Creep behavior of GFRP laminates and their phases: Experimental investigation and analytical modeling

Berardi, Valentino Paolo; Perrella, Michele; Feo, Luciano; Cricrı̀, G.

doi:10.1016/j.compositesb.2017.04.015

Cited by 79 publications

(46 citation statements)

References 29 publications

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“…This non-contact optical technique has also allowed to evaluate the strain field with a good accuracy. The proposed test methodology can be easily extended in a near future to the analysis of long-term behavior of adhesive interface, accounting its viscous nature [34][35][36][37][38][39], against a limited computational and time burden due to the optimized use of DIC technique.…”

Section: Discussionmentioning

confidence: 99%

Cohesive fracture in composite systems: experimental setup and first results

Berardi¹,

Perrella²,

Cricrı̀³

2019

Frattura Ed Integrità Strutturale

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Composite systems are widely used in many engineering applications for new structures and strengthening of existing ones. Within the structural rehabilitation of civil constructions, the plating technique of beams with Fiber Reinforced Polymer (FRP) represents a quick and optimal intervention with respect to traditional ones. The failure of these composite systems usually occurs due to the FRP debonding, which corresponds to a mode II fracture of concrete specimens. In this paper, a new experimental setup for investigating the mode II fracture behavior of FRP-concrete composite structures is presented. The test equipment consists of both conventional equipment and a non-contact optical technique, Digital Image Correlation (DIC), and the test system was realized at the Design Machine Laboratory of the University of Salerno. A preliminary test was performed and the corresponding results are shown and discussed.

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Section: Discussionmentioning

confidence: 99%

Cohesive fracture in composite systems: experimental setup and first results

Berardi¹,

Perrella²,

Cricrı̀³

2019

Frattura Ed Integrità Strutturale

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“…Residual stiffness is not simple to model as there are several overlapping factors including the rheological responses, bulk molecular kinematics and variations in molecular orientations at fibre interfaces, each as a function of loading time and frequency [308,309,310,311]. Yang et al [312] developed a stiffness reduction model assuming the stress-strain curve to failure as linear.…”

Section: Residual Stiffness Modelsmentioning

confidence: 99%

The fatigue of carbon fibre reinforced plastics - A review

Alam

Mamalis

Robert

et al. 2019

Composites Part B: Engineering

254

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Engineering structures are often subjected to the conditions of cyclic-loading, which onsets material fatigue, detrimentally affecting the service-life and damage tolerance of components and joints. Carbon fibre reinforced plastics (CFRP) are high-strength, lowweight composites that are gaining ubiquity in place of metals and glass fibre reinforced plastics (GFRP) not only due to their outstanding strength-to-weight properties, but also because carbon fibres are relatively inert to environmental degradation and as such, show potential as corrosion resistant materials. The effects of cyclic loading on the fatigue of CFRP are detailed in several papers. As such, collating research on CFRP fatigue into a single document is a worthwhile exercise, as it will benefit the engineering-readership interested in designing fatigue resistant structures and components using CFRP. This review article aims to provide the most relevant and up-to-date information on the fatigue of CFRP. The review focuses in particular on defining fatigue and the mechanics of cyclically-loaded composites, elucidating the fatigue response and fatigue properties of CFRP in different forms, discussing the importance of environmental factors on the fatigue performance and service-life, and summarising the different approaches taken to modelling fatigue in CFRP.

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“…These profiles are high load-carrying capacity structural components subjected primarily to axial or bending loads [3][4][5][6]. The description of problems recently considered for modern composite materials can be found, for instance, in [7][8][9], where the authors present mainly experimental research on the failure of the composite material. The studies presented in the abovementioned works are described using the example of thin-walled structures made of glass fiber-reinforced plastic and fiber metal laminate materials.…”

Section: Introductionmentioning

confidence: 99%

“…There are several problems with FRP composites that must be considered when introducing them to various load-bearing structures, such as them exceeding metals or other engineering materials due to their high strength to mass ratio [ 10 ]. One of the basic weakness of the FRP laminates is their susceptibility to different forms of damage, among which delamination predominates [ 9 ]. This form of material deterioration is understood as interlaminar cleavage that can be studied within the framework of Fracture Mechanics, as 2D or 3D crack initiation and propagation [ 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Stability and Load-Carrying Capacity of Thin-Walled FRP Composite Z-Profiles under Eccentric Compression

et al. 2020

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This study investigates the effect of eccentric compressive load on the stability, critical states and load-carrying capacity of thin-walled composite Z-profiles. Short thin-walled columns made of carbon fiber-reinforced plastic composite material fabricated by the autoclave technique are examined. In experimental tests, the thin-walled structures were compressed until a loss of their load-carrying capacity was obtained. The test parameters were measured to describe the structure’s behavior, including the phenomenon of composite material failure. The post-critical load-displacement equilibrium paths and the acoustic emission signal enabling analysis of the composite material condition during the loading process were measured. The scope of the study also included performing numerical simulations by finite element method to solve the problem of non-linear stability and to describe the phenomenon of composite material damage based on the progressive failure model. The obtained numerical results showed a good agreement with the experimental characteristics of real structures. The numerical results are compared with the experimental findings to validate the developed numerical model.

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Creep behavior of GFRP laminates and their phases: Experimental investigation and analytical modeling

Cited by 79 publications

References 29 publications

Cohesive fracture in composite systems: experimental setup and first results

Cohesive fracture in composite systems: experimental setup and first results

The fatigue of carbon fibre reinforced plastics - A review

Stability and Load-Carrying Capacity of Thin-Walled FRP Composite Z-Profiles under Eccentric Compression

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