Development of novel auxetic structures from braided composite rods for structural applications

P. Subramani, S. Rana, Daniel V. Oliveira, Raul Fangueiro

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Auxetic materials are a class of materials that expand transversely when stretched longitudinally. Recently, auxetic materials are gaining special interest in technical sectors mainly due to their attractive mechanical behavior. This paper reports, for the first time, the development of auxetic structures from composite materials and the characterization of their auxetic as well as mechanical properties. The auxetic structures were developed by varying their geometry using core reinforced braided composite rods containing glass fibres for axial reinforcement, polyester filaments for braided structure and epoxy resin as matrix. The auxetic behavior of the structures was studied in a tensile testing machine using an image-based tracking method. The auxetic behavior and the tensile characteristics of the structure depends strongly on the initial geometric configuration of the structures. The Poisson's ratio measured from the structures tested are in the range of -0.30 to -5.15.

Original languageEnglish
Title of host publication16th European Conference on Composite Materials, ECCM 2014
Number of pages8
ISBN (Electronic)9780000000002
Publication statusPublished - 2014
Externally publishedYes
Event16th European Conference on Composite Materials - Seville, Spain
Duration: 22 Jun 201426 Jun 2014
Conference number: 16

Conference

Conference16th European Conference on Composite Materials
Abbreviated titleECCM 2014
CountrySpain
CitySeville
Period22/06/1426/06/14

Fingerprint

Composite materials
Epoxy Resins
Polyesters
Tensile testing
Poisson ratio
Epoxy resins
Glass fibers
Reinforcement
Mechanical properties
Geometry
fiberglass

Cite this

Subramani, P., Rana, S., Oliveira, D. V., & Fangueiro, R. (2014). Development of novel auxetic structures from braided composite rods for structural applications. In 16th European Conference on Composite Materials, ECCM 2014 [1034]
Subramani, P. ; Rana, S. ; Oliveira, Daniel V. ; Fangueiro, Raul. / Development of novel auxetic structures from braided composite rods for structural applications. 16th European Conference on Composite Materials, ECCM 2014. 2014.
@inproceedings{d0760cb8a5a341d6a8cfc6e71cdc0d83,
title = "Development of novel auxetic structures from braided composite rods for structural applications",
abstract = "Auxetic materials are a class of materials that expand transversely when stretched longitudinally. Recently, auxetic materials are gaining special interest in technical sectors mainly due to their attractive mechanical behavior. This paper reports, for the first time, the development of auxetic structures from composite materials and the characterization of their auxetic as well as mechanical properties. The auxetic structures were developed by varying their geometry using core reinforced braided composite rods containing glass fibres for axial reinforcement, polyester filaments for braided structure and epoxy resin as matrix. The auxetic behavior of the structures was studied in a tensile testing machine using an image-based tracking method. The auxetic behavior and the tensile characteristics of the structure depends strongly on the initial geometric configuration of the structures. The Poisson's ratio measured from the structures tested are in the range of -0.30 to -5.15.",
keywords = "Auxetic structures, Image-based tracking method, Mechanical properties, Poisson's ratio",
author = "P. Subramani and S. Rana and Oliveira, {Daniel V.} and Raul Fangueiro",
year = "2014",
language = "English",
booktitle = "16th European Conference on Composite Materials, ECCM 2014",

}

Subramani, P, Rana, S, Oliveira, DV & Fangueiro, R 2014, Development of novel auxetic structures from braided composite rods for structural applications. in 16th European Conference on Composite Materials, ECCM 2014., 1034, 16th European Conference on Composite Materials, Seville, Spain, 22/06/14.

Development of novel auxetic structures from braided composite rods for structural applications. / Subramani, P.; Rana, S.; Oliveira, Daniel V.; Fangueiro, Raul.

16th European Conference on Composite Materials, ECCM 2014. 2014. 1034.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Development of novel auxetic structures from braided composite rods for structural applications

AU - Subramani, P.

AU - Rana, S.

AU - Oliveira, Daniel V.

AU - Fangueiro, Raul

PY - 2014

Y1 - 2014

N2 - Auxetic materials are a class of materials that expand transversely when stretched longitudinally. Recently, auxetic materials are gaining special interest in technical sectors mainly due to their attractive mechanical behavior. This paper reports, for the first time, the development of auxetic structures from composite materials and the characterization of their auxetic as well as mechanical properties. The auxetic structures were developed by varying their geometry using core reinforced braided composite rods containing glass fibres for axial reinforcement, polyester filaments for braided structure and epoxy resin as matrix. The auxetic behavior of the structures was studied in a tensile testing machine using an image-based tracking method. The auxetic behavior and the tensile characteristics of the structure depends strongly on the initial geometric configuration of the structures. The Poisson's ratio measured from the structures tested are in the range of -0.30 to -5.15.

AB - Auxetic materials are a class of materials that expand transversely when stretched longitudinally. Recently, auxetic materials are gaining special interest in technical sectors mainly due to their attractive mechanical behavior. This paper reports, for the first time, the development of auxetic structures from composite materials and the characterization of their auxetic as well as mechanical properties. The auxetic structures were developed by varying their geometry using core reinforced braided composite rods containing glass fibres for axial reinforcement, polyester filaments for braided structure and epoxy resin as matrix. The auxetic behavior of the structures was studied in a tensile testing machine using an image-based tracking method. The auxetic behavior and the tensile characteristics of the structure depends strongly on the initial geometric configuration of the structures. The Poisson's ratio measured from the structures tested are in the range of -0.30 to -5.15.

KW - Auxetic structures

KW - Image-based tracking method

KW - Mechanical properties

KW - Poisson's ratio

UR - http://www.scopus.com/inward/record.url?scp=84915819130&partnerID=8YFLogxK

UR - http://www.eccm16.org/cgi.hrb?idexp=R3RAH

M3 - Conference contribution

AN - SCOPUS:84915819130

BT - 16th European Conference on Composite Materials, ECCM 2014

ER -

Subramani P, Rana S, Oliveira DV, Fangueiro R. Development of novel auxetic structures from braided composite rods for structural applications. In 16th European Conference on Composite Materials, ECCM 2014. 2014. 1034