The efficiency of advanced polymeric composite sleeves in the rehabilitation of cracked pipelines under combined loadings

Mousa, Saeed; Mutnbak, Mohammed; Abd-Elhady, Amr A.; Sallam, Hossam El-Din M.; Reda, Ramy M.

doi:10.1016/j.jmrt.2023.07.078

Cited by 9 publications

(2 citation statements)

References 19 publications

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“…Additionally, the ANSYS Workbench offers capabilities for adaptive meshing, which allows for automatic refinement of the mesh around the crack tip to accurately capture stress gradients and accurately predict crack growth. Furthermore, software packages like Abaqus [11,12], COMSOL [13,14], FRANC3D [15,16], Zencrack [17], AFGROW [18], NASGRO [19], and Nastran [17] also provide powerful computational tools for simulating crack growth and analyzing the behavior of structures subjected to crack propagation. Additionally, there exist various software options for simulating crack propagation, such as the advanced iterative-finite element method (AI-FEM) [20] and advanced finite element analysis (AFEA) [21].…”

Section: Introductionmentioning

confidence: 99%

Investigating the Influence of Holes as Crack Arrestors in Simulating Crack Growth Behavior Using Finite Element Method

Fageehi,

Alshoaibi

2024

Applied Sciences

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The primary focus of this paper is to investigate the application of ANSYS Workbench 19.2 software’s advanced feature, known as Separating Morphing and Adaptive Remeshing Technology (SMART), in simulating the growth of cracks within structures that incorporate holes. Holes are strategically utilized as crack arrestors in engineering structures to prevent catastrophic failures. This technique redistributes stress concentrations and alters crack propagation paths, enhancing structural integrity and preventing crack propagation. This paper explores the concept of using holes as crack arrestors, highlighting their significance in increasing structural resilience and mitigating the risks associated with crack propagation. The crack growth path is estimated by applying the maximum circumferential stress criterion, while the calculation of the associated stress intensity factors is performed by applying the interaction integral technique. To analyze the impact of holes on the crack growth path and evaluate their effectiveness as crack arrestors, additional specimens with identical external dimensions but without any internal holes were tested. This comparison was conducted to provide a basis for assessing the role of holes in altering crack propagation behavior and their potential as effective crack arrestors. The results of this study demonstrated that the presence of a hole had a significant influence on the crack growth behavior. The crack was observed to be attracted towards the hole, leading to a deviation in its trajectory either towards the hole or deflecting around it. Conversely, in the absence of a hole, the crack propagated without any alteration in its path. To validate these findings, the computed crack growth paths and associated stress intensity factors were compared with experimental and numerical data available in the open literature. The remarkable consistency between the computational study results for crack growth path, stress intensity factors, and von Mises stress distribution, and the corresponding experimental and numerical data, is a testament to the accuracy and reliability of the computational simulations.

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Section: Introductionmentioning

confidence: 99%

Investigating the Influence of Holes as Crack Arrestors in Simulating Crack Growth Behavior Using Finite Element Method

Fageehi,

Alshoaibi

2024

Applied Sciences

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“…While ANSYS Workbench [33][34][35][36][37][38][39] is a prominent software for FCG analysis, it is important to acknowledge that there are other software tools available in the field with their own unique strengths and areas of application. Examples of such software tools include ABAQUS [40,41], FRANC3D [42], ZENCRACK [43], COMSOL [44], BEASY [45], and NASTRAN [46]. Certainly, this article primarily emphasizes the importance of ANSYS Workbench in the FCG analysis.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Crack Growth Analysis in Modified Compact Tension Specimen with Varying Stress Ratios: A Finite Element Study

Alshoaibi

2023

Applied Sciences

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In this study, the primary objective is to analyze fatigue crack propagation in linear elastic fracture mechanics using the SMART crack growth module in the ANSYS Workbench, employing the finite element method. The investigation encompasses several crucial steps, including the computation of stress intensity factors (SIFs), determination of crack paths, and estimation of remaining fatigue life. To thoroughly understand crack behavior under various loading conditions, a wide range of stress ratios, ranging from R = 0.1 to R = 0.9, is considered. The research findings highlight the significant impact of the stress ratio on the equivalent range of SIFs, fatigue life cycles, and distribution of deformation. As the stress ratio increases, there is a consistent reduction in the magnitude of the equivalent range of stress intensity factor. Additionally, a reciprocal relationship is observed between the level of X-directional deformation and the number of cycles to failure. This indicates that components experiencing lower levels of deformation tend to exhibit longer fatigue life cycles, as evidenced by the specimens studied. To verify the findings, the computational results are matched with the crack paths and fatigue life data obtained from both experimental and numerical sources available in the open literature. The extensive comparison carried out reveals a remarkable level of agreement between the computed outcomes and both the experimental and numerical results.

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Strain and damage monitoring of optical fiber sensor‐embedded carbon fiber reinforced polymer confined cracked pipes

Shi,

Kong,

et al. 2024

Polymer Composites

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Pipelines for water, oil, or gas transportation are prone to cracking damage due to severe service conditions. Carbon fiber reinforced polymer (CFRP) composites have been applied to repair cracked pipelines. In the present paper, fiber Bragg grating (FBG) and Brillouin optical time domain analysis (BOTDA) technology were applied to monitor the circumferential strains of the steel pipes and CFRP confined seamless/cracked steel pipes in hydrostatic testing. The finite element model (FEM), and the mechanical model were used to verify and analyze monitored strains. The results showed that FBG achieved real‐time and high‐precision strain monitoring with an error of less than 9.3%, better than BOTDA (less than 22.0%). Compared with FBG, the strain of FEM showed that the error of seamless pipe is less than 6%, and the error of cracked pipe is less than 15%. FEM strain field analysis revealed the failure mode of the confined cracked pipe in tensile fracture of structural adhesive between CFRP and steel substrate. The debonding was identified by the sudden strain drops (4.3%–26.2%) in the cracked area. The leakage was identified by a sudden drop (53.0%) in the slope significantly and fluctuations from the curve of strain and hydrostatic pressure after failure.Highlights Sensor‐embedded CFRP confined cracked pipes prevent leakage and monitor strain. Multiple FBG sensors are more accurate to monitoring the pipe strain than BOTDA. Debonding of CFRP confined cracked pipes is monitored by the sudden strain drop. Leakage of CFRP confined cracked pipes is detected by strain fluctuations.

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The efficiency of advanced polymeric composite sleeves in the rehabilitation of cracked pipelines under combined loadings

Cited by 9 publications

References 19 publications

Investigating the Influence of Holes as Crack Arrestors in Simulating Crack Growth Behavior Using Finite Element Method

Investigating the Influence of Holes as Crack Arrestors in Simulating Crack Growth Behavior Using Finite Element Method

Fatigue Crack Growth Analysis in Modified Compact Tension Specimen with Varying Stress Ratios: A Finite Element Study

Strain and damage monitoring of optical fiber sensor‐embedded carbon fiber reinforced polymer confined cracked pipes

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