Manufacture and characterisation of thin flat and curved auxetic foam sheets

Alderson, K. L.; Alderson, Andrew; Ravirala, N.; Simkins, V. R.; Davies, Philip

doi:10.1002/pssb.201084215

Cited by 56 publications

(43 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To exploit further the benefits of auxetic foams, very recently, heterogeneous strain distributions due to a complex microstructure (107) and fabrication of flat and curved auxetic foam sheets were reported by the authors in Ref. (108). Also, some other properties of auxetic PU foam such as the effect of solvents were reported by the authors in Ref.…”

Section: Auxetic Polymeric Foamsmentioning

confidence: 99%

Three decades of auxetic polymers: a review

Bhullar

2015

E-Polymers

View full text Add to dashboard Cite

Developments in design and technology in the engineering and medical fields necessitate the use of smart and high-performance materials to meet higher engineering specifications. The general requirements of such materials include a combination of high stiffness and strength with significant weight savings, resistance to corrosion, chemical resistance, low maintenance, and reduced costs. Over the last three decades, it has been demonstrated that auxetic materials offer a huge potential for the fields of engineering, natural sciences, and biomedical engineering, and for many other industries, including the aerospace and defense industries, through their unique deformation mechanism and measured enhancements in mechanical properties. To meet future engineering challenges, auxetic materials are increasingly being recognized as integral components of smart and advanced materials. Although materials with a negative Poisson's ratio have been known since the early 1900s, they did not capture researchers' attention until the late 1980s. Since 1991, these materials have been known as auxetic materials. Since then, their benefits and applications have been expanded to all major classes of materials such as metals, ceramics, polymers, and composites, and they are also now being used in engineering applications. The goal of this review was to present the development of auxetic polymers, which were first fabricated in the form of polyurethane foam approximately three decades ago and are now used in the fabrication of non-woven nano/ micropolymeric structures. This review could provide useful information for the future development of auxetic polymers.

show abstract

Section: Auxetic Polymeric Foamsmentioning

confidence: 99%

Three decades of auxetic polymers: a review

Bhullar

2015

E-Polymers

View full text Add to dashboard Cite

show abstract

“…Although there are various modifications introducing some improvements like continuous processes , as opposed to batch processes, manufacturing foams with curved or arbitrary shape which properties can be tailored or even considering auxetic foams as shape memory materials, which can transform to and from auxetic state , all of them are based on the principle that a deformed foam specimen subjected to compression and treated with a material softening agent will exhibit permanent deformation of ribs leading to creation of re‐entrant cell structures responsible for the auxetic behavior.…”

Section: Auxetic Foams Manufacturingmentioning

confidence: 99%

Tests of polyurethane foams with negative Poisson's ratio

Lisiecki

Błażejewicz

Kłysz

et al. 2013

Physica Status Solidi (b)

View full text Add to dashboard Cite

Auxetic materials exhibit counterintuitive and interesting properties, which can be utilized to develop new families of products, which can meet sophisticated needs. Study presented within this paper is focused on manufacturing and testing auxetic polyurethane foams for potential introduction for seats in military helicopters. Firstly, a manufacturing process was developed which benefits from the well‐known methods of processing conventional foams and allows preparing necessary test specimens for further tests. Secondly, a series of static and dynamic tests was performed during which the market available conventional foams used in transport are compared with processed auxetic foams.

show abstract

“…Since the publication of Lakes' seminal paper, different types of manufacturing processes have been designed to produce NPR open cell foams [17][18][19][20] . A shape memory effect can be also induced in negative Poisson's ratio foam specimens by applying a specific temperature profile, causing the dimensions of the NPR foam to return to their original values (conversion to returned phase).…”

Section: Introductionmentioning

confidence: 99%

Blocked Shape Memory Effect in Negative Poisson’s Ratio Polymer Metamaterials

Boba

Bianchi

McCombe

et al. 2016

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

We describe a new class of negative Poisson's ratio (NPR) open cell PU-PE foams produced by blocking the shape memory effect in the polymer. Contrary to classical NPR open cell thermoset and thermoplastic foams that return to their auxetic phase after reheating (and therefore limit their use in technological applications), this new class of cellular solids has a permanent negative Poisson's ratio behavior, generated through multiple shape memory (mSM) treatments that lead to a fixity of the topology of the cell foam. The mSM-NPR foams have Poisson's ratio values similar to the auxetic foams prior their return to the conventional phase, but compressive stress-strain curves similar to the ones of conventional foams. The results show that by manipulating the shape memory effect in polymer microstructures it is possible to obtain new classes of materials with unusual deformation mechanisms.2

show abstract

Manufacture and characterisation of thin flat and curved auxetic foam sheets

Cited by 56 publications

References 54 publications

Three decades of auxetic polymers: a review

Three decades of auxetic polymers: a review

Tests of polyurethane foams with negative Poisson's ratio

Blocked Shape Memory Effect in Negative Poisson’s Ratio Polymer Metamaterials

Contact Info

Product

Resources

About