Utilize este identificador para referenciar este registo: http://hdl.handle.net/10198/9616
Título: Moire interferometry assessement of residual stress variation in depth on a shot peened surface
Autor: Ribeiro, J.E.
Monteiro, Jaime
Lopes, H.
Vaz, M.A.P.
Palavras-chave: FEM
Moiré interferometry
Residual stress
Data: 2011
Citação: Ribeiro, J.E.; Monteiro, Jaime; Lopes, H.; Vaz, M.A.P. (2011). Moire interferometry assessement of residual stress variation in depth on a shot peened surface. Strain. ISSN 0039-2103. 47, p. E542-E550
Resumo: The main goal of this work was the development of experimental techniques to measure in depth non-uniform residual stresses, as alternative to the more conventional hole-drilling method with strain gauges. The proposed experimental methodology is based on moire interferometry. This high resolution field technique allows in-plane displacement assessment without contact. Grating replication techniques were also developed to record high quality diffraction gratings onto the specimen's surface. A laser interferometry setup was implemented to generate the master grating (virtual). The stress relaxation was promoted by blind hole-drilling and the obtained fringe patterns were video recorded. Image processing techniques were applied to assess the in-plane strain full-field. A finite elements code (FEM), ANSYS (R), was used to simulate the stress relaxation process and to calculate the hole-drilling calibration constants.
Peer review: yes
URI: http://hdl.handle.net/10198/9616
DOI: 10.1111/j.1475-1305.2009.00653.x
Aparece nas colecções:ESTiG - Artigos em Revistas Indexados à WoS/Scopus

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