Title :
Consecutive Polarity Coincidence Based Split-spectrum Processing in Ultrasonic Testing of Coarse Materials
Author :
Kang, Yuan ; Zhongqiao, Pan ; Shiwei, Ma
Author_Institution :
Shanghai Univ., Shanghai
Abstract :
A novel split-spectrum processing (SSP) method for ultrasonic echo signal was proposed, which employs consecutive polarity coincidence (CPC) as the recovering algorithm and can be used in ultrasonic nondestructive testing to coarse materials. Both numerical simulation and experimental result manifested that, by using this method, the ratio of signal to noise (SNR) can be improved and the flaw echo can be effectively extracted with better performance than other conventional SSP methods.
Keywords :
nonlinear filters; ultrasonic materials testing; coarse materials; consecutive polarity coincidence; flaw echo; signal to noise; split spectrum processing; ultrasonic echo signal; ultrasonic nondestructive testing; ultrasonic testing; Automation; Band pass filters; Frequency; Instruments; Materials testing; Nondestructive testing; Power generation; Signal processing algorithms; Signal to noise ratio; Space power stations; Split-spectrum processing; consecutive polarity coincidence; ultrasonic nondestructive testing;
Conference_Titel :
Electronic Measurement and Instruments, 2007. ICEMI '07. 8th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4244-1136-8
Electronic_ISBN :
978-1-4244-1136-8
DOI :
10.1109/ICEMI.2007.4350519
