Nondestructive Characterization Evaluation by Time-Frequency Analysis on Pressure Vessel Piping with Corrosion

압력용기용 부식 배관의 시간-주파수 해석에 의한 비파괴적 특성 평가

In this study, the pressure vessel piping with corrosion used during long term were investigated from the time-frequency analysis method. The damage of piping could be evaluated the attenuation factor by ultrasonic parameters such as center frequency and echo waveform. Based on NDE analysis by time-frequency analysis method, it should also be possible to evaluate from various damages and defects in piping members.