会议论文详细信息
Baltic Polymer Symposium 2015
Damage Identification in Polymer Composite Beams Based on Spatial Continuous Wavelet Transform
材料科学;化学
Janeliukstis, R.^1 ; Rucevskis, S.^1 ; Wesolowski, M.^2 ; Kovalovs, A.^1 ; Chate, A.^1
Institute of Materials and Structures, Riga Technical University, Riga, Latvia^1
Department of Structural Mechanics, Faculty of Civil Engineering, Environment and Geodesy, Koszalin University of Technology, Koszalin, Poland^2
关键词: Continuous Wavelet Transform;    Continuous wavelet transforms;    Damage Identification;    Different wavelets;    Low velocity impact;    Mode shape curvatures;    Operational deflection shapes;    Statistical hypothesis;   
Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/111/1/012005/pdf
DOI  :  10.1088/1757-899X/111/1/012005
学科分类:材料科学(综合)
来源: IOP
PDF
【 摘 要 】

In present paper, the damage identification in two polymer composite beams is shown with two methods - spatial continuous wavelet transform (CWT) and mode shape curvature squares (MSCS) using experimental data from operational deflection shapes (ODS). Damage was introduced via low velocity impact drop tower. Statistical hypothesis approach was used to calculate standardized damage index (SDI) that served as a damage indicator for both methods. In order to truncate smaller magnitude SDI peaks, a threshold of 1.28, corresponding to the confidence level of 90%, was applied. Damage estimate reliability (DER) vs wavelet scale test was performed in order to quantify the reliability of damage detection in terms of percentage at each scale parameter. Overall, 78 different wavelet functions were tested. Results indicate that both methods are capable to locate the area of damage.

【 预 览 】
附件列表
Files Size Format View
Damage Identification in Polymer Composite Beams Based on Spatial Continuous Wavelet Transform 871KB PDF download
  文献评价指标  
  下载次数:12次 浏览次数:16次