Auxetic Textile Materials - A review

Hu, Hong

doi:10.15406/jteft.2017.01.00002

Cited by 22 publications

(11 citation statements)

References 54 publications

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“…In these cases, the strength values of interest must be exclusively determined with the support of experimental tests. Special care is actually spent also for the use of auxetic materials, as efficient alternatives in the field of textile architectures, see [62][63][64][65][66].…”

Section: Synclastic Structures Flat Structures Anticlastic Structuresmentioning

confidence: 99%

Textiles and Fabrics for Enhanced Structural Glass Facades: Potentials and Challenges

Bedon

Rajčić

2019

Buildings

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The use of textiles in architecture can cover a wide set of solutions and functions, spanning from buildings, towards geotechnical, aeronautic or automotive fields, etc. Special applications involve textiles in the health care or dressing scenarios. A multitude of other functions can then be found relatively for the use of textiles in building engineering and facades. As far as traditional facades or roofs composed of glass are taken into account, textiles offer a relevant number of potential uses that are specifically focused on energy, acoustic, insulation and even structural goals, in addition to pure architectural objectives. It is known that glass is relatively versatile, but has intrinsic needs and thermo-physical and mechanical features that require dedicated design methods, towards safe design purposes. Glass itself, in the form of constructional material, cannot be directly compared to other consolidated solutions for buildings. The same concept applies to textiles, and to their use to enhance other building components. Besides the key advantages deriving from the use of textiles in glass facades and envelopes—in the form of light, thermal or acoustic insulation, or energy efficiency—special care must be spent for specific structural requirements and performances. In some cases, textiles can in fact offer enhanced resistance to ordinary glass structures. In other conditions, textiles in combination with glass can ensure also enhanced acoustic and thermal performances. A multidisciplinary design approach able to properly fit several objectives should be considered. This paper aims at exploring the actual knowledge on glass textiles, with a focus on available tools and research trends, with careful consideration for structural glass facade applications.

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Section: Synclastic Structures Flat Structures Anticlastic Structuresmentioning

confidence: 99%

Textiles and Fabrics for Enhanced Structural Glass Facades: Potentials and Challenges

Bedon

Rajčić

2019

Buildings

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“…These are solid materials that have negative Poisson's ratio [65][66][67]. It means that when they are submitted to the stretch in the longitudinal direction, they expend latterly (get bulky or thicker) and when they are compressed, they are getting narrower in the direction perpendicular to the direction of the compressive force.…”

Section: Auxetic Materialsmentioning

confidence: 99%

Contemporary Personal Ballistic Protection (PBP)

Ciesielska–Wróbel¹

2017

Textiles for Advanced Applications

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The review concerns existing contemporary protective equipment and their components serving against ballistic and non-ballistic threats of different sorts. The main focus, however, is on the personal ballistic protection (PBP) based on textile components and their role in the protective elements. Soft ballistic protections are crucial Soft ballistic protections are crucial elements of PBP, for example in military and law enforcements. Although the subject of PBP was limited in this chapter to soft ballistic protection, other elements, e.g. hard ballistic protection, stab-resistant vests, dual threat, so-called in-conjunction protective elements, modern helmets, were also mentioned in this chapter to demonstrate positioning of the soft ballistic protection and other elements in the global personal protection approach. Apart from it, the chapter contains selected information concerning high-performance polymers and fibres as well as a brief notes about their application in protective panels being basic elements of any protective element. The final remarks concern the most up-to-date approach in relation to ballistic protection, which is immersing high-performance fibres into non-Newtonian liquid substances having the ability of ordering their chemical particles and changing into a high concentration and high segregation lattice under the influence of kinetic energy impact.

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“…With the advent of 3D printing and other precision materials processing techniques, auxetic metamaterials have been developed [7,8]; these materials derive their properties from the designed microarchitectures rather than from properties of the base materials. The literature on auxetic systems is too voluminous to be fairly cited, and so the reader is referred only to the lists of exhaustive references collated in generic review papers on auxetic materials and structures [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] and review papers on specific areas, such as auxetic textiles or fabrics [26][27][28][29], auxetic nanomaterials [30,31], chiral-based auxetics [32], applications of auxetic materials [33,34], and metamaterials with auxetic and negative stiffness inclusions [35], as well as monographs [36][37][38], across the field of auxetics. It suffices to mention that while the Poisson's ratio of anisotropic materials has no bounds, i.e., −∞ < v < ∞ [39,40], in the case of isotropic materials the bounds of Poisson's ratio are −1 ≤ v ≤ 1 for two-dimensional systems and −1 ≤ v ≤ 1/2 for three-dimensional systems, i.e.,…”

Section: Introductionmentioning

confidence: 99%

An Auxetic System Based on Interconnected Y-Elements Inspired by Islamic Geometric Patterns

Lim

2021

Symmetry

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A 2D mechanical metamaterial exhibiting perfectly auxetic behavior, i.e., Poisson’s ratio of , is proposed in this paper drawing upon inspiration from an Islamic star formed by circumferential arrangement of eight squares, such as the one found at the exterior of the Ghiyathiyya Madrasa in Khargird, Iran (built 1438–1444 AD). Each unit of the metamaterial consists of eight pairs of pin-jointed Y-shaped rigid elements, whereby every pair of Y-elements is elastically restrained by a spiral spring. Upon intermediate stretching, each metamaterial unit resembles the north dome of Jameh Mosque, Iran (built 1087–1088 AD), until the attainment of the fully opened configuration, which resembles a structure in Agra, India, near the Taj Mahal. Both infinitesimal and finite deformation models of the effective Young’s modulus for the metamaterial structure were established using strain energy approach in terms of the spiral spring stiffness and geometrical parameters, with assumptions to preserve the eight-fold symmetricity of every metamaterial unit. Results indicate that the prescription of strain raises the effective Young’s modulus in an exponential manner until full extension is attained. This metamaterial is useful for applications where the overall shape of the structure must be conserved in spite of uniaxial application of load, and where deformation is permitted under limited range, which is quickly arrested as the deformation progresses.

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Auxetic Textile Materials - A review

Cited by 22 publications

References 54 publications

Textiles and Fabrics for Enhanced Structural Glass Facades: Potentials and Challenges

Textiles and Fabrics for Enhanced Structural Glass Facades: Potentials and Challenges

Contemporary Personal Ballistic Protection (PBP)

An Auxetic System Based on Interconnected Y-Elements Inspired by Islamic Geometric Patterns

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