Affiliation:
1. Department of Architectural Engineering, Kangwon National University, Chuncheon 24341, Republic of Korea
Abstract
Sensor measurements diagnose and evaluate the structural health state. A sensor configuration with a limited number of sensors must be designed to monitor sufficient information about the structural health state. The diagnosis of a truss structure composed of axial members can begin with a measurement by the strain gauges attached to the truss members or by the accelerometers and displacement sensors at the nodes. This study considered the layout design of the displacement sensors at the nodes for the truss structure by using the effective independence (EI) method based on the mode shapes. The validity of the optimal sensor placement (OSP) methods depending on their synthesis with the Guyan method was investigated by the mode shape’s data expansion. The Guyan reduction technique rarely affected the final sensor design. A modified EI algorithm based on the strain mode shape of the truss members was presented. A numerical example was analyzed, showing that the sensor placements were affected depending on the displacement sensors and strain gauges. Numerical examples illustrated that the strain-based EI method without the Guyan reduction method has the advantage of reducing the number of sensors and providing more data related with the displacements at the nodes. The measurement sensor should be selected when considering structural behavior, as it is crucial.
Funder
National Research Foundation of Korea
Subject
Electrical and Electronic Engineering,Biochemistry,Instrumentation,Atomic and Molecular Physics, and Optics,Analytical Chemistry
Reference36 articles.
1. Pozo, F., Tibaduiza, D.A., and Vidal, Y. (2021). Sensors for structural health monitoring and condition monitoring. Sensors, 21.
2. Optimal sensor placement for a truss structure using particle swam optimization;Zhao;Int. J. Acoust. Vib.,2017
3. optimal sensor placement of bridge structure based on sensitivity-effective independence method;Chai;IET Circuits Devices Syst.,2022
4. Tobias, D.H., Foutch, D.H., and Choros, J. (1993). Investigation of an Open Deck Through-Truss Railway Bridge: Work Train Tests, AAR Research Center. Association of American Railroads, Report No. R-830.
5. On the Optimal Sensor Placement Techniques for a Bridge Structure;Meo;Eng. Struct.,2005
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