Non-destructive Monitoring Of Composite Elements By Means Of Embedded Optical Fibre Bragg-sensors.
Free (open access)
W. De Waele, J. Degrieck, W. Moerman L. Taerwe, R. Baets
This paper will report on the results of tests carried out to demonstrate the applicability of optical fibre sensors as a non-destructive evaluation technique. So-called Bragg-sensors, which serve as an internal strain gauge, have been succesfully embedded into composite specimens made of carbon fibre reinforced epoxy prepreg. It is shown that these sensors can be succesfully used for static and dynamic monitoring of the mechanical strain inside a composite laminate, and for the assessment of global damage of the specimen. Optical fibres with Bragg-sensor have also been embedded into filament wound pressure vessels made of