Finite-Element Modeling of a Damaged Pipeline Repaired Using the Wrap of a Composite Material

Lyapin, A. A.; Чебаков, М. И.; Dumitrescu, Andrei; Zecheru, Gh.

doi:10.1007/s11029-015-9504-9

Cited by 16 publications

(4 citation statements)

References 20 publications

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“…The stress-strain states in the corroded pipe area under the operational (internal) pressure, before and after repair, should be investigated and compared, together with the maximum stress/strain value in the pipe wall. Such investigations can be performed experimentally (results of pressure tests-some performed with the contribution of the authors-can be found in [28,30,31]), numerically (using finite elements simulation models-shown in [23,32,33]) or analytically.…”

Section: Reinforcement Effect Evaluation and Design Of The Composite Materials Repair Systemsmentioning

confidence: 99%

Corrosion Repair of Pipelines Using Modern Composite Materials Systems: A Numerical Performance Evaluation

et al. 2021

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Pipe corrosion is a frequent phenomenon, and if repairs are delayed it could lead to environmental damage. Drilling activities can expand only when sufficient surface transportation capacity for the produced fluids exists and thus good maintenance of the transportation system is important. Furthermore, the technology presented herein can be easily upgraded as a repair solution for surface casing section below the casing head, which have been repeatedly reported as being highly corroded for older wells. This paper presents the results of the research work carried out by the authors in order to evaluate the design methods of the modern composite material systems used to repair steel pipes carrying hydrocarbons upon which local metal loss defects (generated by corrosion and/or erosion processes) have been detected. The pipe repair technologies consisting of the application of composite material wraps (made of a polymeric matrix and reinforcing fabric) are perceived as being advantageous alternative solutions for substituting the conventional technologies, which require welding operations to be performed in the corroded pipe areas. The performance and the design methods of the composite repair systems have been investigated by evaluating the reinforcement effects (the restoration level of the damaged pipe mechanical strength) generated by the applied composite wraps as a function of their geometry and mechanical properties. To that purpose, numerical models based on finite elements (previously developed by the authors and certified by comparing them with the results of several experimental programs performed within our university) have been used. The calculation methods proposed in literature (among which a method previously proposed by the authors) to define the composite wrap dimensions (thickness and length) for a given pipe have been compared to the numerical results in order to select the most adequate solution for the design of the composite repair system. The influence in the design process of the defect orientation and of its width has also been investigated.

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Section: Reinforcement Effect Evaluation and Design Of The Composite Materials Repair Systemsmentioning

confidence: 99%

Corrosion Repair of Pipelines Using Modern Composite Materials Systems: A Numerical Performance Evaluation

et al. 2021

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“…Окремі аспекти ремонту конструкцій з полімерно-композиційних матеріалів (ПКМ), у тому числі СО об'єктів обертання, наведено у [4][5][6]. Найбільш широко питання визначення напруженого стану та ремонту зазначених об'єктів шляхом накладення бандажів з ПКМ описані у [7][8][9][10][11][12].…”

Section: характеристика нс балону з соunclassified

Restoring bearing capacity of fiberglass overwrap of aviation cylinders for storing liquids, gases and fire – extinguishing compounds

Kachmar¹,

Kryvov²,

Jermolin³

et al. 2021

M&AT

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The article proposes a methodology for numerical research of stressed condition (SC) of aviation cylinders for storing liquids, gases and fire-extinguishing compounds in order to determine structural and technological parameters (STP) for repairing of defects in their fiberglass overwraps (FO) due to long-term operation and mechanical damages. Structural and technological parameters for repair of FO using fiberglass bandages and fiberglass fabric patches аre determined on the examples of numerical research of SC of cylindrical and spherical cylinders. According to developed methodology, STP for repairing of FO of cylinders make possible to select modern materials and technological equipment.

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“…is used, a small amount of the above expression can be neglected, and the simplified bending stiffness of the sandwich beam structure can be obtained. Then there is a bending stiffness ratio between the sandwich beam and the solid beam [6]:…”

Section: Composite Sandwich Theorymentioning

confidence: 99%

Research and Analysis on Damage of Marine Ship Structures by Composite Materials Based on FEM Numerical Simulation

Xie

Liu

Yang³

et al. 2020

KEM

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In view of the particularity of marine foam sandwich composite structure, this paper establishes an equivalent parameter conversion system based on the classical sandwich structure design idea, and forms an equivalent simulation method to determine the initial stiffness, initial failure load and ultimate failure load of the structure. The simulation discriminant method makes the SHELL91 shell unit available for the marine foam sandwich composite structure. The bending test of the basic structure of marine foam sandwich composite beams and plates is described in detail. The equivalent simulation method is verified. The initial stiffness, initial failure load and ultimate failure load of the equivalent simulation are in good agreement with the experimental results. The paper finds through the finite element numerical simulation that the research results are consistent with the reality and have strong practicability and popularization. The paper preliminarily believes that this method can be applied to the simulation calculation of large foam sandwich composite ships and marine structures. The calculation amount is greatly reduced based on ensuring the accuracy, and the calculation work such as strength criterion and stiffness check of the overall structure has Strongly convincing.

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Finite-Element Modeling of a Damaged Pipeline Repaired Using the Wrap of a Composite Material

Cited by 16 publications

References 20 publications

Corrosion Repair of Pipelines Using Modern Composite Materials Systems: A Numerical Performance Evaluation

Corrosion Repair of Pipelines Using Modern Composite Materials Systems: A Numerical Performance Evaluation

Restoring bearing capacity of fiberglass overwrap of aviation cylinders for storing liquids, gases and fire – extinguishing compounds

Research and Analysis on Damage of Marine Ship Structures by Composite Materials Based on FEM Numerical Simulation

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