Unmeasured Strain Estimation on Bottom-Fixed Offshore Structures by Multimetric Data Fusion and Kalman Filtering with Data Buffer

Title
Unmeasured Strain Estimation on Bottom-Fixed Offshore Structures by Multimetric Data Fusion and Kalman Filtering with Data Buffer
Author(s)
RP Palanisamy; 심성한; 김원술; 이진학; 정원무
KIOST Author(s)
Yi, Jin Hak(이진학)Jeong, Weon Mu(정원무)
Publication Year
2017-06-07
Abstract
Offshore structures for tidal current energy converters and offshore wind turbines are always exposed to the much harsher environment with strong tidal current and wind loadings. While monitoring structural soundness and integrity is considered to be crucial to prevent catastrophic collapses and prolong lifetime, it is intrinsically challenging due to the difficulties in accessing to the critical structural members located under water for installing and repairing monitoring sensors and data acquisition systems. Virtual sensing technologies have the potential to alleviate such difficulties by estimating unmeasured structural responses at desired locations with other measured responses. This approach is particularly advantageous when (1) some sensors are malfunctioning and (2) sensor installation at critical members is difficult. Despite the usefulness of the virtual sensing, its performance and applicability for structural health monitoring of the offshore structures under non-stationary excitations has not been fully studied to date. This paper investigates the use of the virtual sensing for structural health monitoring of offshore structures for marine energy facilities rather for oil and gas exploitation. The Kalman filter is introduced for data fusion of different types of measured responses to produce estimated responses at structural members of interest. This study discusses how the non-stationary tidal current
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/23944
Bibliographic Citation
SMART 2017, pp.1 - 11, 2017
Publisher
ECCOMAS
Type
Conference
Language
English
Publisher
ECCOMAS
Related Researcher
Research Interests

Ocean Energy-Tidal Current Energy Converter System,Infrastructure Management-Structural Health Monitoring,Offshore Wind,해양에너지-조류발전시스템,시설물 유지관리-구조건전성 평가,해상풍력

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