Results 61 to 70 of about 242,081 (346)

Effects of Nozzle Geometry on Cavitation in Nozzles of Pressure Atomizers

Journal of Fluid Science and Technology, 2008
The effects of nozzle geometry on cavitation in the nozzle of pressure atomizers and the liquid jet are examined using various two-dimensional (2D) nozzles with different geometries. Then, whether or not the conventional cavitation numbers can be used to predict the formation of supercavitation, in which liquid jet atomization is enhanced, is examined.
Shigeo Hosokawa, Kenji Isozaki, Akira Sou, Muhammad Ilham Maulana, Akio Tomiyama   +4 more
openaire   +4 more sources

Energy Dissipation in Nonlinearly Elastic Auxetic and Non‐Auxetic Mechanical Metamaterials with Friction and Material Damping

Advanced Engineering Materials, EarlyView.
This study presents a hyperelastic mechanical metamaterial for elastic energy dissipation. Energy is dissipated within its unit cells by friction assisted by material damping. Frictional contact is enhanced when using auxetic unit cells. The load–displacement plot for one compression cycle shows a pronounced hysteresis loop, indicating that a large ...
Eunhyeuk Jeong, Emilio Calius, Maziar Ramezani   +2 more
wiley   +1 more source

Influence of Heat Treatment on Microstructure and Mechanical Properties at Elevated Temperatures of Nonweldable Ni‐Based Alloy Printed by Fused Filament Fabrication

Advanced Engineering Materials, EarlyView.
The fused filament‐fabricated MAR‐M247 alloy without hot isostatic pressing shows the lowest porosity of 4%. Heat treatment at 1220 °C produces coarse precipitates and carbides. Specimens heat‐treated at 1220 °C exhibit higher tensile strength (683 MPa) and elongation (10%) at room temperature.
Haneen Daoud, Ying Zheng, Agata Kulig, Natalja Agarkov, Esma Mese, Wolfgang Hofmann, Peter Würtele, Uwe Glatzel   +7 more
wiley   +1 more source

The Structure of Gas Distribution on the Flow in and the Performance of Pressure Wave Refrigerator

Zhileng xuebao, 2014
The influence of some structural factors, i.e. the nozzle style, relative gas charge time on the flow in and the performance of pressure wave refrigerator are studied theoretically and experimentally in this paper.
Zheng Minfeng, Liu Xi, Huang Cheng, Lin Yuedong, Lei Xiaojian, Li Xuelai   +5 more
doaj  

Multimodal Characterization Method for Metamaterials with Tunable Mechanical Stiffness and Electrical Resistivity

Advanced Engineering Materials, EarlyView.
This study presents a multimodal characterization method for a prototype metamaterial model structure that features four distinct states of mechanical stiffness and electrical resistivity. Through simulations and experiments, it uncovers insights into the structural behavior, the correlation between changes in electrical resistivity and mechanical ...
Rebecca Kose, Michael Mathias Becker, Martin Schuppmann, Sarah Christine Lidwina Fischer   +3 more
wiley   +1 more source

Flow characteristics of a round jet with divergent and convergent tapered annulus

Nihon Kikai Gakkai ronbunshu, 2014
The flow characteristics of round air jets with tapered annulus was investigated experimentally. The divergent and convergent tapered annulus was installed concentrically inside of the round nozzle.
Taichi USUZAWA, Takahiro KIWATA, Daiji HIRANO   +2 more
doaj   +1 more source

Novel Surface‐Based Bézier Metamaterials: A Higher Degree of Parametrization toward Tailoring the Effective Properties under Compression

Advanced Engineering Materials, EarlyView.
Cubic Bézier curves are used in the synthesis of novel surface‐based metamaterials with tunable mechanical properties. Surface‐based geometries are 3D printed and tested in compression. The resulting mechanical properties are correlated to changes in the shape of the base curve, with high potential in energy absorption through the adjustment of their ...
Alberto Álvarez‐Trejo, Enrique Cuan‐Urquizo, Armando Roman‐Flores   +2 more
wiley   +1 more source

The usage of 3D printing in the analysis of the product design: Case: Electronic enclosure of compact pressure transmitter [PDF]

Tehnika, 2020
Additive manufacturing involves manufacturing of products with complex geometry in relatively small quantities, as well as the tools and molds manufacturing for mass production.
Vorkapić Miloš D., Ivanov Toni D., Baltić Marija Z., Kreculj Dragan D., Tanović Dragoljub Lj., Kovačević Aleksandar M.   +5 more
doaj  

Performance Analysis of Liquid Propellant Micro-propulsion with Liquid Oxygen as Cryogenic Oxidizer [PDF]

فصلنامه علوم و فناوری فضایی, 2019
Micro-propulsion Systems are low thrust engines that be used in space missions like keeping satellite in orbit and changing orbit. These engines have several kinds and liquid propellant micro-propulsion is used in this project.
Amirhossein Edalatpour, Fatholah Ommi, Zoheir Saboohi   +2 more
doaj   +1 more source

On the Deformation Behavior of Metastable CrMnNi Steels Processed by Directed Energy Deposition in Different Temperature Regimes

Advanced Engineering Materials, EarlyView.
In the present study, metastable CrMnNi steels with varying chemical compositions and a concomitantly altered stacking fault energy are processed via directed energy deposition and afterwards tested via tensile tests at different temperatures. The present study shows the influence of the manufacturing process on the elemental deformation mechanisms for
Julia Richter, Thomas Wegener, Florian Stredak, Gert Bartzsch, Steffen Scherbring, Javad Mola, Olena Volkova, Stefan Böhm, Thomas Niendorf   +8 more
wiley   +1 more source