Strain sensing in carbon composite material using embedded Fibre Bragg Grating sensors

Senan Moloney; Michael J. Connelly; Paul A. Butler

doi:10.1117/12.605082

Strain sensing in carbon composite material using embedded Fibre Bragg Grating sensors

Senan Moloney, Michael J. Connelly, Paul A. Butler

Department of Electronics & Computer Engineering

University of Limerick

Research output: Contribution to journal › Conference article › peer-review

Abstract

This paper reports on a fibre Bragg Grating based sensor system, using a Lab VIEW interface, for the measurement of strain, primarily in carbon composite materials. The process of embedding the sensors is outlined, system operation is explained and some sensitivity considerations are addressed. The system was firstly used to interrogate a single fibre Bragg grating that was embedded in a cantilever-type sample of a carbon/epoxy laminate. The accuracy of the system was examined by comparing results with those from a conventional resistive foil strain gauge. A composite "smart" panel was then constructed incorporating an array of four FBG sensors. The panel was subjected to various strain conditions, and sensor readings were used to obtain the resultant distribution of strain within the panel. Results were verified using special modelling software.

Original language	English
Article number	80
Pages (from-to)	645-653
Number of pages	9
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5826
DOIs	https://doi.org/10.1117/12.605082
Publication status	Published - 2005
Event	Opto-Ireland 2005: Optical Sensing and Spectroscopy - Dublin, Ireland Duration: 4 Apr 2005 → 6 Apr 2005

Keywords

Composite material
Fibre Bragg Grating
Lab VIEW
Strain

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10.1117/12.605082

Cite this

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title = "Strain sensing in carbon composite material using embedded Fibre Bragg Grating sensors",

abstract = "This paper reports on a fibre Bragg Grating based sensor system, using a Lab VIEW interface, for the measurement of strain, primarily in carbon composite materials. The process of embedding the sensors is outlined, system operation is explained and some sensitivity considerations are addressed. The system was firstly used to interrogate a single fibre Bragg grating that was embedded in a cantilever-type sample of a carbon/epoxy laminate. The accuracy of the system was examined by comparing results with those from a conventional resistive foil strain gauge. A composite {"}smart{"} panel was then constructed incorporating an array of four FBG sensors. The panel was subjected to various strain conditions, and sensor readings were used to obtain the resultant distribution of strain within the panel. Results were verified using special modelling software.",

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journal = "Proceedings of SPIE - The International Society for Optical Engineering",

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note = "Opto-Ireland 2005: Optical Sensing and Spectroscopy ; Conference date: 04-04-2005 Through 06-04-2005",

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AU - Moloney, Senan

AU - Connelly, Michael J.

AU - Butler, Paul A.

PY - 2005

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N2 - This paper reports on a fibre Bragg Grating based sensor system, using a Lab VIEW interface, for the measurement of strain, primarily in carbon composite materials. The process of embedding the sensors is outlined, system operation is explained and some sensitivity considerations are addressed. The system was firstly used to interrogate a single fibre Bragg grating that was embedded in a cantilever-type sample of a carbon/epoxy laminate. The accuracy of the system was examined by comparing results with those from a conventional resistive foil strain gauge. A composite "smart" panel was then constructed incorporating an array of four FBG sensors. The panel was subjected to various strain conditions, and sensor readings were used to obtain the resultant distribution of strain within the panel. Results were verified using special modelling software.

AB - This paper reports on a fibre Bragg Grating based sensor system, using a Lab VIEW interface, for the measurement of strain, primarily in carbon composite materials. The process of embedding the sensors is outlined, system operation is explained and some sensitivity considerations are addressed. The system was firstly used to interrogate a single fibre Bragg grating that was embedded in a cantilever-type sample of a carbon/epoxy laminate. The accuracy of the system was examined by comparing results with those from a conventional resistive foil strain gauge. A composite "smart" panel was then constructed incorporating an array of four FBG sensors. The panel was subjected to various strain conditions, and sensor readings were used to obtain the resultant distribution of strain within the panel. Results were verified using special modelling software.

KW - Composite material

KW - Fibre Bragg Grating

KW - Lab VIEW

KW - Strain

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T2 - Opto-Ireland 2005: Optical Sensing and Spectroscopy

Y2 - 4 April 2005 through 6 April 2005

ER -

Strain sensing in carbon composite material using embedded Fibre Bragg Grating sensors

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Keywords

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