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Content archived on 2024-04-15

Intelligent composites containing measuring fibre optic networks for continuous self diagnosis

Objective


This work is involved with designing fibre optic sensors for use in composite structures. Achievements made so far are:
definition implementation and test of the sensor;
definition and implementation of real time network for up to seven sensors;
simultaneous measurement of strain and temperature when using one sensor;
finding, embedding and utilising of fibre structure that does not degrade the composite;
strain measurement with a two sensors network inside the composite and four sensors bonded on the composite.
THE ABILITY TO MONITOR THE CHANGES IN TEMPERATURE AND STRAIN FIELDS WITHIN A COMPOSITE STRUCTURE DURING FABRICATION AND LIFETIME IS AN IMPORTANT MEANS TO IMPROVE THE QUALITY AND RELIABILITY OF COMPOSITE PRODUCTION. THE GOOD MECHANICAL AND CHEMICAL COMPATIBILITY BETWEEN OPTICAL FIBRES AND THE COMPOSITE MATRIX ENABLES ONE TO EMBED A FIBRE OPTIC SENSOR NETWORK INTO A COMPOSITE STRUCTURE AND TO CHECK LOCAL PROPERTIES WITH A SUITABLE INTERROGATION TECHNIQUE. THE MAJOR OBJECTIVES OF THE PROJECT ARE TO:

- DESIGN THE FIBRE OPTIC SENSING ELEMENTS FOR MEASURING STRAIN AND TEMPERATURE AS WELL AS THE OPTIMAL NETWORK,
- ESTABLISH GENERAL RULES FOR INCORPORATING FIBRE OPTIC SENSORS INTO THE COMPOSITE AND DEVELOP MANUFACTURING PROCEDURES WHICH AVOID THE DEGRADATION OF BOTH SENSOR AND COMPOSITE,
- ASSESS THE RELEVANCE OF THE SENSING NETWORK FOR REPRESENTATIVE COMPOSITE STRUCTURES, STRAINS AND TEMPERATURE.

Topic(s)

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Call for proposal

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Coordinator

Bertin et Cie S.A.
EU contribution
No data
Address
59,Rue Pierre Curie 59
78373 Plaisir
France

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Total cost
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Participants (6)