Measuring strains through the thickness of a composite structural specimen subjected to bending

M. Mulle; R. Zitoune; F. Collombet; L. Robert; Y. H. Grunevald

doi:10.1007/s11340-008-9209-2

Measuring strains through the thickness of a composite structural specimen subjected to bending

M. Mulle^*, R. Zitoune, F. Collombet, L. Robert, Y. H. Grunevald

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

This study concerns the central reinforced zone of a composite structural specimen. In order to estimate the strain distribution during a series of three and four-point bending tests, several optical fiber Bragg grating sensors have been embedded in various levels of the ply stack. Simultaneously, surface strain field measurements by 3-D digital image correlation are undertaken. Both techniques show a general linear distribution of longitudinal strains through the thickness of the thick zone but values are slightly different. A numerical model is developed and a test-calculation dialogue is carried out. The complementary information given by the two optical techniques for in-core and surface measurements reveals the importance of considering structural and edge effects.

Original language	English (US)
Pages (from-to)	877-880
Number of pages	4
Journal	Experimental Mechanics
Volume	49
Issue number	6
DOIs	https://doi.org/10.1007/s11340-008-9209-2
State	Published - Dec 2009
Externally published	Yes

Keywords

3-D digital image correlation
Bending tests
Composites
Fiber Bragg gratings
Finite element analysis

ASJC Scopus subject areas

Aerospace Engineering
Mechanics of Materials
Mechanical Engineering

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10.1007/s11340-008-9209-2

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abstract = "This study concerns the central reinforced zone of a composite structural specimen. In order to estimate the strain distribution during a series of three and four-point bending tests, several optical fiber Bragg grating sensors have been embedded in various levels of the ply stack. Simultaneously, surface strain field measurements by 3-D digital image correlation are undertaken. Both techniques show a general linear distribution of longitudinal strains through the thickness of the thick zone but values are slightly different. A numerical model is developed and a test-calculation dialogue is carried out. The complementary information given by the two optical techniques for in-core and surface measurements reveals the importance of considering structural and edge effects.",

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AU - Mulle, M.

AU - Zitoune, R.

AU - Collombet, F.

AU - Robert, L.

AU - Grunevald, Y. H.

PY - 2009/12

Y1 - 2009/12

N2 - This study concerns the central reinforced zone of a composite structural specimen. In order to estimate the strain distribution during a series of three and four-point bending tests, several optical fiber Bragg grating sensors have been embedded in various levels of the ply stack. Simultaneously, surface strain field measurements by 3-D digital image correlation are undertaken. Both techniques show a general linear distribution of longitudinal strains through the thickness of the thick zone but values are slightly different. A numerical model is developed and a test-calculation dialogue is carried out. The complementary information given by the two optical techniques for in-core and surface measurements reveals the importance of considering structural and edge effects.

AB - This study concerns the central reinforced zone of a composite structural specimen. In order to estimate the strain distribution during a series of three and four-point bending tests, several optical fiber Bragg grating sensors have been embedded in various levels of the ply stack. Simultaneously, surface strain field measurements by 3-D digital image correlation are undertaken. Both techniques show a general linear distribution of longitudinal strains through the thickness of the thick zone but values are slightly different. A numerical model is developed and a test-calculation dialogue is carried out. The complementary information given by the two optical techniques for in-core and surface measurements reveals the importance of considering structural and edge effects.

KW - 3-D digital image correlation

KW - Bending tests

KW - Composites

KW - Fiber Bragg gratings

KW - Finite element analysis

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JF - Experimental Mechanics

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ER -

Measuring strains through the thickness of a composite structural specimen subjected to bending

Abstract

Keywords

ASJC Scopus subject areas

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