High-performance composite with negative Poisson’s ratio

Steffens, Fernanda; Oliveira, Fernando Ribeiro; Mota, Carlos; Fangueiro, Raúl

doi:10.1557/jmr.2017.340

Cited by 19 publications

(17 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Large NPRs (<−1) are possible, depending on the structure and yarns employed [235]. Auxetic foldable weft-knitted textiles have also been used as the reinforcement in polymeric composite materials [236]. Developments of auxetic weft-knitted fabrics will find a wide variety of potential applications in different fields, such as PPE for sportswear and headwear, but more research needs to be undertaken to explore these potential applications further [29].…”

Section: Fabricating Auxetic Textilesmentioning

confidence: 99%

Review of Auxetic Materials for Sports Applications: Expanding Options in Comfort and Protection

Duncan

Shepherd

Moroney³

et al. 2018

Applied Sciences

239

151

View full text Add to dashboard Cite

Following high profile, life changing long term mental illnesses and fatalities in sports such as skiing, cricket and American football-sports injuries feature regularly in national and international news. A mismatch between equipment certification tests, user expectations and infield falls and collisions is thought to affect risk perception, increasing the prevalence and severity of injuries. Auxetic foams, structures and textiles have been suggested for application to sporting goods, particularly protective equipment, due to their unique form-fitting deformation and curvature, high energy absorption and high indentation resistance. The purpose of this critical review is to communicate how auxetics could be useful to sports equipment (with a focus on injury prevention), and clearly lay out the steps required to realise their expected benefits. Initial overviews of auxetic materials and sporting protective equipment are followed by a description of common auxetic materials and structures, and how to produce them in foams, textiles and Additively Manufactured structures. Beneficial characteristics, limitations and commercial prospects are discussed, leading to a consideration of possible further work required to realise potential uses (such as in personal protective equipment and highly conformable garments).

show abstract

Section: Fabricating Auxetic Textilesmentioning

confidence: 99%

Review of Auxetic Materials for Sports Applications: Expanding Options in Comfort and Protection

Duncan

Shepherd

Moroney³

et al. 2018

Applied Sciences

239

151

View full text Add to dashboard Cite

show abstract

“…Mechanical and physical properties of the p-AR and PA fibers used in this study are presented in Table 1. 19…”

Section: Methodsmentioning

confidence: 99%

“…Where xn and yn are the distances between the points marked in the walewise and coursewise directions in each deformation step, i.e., 1 mm. 19 The initial intervals between the reference points are x0 and y0. Values for Ɛ x and Ɛ y were determined and the Poisson’s ratio calculated through the relation between the deformation in the walewise and coursewise directions in each deformation step using equation (3), for three samples in each composition group.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Energy absorption from composite reinforced with high performance auxetic textile structure

Steffens

Oliveira

Fangueiro

2020

Journal of Composite Materials

Self Cite

View full text Add to dashboard Cite

The objective of this study is to analyze the impact behavior on the basis of energy approach of weft knitted structures, namely a jersey composite and an auxetic composite using high performance yarns. Weft knitted fabrics were produced with the same structural and machine parameters, using 100% para-aramid and hybrid (47% para-aramid and 53% polyamide) structure. Composite fabrication was achieved through hand lay-up using epoxy resin. Negative Poisson ratio of the reinforcing auxetic fabric was transferred from the fabric to the composite developed. Results obtained by drop weight dart impact test show that the impact experiment with different impact loads confirmed the auxetic composites, regardless de material composition, have an increase in the total energy absorption compared to jersey reinforced composite, approximately 2.5 and 4 times more for para-aramid and hybrid composite, respectively. Auxetic composites developed within this work present great potential for applications in different areas, mainly where energy absorption is a key factor to be considered, such as in protection, sports among others.

show abstract

“…Textiles utilising two-dimensionally auxetic fabrics have been produced [150][151][152]. 3D auxetic textiles have been developed for composite reinforcement applications [153,154] using warp and weft yarns [155] with stitch yarns [156] and auxetic fibres [157].…”

Section: Other Auxetic Materialsmentioning

confidence: 99%

Auxetic foams for sports applications

Duncan¹

View full text Add to dashboard Cite

Bell helped extend the research techniques surrounding polymer chemistry. Advice, support and equipment access was provided by Jamie Boulding who operates the Instron devices and ovens used for foam conversion at Sheffield Hallam. Help was also provided in the engineering workshops by Tim O'Hara, Will Tierney, Robin Sykes, Jeremy Bladen and Simon Apps. Terry Senior from the Centre of Sports Engineering Research helped with the design of moulds and experiments, and the whole of the Equipment Mechanics Research Theme gave advice and support throughout. The Faculty of Arts, Computing, Engineering and Science provided funding though their Graduate Teaching Associate scheme, along with valuable training and the chance to share research with students.

show abstract

High-performance composite with negative Poisson’s ratio

Abstract: Abstract

Cited by 19 publications

References 22 publications

Review of Auxetic Materials for Sports Applications: Expanding Options in Comfort and Protection

Review of Auxetic Materials for Sports Applications: Expanding Options in Comfort and Protection

Energy absorption from composite reinforced with high performance auxetic textile structure

Auxetic foams for sports applications

Contact Info

Product

Resources

About