An Improved Modal Strain Energy Method for Damage Detection in Offshore Platform Structures
The development of robust damage detection methods for offshore structures is crucial to prevent catastrophes caused by structural failures. In this research, we developed an Improved Modal Strain Energy (IMSE) method for detecting damage in offshore platform structures based on a traditional modal strain energy method (the Stubbs index method). The most significant difference from the Stubbs index method was the application of modal frequencies. The goal was to improve the robustness of the traditional method. To demonstrate the effectiveness and practicality of the proposed IMSE method, both numerical and experimental studies were conducted for different damage scenarios using a jacket platform structure. The results demonstrated the effectiveness of the IMSE method in damage location when only limited, spatially incomplete, and noise-polluted modal data is available. Comparative studies showed that the IMSE index outperformed the Stubbs index and exhibited stronger robustness, confirming the superiority of the proposed approach.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/16719433
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Supplemental Notes:
- Copyright © 2016, Harbin Engineering University and Springer-Verlag Berlin Heidelberg. The contents of this paper reflect the views of the author[s] and do not necessarily reflect the official views or policies of the Transportation Research Board or the National Academy of Sciences.
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Authors:
- Li, Yingchao
- Wang, Shuqing
- Zhang, Min
- Zheng, Chunmei
- Publication Date: 2016-6
Language
- English
Media Info
- Media Type: Web
- Features: References;
- Pagination: pp 182-192
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Serial:
- Journal of Marine Science and Application
- Volume: 15
- Issue Number: 2
- Publisher: Harbin Engineering University
- ISSN: 1671-9433
- EISSN: 1993-5048
- Serial URL: http://link.springer.com/journal/11804
Subject/Index Terms
- TRT Terms: Detection and identification; Failure; Modal analysis; Offshore platforms; Offshore structures; Strain (Mechanics); Structural analysis; Structural deterioration and defects
- Subject Areas: Bridges and other structures; Marine Transportation; Vehicles and Equipment;
Filing Info
- Accession Number: 01600598
- Record Type: Publication
- Files: TRIS
- Created Date: May 26 2016 2:50PM