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http://dx.doi.org/10.5050/KSNVE.2012.22.7.667

Damage Estimation Method for Monopile Support Structure of Offshore Wind Turbine  

Kim, Sang-Ryul (한국기계연구원 기계시스템안전연구본부)
Lee, Jong-Won (남서울대학교 건축공학과)
Kim, Bong-Ki (한국기계연구원 기계시스템안전연구본부)
Lee, Jun-Shin (한국전력공사 전력연구원)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.22, no.7, 2012 , pp. 667-675 More about this Journal
Abstract
A damage estimation method for support structure of offshore wind turbine using modal parameters is presented for effective structural health monitoring. Natural frequencies and mode shapes for a support structure with monopile of an offshore wind turbine were calculated considering soil condition and added mass. A neural network was learned based on training patterns generated by the changes of natural frequency and mode shape due to various damages. Natural frequencies and mode shapes for 10 prospective damage cases were input to the trained neural network for damage estimation. The identified damage locations and severities agreed reasonably well with the accurate damages. Multi-damage cases could also be successfully estimated. Enhancement of estimation result using another parameters as input to neural network will be carried out by further study. Proposed method could be applied to other type of support structure of offshore wind turbine for structural health monitoring.
Keywords
Damage Estimation; Monopile; Support Structure; Offshore Wind Turbine; Modal Parameter;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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