Results 61 to 70 of about 875,462 (392)

Advances in Hybrid Icing and Frosting Protection Strategies for Optics, Lens, and Photonics in Cold Environments Using Thin‐Film Acoustic Waves

Advanced Engineering Materials, Volume 27, Issue 13, July 2025.
This article provides a comprehensive overview of fundamentals and recent advances of transparent thin‐film surface acoustic wave technologies on glass substrates for monitoring and prevention/elimination of fog, ice, and frost. Fogging, icing, or frosting on optical lenses, optics/photonics, windshields, vehicle/airplane windows, and solar panel ...
Hui Ling Ong, Zhangbin Ji, Luke Haworth, Yihao Guo, Jaime del Moral, Stefan Jacob, Ana Borras, Agustin R. Gonzalez‐Elipe, Jikai Zhang, Jian Zhou, Glen McHale, Yong‐Qing Fu   +11 more
wiley   +1 more source

Aerodynamic Simulation of Helicopter Based on Polyhedron Nested Grid Technology

Applied Sciences, 2020
In this paper, a computational fluid dynamics (CFD) simulation method based on the polyhedral nested grid is developed. By comparing the simulation and test results of the hovering flow field of the Caradonna–Tung rotor, the forward flight flow field of ...
Chenglong Zhou, Ming Chen
doaj   +1 more source

Analysis of model rotor blade pressures during parallel interaction with twin vortices [PDF]

, 2005
This paper presents and provides analysis of unsteady surface pressures measured on a model rotor blade as the blade experienced near parallel blade vortex interaction with a twin vortex system.
Beddoes T. S., Brocklehurst A., Caradonna F. X., Caradonna F. X., Copland C. M., Coton F. N., F. N. Coton, Gowanlock D. K., Hoad D. R., Horner M. B., Jones H. E., Liu Z., Lowson M. V., Masson C. A., Padakannaya R., R. A. McD. Galbraith, R. B. Green, Tangler J. L., Tyler D. J., Wu J. M.   +19 more
core   +1 more source

Preparation and Thermal Modification of Disentangled Ultrahigh‐Molecular‐Weight Polyethylene Particles for Powder‐Based Additive Manufacturing

Advanced Engineering Materials, EarlyView.
Ultrahigh‐molecular‐weight polyethylene powders (<≈40 μm) with a bulk density of 260 g L−1 are prepared from a silica supported bisimine pyridine iron catalyst. The nascent product is disentangled and can be thermally densified without loss of its low viscosity.
Adrian Vaghar, Georgij Jegorenkov, Yunus Kutlu, Andreas Ostendorf, Gerrit A. Luinstra   +4 more
wiley   +1 more source

A Review on Performance Calculation and Design Methodologies for Horizontal-Axis Wind Turbine Blades

Energies
The efficient, low-cost, and large-scale development and utilization of offshore wind energy resources is an inevitable trend for future growth. With the continuous increase in the scale of wind turbines and their expansion into deep-sea locations, there
Rongyu Zha, Siyuan Wu, Chang Cai, Xiaohui Liu, Dian Wang, Chaoyi Peng, Xuebin Feng, Qiuhua Chen, Xiaohui Zhong, Qing’an Li   +9 more
doaj   +1 more source

The Effect of Blade Angle Deviation on Mixed Inflow Turbine Performances

Applied Sciences, 2022
The choice of blades for mixed turbines is to achieve the required deflection with minimal losses. In addition, it is necessary that the blade functions without a detachment in a wide area outside the nominal operating point of the machine.
Mohammed Amine Chelabi, Milan Saga, Ivan Kuric, Yevheniia Basova, Sergey Dobrotvorskiy, Vitalii Ivanov, Ivan Pavlenko   +6 more
doaj   +1 more source

Analytical Investigation of Some Three-Dimensional Flow Problems in Turbomachines [PDF]

, 1952
One problem encountered in the theory of turbomachines is that of calculating the fluid velocity components when the inner and outer boundaries of the machine as well as the shape of or forces imparted by the blade row are given.
Marble, Frank E., Michelson, Irving
core  

Mitigation of Cracks in High‐Performance Nickel‐Based Superalloys in Powder Bed Fusion Laser Beam of Metals Using a Metal Matrix Composite Approach

Advanced Engineering Materials, EarlyView.
High‐performance nickel‐based superalloys are often not processible in additive manufacturing (AM) due to hot cracking. The findings in this manuscript propose an efficient method to mitigate cracking and enhance mechanical properties of these alloys by producing a metal matrix composite, contributing to the material and process perspective of the AM ...
Klaus Büßenschütt, Maël Pontoreau, Christian Haase, Johannes‐Henrich Schleifenbaum   +3 more
wiley   +1 more source

Standard NIJ 0115.00 za testiranje otpornosti zaštitnih prsluka na ubode nožem i predmetima sa oštrim vrhom / NIJ 0115.00 standard for testing stab resistance of body armor

Vojnotehnički Glasnik, 2008
Standard NIJ 0115.00 (prema Nacionalnom institutu pravde SAD), namenjen je za utvrđivanje minimuma tehničkih zahteva i metoda ispitivanja otpornosti zaštitnih prsluka, koji treba da zaštite gornji deo tela od uboda nožem i predmetima sa oštrim vrhom ...
Đuro Jovanić
doaj   +1 more source

Toughness of Confined Auxetic Foams

Advanced Engineering Materials, EarlyView.
Auxetic (negative Poisson's ratio) materials offer benefits such as impact mitigation, thermal insulation, vibration damping, and reduced shear strain, although their fracture mechanics are largely unexplored. This study investigates damage initiation and propagation in confined re‐entrant auxetic foams from polyurethane via experimental ...
Adrianos E. F. Athanasiadis, Oliver Duncan, Michal K. Budzik, Marcelo A. Dias   +3 more
wiley   +1 more source