Damage detection of metro tunnel structure through transmissibility function and cross correlation analysis using local excitation and measurement
This paper proposes an approach to perform structural damage detection and localization in metro tunnel engineering, which compares the transmissibility function and cross correlation analysis. The feasibility and sensitivity of the proposed approach have been validated for different tunnel structural damage scenarios. The proposed experimental strategies represent a localized scheme for excitation and measurement, where only a few vibration measurements very close to the impact excitation are needed.
damage detection metro tunnel transmissibility function cross correlation structural health monitoring