Mode Shape-Based Damage Detection Method (MSDI): Experimental Validation

Autor:	Ivan Duvnjak, Domagoj Damjanović, Marko Bartolac, Ana Skender
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	damage detection plate-like structure operational modal analysis mode shape modal assurance criterion (MAC) matrix mode shape damage index (MSDI) Technology Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Zdroj:	Applied Sciences, Vol 11, Iss 10, p 4589 (2021)
Druh dokumentu:	article
ISSN:	11104589 2076-3417
DOI:	10.3390/app11104589
Popis:	The main principle of vibration-based damage detection in structures is to interpret the changes in dynamic properties of the structure as indicators of damage. In this study, the mode shape damage index (MSDI) method was used to identify discrete damages in plate-like structures. This damage index is based on the difference between modified modal displacements in the undamaged and damaged state of the structure. In order to assess the advantages and limitations of the proposed algorithm, we performed experimental modal analysis on a reinforced concrete (RC) plate under 10 different damage cases. The MSDI values were calculated through considering single and/or multiple damage locations, different levels of damage, and boundary conditions. The experimental results confirmed that the MSDI method can be used to detect the existence of damage, identify single and/or multiple damage locations, and estimate damage severity in the case of single discrete damage.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/af118c53e31d46ecbb63c9728245bb53 Zobrazit plný text záznamu View record in DOAJ