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	Impact of sensor liftoff on magnetic flux leakage detection in pipelines
	Cui Wei ; Huang Songling ; Zhao Wei
	2010-05-06 ; 2010-05-06
关键词	Practical Experimental/ magnetic circuits magnetic flux magnetic leakage magnetic sensors numerical analysis pipelines/ sensor liftoff magnetic flux leakage MFL detection measurement oil pipeline gas pipeline magnetic circuit design numerical simulation measurement sensitivity/ B7230 Sensing devices and transducers B7310L Magnetic variables measurement B3120 Magnetic material applications and devices B0290Z Other numerical methods
中文摘要	To increase the accuracy of magnetic flux leakage (MFL) detection measurements in oil and gas pipelines, the fluctuating distance between the sensor and the pipeline surface (liftoff) should be reduced while maintaining the necessary measurement sensitivity. The factors affecting the liftoff were analyzed with a method to avoid the effect of fluctuations of the liftoff by improving the MFL detector magnetic circuit design. The results were verified by numerical simulations, which show that this method significantly increases the measurement sensitivity with the signal-to-noise ratio increased at least 30%. The method can be used to optimize the detector structure to increase MFL detection measurement accuracy.
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/123456789/11502]
专题	清华大学
推荐引用方式 GB/T 7714	Cui Wei,Huang Songling,Zhao Wei. Impact of sensor liftoff on magnetic flux leakage detection in pipelines[J],2010, 2010.
APA	Cui Wei,Huang Songling,&Zhao Wei.(2010).Impact of sensor liftoff on magnetic flux leakage detection in pipelines..
MLA	Cui Wei,et al."Impact of sensor liftoff on magnetic flux leakage detection in pipelines".(2010).

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