Band-Stop Filtering Method of Combining Functions of Butterworth and Hann Windows to Ultrasonic Guided Wave

In view of the presence of a large amount of noise in the measured ultrasonic signals and the small contribution of existing filtering methods to the improvement of the signal-to-noise ratio (SNR), the band-stop filtering method of the combining functions of the Butterworth and Hann windows (B–H band-stop filtering method) to ultrasonic guided waves was developed by analyzing the spectral features of the ideal and measured ultrasonic signals...