Study on Wavelet De-noising Detective Signal of Micro Defect in Complicated Area of GH901 High Temperature Alloy Discs Tested by Ultrasonic Phased Array 在线阅读
Author of the article:WANG Hongliang;JIANG Shichao;PAN Zheng;ZHU Guosheng;GUO Tao
Author's Workplace：State-owned Wuhu Machinery Factory, Wu'hu 241000, China
Key Words：micro defects phased array ultrasonic testing wavelet noise reduction signal to noise ratio
Abstract：
Phase array ultrasonic detection technology for micro defects in complex areas of GH901 superalloy disk parts was used to analyze the detection signal. In order to improve the signal-to-noise ratio(SNR), the wavelet denoising method was applied to the detection signal. The results show that the proposed method can effectively improve the signal-to-noise ratio of phased array ultrasonic detection signals while retaining the small defect signals of disk parts. It plays an important role in improving the capability of phased array ultrasonic detection of micro defects in complex areas of GH901 superalloy disk parts.
