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首页> 外文会议>ASME international pipeline conference 2008 >EVALUATING THE EFFECTS OF WRINKLE BENDS ON PIPELINE INTEGRITY
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EVALUATING THE EFFECTS OF WRINKLE BENDS ON PIPELINE INTEGRITY

机译：评估弯折弯头对管道完整性的影响

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Concerns exist among the pipeline industry about the effects of wrinkle bends on the long-term integrity of pipelines. For this reason, a study was sponsored to assess the relative severity of wrinkle bends present in the El Paso pipeline system. The study involved a combination of full-scale cyclic pressure fatigue tests, along with finite element analysis, to determine cycles to failure. Strain gages were installed on select samples to determine alternating stresses. Also included in the study was installation of E-glass composite repair materials (Armor Plate~® Pipe Wrap) on selected wrinkles to determine the potential for life extension considering the presence of reinforcement. The study helped in developing "in-the-ditch" evaluation criterion and a tool to determine the severity of a specific wrinkle bend based on geometric parameters including wrinkle height and length. The effects of metal loss due to corrosion were also considered. Additionally, the experimental results demonstrated that composite materials can extend the fatigue life of wrinkle bends.
机译：管道行业中存在折皱对管道长期完整性影响的担忧。因此，赞助了一项研究以评估El Paso管道系统中出现的皱纹弯曲的相对严重程度。该研究涉及全面的循环压力疲劳测试，以及有限元分析，以确定失效周期。将应变计安装在选定的样品上以确定交替应力。该研究还包括在选定的皱纹上安装电子玻璃复合修复材料（Armor Plate〜®管道包裹物），以考虑存在增强物时确定延长寿命的可能性。该研究帮助开发了“沟内”评估标准和一种工具，该工具可基于包括皱纹高度和长度在内的几何参数确定特定皱纹弯曲的严重程度。还考虑了由于腐蚀造成的金属损失的影响。此外，实验结果表明，复合材料可以延长皱纹弯曲的疲劳寿命。

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