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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.

Funding Scheme

CSC - Cost-sharing contracts
Leaflet | Map data © OpenStreetMap contributors, Credit: EC-GISCO, © EuroGeographics for the administrative boundaries

Coordinator

Bertin et Cie S.A.
Address
59,Rue Pierre Curie 59
78373 Plaisir
France

Participants (6)

Alenia Aerospazio - Un' Azienda Finmeccanica SpA
Italy
Address
Corso Marche 41
10146 Torino
CISE - Centro Informazioni Studi ed Esperienze SpA
Italy
Address
Via Reggio Emilia 39
20090 Segrate Milano
ELECTRICITE DE FRANCE
France
Address
Rue Louis Murat 2
75008 Paris
GKN Technology
United Kingdom
Address
Birmingham New Road
WV4 6BW Wolverhampton
UNIVERSITY OF STRATHCLYDE
United Kingdom
Address
16 Richmond Street
Glasgow
United Kingdom Atomic Energy Authority
United Kingdom
Address
353,Harwell
OX11 0RA Didcot - Oxfordshire