Temperature Effect on Damage Monitoring of Steel Girder Connection by Wireless Acceleration-Impedance Sensor Nodes

In this paper, temperature effect on damage monitoring by wireless acceleration-impedance sensor nodes is analyzed for steel girder connections. To achieve the objective, the following approaches are implemented. Firstly, a damage monitoring scheme is designed by using several global and local structural health monitoring (SHM) methods and also considering temperature effect. Secondly, wireless acceleration-impedance sensor nodes are described on the design of hardware components and embedded software to operate. Finally, temperature effect on acceleration and impedance features are experimentally analyzed for lab-scaled bolted structural connections. Temperature-induced inaccuracy in damage monitoring is assessed in bolted structural connections for which several damage scenarios are experimentally monitored with wireless acceleration-impedance sensor nodes.