Mechanical Engineering Department, Healthcare Engineering Innovation Center (HEIC), SAN Campus, Khalifa University, Abu Dhabi 127788, United Arab Emirates.
Mechanical Engineering Department, 301J ECB, University of Alaska Anchorage, 3211 Providence Dr., Anchorage, AK 99508, USA.
Sensors (Basel). 2022 Nov 4;22(21):8489. doi: 10.3390/s22218489.
A sensor for monitoring of the external corrosion of small-diameter aboveground oil and gas pipelines (called flowlines), based on fiber-optic strain sensing, is proposed. The working principle of our proposed sensor relies on the use of a pre-stressed sacrificial structure made of the same material as the pipeline and monitoring changes in the measured strain that occur due to deterioration caused by corrosion to the structure. We present the development of analytical equations that allow designing the sensor structure to achieve the desired strain values. The analysis was verified using commercial finite element analysis (FEA) software. The proposed sensor is simple and cost-effective and can be easily manufactured. It can be deployed on existing overground pipelines without any modification to the pipeline structure. While it is not capable of measuring the corrosion rate continuously, it can provide a measurement of the average corrosion rate over the life span of its sacrificial metal structure.
提出了一种基于光纤应变传感的小型架空油气管道（称为集气管线）外部腐蚀监测传感器。我们提出的传感器的工作原理依赖于使用与管道相同材料制成的预应力牺牲结构，并监测由于结构腐蚀引起的测量应变的变化。我们提出了分析方程的开发，允许设计传感器结构以达到所需的应变值。该分析使用商业有限元分析（FEA）软件进行了验证。所提出的传感器简单且具有成本效益，并且易于制造。它可以部署在现有的架空管道上，而无需对管道结构进行任何修改。虽然它不能连续测量腐蚀速率，但它可以提供其牺牲金属结构使用寿命内的平均腐蚀速率的测量。
