Stress Analysis of API 5L X80 Pipe with Dent Defect Caused by Indenter Ripper Bucket Teeth

Dent defects are typical damage in subsea and land pipelines. Such damage threatens the safety of pipeline networks and reduces the efficiency and effectiveness of fluid transportation. Consequently, planned pipeline development must adhere to the Association of Adhering to the American Society of Mechanical Engineers (ASME) standards, particularly ASME B31.8. This study employs the finite element method to analyze failures in pipeline networks caused by dent defects in pipe segments, explicitly focusing on the API 5L X80 pipe. The API 5L X80 pipe segment design, created using Computer-Aided Design (CAD) software, is further analyzed using Ansys software. This analysis includes variations in the displacement and the number of indenters. The outputs of this study are Von-Mises Stress, deflection, and plastic strain. Analysis of dent defects, considering displacement variations at a specified depth for the indenter, revealed that the most significant stress occurs in the impact area between the indenter and the pipe. This stress value can be a reference for analyzing real-world pipe failures, especially in predicting the location of the most significant failure in pipeline construction.