Strain measurements and damage detection in large composite structures by fiber optics sensors

J. Sierra, A. Güemes, M. Gómez

Resultado de la investigación: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

1 Cita (Scopus)

Resumen

A 13.5 meters prototype of blade designed by Cener for a 150 kW wind turbine machine, made with glass fiber and vinylester resin doped with carbon nanofibers, was manufactured by Grupo Antolín using a new technique called Light RTM. The blade was done as a monocoque structure with a PVC foam core. Indra and UPM have developed a methodology for instrumenting the blade with fiber optic sensors embedded into the structure during the manufacturing process. Two different sensing techniques were embedded into the blade: Fiber Bragg Gratings (FBG) and a plain fiber optic for Distributed Sensing using an Optical Backscatter Reflectometer (OBR). By means of a novel and robust automated technique based in strain field pattern recognition, a study of detectability of defects was performed for the blade under different load scenarios. Several static tests were conducted, including a test campaign with known artificial damages induced into the structure and the sensitivity of the technique was evaluated. The results showed that every damages could be detected by using both sensing techniques.

Idioma originalInglés
Título de la publicación alojada16th European Conference on Composite Materials, ECCM 2014
EditorialEuropean Conference on Composite Materials, ECCM
ISBN (versión digital)9780000000002
EstadoPublicada - 2014
Publicado de forma externa
Evento16th European Conference on Composite Materials, ECCM 2014 - Seville, Espana
Duración: 22 jun. 201426 jun. 2014

Serie de la publicación

Nombre16th European Conference on Composite Materials, ECCM 2014

Conferencia

Conferencia16th European Conference on Composite Materials, ECCM 2014
País/TerritorioEspana
CiudadSeville
Período22/06/1426/06/14

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