Photogrammetric evaluation of geometrical tolerance standards: a Darpa Suboff model case study

Abstract:

A DARPA Suboff scale model was used for the development of an analysis methodology for geometric deviations of the hull, aiming the quality control of model manufacturing process. The surface threedimensional coordinates were obtained through a photogrammetric survey and analyzed based on statistical tools. The results were classified according to the ITTC and DIN ISO geometric tolerance standards, allowing the investigation of the compliance of the model to such criteria and the study of local geometric deviations. Se utilizó un modelo a escala DARPA Suboff para el desarrollo de una metodología de análisis para las desviaciones geométricas del casco, con el objetivo de controlar la calidad del modelo del processo de fabricación. Las coordenadas tridimensionales de la superficie se obtuvieron a través de un estúdio fotogramétrico y se analizaron en base a herramientas estadísticas. Los resultados se clasificaron de acuerdo con los estándares de tolerancia geométrica del ITTC y DIN ISO, lo que permitió investigar el cumplimiento del modelo con dichos criterios y estudiar las desviaciones geométricas locales.


Reference:
ESTEVES, Filipe Rocha; SILVA JUNIOR, Helio Correa da ; KOGISHI, André Mitsuo; ANDRADE, Bernardo L.R. Photogrammetric evaluation of geometrical tolerance standards: a Darpa Suboff model case study. Ship Science and Technology, v.13, n.25, p.9-18, jul., 2019.


Access to the article on the Journal website:
https://shipjournal.co/index.php/sst/article/view/184/503


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