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	Displacement smoothing and strain estimation using Savitaky-Golay filters in digital image correlation
	Bing Pan ; Huimin Xie ; Tao Hua ; Weining Wang ; Yan Fang
	2010-05-10 ; 2010-05-10
关键词	Experimental/ bending correlation methods displacement measurement smoothing methods strain measurement tensile strength/ displacement smoothing estimation strain estimation Savitaky-Golay filters digital image correlation uniaxial tensile three-point bending/ A8140L Deformation, plasticity and creep A4630R Mechanical measurement methods and techniques for solids A0630C Spatial variables measurement E2180B Plasticity (mechanical engineering) E1620 Measurement
中文摘要	Recently, many research works were concentrated on how to improve the accuracy of displacement fields in digital image correlation (DIC). However, the original displacement fields calculated at discrete locations using DIC are unavoidably contaminated by noises. If the strain fields are directly computed by differentiating the original displacement fields, the noises will be amplified even at a higher level and the resulting strain fields are untrustworthy. To acquire reliably estimation of strain fields, in this paper, Savitaky-Golay (SG) filters are introduced to obtain smoothed displacement fields and reasonable strain estimation. The principle of two-dimensional SG filters is described in detail first. Then images of uniaxial tensile and three-point bending experiments were used to verify the proposed approach. The resulting smoothed displacement fields and strain fields clearly show that the proposed method is simple and effective.
语种	英语 ; 英语
出版者	Trans Tech Publications ; Switzerland
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/24212]
专题	清华大学
推荐引用方式 GB/T 7714	Bing Pan,Huimin Xie,Tao Hua,et al. Displacement smoothing and strain estimation using Savitaky-Golay filters in digital image correlation[J],2010, 2010.
APA	Bing Pan,Huimin Xie,Tao Hua,Weining Wang,&Yan Fang.(2010).Displacement smoothing and strain estimation using Savitaky-Golay filters in digital image correlation..
MLA	Bing Pan,et al."Displacement smoothing and strain estimation using Savitaky-Golay filters in digital image correlation".(2010).

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