Results 111 to 120 of about 9,651 (303)

Programmable Multi‐Axially Aligned Aerogels via Sequential Freeze‐Casting for Tailored Anisotropy and Tunable Mechanics

open access: yesAdvanced Science, EarlyView.
Conventional single‐gradient freeze‐casting typically produces unidirectional porous architectures with limited transverse connectivity. The Sequential Hybridization by Infiltration and Freeze‐casting Technique (SHIFT) addresses this constraint by integrating secondary aligned structures within a preformed primary scaffold.
Kiho Sung, Sungchul Shin
wiley   +1 more source

Optimum design of a composite outer wing subject to stiffness and strength constraints [PDF]

open access: yes, 2011
Composite materials have been more and more used in aircraft primary structures such as wing and fuselage. The aim of this thesis is to identify an effective way to optimize composite wing structure, especially the stiffened skin panels for minimum ...
Liu, Yifei
core  

Absorption of Broadband Low‐Frequency Sound Beyond the Thermodynamics Limit: An Acoustic Resonator With Magnetic Bearing

open access: yesAdvanced Science, EarlyView.
This work presents a magnetic‐bearing acoustic resonator that overcomes the thermodynamics limit of sound absorption. By introducing tunable negative stiffness, it achieves broadband low‐frequency absorption within a compact cavity, far exceeding the performance achievable by classic mass‐tuned designs.
Ying Hu   +5 more
wiley   +1 more source

Investigation of Mechanical Properties for Blend Epoxy-Polysulfide Reinforced with Woven Carbon and Glass Fiber [PDF]

open access: yesMechanics of Advanced Composite Structures
In this work, the effect of the axial buckling load characteristics of a composite material consisting of epoxy resin (EP) and different weight percentages of polysulfide (PS) (0%, 2%, 4%, 6%, and 8%) prepared and reinforced with woven carbon and glass ...
Waleed Hamed Hamza   +2 more
doaj   +1 more source

Buckling and post-buckling analysis of auxetic cellular structures [PDF]

open access: yes
Numerical simulations and experimental tests are performed in this contribution to investigate buckling and failure modes of auxetic cellular structures as well as sandwich panels with auxetic cores.
BELHADJAMOR, Meriem   +3 more
core  

Ductile B2 Intermetallics‐Driven Strength‐Ductility Synergy in Heterolaminated Multi‐Principal Element Alloys

open access: yesAdvanced Science, EarlyView.
Intrinsic phase toughening transforms a brittle B2 intermetallic into a plastically deformable, load‐bearing phase, while a heterogeneous laminated architecture suppresses strain localization and interface cracking. The synergy between ductile intermetallics and mesoscale heterogeneity establishes a general design strategy for breaking the long ...
Lu Yang   +9 more
wiley   +1 more source

BUCKLING ASSESSMENT OF IMPERFECT CYLINDRICAL SHELLS UNDER AXIAL LOADS USING A GEP TECHNIQUE [PDF]

open access: yese-GFOS, 2018
Determination of buckling behavior of shell structures has long been identified as a challenging task. This is largely because the buckling behavior is masked by local large deformations, which occur once the critical load is reached.
doaj   +1 more source

From Folding Mechanics to Robotic Function: A Unified Modeling Framework for Compliant Origami

open access: yesAdvanced Science, EarlyView.
A geometry‐consistent DDG framework captures compliant origami deformation from rigid‐like folding to soft panel bending. By tuning crease and panel stiffness, bistable snap‐through responses transform into smooth monostable deformation, enabling programmable stability and robot‐scale locomotion.
Bohan Zhang   +7 more
wiley   +1 more source

Optimization of a Composite Wing Subject to Multi Constraints [PDF]

open access: yes, 2013
In this thesis, an investigation has been carried out into a minimum weight optimization analysis of a composite wing with multi design constraints under both static and dynamic loadings. The study includes the influence of a morphing leading edge on the
Fu, Qiang
core  

Atomically Correlated Phosphorus–Sulfur Sites in Carbon Nitride for Efficient Hydrogen Peroxide Production

open access: yesAdvanced Science, EarlyView.
Atomically correlated phosphorus–sulphur sites are introduced into graphitic carbon nitride to regulate charge distribution, suppress localized trapping, and enhance oxygen activation. The resulting metal‐free photocatalyst selectively promotes the two‐electron oxygen reduction pathway, enabling efficient hydrogen peroxide production in pure water ...
Adnan Ahmad   +12 more
wiley   +1 more source

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