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A reverse engineering approach to measure the deformations of a sailing yacht

Chapter
Part of the Lecture Notes in Mechanical Engineering book series (LNME)

Abstract

In this work, a multidisciplinary experience, aimed to study the permanent deformations of the hull of a regatta sailing yacht is described. In particular, a procedure to compare two different surfaces of the hull of a small sailing yacht, designed and manufactured at the University of Palermo, has been developed. The first one represents the original CAD model while the second one has been obtained by means of a reverse engineering approach. The reverse engineering process was performed through an automatic close-range photogrammetry survey, that has allowed to obtain very accurate measures of the hull, and a 3D modelling step by the well-known 3D computer graphics software Rhinoceros. The reverse engineering model was checked through two different procedures implemented by the graphical algorithm editor Grasshopper. The first procedure has allowed to compare the photogrammetric measurements with the rebuilt surface, in order to verify if the reverse engineering process has led to reliable results. The second has been implement to measure the deviations between the original CAD model and the rebuilt surface of the hull. This procedure has given the possibility to highlight any permanent deformation of the hull due to errors during the production phase or to excessive loads during its use. The obtained results have demonstrated that the developed procedure is very efficient and able to give detailed information on the deviation values of the two compared surfaces.

Keywords

reverse engineering close range photogrammetry CAE tools sailing yacht generative algorithms 

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.DARCHUniversità di PalermoPalermoItaly
  2. 2.DICGIMUniversità di PalermoPalermoItaly
  3. 3.DICAMUniversità di PalermoPalermoItaly

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