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DAMAGE DETECTION BASED ON REDUCED MEASUREMENTS

โœ Scribed by M. Baruch

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
256 KB
Volume
12
Category
Article
ISSN
0888-3270

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โœฆ Synopsis

Missing measurements of a structure can be calculated by using the connection between the unmeasured quantities and the measured ones through the iterative process of identification of the tested structure. New connections are proposed. The missing quantities, and to some extent the measured ones, are treated as hidden functions of the parameters of the structure. This makes the Euclidean norm of the matrix to be minimised a non-linear function of the parameters. This norm may have more than one minimum. The damaged elements of the structure must be identified by looking for the global minimum of the Euclidean norm. The global minimum can be found by changing the initial values of the parameters or by changing special coefficients. In order to identify the damaged structure, the reduced measured and the supplied missing quantities are forced to comply with the general laws for a linear structure. This compliance is achieved during any step of the iterative process.

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