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- W2117866919 abstract "The objective of this paper is to develop techniques to predict the location of damages in a structure, using both analytical methods and experimental results. The paper presents the formulation of a damage measure based on the evaluation of the distribution of strain energy within the structure. The in∞uence of damage on waves propagating in simple beams is investigated through a numerical model formulated by combining Spectral Finite Elements and Perturbation Techniques. The dynamic behavior of damaged beams is described through a flrst order model which couples bending and axial behavior, thus allowing the prediction of mode conversion phenomena. Damage is modeled as a small, localized reduction of the beam thickness which allows the application of perturbation theory. Baseline strain energy distributions of undamaged structure that are used for comparison with the damaged structure are synthesized directly from the test data, by flltering the structural response in the frequency/wavenumber domain, which efiectively separates incident waves from re∞ections caused by discontinuities encountered along the wave paths." @default.
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- W2117866919 date "2007-04-23" @default.
- W2117866919 modified "2023-09-27" @default.
- W2117866919 title "Damage Measure Formulation Based on the Filtered Spectral Approximation of the Structural Response" @default.
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- W2117866919 doi "https://doi.org/10.2514/6.2007-2303" @default.
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