Numerical and experimental analysis of loctite adhesive composite wrapping on EN 10028 steel pipe

Abstract

The metal pipes are suitably used from many years ago for Oil & gas refinery process, Petroleum transportation, Power generation, water supply for both domestic and industrial application etc. The metal pipes are developed corrosion at different environments, basically in the presence of salty water and Sulphur ingress media which corroded the pipes and equipment by different corrosion criteria. Every year, industry schedule turnaround and spend millions of dollars to installing new piping and equipment to reduce the risk of assets , humanity and environment damage. Hydratight joint venture with Henkel to resolve this issue by using adhesive composite wrapping methodology and reduce the major plant shutdown. In this research carbon alloy steel (EN 10028 – P235GH) of DN 200 pipe (219 mm outer diameter) used for loctite adhesive composite wrapping. Before performing the composite wrapping, numerically analyze the hoop stress and strength by using ANSYS 16.0. The numerical analysis of composite wrapped pipe has higher hope stress developed which confirm higher burst pressure. The steel pipe composite wrapping performed based on ISO 24,817 annex c and tested at 314 barg hydrostatic pressure to be utilize for high application services of crude transportation and other process. The numerical and FEA (ANSYS 16) performed for new steel pipe, defective steel pipe and composite-repaired pipe. The results of composite-repaired pipe shows that the burst pressure increased by 20% and reduced strain on defective region. The loctite adhesive used for the wrapping. It’s also shows better results on composite wrapped pipe tensile testing during compression testing. These findings are very useful for steel composite warping by using loctite adhesive with repair design procedures.