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Título: Techniques in numerical differentiation of experimentally noisy data
Autor: Lopes, H.
Guedes, R.M.
Vaz, M.A.P.
Palavras-chave: Numerical differentiation
Experimental data
Noisy data
Issue Date: 2006
Editora: J.F. Silva Gomes and Shaker A. Meguid
Citação: Lopes, H.; Guedes, R. M.; Vaz, M.A.P. (2006) - Techniques in numerical differentiation of experimentally noisy data. In 5th International Conference of Mechanical & Materials in Design. Porto, Portugal. p.27-28.
Resumo: A comparison of different methodologies for spatial differentiation of experimental noisy data is presented. The transient displacement fields resulting from bending wave propagation on aluminum plate were measured with pulse TV-holography. A new method to perform the numerical spatial differentiation and a strategy for dealing with the border problem are presented. The method here presented results for the third order derivative and showed to be superior to the other methods tested. A good agreement between the new method and the Finite Elements Method was achieved.
Arbitragem científica: yes
Appears in Collections:DMA - Artigos em Proceedings Não Indexados ao ISI/Scopus

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