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23 May 1997 Smart baseline model for nondestructive evaluation of highway bridges
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A methodology to identify a baseline modal model of a complicated 3D structure using limited structural and modal information is experimentally examined. In the first pat, a system's identification theory for the methodology to identify baseline modal responses of the structure is outlined. Next, an algorithm is designed to build a generic finite element model of the baseline structure and to calibrate the model by using only a set of post-damage modal parameters. In the second part, the feasibility of the methodology is examined experimentally using a field-tested truss bridge for which only post-damaged modal response were measured or a few vibration modes. For the complex 3D bridge with many members, we analyzed to identify unknown stiffness parameters of the structure by using modal parameters of the initial two modes of vibration.
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Jeong-Tae Kim, Yeon-Sun Ryu, Bong-Hak Lee, and Norris Stubbs "Smart baseline model for nondestructive evaluation of highway bridges", Proc. SPIE 3043, Smart Structures and Materials 1997: Smart Systems for Bridges, Structures, and Highways, (23 May 1997);

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