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Identification of Localized Structural Damage from Highly Incomplete Modal Information: Theory and Experiments

Hernandez, Eric M.

The paper presents a methodology for identification of localized structural damage using highly incomplete modal information, such as a subset of modal frequencies. The proposed methodology is based on linearized modal sensitivities and $ℓ_{1}$ -norm minimization of the algebraic difference between identified frequencies in damaged and undamaged states. The method is verified using stochastic simulations and validated using a series of laboratory experiments in which the number of potentially damaged elements is significantly larger than the number of identified modal frequencies.

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Identification of Localized Structural Damage from Highly Incomplete Modal Information: Theory and Experiments

Hernandez, Eric M.

The paper presents a methodology for identification of localized structural damage using highly incomplete modal information, such as a subset of modal frequencies. The proposed methodology is based on linearized modal sensitivities and $ℓ_{1}$ -norm minimization of the algebraic difference between identified frequencies in damaged and undamaged states. The method is verified using stochastic simulations and validated using a series of laboratory experiments in which the number of potentially damaged elements is significantly larger than the number of identified modal frequencies.

Identification of Localized Structural Damage from Highly Incomplete Modal Information: Theory and Experiments

Hernandez, Eric M.

The paper presents a methodology for identification of localized structural damage using highly incomplete modal information, such as a subset of modal frequencies. The proposed methodology is based on linearized modal sensitivities and $ℓ_{1}$ -norm minimization of the algebraic difference between identified frequencies in damaged and undamaged states. The method is verified using stochastic simulations and validated using a series of laboratory experiments in which the number of potentially damaged elements is significantly larger than the number of identified modal frequencies.

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Title:

Identification of Localized Structural Damage from Highly Incomplete Modal Information: Theory and Experiments

Contributors:

Hernandez, Eric M. (author)

Published in:

Journal of Engineering Mechanics ; 142

Publication date:

2015-07-23

ISSN:

0733-9399 , 1943-7889

DOI:

https://doi.org/10.1061/(ASCE)EM.1943-7889.0000983

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

Unknown

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