2026-06-28T20:28:00Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/587862024-07-02T13:00:09Zcom_20.500.14352_14col_20.500.14352_15

Enhancement of surface inspection by Moiré interferometry using flexible reference gratings Quiroga Mellado, Juan Antonio Martínez Antón, Juan Carlos Canabal Boutureira, Héctor Alfonso Bernabéu Martínez, Eusebio Álvaro Labajo, M. Cortés Testillano, V. We have extended the use of shadow Moiré technique to be implemented in simple curved surfaces by using a flexible grating. Dynamic visual inspection of surface micro-damages is significantly favored by the use of well adapted pliable gratings compared to the use of flat reference gratings. The experimental set-up consists of a plastic foil with a printed Ronchi grating stretched between three points which adapts to any cylindrical or conical convex surface independently of the relative orientation grating/surface. Static quantification of defects profiles is also possible with an attached CCD camera. Visual detection of defects in the range of ~30 μm in depth is obtainable. 2023-06-20T18:51:22Z 2023-06-20T18:51:22Z 2023-06-20T18:51:22Z 2001-06-01 journal article https://hdl.handle.net/20.500.14352/58786 1094-4087 10.1364/OE.8.000649 eng INDUCE BRPR-CT98-0805 open access The Optical Society Of America