STUDY ON MATERIAL DAMAGE CHARACTERISTICS OF WIND TURBINE BLADES BASED ON ACOUSTIC EMISSION b-VALUE ANALYSIS

被引：0
|
作者：
Liao L. [1 ]
Lu Z. [1 ]
Ye H. [1 ]
Huang B. [1 ,2 ]
Shu W. [1 ]
Zhang Z. [1 ]
机构：
[1] School of Energy and Power Engineering, Changsha University of Science and Technology, Changsha
[2] Engineering College, University of South Australia, Adelaide
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2024年 / 45卷 / 02期
关键词：
acoustic emission; b-value analysis; composite materials; wind turbine blades;
D O I：
10.19912/j.0254-0096.tynxb.2022-1686
中图分类号：
学科分类号：
摘要：
Damage to glass fiber epoxy resin reinforced composite（GFRP），which is the main material of wind turbine blades，will lead to a reduction in blade life and even fracture，so damage detection must be carried out. The acoustic emission method can be used to analyze the damage characteristics of GFRP composite materials and realize online monitoring of blade performance. In this paper，the acoustic emission b-value feature is used to characterize the damage degree of GFRP，and the acoustic emission parameters are clustered by principal component analysis and the k-means++ algorithm to analyze the damage mode of GFRP. The results are as follows：1）The b-value analysis of the whole acoustic emission event shows that the b-value of the GFRP sample shows a significant downward trend before fracture，indicating that the change rate of the b-value can be used as an early warning signal of material fracture. 2）According to the proportion of nine acoustic emission parameters in the principal component analysis，the amplitude and peak frequency of the AE signal are selected. Through the k-means++ algorithm to cluster the characteristic parameters，it is found that the acoustic emission signals in the stretching process are divided into four clusters，and the characteristic frequency of each cluster is found. 3）The tensile fracture of the GFRP specimen is observed by scanning electron microscope（SEM），and four damage modes corresponding to matrix cracking，fiber/matrix debonding，delamination and fiber fracture are obtained. The method based on acoustic emission b-value analysis is applicable to research on GFRP damage characteristics and can be popularized in the field of wind turbine blade damage detection. © 2024 Science Press. All rights reserved.
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页码：172 / 180
页数：8
相关论文
共 31 条
  • [1] ZHOU S X，, JING X J，, Et al., Damage detection techniques for wind turbine blades： a review［J］, Mechanical systems and signal processing, 141, (2020)
  • [2] ZHONG S C，, LIN J W，, Et al., Advances， limitations and prospects of nondestructive testing and evaluation of thick composites and sandwich structures： a state-of-the-art review［J］, Composite structures, 256, (2021)
  • [3] AHMED O, TRAN M V，, Et al., Advancements in fiber- reinforced polymer composite materials damage detection methods： towards achieving energy- efficient SHM systems［J］, Composites part B：engineering, 223, (2021)
  • [4] SAEEDIFAR M，, ZAROUCHAS D., Damage characterization of laminated composites using acoustic emission：a review［J］, Composites part B：engineering, 195, (2020)
  • [5] GUTENBERG B., The energy of earthquakes［J］, Quarterly Journal of the Geological Society, 112, 1/2/3/4, pp. 1-14, (1956)
  • [6] SHIOTANI T，, OHTSU M，, IKEDA K., Detection and evaluation of AE waves due to rock deformation［J］, Construction and building materials, 15, 5/6, pp. 235-246, (2001)
  • [7] WANG D W，, Et al., Damage monitoring of masonry structure under in situ uniaxial compression test using acoustic emission parameters［J］, Construction and building materials, 215, pp. 812-822, (2019)
  • [8] DONG L J, ZHANG L Y，, LIU H N，, Et al., Acoustic emission b value characteristics of granite under true triaxial stress［J］, Mathematics, 10, 3, (2022)
  • [9] Barely visible impact damage assessment in laminated composites using acoustic emission［J］, Composites part B：engineering, 152, pp. 180-192, (2018)
  • [10] Use of acoustic emission b（Ib）values to quantify damage in composites［J］, Composites communications, 22, (2020)
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