Repair of through thickness corrosion/leaking defects in corroded pipelines using Fiber Reinforced Polymer overwrap

International Conference on Recent Advances in Materials & Manufacturing Technologies

Nitheesh Kumar, P.^1 ; Khan, Vishwas Chandra^1 ; Balaganesan, G.^2 ; Pradhan, A.K.^1 ; Sivakumar, M.S.^2

School of Mechanical Sciences, Indian Institute of Technology Bhubaneswar, Odisha

752 050, India^1

Department of Applied Mechanics, Indian Institute of Technology Madras, Tamil Nadu

600 036, India^2

关键词: Composite wraps;    Corroded pipelines;    Failure pressure;    Fiber reinforced polymers;    Glass/epoxy composite;    High pressure;    Optimum configurations;    Through-thickness;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/346/1/012016/pdf
DOI  :  10.1088/1757-899X/346/1/012016

来源: IOP

【 摘 要 】

The present study is concerned with the repair of through thickness corrosion or leaking defects in metallic pipelines using a commercially available metallic seal and glass/epoxy composite. Pipe specimens are made with three different types of most commonly occurring through thickness corrosion/leaking defects. The metallic seal is applied over the through thickness corrosion/leaking defect and it is reinforced with glass/epoxy composite overwrap. The main objective of the metallic seal is to arrest the leak at live pressure. After reinforcing the metallic seal with glass/epoxy composite overwrap, the repaired composite wrap is able to sustain high pressures. Burst test is performed for different configurations of metallic seal and optimum configuration of metallic seal is determined. The optimum configurations of metallic seal for three different types of through thickness corrosion/leaking defects are further reinforced with glass/epoxy composite wrap and experimental failure pressure is determined by performing the burst test. An analytical model as per ISO 24817 has been developed to validate experimental results.