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Proceedings Paper

Energy index approach for damage detection in nonlinear highway structures
Author(s): Shuang Jin; Richard A. Livingston; Dhafer Marzougui
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Paper Abstract

Effective detection of structural damages has been a challenging issue in the health monitoring of highway bridge structures. Most currently used nondestructive detecting techniques, though, rely heavily either on extensive measurements of local structural behavior or on analysis based on linear dynamics using simple structural models. Their applications, therefore, are often limited by the experimental costs and the complexity of real bridge structures. This research explores the possibility of applying an energy index approach in general nonlinear finite element analysis for damage detection in highway bridge structures. The nonlinear behaviors of the bridges under dynamical loading conditions due to material inelastic deformation and crack damages have been considered. It is shown that by utilizing the energy balance rule for a general, dynamically loaded nonlinear solid body a spatially indexed, scalar energy parameter can be formulated based on the generalized J integral used in fracture mechanics. The evaluation of such an energy index can be implemented into general 3-dimensional nonlinear finite element analysis procedures in computer simulations to detect and locate the structural damages within the highway bridge structures. The effectiveness and feasibility of the proposed energy index approach are illustrated in numerical simulation studies.

Paper Details

Date Published: 9 June 2000
PDF: 12 pages
Proc. SPIE 3995, Nondestructive Evaluation of Highways, Utilities, and Pipelines IV, (9 June 2000); doi: 10.1117/12.387845
Show Author Affiliations
Shuang Jin, Federal Highway Administration (United States)
Richard A. Livingston, Federal Highway Administration (United States)
Dhafer Marzougui, FHWA/NHTSA National Crash Analysis Ctr. (United States)


Published in SPIE Proceedings Vol. 3995:
Nondestructive Evaluation of Highways, Utilities, and Pipelines IV
A. Emin Aktan; Stephen R. Gosselin; Stephen R. Gosselin, Editor(s)

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