A modified harmony search approach on structural identification and damage detection of wind turbine supporting structures

• Main Authors: Mahmoud M. Jahjouh, Udo Nackenhorst
• Format: Article
• Language: English
• Published: JVE International 2016-02-01
• Series: Journal of Vibroengineering
• Subjects: harmony search; optimization; identification; damage detection; wind turbine
• Online Access: https://www.jvejournals.com/article/16694

Although numerous structural identification methods have been proposed, most of them are problem dependent, rely on classical approaches based on mathematical concepts, and/or are based on changes in modal characteristics that are not sensitive to damage. This study aims to utilize a metaheuristic modified optimization algorithm for the identification of damage in a numerically modeled 5-MW reference turbine. A variety of damage severities, sensor numbers and noise percentages were investigated. The results show that the presented algorithm’s identification accuracy is not affected by the magnitude of damage whereas sensor configuration and noise severity do have a significant effect. The satisfying results encourage considering its application on in-situ structural identification tasks based on experimental measurements.