Results 11 to 20 of about 252,667 (267)

Shape memory poly (ether ether ketone)s with tunable chain stiffness, mechanical strength and high transition temperatures

open access: yesInternational Journal of Smart and Nano Materials, 2022
Shape memory polymers, with intrinsic enhanced strength and high thermal stability, are highly demanded in aerospace, engineering manufacturing, and spatial structures.
Shuai Yang, Yang He, Jinsong Leng
doaj   +1 more source

Analysis of second-order effects evaluation of steel frames behaviour

open access: yesEngineering Structures and Technologies, 2020
The evaluation of second-order effects of steel framed structures can provide different analysis results than using linear analysis methods. In various structural engineering literature were distinguished different methods of analysis: taking or without ...
Raminta Venslavavičiūtė   +2 more
doaj   +1 more source

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

Thermal Analysis of Polyamide 6 Composites Filled by Natural Fiber Blend

open access: yesBioResources, 2016
This study describes changes in the viscoelastic and thermal properties of composites made with various percentages (up to 20 wt.%) of a natural fiber blend (a mixture of flax, kenaf, and hemp fibers) and polyamide 6 (PA 6). According to the differential
Esra Erbas Kiziltas   +5 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

On the composition of gauge structures [PDF]

open access: yesJournal of Physics A: Mathematical and General, 1996
Few elaborations are added to section 4 and section 5. To be published in Journal of Physics A: Mathematical and General.
openaire   +2 more sources

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

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