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管道肘部腐蚀模拟用于用纤维布拉格格的应变监测

Kaimin Yu¹, Zixuan Peng², Yuanfang Zhang²

¹School of Marine Equipment and Mechanical Engineering, Jimei University, Xiamen 361021, China.

|September 28, 2024

概括

这项研究引入了纤维布拉格格 (FBG) 传感器,用于实时管道肘部腐蚀监测. 曲应变准确地表明腐蚀程度,指导最佳的传感器放置用于预测性维护.

科学领域:

材料科学材料科学材料科学
机械工程机械工程
结构健康监测结构健康监测

背景情况:

传统的非破坏性测试方法缺乏对管道肘部的实时腐蚀监测能力.
需要一个强大的数学模型来将应变与肘部腐蚀相关联.

研究的目的:

开发和验证一个有限元模型,用于分析腐蚀的管道肘部的应变变化.
建立一种可靠的实时腐蚀监测方法,使用纤维布拉格格 (FBG) 应变传感器.

主要方法:

用有限元建模来模拟在液压压力和曲负载下管道肘部的应变变化.
使用圆圈和轴向应变之间的区别来隔离温度变化对腐蚀的影响.
腐蚀程度通过分析圆圈和轴向应变之间的差异来量化.

主要成果:

在水立压下,应变差异与腐蚀增加的相关性很小.
在曲时刻负荷下,应变差异与腐蚀程度成比例增加.
仅仅由曲时刻负载引起的应变有效地描述了腐蚀程度.

结论:

曲时刻引起的应变是管道肘部腐蚀的可靠指标.
对FBG传感器的最佳位置是在管道肘部的外置处,以获得最大的应变灵敏度.
这些发现支持开发基于FBG的实时腐蚀跟踪和管道预测性维护系统.

关键词:

腐蚀腐蚀是一种腐蚀.非破坏性测试是指非破坏性测试.光纤传感器是一种光纤传感器.管道肘部肘部管道肘部压力压力压力压力

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