Impact of Gas Hydrates and Long-Term Operation on Fatigue Characteristics of Pipeline Steels

被引：7

作者：

Poberezhny, Lyubomyr ^{[1
]}

Maruschak, Pavlo ^{[2
]}

Hrytsanchuk, Andrij ^{[1
]}

Poberezhna, Liubov ^{[3
]}

Prentkovskis, Olegas ^{[4
]}

Stanetsky, Andrij ^{[1
]}

机构：

[1] Ivano Frankivsk Natl Tech Univ Oil & Gas, Ivano Frankivsk, Ukraine

[2] Ternopil Ivan Puluj Natl Tech Univ, Ternopol, Ukraine

[3] Ivano Frankivsk Natl Med Univ, Ivano Frankivsk, Ukraine

[4] Vilnius Gediminas Tech Univ, Vilnius, Lithuania

来源：

TRANSBALTICA 2017: TRANSPORTATION SCIENCE AND TECHNOLOGY | 2017年 / 187卷

关键词：

transportation systems; main pipeline; fatigue; damage;

D O I：

10.1016/j.proeng.2017.04.386

中图分类号：

U [交通运输];

学科分类号：

08 ; 0823 ;

摘要：

Fatigue tests of specimens from pipe steel 17GS and steel 20 after exposure to gas hydrates are performed. A decrease in lifetime was found to be from 15 to 25%, and given the degradation of the material it was 2.5 times more, indicating the need to consider the hydrated factor in assessing the residual life. Based on the results of fracture toughness tests, a critical crack size was identified for specimens from steel 20. It is shown that the critical crack size decreases by 21% for the pipes after 31 years of operation. The yield stress of test specimens was defined by the proposed method. The results are generally consistent with the industrial practice, the yield stress decreased only slightly over the entire service lifetime. (C) 2017 The Authors. Published by Elsevier Ltd.

引用

页码：356 / 362

页数：7

共 7 条

[1]

Dotsenko E. R., 2009, Patent of Ukraine, Patent No. 87240

[2]

Grabovskyi R. S., 2015, SCI B IVANO FRANKIVS, V38, P46

[3] Peculiarities of the static and dynamic failure mechanism of long-term exploited gas pipeline steel [J].

Maruschak, Pavlo ;

Bishchak, Roman ;

Prentkovskis, Olegas ;

Poberezhnyi, Lyubomyr ;

Danyliuk, Iryna ;

Garbincius, Giedrius .

ADVANCES IN MECHANICAL ENGINEERING, 2016, 8 (04) :1-8

[4] FATIGUE AND BRITTLE FRACTURE OF CARBON STEEL OF GAS AND OIL PIPELINES [J].

Maruschak, Pavlo ;

Poberezhny, Lyubomyr ;

Pyrig, Taras .

TRANSPORT, 2013, 28 (03) :270-275

[5]

Mazur M. P., 2016, P 13 INT C PROBL COR, P338

[6] Character of the Relationship Between the Microstructure and Physicomechanical Properties of Steels of Long-Term Operation [J].

Myndyuk, V. D. ;

Karpash, O. M. ;

Karpash, M. O. .

MATERIALS SCIENCE, 2014, 49 (04) :560-564

[7] Modeling the Contribution of Gas Hydrate to Corrosion Rate Along the Subsea Pipelines [J].

Obanijesu, E. O. ;

Pareek, V. ;

Tade, M. O. .

PETROLEUM SCIENCE AND TECHNOLOGY, 2014, 32 (21) :2538-2548

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