Substructure energy based nondestructive evaluation approach for lattice structures

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Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (8) : 12-18.

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Substructure energy based nondestructive evaluation approach for lattice structures

Fang hui

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Abstract

This paper proposes a new method using substructure energy, which is capable of accurately estimating the damage magnitude of multiple members, and particularly advantageous for lattice structures. While other existing damage severity estimation methods require the information of several modes of the whole structure, the new method utilizes only a small number of measurement locations for lattice structures. The performance of the proposed method is compared with existing damage detection methods using a set of numerical simulations that are demonstrated for a lattice panel based on synthetic data generated from finite element models.

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lattice structure / substructure energy / damage detection

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Fang hui. Substructure energy based nondestructive evaluation approach for lattice structures[J]. Journal of Vibration and Shock, 2011, 30(8): 12-18