Results 11 to 20 of about 275,064 (219)

Optically Transparent Flexible Broadband Metamaterial Absorber Based on Topology Optimization Design

open access: yesMicromachines, 2021
A conformal metamaterial absorber with simultaneous optical transparency and broadband absorption is proposed in this paper. The absorptance above 90% over a wide frequency range of 5.3–15 GHz can be achieved through topology optimization combined with a
Pingping Min   +4 more
doaj   +1 more source

Shape Memory Epoxy Resin and Its Composites: From Materials to Applications

open access: yesResearch, 2022
Shape memory polymers (SMPs) have historically attracted attention for their unique stimulation-responsive and variable stiffness and have made notable progress in aerospace, civil industry, and other fields.
Lan Luo, Fenghua Zhang, Jinsong Leng
doaj   +1 more source

Review of Adaptive Shock Control Systems

open access: yesApplied Sciences, 2021
Drag reduction plays a major role in future aircraft design in order to lower emissions in aviation. In transonic flight, the transonic shock induces wave drag and thus increases the overall aircraft drag and hence emissions.
Sven Christian Künnecke   +4 more
doaj   +1 more source

Pultrusion of hybrid bicomponent fibers for 3D printing of continuous fiber reinforced thermoplastics

open access: yesAdvanced Industrial and Engineering Polymer Research, 2021
Continuous lattice fabrication is a newly introduced method for additive manufacturing of fiber-reinforced thermoplastic composites that allows to deposit material where it is needed.
Nicole Aegerter   +4 more
doaj   +1 more source

An improved method of using equilibrium profile to design radial tires

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2015
Tire performances are strongly influenced by cross section profile, and equilibrium profile has been a focus of radial tire researches, however, how to use the profiles to design radial tires has been reported rarely due to reasons of secrecy. This paper
Youshan WANG   +4 more
doaj   +1 more source

Validation of a 20 m Wind Turbine Blade Model

open access: yesEnergies, 2021
In the projects Smartblades and Smartblades 2 a full-scale 20 m rotor blade for the NREL CART3 wind turbine was designed, built and tested. The rotor blade was intended to have a strong bending–torsion coupling. By means of the experiments, the proof for
Christian Willberg   +3 more
doaj   +1 more source

A New Porous Nozzle for Aluminum Melts Purification—Preparation and Mathematical–Physical Model

open access: yesMetals, 2023
Aluminum and its alloy castings are used more and more widely, and it is particularly important to remove impurities in the alloy. According to the principle of bubble floatation for degassing aluminum melt, a new porous nozzle with controllable pores ...
Yapeng Tan   +11 more
doaj   +1 more source

A controlled recipient evacuation process to form composite profiles from flat multi-angle prepreg stacks – infrastructure and C-profile verification

open access: yesAdvanced Manufacturing: Polymer & Composites Science, 2019
Single-diaphragm forming is a cost saving alternative to labor-intensive ply-by-ply layup. This paper reports on forming of flat uncured multi-angle prepreg stacks into C shape.
E. Kappel, M. Albrecht
doaj   +1 more source

Developing a hybrid FRP-concrete composite beam

open access: yesScientific Reports, 2022
Current materials engineering trends put forward the development of efficient structural solutions. The steel replacement with fiber-reinforced polymers (FRP) exemplifies the key to the corrosion problem.
Mantas Garnevičius, Viktor Gribniak
doaj   +1 more source

Effects of Flexural Stiffness on Deformation Behaviour of Steel and FRP Stress-Ribbon Bridges

open access: yesApplied Sciences, 2021
Stress-ribbon systems develop the most flexible and slender bridges. A structural system of such elegant bridges consists of cables or ribbons and deck slabs placed to these strips to distribute the live load.
Algirdas Juozapaitis   +3 more
doaj   +1 more source

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