Abstract
Pipeline structural systems face challenges due to varying loading conditions, which can lead to sudden failures caused by fractures. Enhancing fracture toughness is crucial for improving structural performance. Metallic coatings offer a promising solution to increase pipeline reliability. Preventive maintenance methods are essential for ensuring structural integrity and safety, considering factors like size, weight, and material properties. This study followed ASTM standards to model and simulated a sample using API X80 steel. A 50μm thick ternary coating of Nickel Phosphorous - Graphene (NiP-G) was applied, and simulations were conducted for tensile, single-edge crack, and Charpy V-notch tests. Finite Element Analysis compared the coated and uncoated models, evaluating tensile strength, toughness, and stress intensity factor. Results indicated a 12.28% higher impact absorbed energy in the Charpy V-notch test and a 0.7% higher load-bearing capacity in the tensile test for the coated specimen compared to the uncoated specimen.
