Reliability estimation of pressurized API 5L X70 pipeline steel under longitudinal elliptical corrosion defect

Zelmati, D.; Ghelloudj, Oualid; Amirat, Abdelaziz

doi:10.1007/s00170-016-9580-6

Cited by 15 publications

(2 citation statements)

References 19 publications

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“…Besides, a method for stopping cracks along gas pipelines by changing the configuration (flattening of the pipeline wall) of the pipe cross-section when a crack is approaching was proposed by Kaputkin and Arabey [52]. Thus far, the main causes of crack formation along pipelines were examined by Ghelloudj et al [53], Dao et al [54], Soomro et al [55], Sliem et al [56], and Biezma et al [57].…”

Section: Introductionmentioning

confidence: 99%

Finite-Element Modeling of the Dynamic Behavior of a Crack-like Defect in an Internally Pressurized Thin-Walled Steel Cylinder

Zhangabay,

Ibraimova,

Bonopera

et al. 2024

Applied Sciences

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This article presents one part of a study on the dynamic deformation and fracture of sections of steel gas pipelines with an external crack-like defect under the action of internal pressure. This work was performed on the basis of finite-element simulations using a cylindrical shell model executed by ANSYS-19.2 on the example of the section of the steel gas pipeline “Beineu–Bozoy–Shymkent” in the Republic of Kazakhstan. The propagation of the incipient crack-like defect along the pipeline and the resulting dynamic fracture in its tip area were investigated. The options of pipeline loading by working and critical internal pressure were both considered. It was found that, within the time of 1.0 ms, the formed crack expanded in the circumferential direction up to the maximum value, which depended on the value of the internal pressure. A further growth of cracks occurred along the longitudinal direction. At the operating pressure, the initial length of the crack increased by a factor of 5.6, while the equivalent stresses increased by a factor of 1.53 within 3.5 ms. Within the time of 3.75 ms, the equivalent stresses stopped growing due to the gas decompression. Specifically, there was a stop to the crack growth along the longitudinal direction. Vice versa, at the maximum pressure, the pipeline fracture did not change qualitatively, while at the time of the process, it decreased up to 3.5 ms. The finite-element results of the stress–strain state and pipeline fracture in the crack tip area at the working pressure showed that, within the time of 1.0 ms, the distance between the crack walls reached 23 mm at the free edge. Conversely, within the time periods of 2.25 and 3.5 ms, it increased two and three times, respectively. The crack elongation in the longitudinal direction occurred 5.8 times with time. Together, within the time of 3.5 ms, the equivalent stresses increased twice, after which the growth of the crack stopped due to the gas decompression. Moreover, studies on the growth of the crack-like defect in its tip area at the maximum pressure showed that additional considerations on the pressure on the crack edges led to an increment of 3.6% of the crack length. The results of this work can be used for the development of measurements for operating gas pipelines in the field of structural reinforcement.

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Section: Introductionmentioning

confidence: 99%

Finite-Element Modeling of the Dynamic Behavior of a Crack-like Defect in an Internally Pressurized Thin-Walled Steel Cylinder

Zhangabay,

Ibraimova,

Bonopera

et al. 2024

Applied Sciences

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show abstract

“…Different experimental approaches and tests, numerical analyses, and analytical methods were used. Knowledge of limit pressure (P L ) is an important issue in the field of pipeline design, integrity assessment, and maintenance management to achieve prolonged and reliable operation of pipelines [38,39]. Generally, failure pressure appears when the internal pipeline pressure exceeds the limit pressure value [40,41].…”

Section: Introductionmentioning

confidence: 99%

Assessment of corroded API 5L X52 pipe elbow using a modified failure assessment diagram

Muthanna

Bouledroua

Meriem-Benziane

et al. 2021

International Journal of Pressure Vessels and Piping

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Remaining Life Estimation of the High Strength Low Alloy Steel Pipelines by Using Response Surface Methodology

Zelmati

Ghelloudj

Hamed

et al. 2019

Lecture Notes in Mechanical Engineering

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Reliability estimation of pressurized API 5L X70 pipeline steel under longitudinal elliptical corrosion defect

Cited by 15 publications

References 19 publications

Finite-Element Modeling of the Dynamic Behavior of a Crack-like Defect in an Internally Pressurized Thin-Walled Steel Cylinder

Finite-Element Modeling of the Dynamic Behavior of a Crack-like Defect in an Internally Pressurized Thin-Walled Steel Cylinder

Assessment of corroded API 5L X52 pipe elbow using a modified failure assessment diagram

Remaining Life Estimation of the High Strength Low Alloy Steel Pipelines by Using Response Surface Methodology

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