Damage localization in composite laminates based on a quantitative   expression of anisotropic wavefront

doi:10.1088/0964-1726/22/6/065005

CORC > 北京大学 > 工学院

	Damage localization in composite laminates based on a quantitative expression of anisotropic wavefront
	Li, Bing ; Liu, Yongquan ; Gong, Kezhuang ; Li, Zheng
刊名	smart materials and structures
	2013
关键词	ARTIFICIAL NEURAL ALGORITHM LAMB WAVE DELAMINATION DETECTION SENSOR NETWORK GROUP-VELOCITY IDENTIFICATION PROPAGATION PLATE TRANSDUCERS INSPECTION
DOI	10.1088/0964-1726/22/6/065005
英文摘要	In this paper, according to the disperse curve of composite laminates in a low frequency domain, a quantitative relation between anisotropic wavefront and propagation direction is proposed to reveal the direction dependency of Lamb wave propagation in composite laminates. This relation is described by a concise analytic expression, which can effectively incorporate anisotropic wave propagation into damage identification and reasonably determine the time-of-flight (ToF) of the Lamb wave. The reliability and applicability of this quantitative relation are validated by numerical simulations and experiments in three different lay-up composite laminates. Furthermore, combining this quantitative relation and the conventional ToF approach, an effective detection method is developed for damage localization in composite plate-like structures. By using PZT sensors, the method is conducted experimentally in a cross-ply laminate. The Gabor wavelet transform is introduced for signal processing to identify the ToF more exactly. Results indicate that a satisfied damage location can be achieved by considering the orientation dependency of anisotropic wave propagation in composite laminates.; Instruments & Instrumentation; Materials Science, Multidisciplinary; SCI(E); EI; 2; ARTICLE; 6; 22
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/315880]
专题	工学院
推荐引用方式 GB/T 7714	Li, Bing,Liu, Yongquan,Gong, Kezhuang,et al. Damage localization in composite laminates based on a quantitative expression of anisotropic wavefront[J]. smart materials and structures,2013.
APA	Li, Bing,Liu, Yongquan,Gong, Kezhuang,&Li, Zheng.(2013).Damage localization in composite laminates based on a quantitative expression of anisotropic wavefront.smart materials and structures.
MLA	Li, Bing,et al."Damage localization in composite laminates based on a quantitative expression of anisotropic wavefront".smart materials and structures (2013).