Fatigue Life and Safety Assessment for Pipelines with Defects

摘要：

It is impossible to keep petroleum and natural gas transmission pipelines flee from defects in the manufacturing, installation and servicing processes. The damage might endanger the safety of pipelines and even shorten their service life. Gas or petroleum release due to defects may jeopardise the surrounding ecological environments with associated economic and life costs. Pre-tensile deformation of steel is employed to experimentally simulate the influence of dents on the fatigue life. The fatigue life of pipeline steel with defects includes two parts: fatigue crack initiation life and fatigue crack propagation life. In the present study, experimental investigations were carried out on the fatigue characteristics of X60 pipeline steel after different degrees of pre-tension deformation (5％, 10％ and 15％). The result is expected to be beneficial to the understanding of the effect of damage on the safety of pipelines and fatigue life prediction.

关键词： fatigue life safety assessment pipeline pre-deformation

作者: CHEN Meibao JIANG Yurong

作者单位: School of Safety Engineering,Chongqing University of Science and Technology,Chongqing 401331,China;C School of Safety Engineering,Chongqing University of Science and Technology,Chongqing 401331,China

会议类型: 国际会议

会议名称: The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)

会议地点: 北京

会议语种:英文

页码: 1919-1922

在线出版日期: 2008-09-24（万方平台首次上网日期，不代表论文的发表时间）