To monitor bolt connection status and detect bolt looseness in engineering structures, a bolt
pretightening force sensor was designed and fabricated with a strain gauge bonded on the …

Spatially distributed arrays of piezoelectric disks are being applied to monitor structural
integrity using Lamb waves. Applied loads directly affect waves propagating between array …

Bolted joints are widely applied in engineering structures. Significant advantages of bolted
joints are that they can be easily disassembled and the possibility to design for bearing large …

Cable tension monitoring is important to control the structural performance variation of cable-
supported structures. Based on the elasto-magnetic effect and the self-induction …

Cable tension monitoring is vital for the health monitoring of cable-stayed bridges. During
the service of bridges, cable tension fluctuates rather than monotonously changes. However …

Bearing damage in composite bolted connections (such as those commonly used in
aerospace applications) is investigated through the application of ultrasonic guided waves …

Framed steel structures frequently have bolted connections to ensure semi-rigid joints that
have a significant amount of energy dissipation incorporated in them, to avoid failure of …

In a previous work, the ultrasonic measurement of longitudinal strain in a plate using the
time-reversal technique was proved. One drawback of this measurement is the low …

The aim of this dissertation is to develop structural health monitoring (SHM) strategies
specifically suited for application to structures of significant geometric or material complexity …

Prestressed steel strands are critical components of prestressed structures, which determine
the bearing capacity of the structures. The prestress loss of steel strands causes the bearing …