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Please use this identifier to cite or link to this item: http://hdl.handle.net/10198/1853

Título: Displacement full-fiel measurement at crack root using the interferometric Moiré technique
Autor: Ribeiro, J.E.
Lopes, H.
Monteiro, Jaime
Vaz, M.A.P.
Palavras-chave: Moiré interformetry
Fracture mechanics
Full-field measurement
Image processing techniques
Issue Date: 2009
Editora: Universidade do Porto, Faculdade de Engenharia
Citação: Ribeiro, J.E.; Lopes, H.; Monteiro, Jaime; Vaz, M.A.P. (2009) - Displacement full-fiel measurement at crack root using the interferometric Moiré technique. In 3rd International Conference on Integrity, Reliability & Failure. Porto. ISBN 978-972-8826-22-2
Resumo: This paper presents the measurement of displacement field at the crack root of test specimens using the interferometric Moiré technique. The assessment of the displacement field is obtained from the standard test method for plain-strain, ASTM E399-90. The Moiré grating is replicated on specimen surface and the double LASER illumination allows the non-contact full-field measurement of the displacement field with high resolution down to a tenth of the wave length. The time phase modulation technique is used for increasing the spatial resolution of this method. The global displacement field is obtained by dedicated image processing technique. Finally, a comparison of the experimental results and the numerical calculations is presented.
URI: http://hdl.handle.net/10198/1853
ISBN: 978-972-8826-22-2
Appears in Collections:DTM - Resumos em Proceedings Não Indexados ao ISI

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