Evaluation of corrosion defects in oil pipelines based on the approaches of fracture mechanics

Žiliukas, A.; Janutėnienė, Jolanta; Nykyforchyn, H. М.; Bereisa, M.

doi:10.1007/s11003-011-9332-6

Cited by 2 publications

(5 citation statements)

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“…The problems of corrosion and corrosion fatigue of pipeline steels are dealt with in the works of A. Marshakova [13] and P. Marcus [14], where physical, chemical and electrochemical fundamentals associated with this problem are provided. G. Nykyforchyn [15] and co-workers proposed a method for evaluating the operational degradation of materials of conduits operated on continuous bases. One should also mention research by E. Kryzhanivskyy [16] that is dedicated to improving oil pipelines' resource.…”

Section: Analysis Of Literature Datamentioning

confidence: 99%

Peculiarities of corrosion degradation of steel of oil pipelines

Luzhetskyy

2014

EEJET

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Здійснено інженерні оцінки швидкості корозійного руйну-вання нафтопроводів, що враховує як механічні, так і фізи-ко-хімічні параметри взаємодії деформованого металу з робочим середовищем. Визначено характеристики циклічної корозійної тріщиностійкості металу труби експлуатованих нафтопроводів із урахуванням дії експлуатаційних чинників. Встановлено, що водні корозійні середовища суттєво вплива-ють на процес поширення втомної тріщини у досліджуваних сталях Ключові слова: нафтопровід, тріщиноподібний дефект, діаграма циклічної корозійної тріщиностійкості, коефіцієнт інтенсивності напружень Выполнены инженерные оценки скорости коррозионного разрушения нефтепроводов, учитывающие как механические, так и физико-химические параметры взаимодействия дефор-мированного металла с рабочей средой. Определены характе-ристики циклической коррозионной трещиностойкости метал-ла трубы эксплуатируемых нефтепроводов с учетом действия эксплуатационных факторов. Установлено, что водные корро-зионные среды существенно влияют на процесс распростране-ния усталостной трещины в исследуемых сталях Ключевые слова: нефтепровод, трещиноподобный дефект, диаграмма циклической коррозионной трещиностойкости, коэффициент интенсивности напряжений

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Section: Analysis Of Literature Datamentioning

confidence: 99%

Peculiarities of corrosion degradation of steel of oil pipelines

Luzhetskyy

2014

EEJET

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“…Additionally, Žiliukas et. al [130] found that the maximum decrease in the thickness of the pipe wall after 10 years of operation is no more than 22%.…”

Section: Discussionmentioning

confidence: 98%

“…al [80] and Žiliukas et. al [130] have both attempted to evaluate crack-in-corrosion and corrosion defects (respectively) based on fracture mechanics approach. Bedairi et.…”

Section: Discussionmentioning

confidence: 99%

“…al [80] focuses more on failure pressure and model cracks as elliptical pits while Žiliukas et. al [130] demonstrated that these corroded areas were assumed to be cracks which then use J-integral to characterise them.…”

Section: Discussionmentioning

confidence: 99%

“…Due to the interest to check out the severity of such CIC defects on these offshore pipelines and as mentioned by Žiliukas et. al [130], shallow corrosions (less than 30% of pipeline thickness) were considered in most of the cases.…”

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Electric-plastic fracture mechanics investigation on offshore structures and materials

Ariffin¹

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Failure of offshore structures and materials, with complex defects such as multiple cracks and crack-in-corrosion (CIC) that are exposed to extreme tension and bending loads accompanied by high internal pressure, could pose serious complications if not assessed accurately. Existing failure-fracture assessment procedures widely used in the industry are not accurate for situations with large plastic deformation as they are load-controlled based mainly on linear elastic fracture mechanics. In addition, there are no handbook solutions and standards on CIC cases. The thesis demonstrates the novel and high potential applications of nonlinear elastic-plastic fracture mechanics methodologies and assessment protocols to assessing 3-D crack-like defects in offshore structures and pipelines under large strain loading. This project is also a pioneering attempt to use full-field measurement technique (using Thermoelastic Stress Analysis (TSA) and Digital Image Correlation (DIC)) for failure analysis of corroded and CIC offshore materials which might allow for in-situ fracture assessment of defects. Currently there is no standard technique to obtain the J-Firstly, I would like to express my deepest gratitude to my supervisor, Assoc. Prof. Xiao Zhongmin, for his patient guidance, enthusiastic encouragement and useful advice in this beginning of my graduate research. In addition, I would like to show my greatest appreciation to my co-supervisor, Prof. Ajit R. Shenoi, for his guidance while I was in University of Southampton. Next, I would like to thank Dr. Wang Yikun for her guidance in doing my corrosion experiments and all the advice she gave me to ensure that I was able to do the experiments and testing. In addition, I would like to express my gratitude to TSLR lab personnel and peers especially Dr.

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Evaluation of corrosion defects in oil pipelines based on the approaches of fracture mechanics

Cited by 2 publications

References 10 publications

Peculiarities of corrosion degradation of steel of oil pipelines

Peculiarities of corrosion degradation of steel of oil pipelines

Electric-plastic fracture mechanics investigation on offshore structures and materials

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