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An inverse vibration-based approach towards modelling and damage identification in nonlinearly vibrating structures. Application for delamination detection in a composite beam

Trendafilova, Irina (2012) An inverse vibration-based approach towards modelling and damage identification in nonlinearly vibrating structures. Application for delamination detection in a composite beam. Journal of Physics Conference Series, 382 (1). ISSN 1742-6588

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Trendafilova_I_Pure_An_inverse_vibration_based_approach_towards_modelling_and_damage_identification_in_nonlinearly_vibrating_structures._Application_for_delamination_detection_in_a_composite_beam_Aug_2012.docx - Draft Version

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Abstract

This study explores the possibilities for inverse analysis and modelling from data of a nonlinearly vibrating structure. We are suggesting a statistical approach based on singular spectrum analysis (SSA). The method is based on a free decay response, when the structure is given an initial disturbance and is left to vibrate on its own. The measured vibration response is decomposed into new variables, the principal components, which are used to uncover oscillatory patterns in the structural response. In this study an application of the methodology for the purposes of delamination detection in a composite beam is explored.