Formulation of an acceleration residual generator for monitoring of stiffness degradation

Y. Lu, F. Gao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents the formulation of a time-domain acceleration based residual generator for the detection of stiffness degradation in a structural system. Furthermore, an explicit damage indicator for individual elements is incorporated in association with the acceleration residual generators. The general idea of the residual generator method is to transform the state space description of a dynamic system with structural stiffness changes in different components into multi-failure events. Consequently, the damage detection becomes effectively a disturbances decoupling problem (DDP), and therefore the geometric concept can be employed to design residual generators for individual components of the structure. A simple example is provided to illustrate the implementation and the general result. The framework of the method has the potential for real life applications; however, further work is needed to enhance the robustness of the procedure.

Original languageEnglish
Title of host publicationSTRUCTURAL CONDITION ASSESSMENT, MONITORING AND IMPROVEMENT, VOLS 1 AND 2
EditorsWX Ren, H Hao, XQ Zhu
Place of PublicationBEIJING
PublisherSCIENCE PRESS BEIJING
Pages825-829
Number of pages5
ISBN (Print)978-7-03-020453-0
Publication statusPublished - 2007
Event2nd International Conference on Structural Condition Assessment, Monitoring and Improvement (SCAMI-2) - Changsha
Duration: 19 Nov 200721 Nov 2007

Conference

Conference2nd International Conference on Structural Condition Assessment, Monitoring and Improvement (SCAMI-2)
CityChangsha
Period19/11/0721/11/07

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