Free-edge delamination location and growth montoring with an embedded distributed fiber optic network

Díaz-Maroto, Patricia and Fernández López, Antonio and Larrañaga, Beatriz and Güemes Gordo, Jesús Alfredo (2016). Free-edge delamination location and growth montoring with an embedded distributed fiber optic network. In: "8th European Workshop On Structural Health Monitoring", 5-8 Jul 2016, Bilbao. ISBN 978-1-5108-2793-6.

Description

Title: Free-edge delamination location and growth montoring with an embedded distributed fiber optic network
Author/s:
  • Díaz-Maroto, Patricia
  • Fernández López, Antonio
  • Larrañaga, Beatriz
  • Güemes Gordo, Jesús Alfredo
Item Type: Presentation at Congress or Conference (Article)
Event Title: 8th European Workshop On Structural Health Monitoring
Event Dates: 5-8 Jul 2016
Event Location: Bilbao
Title of Book: 8th European Workshop On Structural Health Monitoring
Date: 2016
ISBN: 978-1-5108-2793-6
Subjects:
Freetext Keywords: Fiber Optic, Distributed sensing, Aerospace SHM Applications, Delamination, Rayleigh scatter, OBR.
Faculty: E.T.S. de Ingeniería Aeronáutica y del Espacio (UPM)
Department: Materiales y Producción Aeroespacial
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Delamination is the most characteristic damage found in composite materials. Low velocity impacts may lead to delamination onset, likely to occur during manufacturing processes or in operating service life.Furthermore, areas near the free-edge of the structures,as well as ply drop off and integrated reinforcements have demonstrate a high vulnerability to impacts. This paper focuses on the delamination detection based on an embedded or fixed fiber optic network in a composite laminate. The sensor network uses the Rayleigh scattering through an Optical Backscatter Reflectometer (OBR)that it obtains a continuous strain monitoring on a bare opical fiber. For this purpose, several optical fibers were attached on the structure surface close to the free edge of the specimens in order to identify the first-ply failure and the delamination growth. Experimental results were compared to an ultrasonic C-Scan inspection which present a good agreement with the data of sensor network.

More information

Item ID: 48185
DC Identifier: http://oa.upm.es/48185/
OAI Identifier: oai:oa.upm.es:48185
Official URL: http://www.ndt.net/events/EWSHM2016/app/content/Paper/316_FernandezDiaz-Maroto.pdf
Deposited by: Memoria Investigacion
Deposited on: 23 Feb 2018 10:51
Last Modified: 23 Feb 2018 10:51
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