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1 May 1994 Detection of damage in a space truss using modal data
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Abstract
A three-step damage detection procedure using modal data is developed for space trusses. The procedure is based on determining parameters associated with member stiffness matrices using a system identification technique. The first step is the refinement of the matrix using modal data from the undamaged structure. A modal residual vector is then used to determine whether or not damage has occurred. If it has, a minimization scheme is used to determine the parameters for only those members found to have been damaged. An eight-bay, hybrid-scaled truss designed and tested at NASA's Langley Research Center is used to verify the procedure. One damage case is used to illustrate the success of the procedure.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hung-Shi Chen and Vernon C. Matzen "Detection of damage in a space truss using modal data", Proc. SPIE 2191, Smart Structures and Materials 1994: Smart Sensing, Processing, and Instrumentation, (1 May 1994); https://doi.org/10.1117/12.173951
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