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|Título:||Moire interferometry assessement of residual stress variation in depth on a shot peened surface|
|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.|
|Aparece nas colecções:||ESTiG - Artigos em Revistas Indexados à WoS/Scopus|
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|Strain_47_E542_2011.pdf||698,46 kB||Adobe PDF||Ver/Abrir Acesso Restrito. Solicitar cópia ao autor!|
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