Preparation of soft composite reinforced with auxetic warp-knitted spacer fabric for stab resistance

Xu, Wanli; Sun, Yaxin; Lin, Hua‐Tay; Wei, Chunyan; Ma, Pibo; Xia, Fenglin

doi:10.1177/0040517519866938

Cited by 16 publications

(7 citation statements)

References 22 publications

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“…Combining the measured values of NPR, conclusions can be drawn from Figure 8(a) that samples with higher NPR value can undergo larger impact load. This is because the samples with better auxetic performance would have denser face structure [31]; therefore, it could have better impact resistance. Energy absorption-deflection curve of composite (1#-4#) is shown in Figure 8(b).…”

Section: Low-velocity Impact Behavior Of Compositementioning

confidence: 99%

Preparation of auxetic warp-knitted spacer fabric impregnated with shear thickening fluid for low-velocity impact resistance

Yan²,

et al. 2020

Journal of Industrial Textiles

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This paper reports the preparation of auxetic warp-knitted spacer fabric impregnated with shear thickening fluid and studied its impact behavior under low-velocity impact loading. The shear thickening fluids have been prepared by mechanically dispersing 12 nm silica particles with weight fraction of 10, 15, 20, and 25% in various carriers (PEG200, PEG400, and PEG600). Rheological results indicate that shear thickening fluid experiences shear thickening transition at a specific shear rate. The critical shear rate reduces, and initial viscosity and maximum viscosity increase with the increase of silica weight fraction. The higher molecular weight of polyethylene glycols can lead to lower critical shear rate. The impact process of composite under impact loading can be divided into three stages. The warp-knitted spacer fabric with different negative Poisson’s ratio has a significant effect on the impact behavior. The warp-knitted spacer fabric with better auxetic performance endows composite better impact resistance, the specific performance is the deformation depth, and energy absorption and peak load increase with the increase of auxetic effect of fabric. The silica weight fraction of shear thickening fluid can increase the energy absorption of composite due to the shear thickening transition of shear thickening fluid. Shear thickening fluid has a synergistic effect with the auxetic warp-knitted spacer fabric on impact resistance of composite. The various carriers have no obvious influence on the overall energy absorption and impact load of composites.

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Section: Low-velocity Impact Behavior Of Compositementioning

confidence: 99%

Preparation of auxetic warp-knitted spacer fabric impregnated with shear thickening fluid for low-velocity impact resistance

Yan²,

et al. 2020

Journal of Industrial Textiles

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“…In the literature, there are many studies on yarn [1,[9][10][11][12][13][14][15][16][17][18][19][20], woven fabric [21][22][23][24][25][26], knitted fabric [8,[27][28][29][30][31][32][33][34][35][36][37], composite [38][39][40][41] production related to low PR or auxetic textile materials. Auxetic fabrics can also be produced with auxetic yarns or conventional yarns.…”

Section: Introductionmentioning

confidence: 99%

“…Auxetic fabrics can also be produced with auxetic yarns or conventional yarns. Researchers changed the yarn properties and/or fabric patterns in literature to achieve low PR values [8,[21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37]. These studies show that the researchers used Re-entrant (zigzag), Rotating, Chiral, Fibril-Nodule, and Foldable mesh structures [2,42,43].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Poisson’s Ratio Measurement Methods: The Extensometer and the Universal Tensile Testing Devices

Tiritoğlu¹,

Tezel²,

Kavuşturan³

2021

Tekstil Ve Konfeksiyon

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Auxetic materials with a negative Poison's ratio (PR) have the potential to meet the demand for different materials, especially technical textiles. Universal Tensile Test (UTT) devices and various experimental setups developed by researchers have been used in PR measurements. This study aims to investigate the PR of knitted fabrics with UTT and extensometer devices comparatively by using the same measurement parameters according to ASTM E132. Knitted fabrics with zigzag and foldable patterns were produced in the study because of their auxetic behaviour. It has been determined that the extensometer device can be used as an alternative to the UTT device for PR measurements. While the PR of foldable fabrics cannot be measured with the UTT device because of the fabrics' folding on themselves, it has been observed that it can be easily measured with the extensometer device thanks to the horizontal axis principle.

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“…Auxetics, are unique materials with negative Poisson's ratio, which means that when stretched, they become thicker perpendicular to the applied force. Due to the specific behavior of auxetic materials under load, in a research by Xu et al (2020) it was revealed that these materials show enhanced properties such as impact resistance, indentation resistance, shear resistance, and energy absorption, compared to positive Poisson's ratio materials. Sun et al (2019) investigated the stab resistance property of auxetic weft knitted fabrics.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the resistance of metal reinforced multi-layer textile structure against penetration of sharp objects

Amirshirzad

Mousazadegan

Ezazshahabi

2020

International Journal of Protective Structures

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One of the common applications of textile protective structures is making barriers against penetration of sharp objects. Multilayer fabrics can absorb energy and are a proper candidate to be used in body armors. In this study, a three-layer textile structure which is reinforced by metal threads has been designed and produced. Metal reinforced layer was woven through a particular weaving system. Force and energy of penetration in each layer and also the three-layer textile structure was measured. The test results revealed that the layer resistance against penetration of sharp objects varied depending on the strucure of each layer. The metal reinforced layer had the highest penetration force and energy. In the three-layer textile structure, the resistance behavior of each layer was observed separately and stepwise. Thus, the force peaks in the three-layer textile structure were related to the peak forces in each layer, and the maximum penetration force of three-layer structure was similar to penetration force of metal-reinforced layer. When putting three layers on each other, the penetration energy has increased, and the designed multi-layer textile structure has performed efficiently in absorbing the penetration energy of sharp objects. Due to the stepwise resistance of three-layered textile structure, its obtained penetration energy, was divided into two energy values of external layer and both middle and inner layers. Thus, accumulation of penetration energy of single external, middle and inner layers was in good agreement with penetration energy of three-layer textile structure.

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Preparation of soft composite reinforced with auxetic warp-knitted spacer fabric for stab resistance

Cited by 16 publications

References 22 publications

Preparation of auxetic warp-knitted spacer fabric impregnated with shear thickening fluid for low-velocity impact resistance

Preparation of auxetic warp-knitted spacer fabric impregnated with shear thickening fluid for low-velocity impact resistance

Comparison of Poisson’s Ratio Measurement Methods: The Extensometer and the Universal Tensile Testing Devices

Evaluating the resistance of metal reinforced multi-layer textile structure against penetration of sharp objects

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