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http://dx.doi.org/10.5394/KINPR.2015.39.3.179

A Study on Damage Detection of Production Riser  

Je, Hyun-Min (Division of Ocean Architectural Engineering, Korea Maritime and Ocean University)
Park, Soo-Yong (Division of Architecture and Ocean Space, Korea Maritime and Ocean University)
Publication Information
Journal of Navigation and Port Research / v.39, no.3, 2015 , pp. 179-184 More about this Journal
Abstract
The purpose of this study is to provide appropriate methodology to ensure the safety and integrity of the production riser in offshore structure. In order to select integrity estimation methodology for production riser, level I and II Non-destructive Damage Evaluation (NDE) methods that were applied to existing structures are classified and reviewed. Numerical analysis is performed to verify the applicability and capability on damage detection of reviewed methods. As a result, the damage detection methodology using modal strain energy is more sensitive in detection of the damage than other methods. In practice, the number of sensors is limited due to the environmental and financial conditions. The impact on damage detection performance by reducing the number of sensors is systematically investigated through a series of numerical analyses and the results are discussed. The optimal number of sensor for the integrity estimation of production riser is recommended.
Keywords
structural integrity estimation; offshore structure; production riser; damage detection; damage index;
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