Crack Detection Using Frequency Analysis: A Case Study

From Figure 2, it can be observed that the frequency range of both the normal and crack signals primarily falls between 1200 and 8000 Hz. Notably, the frequency domain waveform displays numerous peak signals. A significant difference is evident in the frequency amplitude between the crack and normal signals. Amplifying the frequency waveform within the 7500 to 8000 Hz range reveals that the crack signal's frequency amplitude surpasses that of the normal signal within this specific frequency band.