Experimental and theoretical assessment of flexural properties of hybrid natural fibre composites

Durai Prabhakaran Raghavalu Thirumalai, Helmuth Langmaack Toftegaard, Christen Malte Markussen, Bo Madsen

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

The concept of hybridization of natural fibre composites with synthetic fibres is attracting increasing scientific attention. The present study addresses the flexural properties of hybrid flax/glass/epoxy composites to demonstrate the potential benefits of hybridization. The study covers both experimental and theoretical assessments. Composite laminates with different hybrid fibre mixing ratios and different layer configurations were manufactured, and their volumetric composition and flexural properties were measured. The relationship between volume fractions in the composites is shown to be well predicted as a function of the hybrid fibre mixing ratio. The flexural modulus of the composites is theoretically assessed by using micromechanical models and laminate theory. The model predictions are compared with the experimentally determined flexural properties. Both approaches show that the flexural modulus of the composites is consistently increased when the flax fibre fabrics are replaced by glass fibre fabrics from the inner layers to the outer layers. The observed deviations between the experimental and theoretical values are explained by the simplifying model assumptions applied for the configuration of the composites, in particular the flax fibre composites. This needs to be addressed in further work.
Original languageEnglish
JournalActa Mechanica
Volume225
Issue number10
Pages (from-to)2775-2782
ISSN0001-5970
DOIs
Publication statusPublished - 2014
Event3rd Asian Conference on Mechanics of Functional Materials and Structures (ACMFMS 2012) - Indian Institute of Technology Delhi, New Delhi, India
Duration: 5 Dec 20128 Dec 2012

Conference

Conference3rd Asian Conference on Mechanics of Functional Materials and Structures (ACMFMS 2012)
LocationIndian Institute of Technology Delhi
CountryIndia
CityNew Delhi
Period05/12/201208/12/2012

Cite this

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title = "Experimental and theoretical assessment of flexural properties of hybrid natural fibre composites",
abstract = "The concept of hybridization of natural fibre composites with synthetic fibres is attracting increasing scientific attention. The present study addresses the flexural properties of hybrid flax/glass/epoxy composites to demonstrate the potential benefits of hybridization. The study covers both experimental and theoretical assessments. Composite laminates with different hybrid fibre mixing ratios and different layer configurations were manufactured, and their volumetric composition and flexural properties were measured. The relationship between volume fractions in the composites is shown to be well predicted as a function of the hybrid fibre mixing ratio. The flexural modulus of the composites is theoretically assessed by using micromechanical models and laminate theory. The model predictions are compared with the experimentally determined flexural properties. Both approaches show that the flexural modulus of the composites is consistently increased when the flax fibre fabrics are replaced by glass fibre fabrics from the inner layers to the outer layers. The observed deviations between the experimental and theoretical values are explained by the simplifying model assumptions applied for the configuration of the composites, in particular the flax fibre composites. This needs to be addressed in further work.",
author = "{Raghavalu Thirumalai}, {Durai Prabhakaran} and Toftegaard, {Helmuth Langmaack} and Markussen, {Christen Malte} and Bo Madsen",
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language = "English",
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journal = "Acta Mechanica",
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Experimental and theoretical assessment of flexural properties of hybrid natural fibre composites. / Raghavalu Thirumalai, Durai Prabhakaran; Toftegaard, Helmuth Langmaack; Markussen, Christen Malte; Madsen, Bo.

In: Acta Mechanica, Vol. 225, No. 10, 2014, p. 2775-2782.

Research output: Contribution to journalConference articleResearchpeer-review

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T1 - Experimental and theoretical assessment of flexural properties of hybrid natural fibre composites

AU - Raghavalu Thirumalai, Durai Prabhakaran

AU - Toftegaard, Helmuth Langmaack

AU - Markussen, Christen Malte

AU - Madsen, Bo

PY - 2014

Y1 - 2014

N2 - The concept of hybridization of natural fibre composites with synthetic fibres is attracting increasing scientific attention. The present study addresses the flexural properties of hybrid flax/glass/epoxy composites to demonstrate the potential benefits of hybridization. The study covers both experimental and theoretical assessments. Composite laminates with different hybrid fibre mixing ratios and different layer configurations were manufactured, and their volumetric composition and flexural properties were measured. The relationship between volume fractions in the composites is shown to be well predicted as a function of the hybrid fibre mixing ratio. The flexural modulus of the composites is theoretically assessed by using micromechanical models and laminate theory. The model predictions are compared with the experimentally determined flexural properties. Both approaches show that the flexural modulus of the composites is consistently increased when the flax fibre fabrics are replaced by glass fibre fabrics from the inner layers to the outer layers. The observed deviations between the experimental and theoretical values are explained by the simplifying model assumptions applied for the configuration of the composites, in particular the flax fibre composites. This needs to be addressed in further work.

AB - The concept of hybridization of natural fibre composites with synthetic fibres is attracting increasing scientific attention. The present study addresses the flexural properties of hybrid flax/glass/epoxy composites to demonstrate the potential benefits of hybridization. The study covers both experimental and theoretical assessments. Composite laminates with different hybrid fibre mixing ratios and different layer configurations were manufactured, and their volumetric composition and flexural properties were measured. The relationship between volume fractions in the composites is shown to be well predicted as a function of the hybrid fibre mixing ratio. The flexural modulus of the composites is theoretically assessed by using micromechanical models and laminate theory. The model predictions are compared with the experimentally determined flexural properties. Both approaches show that the flexural modulus of the composites is consistently increased when the flax fibre fabrics are replaced by glass fibre fabrics from the inner layers to the outer layers. The observed deviations between the experimental and theoretical values are explained by the simplifying model assumptions applied for the configuration of the composites, in particular the flax fibre composites. This needs to be addressed in further work.

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