Developing Dynamic Digital Image Correlation Technique to Monitor Structural Damage of Old Buildings under External Excitation

<table>Comparisons of the IDMS damage index of various building stories based on the digital image method and the accelerometer method for the building subject to the EL Centro 1940 earthquake data.</table>

Shock and Vibration

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Figure 23

Figure 23: Developing Dynamic Digital Image Correlation Technique to Monitor Structural Damage of Old Buildings under External Excitation 