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	Application of Hilbert-Huang transforms for nonlinear ultrasonic nondestructive testing
	Chen Bin ; Yang Ping ; Shi Keren
	2010-05-10 ; 2010-05-10
关键词	Experimental Theoretical or Mathematical/ Hilbert transforms stainless steel ultrasonic materials testing/ Hilbert-Huang transform nonlinear ultrasonic nondestructive testing signal detection stainless steel signal-to-noise ratio instantaneous frequency time-resolved testing 0.8 mm 65 mm/ A8170B Nondestructive testing: acoustic methods A4385G Measurement by acoustic techniques A0230 Function theory, analysis B7820 Sonic and ultrasonic applications B0590 Materials testing B0290X Integral transforms in numerical analysis/ size 8.0E-04 m depth 6.5E-02 m
中文摘要	The Hilbert-Huang transform was used to improve estimates of the position and relative size of defects for nonlinear ultrasonic nondestructive testing. The detected signal in stainless steel is nonlinear, non-stationary and has a low signal-to-noise ratio. The instantaneous frequency can indicate the defect position, which the instantaneous amplitude can characterize the relative defect size. The method can detect a O0.8 mm flat-bottom hole (at a depth of 65 mm) in a stainless steel sample of average grain size 0.6 mm. Therefore, the Hilbert-Huang transform provides an improved ability to detect defects through time-resolved testing.
语种	中文 ; 中文
出版者	Tsinghua Univ. Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/24149]
专题	清华大学
推荐引用方式 GB/T 7714	Chen Bin,Yang Ping,Shi Keren. Application of Hilbert-Huang transforms for nonlinear ultrasonic nondestructive testing[J],2010, 2010.
APA	Chen Bin,Yang Ping,&Shi Keren.(2010).Application of Hilbert-Huang transforms for nonlinear ultrasonic nondestructive testing..
MLA	Chen Bin,et al."Application of Hilbert-Huang transforms for nonlinear ultrasonic nondestructive testing".(2010).

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