Damage detection in wind turbine gearbox using modal strain energy. (January 2020)

• Record Type: Journal Article
• Authors: Dewangan, Palash; Parey, Anand; Hammami, Ahmed; Chaari, Fakher; Haddar, Mohamed
• Is Part Of: Engineering failure analysis. Volume 107(2020)
• Publication Date: 2020-01
• Subjects: Wind turbine gearbox -- Modal strain energy -- Damage detection -- Modal strain energy change -- Damage index; System failures (Engineering) -- Periodicals; Fracture mechanics -- Periodicals; Reliability (Engineering) -- Periodicals; Pannes -- Périodiques; Rupture, Mécanique de la -- Périodiques; Fiabilité -- Périodiques; Fracture mechanics; Reliability (Engineering); System failures (Engineering); Periodicals; Electronic journals; 620.112
• DOI: 10.1016/j.engfailanal.2019.104228
• Languages: English
• ISSNs: 1350-6307

Abstract

Highlights: Modal strain energy (MSE) based damage detection is performed. Modal strain energy change (MSEC) and damage index (DI) indicators are used to locate the damage. Comparison of MSEC and DI is made to assess the accuracy and effectiveness of the indicators. Abstract: Damage detection in complex machinery such as Wind Turbine Gearbox (WTG) is a challenging task due to its complex dynamic behavior. However, obtaining modal properties for such a system is not arduous. In this paper, damage detection of WTG is performed using Modal Strain Energy (MSE). Modal analysis of a three-stage WTG is carried out, and modal parameters are used to calculate MSE in various components of WTG. MSE distribution analysis of a healthy WTG is performed for the dynamic characterization of the modes. Two damage indicators, namely Modal Strain Energy Change (MSEC) and Damage Index (DI) based on MSE, are used to indicate the damage. A comparison is made between these two indicators for assessing the capability to locate the damage accurately and effectively. It is observed that DI locates damage more accurately compared to MSEC.