Results 61 to 70 of about 6,969 (230)

Unraveling the reinforcing mechanisms for cementitious composites with 3D printed multidirectional auxetic lattices using X-ray computed tomography

open access: yesMaterials & Design
This study investigates the mechanical properties of cementitious composites with 3D-printed auxetic lattices, featuring negative Poisson’s ratios (auxetic behavior) in multiple directions.
Zhaozheng Meng   +6 more
doaj   +1 more source

Deformation of Gels with Spherical Auxetic Inclusions

open access: yesGels, 2022
Auxetic metamaterials possess unnatural properties, such as a negative Poisson’s ratio, which offers interesting features when combined with traditional materials.
Jan Zidek, Petr Polacek, Josef Jancar
doaj   +1 more source

Experiments and parametric studies on 3D metallic auxetic metamaterials with tuneable mechanical properties [PDF]

open access: yes, 2015
Auxetic metamaterials are synthetic materials with microstructures engineered to achieve negative Poisson's ratios. Auxetic metamaterials are of great interest because of their unusual properties and various potential applications.
Ghaedizadeh, A   +4 more
core   +1 more source

From Clinic to Computation: Multiscale Bioengineering Strategies for Durable Biological Aortic Valve Replacements

open access: yesAdvanced Functional Materials, EarlyView.
Bioprosthetic aortic valves have revolutionized the treatment of aortic stenosis, but their durability is limited by structural valve deterioration (SVD). This review focuses on the pericardial tissue at the heart of these valves, examining how its mechanical properties and calcification drive fatigue and failure.
Gabriele Greco   +7 more
wiley   +1 more source

Recent developments of auxetic metamaterials

open access: yesAdvances in Physics: X
Auxetic metamaterials, characterized by their negative Poisson’s ratio, exhibit unconventional mechanical behaviors such as lateral expansion when stretched and lateral contraction when compressed.
Nur Fatin Mohamad Razali   +4 more
doaj   +1 more source

Elastic constants of 3-, 4- and 6-connected chiral and anti-chiral honeycombs subject to uniaxial in-plane loading [PDF]

open access: yes, 2010
Finite Element models are developed for the in-plane linear elastic constants of a family of honeycombs comprising arrays of cylinders connected by ligaments. Honeycombs having cylinders with 3, 4 and 6 ligaments attached to them are considered, with two
Alderson, Andrew   +9 more
core   +2 more sources

Auxeticity‐by‐Assembly: Interlocking Modular Auxetic Metamaterials with Selectively Activatable AgNW–Graphene Oxide‐EGaIn Composite Interconnects for Scalable Freeform Photovoltaic Modules

open access: yesAdvanced Functional Materials, EarlyView.
Auxeticity‑by‑Assembly converts freeform photovoltaics from cut‑defined layouts to assembly‑defined systems. Standardized interlocking units generate negative‑Poisson‑ratio, reconfigurable architectures, while hinge regions are wired by selectively activatable AgNW–GO@EGaIn composite interconnects and a folding‑enabled interconnector layer. A decimeter‑
Seok Joon Hwang   +15 more
wiley   +1 more source

Auxetic Textiles

open access: yesActa Chimica Slovenica, 2014
Common materials have Poisson’s ratio values ranging from 0.0 to 0.5. Auxetic materials exhibit negative Poisson’s ratio. They expand laterally when stretched longitudinally and contract laterally when compressed.
Rant Darja   +2 more
doaj  

Intelligent Acousto‐Electrical Metamaterials (IAM) for Sound Source Detection

open access: yesAdvanced Materials, EarlyView.
Our proposed metamaterial concept enables sound source detection using a single material, in contrast to conventional arrays that require dozens or even hundreds of transducers. We show that the coupled acoustic–vibrational–electrical responses in piezoelectric metamaterials give rise to topology‐governed charge transport, producing distinct voltage ...
Victor Couëdel   +7 more
wiley   +1 more source

Mechanical performance of auxetic polyurethane foam for antivibration glove applications [PDF]

open access: yes, 2005
In this study the static and dynamic characteristics of conventional open cell polyurethane (PU), of auxetic (negative Poisson’s ratio) and of iso-density foams were analysed.
Giacomin, J   +3 more
core  

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