Evaluation of the Kinetics of Fracture of Elements of a Gas Pipeline After Operation

被引：5
|
作者：
Kryzhanivs'kyi, E. I. [1 ]
Hrabovs'kyi, R. S. [1 ]
Fedorovych, I. Ya. [1 ]
Barna, R. A. [2 ]
机构：
[1] Natl Tech Univ Oil & Gas, Ivano Frankivsk, Ukraine
[2] Ukrainian Natl Acad Sci, Karpenko Physicomech Inst, Lvov, Ukraine
来源：
MATERIALS SCIENCE | 2015年 / 51卷 / 01期
关键词：
gas pipeline; stress-corrosion cracklike defects; corrosion-fatigue cracks; through cracks; cracks of critical sizes; STEEL;
D O I：
10.1007/s11003-015-9804-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The efficiency of the numerical-analytic approach to the evaluation of the kinetics and changes in the shapes of corrosion fatigue cracklike defects in the course of their propagation in the wall of the pipeline is experimentally demonstrated. An experimental-numerical method is proposed for the estimation of the conditions of fracture of gas pipelines after long-term operation with regard for the influence of the expected evolution of in-service defects in given media and the degradation of the properties of pipe metal. We determine the conditions under which the catastrophic failures of pipes of the "Kyiv-Western Ukraine" gas main become possible after long-operation.
引用
收藏
页码：7 / 14
页数：8
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