Experimental and numerical investigation of the behaviour of CFRP strengthened CHS beams subjected to bending

Kabir, M.H.; Fawzia, Sabrina; Chan, Tommy H.T.; Gamage, J.C.P.H.; Bai, J.B.

doi:10.1016/j.engstruct.2016.01.047

Cited by 67 publications

(57 citation statements)

References 46 publications

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“…The finite element (FE) method is a well-recognised method to evaluate the SIF of surface cracks (Branco et al 2015) and the mechanical response of CRS reinforced steel structures (Haedir et al 2009;Kabir et al 2016). In this section, a three-dimensional FE model is built for the purpose of evaluating the SIF of the circumferential internal surface crack in steel pipes reinforced with CRS.…”

Section: Numerical Modellingmentioning

confidence: 99%

“…The pipe models are subjected to bending, which is a major load case for offshore steel pipes. In order to guarantee its accuracy, the FE model is validated by experimental results from literature (Yoo and Ando 2000;Kabir et al 2016).…”

Section: Numerical Modellingmentioning

confidence: 99%

“…The FE analysis is conducted using the commercial code ANSYS workbench 19 (ANSYS 2018). The model conforming to the experimental setup of the studies by Kabir et al (2016) and Yoo and Ando (2000) subjected to four-point bending are developed for the validation purpose. The FE model includes the cracked steel pipe, CRS on the steel pipe, load and supports units.…”

Section: Finite Element Modelling Strategymentioning

confidence: 99%

“…The aim of phase one is to validate the mechanical transmission between the pipe and the composite layers. Three groups of experimental results (conforming to the specimens 'B2_US', 'S5B-1', and 'S6B-2' in the referred study) of intact pipes reinforced with CRS subjected to bending from the study by Kabir et al (2016) are applied, as listed in Table 1. The FE models include one intact pipe without reinforcement, and two CRS reinforced steel pipes using different CFRP wrapping scheme, as shown in Figure 5.…”

Section: Validation Of Phase One: Intact Pipe Reinforced With Crs Submentioning

confidence: 99%

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Numerical analysis on the SIF of internal surface cracks in steel pipes reinforced with CRS subjected to bending

Jiang

Hopman

2019

Ships and Offshore Structures

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In this paper, Composite Repair System (CRS) is applied to repair the circumferential internal surface cracked steel pipes subjected to bending. The Stress Intensity Factor (SIF) is quantitatively analysed by means of numerical simulations, and the crack growth rate is predicted by using the Paris' law. First, the three-dimensional finite element (FE) model is developed, and its reliability of evaluating SIF of internal surface crack in CRS reinforced pipe is validated. Then based on the FE method and combined with Paris' law, a case study is deployed to predict the internal surface crack growth in steel pipes reinforced with CRS. The results show that CRS have significantly reduced the SIF of the internal surface crack and decrease the crack growth rate, while unchanging the variation trend of the crack aspect ratio. Afterwards, a parametric study is performed in order to guide the optimisation design of CRS reinforcement.

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Section: Numerical Modellingmentioning

confidence: 99%

Section: Numerical Modellingmentioning

confidence: 99%

Section: Finite Element Modelling Strategymentioning

confidence: 99%

Section: Validation Of Phase One: Intact Pipe Reinforced With Crs Submentioning

confidence: 99%

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Numerical analysis on the SIF of internal surface cracks in steel pipes reinforced with CRS subjected to bending

Jiang

Hopman

2019

Ships and Offshore Structures

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“…They showed that the polymer binding strength depends on the quality, integrity and durability of the polymer adhesive. Many researchers [8][9][10][11][12] developed several theories of degradation of polymer adhesives. One of the most important theory says that the degradation of polymer adhesive occurs due to the permeability of joining materials, which is mainly caused because of moisture diffusion in to the polymer adhesives [13].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Environmental Degradation on Joint Properties of Polymer Adhesive Joints in Salt Water Environment

Kerur¹,

Shivakumar²

2019

International Journal of Engineering Sciences

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The objective of research work is to establish the influence of environmental factors such as moisture and temperature on the shear properties of metal and polymer joints. The specimens of metal and polymer joints were prepared with aluminium plate and glass fibre reinforced plastics. Here three types of resins were used for joining the metal and polymer composites viz. epoxy vinyl ester and polyester. The joint specimens were exposed to 80 C temperature and relative humidity of 90% for 25 days in environmental chamber. The single and double shear strength of the joints for ascast and hygrothermal exposed specimens are investigated. The results showed that the strength of hydrothermal specimens decreased about 25%, 18% and 33% for epoxy, vinyl ester and polymer adhesive joints respectively. The result also shows that vinyl ester joints exhibit lower water absorption and property degradation of the joints.

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Finite element analysis of rectangular RC beams strengthened with FRP laminates under pure torsion

Majed

Allawi

2021

Structural Concrete

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Composite materials have attracted wide attention in strengthening of structural members. In this study, the behavior of rectangular reinforced concrete (RC) strengthened with fiber reinforced polymer (FRP) laminates under pure torsion was investigated numerically and validated by existing data from literature. Various practical strengthening configurations were considered and the efficiency of them was illustrated. Concrete damage plasticity constitutive model was used and required parameters was drawn. Good agreement in terms of torque-twist behaviors of RC beams strengthened with FRP laminates before and after cracking was found. Reasonable steel and FRP reinforcement responses as well as crack patterns were achieved and the failure modes of all the specimens were modeled correctly. A parametric study was carried out and parameter such as number of FRP plies, concrete compressive strength, and FRP strip orientations were considered. The results showed that the torsional capacity could improves by increasing the number of FRP plies and concrete compressive strength. Moreover, no significant change in the torsional capacity of RC beams when it was strengthened with a 45 or with a 90 FRP laminate was observed.

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Experimental and numerical investigation of the behaviour of CFRP strengthened CHS beams subjected to bending

Cited by 67 publications

References 46 publications

Numerical analysis on the SIF of internal surface cracks in steel pipes reinforced with CRS subjected to bending

Numerical analysis on the SIF of internal surface cracks in steel pipes reinforced with CRS subjected to bending

Investigation of Environmental Degradation on Joint Properties of Polymer Adhesive Joints in Salt Water Environment

Finite element analysis of rectangular RC beams strengthened with FRP laminates under pure torsion

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