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Carbon fibre buckle arrestors for offshore pipelines
Applied Ocean Research ( IF 4.3 ) Pub Date : 2021-03-30 , DOI: 10.1016/j.apor.2021.102633
Mahmoud Alrsai , Hassan Karampour , Wayne Hall , Alex K. Lindon , Faris Albermani

Feasibility and efficiency of using carbon fibre reinforced polymer (CFRP) buckle arrestors in steel offshore pipelines with D/t of 28 and 40 are investigated using hyperbaric chamber tests. CFRP arrestors are manufactured using Prepreg (PP), Wet-Layup (WL) and Vacuum Bagging (VB) curing methods, with coarse and fine sand surface preparations. A parametric study is performed that outlines the performance of CFRP arrestors in various geometric configurations. Efficiency of CFRP arrestors using different manufacturing methods and various geometric configurations are calculated and compared with those of conventional steel buckle arrestors. It is shown that the efficiencies of CFRP arrestors vary between 0.74 and 1.0 for different manufacturing methods. Optimum efficiencies are obtained in the WL technique, using fine sanding, with CFRP arrestor of thickness twice the steel pipe-wall thickness, and fibres oriented in the hoop direction. Results show that at similar efficiencies, the CFRP arrestors can be much thinner than conventional slip-on or integral arrestors.



中文翻译:

海上管道用碳纤维带扣避雷器

D / t的钢质海上管道中使用碳纤维增强聚合物(CFRP)扣式避雷器的可行性和效率使用高压舱测试研究了28个和40个中的第一个。CFRP避雷器使用预浸料(PP),湿法铺层(WL)和真空袋装(VB)固化方法制造,并具有粗砂和细砂表面处理。进行了参数研究,概述了各种几何构型下CFRP避雷器的性能。计算出了使用不同制造方法和各种几何结构的CFRP避雷器的效率,并将其与常规钢扣避雷器的效率进行了比较。结果表明,对于不同的制造方法,CFRP避雷器的效率在0.74至1.0之间变化。在WL技术中,使用精细打磨可获得最佳效率,其CFRP避雷器的厚度是钢管壁厚的两倍,并且纤维沿环向定向。

更新日期:2021-03-31
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