FEM MODAL ANALYSIS FOR DAMAGE DETECTION IN AIRPLANE STRUCTURES
DOI:
https://doi.org/10.26512/ripe.v2i19.15018Abstract
Technics for damage and fatigue detection has become an essential part of
Aeronautic industry safety. The duration of service lives of such vehicles can be considerably extended by systematic monitoring of small, possibly undetected, damages to their structures. In this paper, we propose damage detection in airplane structures via modal analysis. By using Finite Element Method numerical models, developed in commercial software, as a first step, we make comparisons of the free vibration frequencies of undamaged models and models where we deliberately introduce damage. We observe the difference in frequency values. In future work we will propose numerical damage indicators based on the modal analysis.
Keywords: Aeronautical Structure, Damage Detection, Modal Analysis, FEM.
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References
Allemang, R.J., 2003. “The Modal Assurance Criterion ”“ Twenty years of use and abuse” . In Journal of Sound and Vibration, p.14-21.
Anderson, J.C and Naeim, F., 2012. Basic Structural Dynamics. John Wiley & Sons, Inc ., Hoboken, USA..
Bathe, K.J., 2006. Finite element procedures, USA. Pearson Education, Inc., 2006
Clough, R.W and Penzien, J., 2003. Dynamics of structures. Computers & Structures, Berkley, USA, 2nd edition.
Farrar, C.R and Worden, K., 2013. Structural health monitoring ”“ A machine learning perspective. John Wiley & Sons, ltd., Chichester, United Kingdom.
Juliani, T.M., 2014. Detecção de danos em modelos de pontes em escala reduzida pela identificação modal estocástica. São Carlos´s School of Engineering, University of São Paulo, São Carlos, Brazil.
Pandey, A.K., Biswas, M. and Sammam, M. M., 1991. “Damage detection from changes in flexibility”. In Journal of Sound and Vibration, v.145, p.321-332.
Rodrigues, J. 2004. Identificação modal estocásticca: métodos de análise e aplicações estruturas de engenharia civil. 484p, School of Engineering, University of Porto, Porto, Portugal.
Stubbs, N., Kim, J.T. and Farrar, C.R., 1995. “Field verification of a nondestructive damage localization and severity estimation algorithm”. In International Modal Analysis Conference (IMAC), Society for Experimental Mechanics, p. 1520-1529, Nashville, USA.
Stubbs, N., Kim, J. T. and Topole, K., 1992. “An efficient and robust algorithm for damage localization in offshore structures.” In American Society of Civil Engineers (ACSE) Structures Conference. American Society of Civil, p. 543-546, New York, USA
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