Paper number 333
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SURFACE AND BULK STRESS/ STRAIN MEASUREMENTS IN COMPOSITE LAMINATES WITH A FIBRE-OPTIC RAMAN PROBE |
Costas Galiotis1,2 and Bish Arjyal2
1Institute of Chemical Engineering and High Temperature Processes, Foundation for Research & Technology-Hellas, Stadiou Street, Platani, P.O.Box 1414, GR-265 00, Patras, Greece.
2Department of Materials, Queen Mary & Westfield College, Mile End Road, London E1 4NS, UK
| Summary | Localised stress/ strain measurements in polymer based composites can now be made using a Laser Raman sensor. In this case the stress sensor is the reinforcing fibre of the composite and the detector is the Raman spectrometer. Raman stress/ strain sensor has been employed for unidirectional, as well as, multidirectional composites. The relationships between the local fibre stress or strain obtained from the Raman sensor and the far field stress or strain measured conventionally, are established. |
Keywords | smart structures, fibre optic, sensors, laser Raman spectroscopy. |