Dynamic axial crack propagation in steel line pipes. Part II: Theoretical developments

被引：6

作者：

Murtagian, GR ^{[1
]}

Ernst, HA ^{[1
]}

机构：

[1] TENARIS Siderca Ctr Ind Res, Dept Mech Technol, RA-2804 Campana, Buenos Aires, Argentina

来源：

ENGINEERING FRACTURE MECHANICS | 2005年 / 72卷 / 16期

关键词：

dynamic fracture; leak before break; steel pipelines;

D O I：

10.1016/j.engfracmech.2005.03.004

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Based on the momentum balance principle a new governing equation for the dynamic crack propagation is presented. Through the combination of the experimental data obtained in Part I of this research and the model here developed, the quantitative prediction of the dynamic crack evolution as a function of the time, the material dynamic fracture properties, including pipeline limiting crack speed, and the conditions to obtain leak before break are obtained. The use of this test/analysis methodology allows the prevention of unstable axial crack propagation in pipelines, assuring their structural integrity. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：2535 / 2548

页数：14

共 15 条

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