COMSOL concrete crack ultrasonic testing скачать в хорошем качестве

COMSOL concrete crack ultrasonic testing

COMSOL concrete crack ultrasonic testing Randomly shaped stones are used as aggregates for concrete, stacked with four piezoelectric sheets in a self collecting form, with a frequency of 50kHz, and a concrete thickness of 40cm. Animation is a sound field animation without defects. Figure 1 shows the acoustic field when there is a crack defect at a height of 200mm in the y-direction. At this time, the longitudinal wave is reflected when encountering the crack, corresponding to the waveform below Figure 2. The crack reflection wave is earlier than the bottom wave when there is no defect. Email： modeling199308@gmail.com