Methodology based on FBG sensors for monitoring of FRP-strengthened beams

Sevillano Bravo, Enrique and Perera Velamazan, Ricardo and Arteaga Iriarte, Ángel and Diego Villalón, Ana de (2013). Methodology based on FBG sensors for monitoring of FRP-strengthened beams. In: "6th ECCOMAS Conference on Smart Structures and Materials SMART2013", 24-26 June 2013, Torino (Italy). pp. 1-9.

Description

Title: Methodology based on FBG sensors for monitoring of FRP-strengthened beams
Author/s:
  • Sevillano Bravo, Enrique
  • Perera Velamazan, Ricardo
  • Arteaga Iriarte, Ángel
  • Diego Villalón, Ana de
Item Type: Presentation at Congress or Conference (Article)
Event Title: 6th ECCOMAS Conference on Smart Structures and Materials SMART2013
Event Dates: 24-26 June 2013
Event Location: Torino (Italy)
Title of Book: Proceedings of 6th ECCOMAS Conference on Smart Structures and Materials - SMART2013
Date: 2013
Subjects:
Freetext Keywords: FRP, debonding identification, simplified model, fibre optic sensors
Faculty: E.T.S.I. Industriales (UPM)
Department: Mecánica Estructural y Construcciones Industriales [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Advanced composite materials are increasingly used in the strengthening of reinforced concrete (RC) structures. The use of externally bonded strips made of fibre-reinforced plastics (FRP) as strengthening method has gained widespread acceptance in recent years since it has many advantages over the traditional techniques. However, unfortunately, this strengthening method is often associated with a brittle and sudden failure caused by some form of FRP bond failure, originated at the termination of the FRP material or at intermediate areas in the vicinity of flexural cracks in the RC beam. Up to date, little effort in the early prediction of the debonding in its initial instants even though this effect is not noticeable by simple visual observation. An early detection of this phenomenon might help in taking actions to prevent future catastrophes. Fibre-optic Bragg grating (FBG) sensors are able to measure strains locally with high resolution and accuracy. Furthermore, as their physical size is extremely small compared with other strain measuring components, it enables to be embedded at the concrete-FRP interface for determining the strain distribution without influencing the mechanical properties of the host materials. This paper shows the development of a debonding identification methodology based on strains experimentally measured. For, it a simplified model is implemented to simulate the behaviour of FRP-strengthened reinforced concrete beams. This model is taken as a basis to. develop an model updating procedure able to detect minor debonding at the concrete-FRP interface from experimental strains obtained by using FBG sensors embedded at the interface

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainBIA2010-20234-C03-01)UnspecifiedUnspecifiedUnspecified

More information

Item ID: 36711
DC Identifier: http://oa.upm.es/36711/
OAI Identifier: oai:oa.upm.es:36711
Official URL: http://www.eccomas.org/vpage/1/14/2013
Deposited by: Memoria Investigacion
Deposited on: 14 Apr 2016 10:41
Last Modified: 19 May 2016 09:37
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