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Articles by Binfeng Yang
Total Records ( 2 ) for Binfeng Yang
  Binfeng Yang , Bin Li and Yunjiang Wang
  Pulsed eddy current (PEC) nondestructive testing (NDT), as for most of EC techniques, is prone to lift-off effect, which influences the interpretation and quantification of flaw. A new technique for reducing the lift-off effect and quantifying flaw based on sensor design and frequency spectrum analysis is proposed. The technique exploits the self-differential feature of the sensor and the broadband frequency spectral content of pulsed excitation. Results show that the lift-off has been significantly reduced and the precision of quantification of flaw has been improved.
  Binfeng Yang and Xuechao Li
  One pick-up coil with a large inner diameter is usually used in pulsed remote field eddy current technique, which decreases the identification ability to defect. With the purpose of overcoming this problem, array pulsed remote field eddy current technique is proposed to enhance the precision in quantification of defect. The finite element method is used to optimise the structure of probe and analyse of the influence effect of response signal with the variation of the defect depths. The results of experimental work confirm that the array pulsed remote field technique has the advantages of high precision and sensitivity, which can be used as an effective method for quantification of defect in tube.
 
 
 
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