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PSAM 16 Conference Paper Overview

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Lead Author: Theresa Stewart Co-author(s): Ali Mosleh, mosleh@ucla.edu
Probabilistic Physics of Failure Modeling of Non-metallic Pipelines in Oil and Gas Applications
The use of thermoplastic composite pipelines (TCP) has grown in recent years as an alternative to steel pipelines in the offshore oil and gas industry, due to thermoplastic composites having excellent corrosion resistance and greater flexibility than traditional thermoset-matrix composites. In order to understand the performance of these materials in the field, studies have derived experimental, analytical, and theoretical estimates of the mechanical and thermal properties of TCP in dry conditions, but studies in wet or acidic environments are currently restricted to the empirical domain. This study proposes a method to incorporate degradation of the mechanical properties of TCP resulting from exposure to environmental factors into a long-term mechanical analysis. To do this, the mechanical properties of the TCP will be updated at each time interval before evaluating the pipe under a range of combined pressure and bending loads using FEA analysis.

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