Comparative study of performance of neutral axis tracking based damage detection

11th International Conference on Damage Assessment of Structures

物理学;材料科学

Soman, R.^1 ; Malinowski, P.^1 ; Ostachowicz, W.^1,2

Institute of Fluid Flow Machinery, Polish Academy of Science, 14 Fiszera St., Gdansk

80-231, Poland^1

Faculty of Automotive and Construction Machinery, Warsaw University of Technology, 84 Narbutta St., Warsaw

02-524, Poland^2

关键词: Ambient conditions;    Comparative studies;    Damage Identification;    Damage-detection strategy;    Mode shape curvatures;    Presence of measurement noise;    Temperature conditions;    Vibration-based damage detection;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/628/1/012017/pdf
DOI  :  10.1088/1742-6596/628/1/012017

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

This paper presents a comparative study of a novel SHM technique for damage isolation. The performance of the Neutral Axis (NA) tracking based damage detection strategy is compared to other popularly used vibration based damage detection methods viz. ECOMAC, Mode Shape Curvature Method and Strain Flexibility Index Method. The sensitivity of the novel method is compared under changing ambient temperature conditions and in the presence of measurement noise. Finite Element Analysis (FEA) of the DTU 10 MW Wind Turbine was conducted to compare the local damage identification capability of each method and the results are presented. Under the conditions examined, the proposed method was found to be robust to ambient condition changes and measurement noise. The damage identification in some is either at par with the methods mentioned in the literature or better under the investigated damage scenarios.