The increased use of aircraft in service beyond their original life expectancy, together with the aging of today's civil infrastructure, has pushed the discipline of structural health monitoring to the forefront of structures technology. This paper addresses the determination of the damage location in a structure with an associated reference model. A method of localized structural health monitoring is presented that utilizes an invariance property of transmission zeros of substructural frequency response functions. These functions are obtained by partitioning the global dynamic flexibility into a substructural form. It is shown that the transmission zeros of the frequency response functions of a damaged substructure are invariant whereas those of healthy substructures are affected. The present method exploits this invariance property for the detection of damage in a structure. Numerical examples are presented to demonstrate the utility of the proposed method.
Use of substructural transmission zeros for structural health monitoring
Schadensfrüherkennung von Tragwerken anhand der Nullstellen im Frequenzgang der Substrukturschwingungen
AIAA Journal ; 38 , 6 ; 1040-1046
2000
7 Seiten, 9 Bilder, 13 Quellen
Article (Journal)
English
Experimental Damage Detection Using Substructural Transmission Zeros
British Library Conference Proceedings | 2000
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