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Fracture mechanics of plate debonding: validation against experiment

Fracture mechanics of plate debonding: validation against experiment
Fracture mechanics of plate debonding: validation against experiment
The debonding of FRP plates from concrete beams is not amenable to finite-element analysis; fracture mechanics, based on a global energy balance, offers a better alternative. An analytical model with energy calculations based on a revised version of Branson’s model (to take account of the reaction to the force in the FRP) has already been developed. This paper presents comparisons with a variety of experiments reported in the literature and shows that the model can correctly determine both the failure load and the failure mechanism. The paper shows that debonding often propagates in the concrete, just above the interface, and hence the failure load is dependent on the Mode I fracture energy of concrete. The method can also be used to determine when premature adhesive failure occurred prior to debonding within the concrete substrate.


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0950-0618
2961-2971
Achintha, M.
8163c322-de6d-4791-bc31-ba054cc0e07d
Burgoyne, C.J.
4be2f2b6-7e64-4fb2-94a8-f2a0886b6751
Achintha, M.
8163c322-de6d-4791-bc31-ba054cc0e07d
Burgoyne, C.J.
4be2f2b6-7e64-4fb2-94a8-f2a0886b6751

Achintha, M. and Burgoyne, C.J. (2011) Fracture mechanics of plate debonding: validation against experiment. Construction and Building Materials, 25 (6), 2961-2971. (doi:10.1016/j.conbuildmat.2010.11.103).

Record type: Article

Abstract

The debonding of FRP plates from concrete beams is not amenable to finite-element analysis; fracture mechanics, based on a global energy balance, offers a better alternative. An analytical model with energy calculations based on a revised version of Branson’s model (to take account of the reaction to the force in the FRP) has already been developed. This paper presents comparisons with a variety of experiments reported in the literature and shows that the model can correctly determine both the failure load and the failure mechanism. The paper shows that debonding often propagates in the concrete, just above the interface, and hence the failure load is dependent on the Mode I fracture energy of concrete. The method can also be used to determine when premature adhesive failure occurred prior to debonding within the concrete substrate.


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Published date: 20 January 2011
Organisations: Infrastructure Group

Identifiers

Local EPrints ID: 209089
URI: https://eprints.soton.ac.uk/id/eprint/209089
ISSN: 0950-0618
PURE UUID: cff58403-2486-4a87-9be7-4f51c03c2adc
ORCID for M. Achintha: ORCID iD orcid.org/0000-0002-1732-3514

Catalogue record

Date deposited: 25 Jan 2012 15:38
Last modified: 05 Nov 2019 01:40

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