Beam Spectral Element with FRP Debonding

Sevillano Bravo, Enrique and Perera Velamazan, Ricardo and Sun, Rui (2013). Beam Spectral Element with FRP Debonding. In: "11th International Symposium on Fiber Reinforced Polymers for reinforced concrete structures", 26-28 junio 2013, Guimarães, Portugal. pp. 1-10.

Description

Title: Beam Spectral Element with FRP Debonding
Author/s:
  • Sevillano Bravo, Enrique
  • Perera Velamazan, Ricardo
  • Sun, Rui
Item Type: Presentation at Congress or Conference (Article)
Event Title: 11th International Symposium on Fiber Reinforced Polymers for reinforced concrete structures
Event Dates: 26-28 junio 2013
Event Location: Guimarães, Portugal
Title of Book: FRPRCS-11: 11th International Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures: Guimarães, Portugal, June 26-28, 2013
Date: 2013
Subjects:
Freetext Keywords: debonding, dynamic analysis, flexural strengthering, cracking, concrete
Faculty: E.T.S.I. Industriales (UPM)
Department: Aeronaves y Vehículos Espaciales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The behaviour of the interface between the FRP and the concrete is the key factor controlling debonding failures in FRP-strengthened RC structures. This defect can cause reductions in static strength, structural integrity and the change in the dynamic behavior of the structure. The adverse effect on the dynamic behavior of the defects can be utilized as an effective means for identifying and assessing both the location and size of debonding at its earliest stages. The presence of debonding changes the structural dynamic characteristics and might be traced in modal parameters, dynamic strain and wave patterns etc. Detection of minor local defects, as those origin of a future debonding, requires working at high frequencies so that the wavelength of the excited is small and sensitive enough to detect local damage. The development of a spectral element method gives a large potential in high-frequency structural modeling. In contrast to the conventional finite element, since inertial properties are modeled exactly few elements are necessary to capture very accurate solutions at the highest frequencies in large regions. A wide variety of spectral elements have been developed for structural members over finite and semi-infinite regions. The objective of this paper is to develop a Spectral Finite Element Model to efficiently capture the behavior of intermediate debonding of a FRP strengthened RC beam during wave-based diagnostics.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainBIA2010-20234-C03-01UnspecifiedUnspecifiedUnspecified

More information

Item ID: 36689
DC Identifier: http://oa.upm.es/36689/
OAI Identifier: oai:oa.upm.es:36689
Official URL: http://www.frprcs11.uminho.pt/Default.aspx?tabid=1&pageid=29&lang=en-US
Deposited by: Memoria Investigacion
Deposited on: 01 Apr 2016 10:17
Last Modified: 19 Apr 2016 09:34
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