Abstract

Determining the creep function of polymer pipes is crucial to accurately predicting hydraulic behaviour during transient events. This research presents a novel multi-objective framework that uses transient frequency and time domain pressure data to determine the creep function parameters for a viscoelastic pipeline, accounting for the potential presence of leaks. The innovation of this approach is attributed to employing two pressure signal indicators unaffected by leakage: the resonance frequencies and the zero crossing times, which refer to the moments when the transient pressure signal crosses the steady-state pressure signal. To ensure the efficiency and uniqueness of using these determinants to estimate the accurate creep function parameters, a multi-objective optimization problem is defined and applied to identify the creep function parameters inversely. The developed approach has undergone validation and analysis through different intact and leaky experimental tests and numerical simulations on a high-density polyethylene pipeline. The results and findings confirm that the proposed method could precisely determine the creep function of polymer pipes.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.