Vibration tests and damage detection of P/C bridges

RETRACTED: Identification and monitoring of bridge health from ambient vibration data

“…Therefore, noninvasive testing of a structure can be carried out by ascertaining changes in dynamic properties. For example, research on continuous beams conducted by Tang and Leu (1991) revealed that for the detection of damaged locations, changes in mode are more sensitive than changes in natural frequency.…”

Damage detection algorithms applied to experimental modal data from the I-40 Bridge

“…Jain concluded that modal parameters, particularly frequencies and mode shapes, can furnish only general information on the damage state of the structure: deviation in these parameters indicates that damage has occurred, but not its local extent or underlying cause. Tang and Leu (1991) performed experiments on a defective prestressed concrete girder bridge. They found that mode shape changes may be a more effective indicator for damage detection in bridges than frequency shifts.…”

A health monitoring system for large structural systems

“…There are many nondestructive techniques using different tools such as vision, optical radiography, ultrasonic, acoustic emission, dynamic properties, magnetic particles, eddy current, microwave, thermal and so on [16][17][18]. Visual inspection is the oldest and most relied upon method for bridge inspection.…”