Hexachiral truss-core with twisted hemp yarns: out-of-plane shear properties

G. Cicala; G. Recca; L. Oliveri; Y. Perikleous; FL Scarpa; C Lira; A Lorato; D. J. Grube; G. Ziegmann

doi:10.1016/j.compstruct.2012.05.020

Hexachiral truss-core with twisted hemp yarns: out-of-plane shear properties

G. Cicala, G. Recca, L. Oliveri, Y. Perikleous, FL Scarpa, C Lira, A Lorato, D. J. Grube, G. Ziegmann

Research output: Contribution to journal › Article (Academic Journal) › peer-review

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Abstract

This work describes a truss-core structure made of hemp/epoxy biocomposite, based on a topology with auxetic (negative Poisson's ratio) characteristics. Epoxy-based composites with 25 % wt of hemp yarns have been manufactured and characterised with tensile and flexural tests. Truss-core hexagonal chiral panels with the biocomposite core have been produced using a Resin Transfer Molding technique. The panels have been subjected to standard transverse shear tests, and their properties predicted with a Finite Element nonlinear modeling. The results show that the hexachiral biocomposite truss core exhibits specific shear modulus and strength significantly higher compared to the ones observed in previous demonstrators made of polymeric core.

Translated title of the contribution	Hexachiral truss-core with twisted hemp yarns: out-of-plane shear properties
Original language	English
Journal	Composite Structures
DOIs	https://doi.org/10.1016/j.compstruct.2012.05.020
Publication status	Published - 2012

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title = "Hexachiral truss-core with twisted hemp yarns: out-of-plane shear properties",

abstract = "This work describes a truss-core structure made of hemp/epoxy biocomposite, based on a topology with auxetic (negative Poisson's ratio) characteristics. Epoxy-based composites with 25 % wt of hemp yarns have been manufactured and characterised with tensile and flexural tests. Truss-core hexagonal chiral panels with the biocomposite core have been produced using a Resin Transfer Molding technique. The panels have been subjected to standard transverse shear tests, and their properties predicted with a Finite Element nonlinear modeling. The results show that the hexachiral biocomposite truss core exhibits specific shear modulus and strength significantly higher compared to the ones observed in previous demonstrators made of polymeric core.",

author = "G. Cicala and G. Recca and L. Oliveri and Y. Perikleous and FL Scarpa and C Lira and A Lorato and Grube, {D. J.} and G. Ziegmann",

year = "2012",

doi = "10.1016/j.compstruct.2012.05.020",

language = "English",

journal = "Composite Structures",

issn = "0263-8223",

publisher = "Elsevier",

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TY - JOUR

T1 - Hexachiral truss-core with twisted hemp yarns: out-of-plane shear properties

AU - Cicala, G.

AU - Recca, G.

AU - Oliveri, L.

AU - Perikleous, Y.

AU - Scarpa, FL

AU - Lira, C

AU - Lorato, A

AU - Grube, D. J.

AU - Ziegmann, G.

PY - 2012

Y1 - 2012

N2 - This work describes a truss-core structure made of hemp/epoxy biocomposite, based on a topology with auxetic (negative Poisson's ratio) characteristics. Epoxy-based composites with 25 % wt of hemp yarns have been manufactured and characterised with tensile and flexural tests. Truss-core hexagonal chiral panels with the biocomposite core have been produced using a Resin Transfer Molding technique. The panels have been subjected to standard transverse shear tests, and their properties predicted with a Finite Element nonlinear modeling. The results show that the hexachiral biocomposite truss core exhibits specific shear modulus and strength significantly higher compared to the ones observed in previous demonstrators made of polymeric core.

AB - This work describes a truss-core structure made of hemp/epoxy biocomposite, based on a topology with auxetic (negative Poisson's ratio) characteristics. Epoxy-based composites with 25 % wt of hemp yarns have been manufactured and characterised with tensile and flexural tests. Truss-core hexagonal chiral panels with the biocomposite core have been produced using a Resin Transfer Molding technique. The panels have been subjected to standard transverse shear tests, and their properties predicted with a Finite Element nonlinear modeling. The results show that the hexachiral biocomposite truss core exhibits specific shear modulus and strength significantly higher compared to the ones observed in previous demonstrators made of polymeric core.

U2 - 10.1016/j.compstruct.2012.05.020

DO - 10.1016/j.compstruct.2012.05.020

M3 - Article (Academic Journal)

SN - 0263-8223

JO - Composite Structures

JF - Composite Structures

ER -

Hexachiral truss-core with twisted hemp yarns: out-of-plane shear properties

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