Research Article

Structural Health Monitoring of Precast Concrete Box Girders Using Selected Vibration-Based Damage Detection Methods

Table 2

Error in predicted damage location by each method, listed as a fraction of measurement point spacing.

MethodExperimental ResultsNumerical Results
Max. errorAvg. errorStand. dev.% ambig*Max. errorAvg. errorStand. dev.% ambig*

CMS0.820.340.2780.250.120.070
DI0.820.370.22250.550.250.150
MCF0.820.350.26250.650.200.1733

*indicates the percentage of damage cases that produced a second peak that was either at least 75% of the magnitude of the highest peak, or nearer to the damage location.