Results 1 to 10 of about 5,526 (237)

4D Printing of NiTi Auxetic Structure with Improved Ballistic Performance [PDF]

open access: yesMicromachines, 2020
Auxetic structures have attracted attention in energy absorption applications owing to their improved shear modulus and enhanced resistance to indentation.
Hany Hassanin   +3 more
doaj   +2 more sources

Auxetic metamaterials subjected to dynamic loadings [PDF]

open access: yesTheoretical and Applied Mechanics, 2022
Materials with negative Poisson’s ratio are called auxetics and they present enhanced properties (e.g. damping, indentation resistance, fracture toughness and impact resistance) under external loadings.
Tairidis Georgios K.   +4 more
doaj   +3 more sources

Compressive mechanical properties of ex-situ auxetic composite-filled tubes

open access: yesJournal of Materials Research and Technology, 2021
Auxetic materials are a class of materials that expand transversely when stretched longitudinally. Recently, auxetic materials are gaining special interest in wide range of applications mainly due to their attractive mechanical behavior.
Yingying Xue   +4 more
doaj   +1 more source

Investigation of the Auxetic of a novel geometric structure and improvement of Poisson’s ratio at different inner thicknesses

open access: yesGazi Üniversitesi Fen Bilimleri Dergisi, 2023
Poisson’s ratio, one of the important mechanical properties of materials and structures, is positive for almost all of the known materials and structures. However, auxetic materials or structures has negative Poisson’s ratios.
İsmail ERDOĞAN, İhsan TOKTAS
doaj   +1 more source

A novel auxetic structure based bone screw design: Tensile mechanical characterization and pullout fixation strength evaluation

open access: yesMaterials & Design, 2020
It was supposed that auxetic structure with negative Poisson's ratio (NPR) expands under stretch and could enhance the screw-bone fixation. In this study, the novel auxetic structure based bone screws were designed, and mechanical properties and fixation
Yan Yao   +5 more
doaj   +1 more source

Optimizing the Auxetic Geometry Parameters in Few Yarns Based Auxetic Woven Fabrics for Enhanced Mechanical Properties Using Grey Relational Analysis

open access: yesJournal of Natural Fibers, 2022
2D woven auxetic fabrics (AF) developed by weave design modification provide a continuous, commercial, and low-cost manufacturing process for high strength and stable auxetic structures.
Muhammad Zeeshan   +6 more
doaj   +1 more source

A novel cement-based auxetic foam composite: Experimental study

open access: yesCase Studies in Construction Materials, 2022
Auxetic foam materials contract (expand) laterally under uniaxial compressive (tensile) load. Due to superior characteristics of auxetic foam, e.g., shear resistance and in-plane indentation resistance, studies of auxetic foam composites have been ...
Ge Zhi Fan   +4 more
doaj   +1 more source

A finite element analysis of auxetic composite fabric with rotating square structure

open access: yesJournal of Industrial Textiles, 2023
The auxetic property of macro-porous rotating square structure has been investigated by many using either experimental or numerical approaches. Given the low breaking strength of the typical rotating square structure, it was proposed to employ an elastic
Yuping Chang, Yanping Liu, Hong Hu
doaj   +1 more source

Onset of criticality in hyper-auxetic polymer networks

open access: yesNature Communications, 2022
Auxetic materials are characterized by a negative Poisson’s ratio - they become thicker when stretched. Here, authors reach the limit of auxetic behavior, known as hyper-auxetic, in polymer networks, hitting an unconventional mechanical critical point.
Andrea Ninarello   +2 more
doaj   +1 more source

Negative Poisson’s ratio polyethylene matrix and 0.5Ba(Zr0.2 Ti0.8) O3–0.5(Ba0.7 Ca0.3)TiO3 based piezocomposite for sensing and energy harvesting applications

open access: yesScientific Reports, 2022
Finite element studies were conducted on 0.5Ba(Zr0.2 Ti0.8) O3–0.5(Ba0.7 Ca0.3)TiO3 (BCZT) piezoelectric particles embedded in polyethylene matrix to create a piezocomposite having a positive and negative Poisson's ratio of −0.32 and 0.2.
Saptarshi Karmakar   +9 more
doaj   +1 more source

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