Impact of thermal loads on interfacial debonding in FRP strengthened beams

Rabinovitch, Oded

doi:10.1016/j.ijsolstr.2010.08.003

Cited by 28 publications

(9 citation statements)

References 49 publications

(62 reference statements)

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“…Moore [16] formulated a general beam model from first principles, using a force balance approach to calculate the peeling moment arising from delamination of the structure under a uniform temperature difference. Rabinovitch [17] also considered the effect of temperature on debonding and calculated energy release rates via the /-integral. A nonmonotonic dependency of bond failure on temperature is observed, which he attributed to the thermal impact on the interfacial stresses.…”

Section: Introductionmentioning

confidence: 99%

On the Interaction of Thermally Induced Buckling and Debond Propagation in Patched Structures

Carabetta

Bottega

2012

Journal of Applied Mechanics

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The coupling of edge debonding and thermal buckling of patched beam-plates possessing initial edge detachment is examined for the case when the structure is subjected to a uniform temperature change. The geometrically nonlinear analytical model employed is that established by the authors in a prior work. The problem is recast in a mixed formulation in terms of the transverse deflection and the membrane force to aid in the analysis and physical interpretation. The interaction of edge-debond propagation and thermal buckling is studied. The phenomenon of buckle-trapping, originally obseii'ed by the authors in a congruent study, as well as the phenomenon of sling-shot buckling, is seen to manifest itself in the debonding behavior. The evolution of the structure is predicted as a function of given material and geometric parameters from numerical simulations based on analytical solutions of the nonlinear problem. A (propagating) contact zone adjacent to the bonded region is accounted for, and its presence or absence, as well as its nature, is seen to be highly influential in the global as well as local behavior of the structure.

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Section: Introductionmentioning

confidence: 99%

On the Interaction of Thermally Induced Buckling and Debond Propagation in Patched Structures

Carabetta

Bottega

2012

Journal of Applied Mechanics

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“…There are multiple loading methods in the tests and corresponding bonded specimens. The loading methods include peel off loading [1,4,6], shear loading, bending loading [17][18][19], compressive loading [15,20], biaxial tension [21], mix modes loadings [5], impact loading [12] and fatigue loading [7,22].…”

Section: Loading Methodsmentioning

confidence: 99%

“…There are multiple failure modes in the bonded joint of composites due to different loading condition, materials and boundary condition in the joint et al So the developed model is supposed to be capable of capturing one or several main failure modes to predict the damage state. The main failure modes in composite bonded joint include adhesive failure [1,5,13], cohesive failure [4,17], matrix failure [17,18] and mixed failure [12,21].…”

Section: Failure Modesmentioning

confidence: 99%

Modeling and Analysis of Composite Bonded Joints

Park¹,

Frey²,

Simon³

2017

AJMIE

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The bonded joints in composite structures is a challenging point in both research study and industry application.Compared with homogeneous and isotropic material, there is higher chance of stress concentration and intrinsic weak for this anisotropic structures. It is most common source of failure in structural laminates. So it is important to model and analyze the composite bonded joint to get the mechanical response and estimate the damage evolution. In this review paper, composite bonded joint are categorized based on bonded methods, materials, loading methods and failure modes. Multiple widely used adhesive bonded joint models including cohesive zone element model (CZM), interface element model, multiple point constraint model, kinking crack model, and repeating RVE model are introduced and discussed. To estimate the damage evolution in the bonded joint, a series of damage criteria have been developed including displacement based, stress based, energy based and modulus based damage criteria. Those damage criteria of bonded joint are also discussed and compared. This review work is important for the development of modeling of composite bonded joint in future.

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“…Mechanics-based theoretical investigations into the interfacial bond between the CFRP and concrete substrate were studied by several researchers. Rabinovitch [7] developed an analytical model for CFRP-strengthened concrete beams at elevated temperatures from´10 to 80˝C, based on high-order mathematical equations combined with a fracture mechanics approach. Predicted results included stress profiles along the bond-line, failure load, and edge debonding.…”

Section: Introductionmentioning

confidence: 99%

Effect of Thermal Distress on Residual Behavior of CFRP-Strengthened Steel Beams Including Periodic Unbonded Zones

Yoshitake

Tsuda²,

Kim

et al. 2015

Polymers

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This paper presents the residual behavior of wide-flange steel beams strengthened with high-modulus carbon fiber-reinforced polymer (CFRP) laminates subjected to thermal loading. Because the coefficients of thermal expansion of the steel and the CFRP are different, temperature-induced distress may take place along their interface. Periodic unbonded zones are considered to represent local interfacial damage. Five test categories are designed depending on the size of the unbonded zones from 10 to 50 mm, and corresponding beams are loaded until failure occurs after exposing to a cyclic temperature range of ∆T = 25˝C (´10 to 15˝C) up to 84 days. The composite action between the CFRP and the steel substrate is preserved until yielding of the beams happens, regardless of the thermal cycling and periodic unbonded zones. The initiation and progression of CFRP debonding become apparent as the beams are further loaded, particularly at geometric discontinuities in the vicinity of the unbonded zones along the interface. A simple analytical model is employed to predict the interfacial stress of the strengthened beams. A threshold temperature difference of ∆T = 30˝C is estimated for the initiation and progression of CFRP debonding. Multiple debonding-progression stages in conjunction with the extent of thermal distress appear to exist. It is recommended that high-modulus CFRP be restrictively used for strengthening steel members potentially exposed to a wide temperature variation range.

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Impact of thermal loads on interfacial debonding in FRP strengthened beams

Cited by 28 publications

References 49 publications

On the Interaction of Thermally Induced Buckling and Debond Propagation in Patched Structures

On the Interaction of Thermally Induced Buckling and Debond Propagation in Patched Structures

Modeling and Analysis of Composite Bonded Joints

Effect of Thermal Distress on Residual Behavior of CFRP-Strengthened Steel Beams Including Periodic Unbonded Zones

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