Study on method of magnetic flux leakage signals de-noising for cracks of bar
During bars manufacturing and using process, the use of bars with cracks influenced the service life and sustainable work, on the premise of certain detection system, the choose of signal de-noising method plays an important part in magnetic flux leakage testing process, for which determining the global performance of testing equipment. This paper studies on magnetic flux leakage signals characteristic of cracks on the bar, analyzed the advantages and disadvantages of wavelet analysis and wavelet packet threshold denoising, and on this basis, in order to give consideration to both the low and high frequency interference signal removing, adopted an integration method that combines wavelet packet threshold denoising, wavelet packet decomposition and wavelet reconstruction, which greatly improved signal processing results.
magnetic flux leakage signal processing de-noising crack
Hongchun Sun Yongfa Xia Yuecheng Deng
School of Mechanical Engineering and Automation, Northeastern University, ShenYang, Liao Nina.China
国际会议
大连
英文
757-761
2011-10-19（万方平台首次上网日期，不代表论文的发表时间）