کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
790761 1466096 2012 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reliability and failure pressure prediction of various grades of pipeline steel in the presence of corrosion defects and pre-strain
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Reliability and failure pressure prediction of various grades of pipeline steel in the presence of corrosion defects and pre-strain
چکیده انگلیسی

The reliability assessment of various grades of pipeline steel with corrosion defects was conducted through a finite element analysis (FEA) model. The failure pressure of pipelines was also evaluated by three industry models for comparison. Results demonstrate that the failure pressure of pipelines is reduced by the increasing corrosion depth and the decrease of the steel grade. Predictions by ASME B31G and the modified B31G models tend to be higher than FEA results for low grade steels, while the DNV model shows the close result to FEA. The predictive reliability by ASME B31G and the modified B31G decreases with the increases in corrosion depth and the steel grade. The geometry of corrosion defects affects remarkably the local stress and strain distributions, and plays a critical role in the failure pressure prediction. The applied strain in the longitudinal direction simulating the soil strain, regardless of tensile or compressive, would reduce the failure pressure of pipelines.


► Prediction of failure pressure of various grades of pipeline steel by finite element analysis.
► Determination of the effects of corrosion defect and soil strain on the failure pressure of pipelines.
► Evaluation of reliability of three well-developed industrial models for prediction of pipeline failure pressure.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Pressure Vessels and Piping - Volume 89, January 2012, Pages 75–84
نویسندگان
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