Abstract

Composite materials are frequently used for pipes and pressure vessels onshore, offshore and downhole. They transport water, hydrocarbons, chemicals and hydrogen. Design standards exist and are being developed for new applications. A brief overview of standards for composite pipes will be given. However, good integrity management procedures, as known for metals, are still missing. This issue is addressed by the DNV led C-PIMS (Composite Pipeline Integrity Management) project.

This presentation gives an overview of recent work on Non Destructive Testing (NDT) combined with methods to evaluate the severity of the detected damage. Inspecting thick walled multi component composite structures is still a challenge and some promising results to solve this challenge are shown. Once damage is detected its influence on the strength and remaining lifetime needs to be evaluated. A finite element method based on fatigue progressive failure analysis will be shown. The results shall eventually be input for a digital twin of the components. While this work concentrates on offshore applications the results are general and can be applied for all structures.

Location: Building 19, Level 3, Hall 1-2.