Fracture behavior of cracked full scale steel pipes used for gas and petroleum industries

الموضوعات

علوم تطبيقية وتكنولوجية

الملخص

The fracture toughness of pipeline steel grade X65 was investigated utilizing linear elastic fracture mechanics analysis, K IC testing according to non-standards techniques, as well as the elastic-plastic fracture mechanics analysis (J-Integral and crack opening displacement COD methods). The fracture toughness tests were conducted at full scale pipe used for gas and oil industry, circumferential surface crack were introduced to nine pipe specimens with different depths, crack/notch depths were selected to cover wide range of remaining material of the original pipe thickness, the original pipe thickness remain unchanged, a special fixture was manufactured to perform the experimental works, plane strain condition was confirmed by using plug insert inside the pipe specimen under the introduced circumferential surface crack. While for elastic-plastic fracture analysis a circumferential through-wall-cracked (TWC) pipes subjected to pure bending experiments were conducted on four pipe specimens, pipe thickness was reduced to 5 mm to meet the capacity of MTS machine used to perform the experimental works, in this analysis different parameters were measured. Tensile properties of the X65 steel as well as the chemical composition were measured and compared with that provided at inspection certificate and API standards, the results from experimental work were very close. Beside experimental work finite element method were used for analysis. Finite element modelling was used for comparison with experimental results. ABAQUS is used for FEM calculations for stresses distribution along the crack area, the simulation results were observed to have a good agreement with the experimental results.

روابط وملفات

التعريف والنوع

رقم الوثيقة

0cc44e78-3022-47c9-8c80-4793809e3224

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

8503_1.pdf

بيانات النشر

ترجمة العنوان

سلوك الانهيار بالكسر للانابيب المصنوعة من الصلب والمستخدمة في صناعات الغاز والبترول

ألقاب المؤلفين

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اللغة

English

المصدر والدورية

اسم المصدر

Fracture behavior of cracked full scale steel pipes used for gas and petroleum industries

المحتوى والصفحات

عدد الصفحات

0

إشراف وإعداد

الإشراف

عبدالحميد إسماعيل مراد

الإعداد

جعفر يوسف الطراونة

الاقتباسات الببليوغرافية