Quantitative identification of delamination at different interfaces   using guided wave signals in composite laminates

doi:10.1177/0731684415593815

CORC > 北京大学 > 工学院

	Quantitative identification of delamination at different interfaces using guided wave signals in composite laminates
	Li, Bing ; Ye, Lin ; Li, Zheng ; Ma, Zhaoyang ; Kalhori, Hamed
刊名	JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
	2015
关键词	Lamb waves composite laminates delamination identification mode conversion piezoelectric actuator TIME-OF-FLIGHT LAMB WAVES DAMAGE IDENTIFICATION INSPECTION VELOCITY ELEMENT
DOI	10.1177/0731684415593815
英文摘要	This article presents the development of a quantitative method for identifying interfacial delamination in composite laminates. Splitting and merging occur as Lamb waves pass through the delamination. It is demonstrated from the dispersion curve of Lamb waves that the group velocities of A(0) and S-0 modes in the sub-laminates above and below the delamination area are different when the delamination interface is not at the thickness center of a symmetrical layup laminate. Changes in the time of flight (ToF) of A(0) and S-0 modes are caused by the parallel propagation of Lamb waves. Based on those changes in the ToF, delamination size can be evaluated even though the delamination location through the thickness is not pregiven. Numerical and experimental studies are conducted to assess this method. Continuous wavelet transform is applied to extract the ToF of A(0) mode waves from the overlapped signals. Mode conversion is illustrated for the interaction of Lamb waves and delamination. The sensitivity and applicability of the proposed method are validated numerically and experimentally in two asymmetric layup composite laminates. The limitation of this method for symmetric layup composite laminates is analyzed and a potential improvement approach is further discussed.; National Natural Science Foundation of China [11232001]; National High Technology Research and Development Program of China (863 Program) [2012AA040209]; SCI(E); EI; ARTICLE; lizheng@pku.edu.cn; 18; 1506-1525; 34
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/416798]
专题	工学院
推荐引用方式 GB/T 7714	Li, Bing,Ye, Lin,Li, Zheng,et al. Quantitative identification of delamination at different interfaces using guided wave signals in composite laminates[J]. JOURNAL OF REINFORCED PLASTICS AND COMPOSITES,2015.
APA	Li, Bing,Ye, Lin,Li, Zheng,Ma, Zhaoyang,&Kalhori, Hamed.(2015).Quantitative identification of delamination at different interfaces using guided wave signals in composite laminates.JOURNAL OF REINFORCED PLASTICS AND COMPOSITES.
MLA	Li, Bing,et al."Quantitative identification of delamination at different interfaces using guided wave signals in composite laminates".JOURNAL OF REINFORCED PLASTICS AND COMPOSITES (2015).