineering Materials, EarlyView.
Coarse‐grained (left) and atomistic (right) models of the shape memory polymer ESTANE ETE 75DT3 are shown schematically. The two representations bridge molecular detail and mesoscopic description. Both models capture shape memory behavior, linking segmental mobility and conformational relaxation of anisotropic chains to macroscopic recovery, and ...
Fathollah Varnik
wiley   +1 more source

Enhancing Bubble Removal in Geometry‐Optimized Electrodes

Advanced Engineering Materials, EarlyView.
3D‐printed lattice electrodes outperform stochastic foams in alkaline water electrolysis despite 20%–25% lower surface area. Straight flow channels generate Venturi‐like bubble entrainment, suppressing gas accumulation that renders foam interiors electrochemically inactive.
Florian Wiesner, Peter Förster, Alexander Limper, Anselm Brodersen, Matthias Wessling, John Linkhorst   +5 more
wiley   +1 more source

Transonic flow field in critical flow Venturi nozzle

Applied and Computational Mechanics
In this paper, theoretical and numerical analysis of a transonic flow field of critical flow Venturi nozzles according to the ISO 9300 standard is performed. Deviations of the flow field from an estimate based on one dimensionality are clarified.
Kreuzová T.
doaj   +1 more source

Integration of Low‐Voltage Nanoscale MoS2 Memristors on CMOS Microchips

Advanced Functional Materials, EarlyView.
This article presents the first monolithic integration of nanoscale MoS2‐based memristors into the back‐end‐of‐line of foundry‐fabricated CMOS microchips in a one‐transistor‐one‐resistor (1T1R) architecture. The MoS2‐based 1T1R cells exhibit forming‐free, nonvolatile resistive switching with ultra‐low operating voltages, low cycle‐to‐cycle variability ...
Jimin Lee, Sofía Cruces, Xiaohua Liu, Yang Chen, Vasilis A. Maroufidis, Janghyun Jo, Lukas Völkel, Dennis Braun, Michael Möller, Leon Brackmann, Holger Kalisch, Michael Heuken, Andrei Vescan, Rafal E. Dunin‐Borkowski, Joachim Mayer, Stefan Wiefels, Max C. Lemme   +16 more
wiley   +1 more source

Identification of two conformationally trapped n-propanol-water dimers in a supersonic expansion

, 2017
Two conformers of the n-propanol-water dimer have been observed in a supersonic expansion using chirped-pulse Fourier-transform microwave (CPFTMW) spectroscopy.
Elena R. Alonso, Finneran, Ian A., Blake, Geoffrey A., P. Brandon Carroll, Ian A. Finneran, Griffin J. Mead, Carroll, P. Brandon, Geoffrey A. Blake, Mead, Griffin J., Alonso, Elena R.   +9 more
core   +1 more source

Supersonic expansions of Molecular Oxygen

, 2010
Peer ...
Pérez Ríos, Jesús, Hernández, Marta I., Tejeda, Guzmán, Montero, Salvador   +3 more
openaire   +1 more source