ESTIMATION OF ANISOTROPIC ELASTIC PROPERTIES OF CARBON FIBERS USING NANOINDENTATION

Understanding the mechanical behavior of carbon fiber reinforced polymers requires knowledge on the deformation behavior of carbon fibers, they are highly anisotropic and heterogeneous. Nanoindentation is an efficient method for determining the mechanical properties in small volumes of materials. Fo...

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Main Authors: Thimmappa Shetty Guruprasad, Vincent Keryvin, Alain Bourmaud
Format: Article
Language:English
Published: CTU Central Library 2020-06-01
Series:Acta Polytechnica CTU Proceedings
Subjects:
Online Access:https://ojs.cvut.cz/ojs/index.php/APP/article/view/6699
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author Thimmappa Shetty Guruprasad
Vincent Keryvin
Alain Bourmaud
author_facet Thimmappa Shetty Guruprasad
Vincent Keryvin
Alain Bourmaud
author_sort Thimmappa Shetty Guruprasad
collection DOAJ
description Understanding the mechanical behavior of carbon fiber reinforced polymers requires knowledge on the deformation behavior of carbon fibers, they are highly anisotropic and heterogeneous. Nanoindentation is an efficient method for determining the mechanical properties in small volumes of materials. For isotropic materials, a single nanoindentation test can evaluate an elastic properties of the material. But for anisotropic material, the difficulty increases since measured indentation modulus depends on five elastic parameters (El,Et,Glt, νlt,and νtt) of the material. Nanoindentation experiments are performed on carbon fibers orientated between 0° to 90° at ten different orientations to the fiber axis. From theoretical models given by Vlassak et al. and Delafargue and Ulm, the elastic constants are predicted numerically by comparing the results of indentation modulus versus orientation angle with the experiments.
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spelling doaj.art-486bdc65c002412dbfa165e79a3568932022-12-22T00:32:31ZengCTU Central LibraryActa Polytechnica CTU Proceedings2336-53822020-06-0127010711110.14311/APP.2020.27.01075229ESTIMATION OF ANISOTROPIC ELASTIC PROPERTIES OF CARBON FIBERS USING NANOINDENTATIONThimmappa Shetty Guruprasad0Vincent Keryvin1Alain Bourmaud2University of Bretagne Sud, UMR CNRS 6027, IRDL, 27 rue Armand Guillemot BP 92116, 56321 Lorient, FranceUniversity of Bretagne Sud, UMR CNRS 6027, IRDL, 27 rue Armand Guillemot BP 92116, 56321 Lorient, FranceUniversity of Bretagne Sud, UMR CNRS 6027, IRDL, 27 rue Armand Guillemot BP 92116, 56321 Lorient, FranceUnderstanding the mechanical behavior of carbon fiber reinforced polymers requires knowledge on the deformation behavior of carbon fibers, they are highly anisotropic and heterogeneous. Nanoindentation is an efficient method for determining the mechanical properties in small volumes of materials. For isotropic materials, a single nanoindentation test can evaluate an elastic properties of the material. But for anisotropic material, the difficulty increases since measured indentation modulus depends on five elastic parameters (El,Et,Glt, νlt,and νtt) of the material. Nanoindentation experiments are performed on carbon fibers orientated between 0° to 90° at ten different orientations to the fiber axis. From theoretical models given by Vlassak et al. and Delafargue and Ulm, the elastic constants are predicted numerically by comparing the results of indentation modulus versus orientation angle with the experiments.https://ojs.cvut.cz/ojs/index.php/APP/article/view/6699anisotropy, carbon fibers, nanoindentation
spellingShingle Thimmappa Shetty Guruprasad
Vincent Keryvin
Alain Bourmaud
ESTIMATION OF ANISOTROPIC ELASTIC PROPERTIES OF CARBON FIBERS USING NANOINDENTATION
Acta Polytechnica CTU Proceedings
anisotropy, carbon fibers, nanoindentation
title ESTIMATION OF ANISOTROPIC ELASTIC PROPERTIES OF CARBON FIBERS USING NANOINDENTATION
title_full ESTIMATION OF ANISOTROPIC ELASTIC PROPERTIES OF CARBON FIBERS USING NANOINDENTATION
title_fullStr ESTIMATION OF ANISOTROPIC ELASTIC PROPERTIES OF CARBON FIBERS USING NANOINDENTATION
title_full_unstemmed ESTIMATION OF ANISOTROPIC ELASTIC PROPERTIES OF CARBON FIBERS USING NANOINDENTATION
title_short ESTIMATION OF ANISOTROPIC ELASTIC PROPERTIES OF CARBON FIBERS USING NANOINDENTATION
title_sort estimation of anisotropic elastic properties of carbon fibers using nanoindentation
topic anisotropy, carbon fibers, nanoindentation
url https://ojs.cvut.cz/ojs/index.php/APP/article/view/6699
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