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dc.contributor.author
de Oliveira Filho, Marcus Vinícius Manfrin  
dc.contributor.author
Perez Ipiña, Juan Elias  
dc.contributor.author
Bavastri, Carlos Alberto  
dc.date.available
2020-08-07T15:25:37Z  
dc.date.issued
2018-01  
dc.identifier.citation
de Oliveira Filho, Marcus Vinícius Manfrin; Perez Ipiña, Juan Elias; Bavastri, Carlos Alberto; Experimental identification of structural changes and cracks in beams using a single accelerometer; Springer Heidelberg; Journal of the Brazilian Society of Mechanical Sciences and Engineering; 40; 2; 1-2018; 106-120  
dc.identifier.issn
1678-5878  
dc.identifier.uri
http://hdl.handle.net/11336/111159  
dc.description.abstract
Several advances in the structural health monitoring field and in crack identification techniques were achieved in recent years. Nonetheless, the use of those techniques for crack identification in beams by the industry is still modest. A few reasons can be pointed to explain this fact: some proposed methods are unfeasible from the economic or logistic point of view, or the cracks are detected only when they already present an advanced depth, or the structures intended to be monitored are subjected to random loads, causing methods using deterministic excitations to be unrepresentative of the actual situation. Considering this, the objective of this study is to propose a method that could make it possible to identify and monitor cracks in beams aiming at operational conditions, i.e., a method to identify small cracks remotely and in almost real time, in beams subjected to unknown random loading, minimizing the measurement equipment used to a single accelerometer and a remote computer. To achieve so, the proposed method combines an operational modal analysis (OMA) based experimental procedure, a numerical-computational model of the damaged beam using the finite element method and an optimization problem, solved by using the genetic algorithm (GA). The method was preliminary tested on a steel beam, into which structural changes simulating cracks with different depths were inserted. The method was also tested on numerically generated data with noise. The found results are encouraging, since they have shown that crack position and depth can be determined with appropriate accuracy for many engineering applications. The limitations on the proposed method were also discussed.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Springer Heidelberg  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Crack identification  
dc.subject
Operational modal analysis  
dc.subject
Structural health monitoring  
dc.subject
Genetic algorithm  
dc.subject.classification
Otras Ingeniería Mecánica  
dc.subject.classification
Ingeniería Mecánica  
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS  
dc.title
Experimental identification of structural changes and cracks in beams using a single accelerometer  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2020-03-11T13:05:57Z  
dc.identifier.eissn
1806-3691  
dc.journal.volume
40  
dc.journal.number
2  
dc.journal.pagination
106-120  
dc.journal.pais
Alemania  
dc.journal.ciudad
Berlin  
dc.description.fil
Fil: de Oliveira Filho, Marcus Vinícius Manfrin. Universidade Federal do Paraná; Brasil  
dc.description.fil
Fil: Perez Ipiña, Juan Elias. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Comahue; Argentina  
dc.description.fil
Fil: Bavastri, Carlos Alberto. Universidade Federal do Paraná; Brasil  
dc.journal.title
Journal of the Brazilian Society of Mechanical Sciences and Engineering  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/10.1007/s40430-018-1017-8  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s40430-018-1017-8