Acoustic resonance diagnostic method for detecting structural degradation and system applying the same

An acoustic resonance diagnostic system for detecting structural degradation, comprising:

• a sound wave sensing unit, used to capture an under-test sound wave signal from an under-test section of an under-test structure;
• an acoustic resonance diagnostic module, used to perform the following steps:
• building a training model using a deep neural network;
• inputting at least two training acoustic signals to the training model to carry a training;
• building a diagnostic model according to a result of the training using a convolutional neural network;
• and
• determining a structural degradation state of the under-test section according to the under-test sound wave signal through the diagnostic model;
• and
• a communication module used to signal-connect the sound wave sensing unit to the acoustic resonance diagnostic module.