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Title
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Modal analysis of a composite automotive component using fibre Bragg grating sensors embedded via resin transfer moulding
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Author
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Abstract
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| Over the last few years, the use of fibre optic sensors has been constantly growing in many industrial applications. In the aerospace and automotive field, for instance, optical fibres seems to be very promising for sensing composite components. Fibre sensors reduced dimensions, in fact, makes them suitable to be embedded in composite materials during the manufacturing process. Once embedded, optical fibres can be used as in-situ sensors, for example, for monitoring components rather difficult to access with other sensing systems. In this study, 2 optical fibres carrying a total of 12 fibre Bragg grating (FBG) sensors are used to perform dynamic strain measurements in a composite car component. The component is a carbon fibre reinforced control car arm manufactured via a Resin Transfer Moulding (RTM) technique. During the embedding of the fibres, the gratings are positioned in order to be able to individually measure strain components induced by both bending and torsion. The composite component is successively tested by applying an external excitation through a shaker and by measuring the dynamic structural response via the FBG sensors. For sake of comparison, reference measurements are done by means of a Laser Doppler Vibrometer (LDV). The natural frequencies estimated from the FBG measurements are in good agreement with those obtained with the LDV. In addition, the FBG sensors are able to better show the coupling between bending and torsion. |
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Language
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English
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Source (journal)
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OPTICAL MEASUREMENT TECHNIQUES FOR STRUCTURES & SYSTEMS III
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Source (book)
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6th International Conference on Optical Measurement Techniques for, Structures and Systems III (OPTIMESS2015), APR 08-09, 2015, Univ Antwerp, Univ Antwerp, Antwerp, BELGIUM
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Publication
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Maastricht
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Shaker publishing bv
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2016
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ISBN
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978-90-423-0439-0
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978-90-423-0439-0
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Volume/pages
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(2016)
, p. 161-169
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ISI
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000373413300016
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