Abstract
Temperature-compensated damage monitoring in steel girder connections by using wireless acceleration-impedance sensor nodes is experimentally examined. To achieve the objective, the following approaches are implemented. Firstly, wireless acceleration-impedance sensor nodes are described on the design of hardware components to operate. Secondly, temperature-compensated damage monitoring scheme for steel girder connections is designed by using the temperature compensation model and acceleration-impedance-based structural health monitoring methods. Finally, the feasibility of temperature-compensated damage monitoring scheme by using wireless acceleration-impedance sensor nodes is experimentally evaluated from damage monitoring in a lab-scaled steel girder with bolted connection joints.
Highlights
Steel structures have structural connections such as bolted joints
Wireless acceleration-impedance sensor nodes are described on the design of hardware components to operate
The feasibility of temperature-compensated damage monitoring scheme by using wireless accelerationimpedance sensor nodes is experimentally evaluated from damage monitoring in a lab-scaled steel girder with bolted connection joints
Summary
Steel structures have structural connections such as bolted joints. Potential damage types of the structural connections include fatigue cracks between bolt holes, the change in tensile force of bolts, and failures of connection components. Many studies have been focused on SHM of structural connections by using global and local dynamic characteristics [2,3,4,5,6,7,8,9,10,11]. These studies have been mainly focused on developing SHM methods by using a single physical quantity such as strain, acceleration, or electromechanical impedance. The SHM scheme using multiscale sensing mechanism can be an alternative approach [12,13,14,15]
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