CAD-based Displacement Measurements with Stereo-DIC

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• 作者：John-Eric Dufour ; Beno?t Beaubier ; Fran?ois Hild ; Stéphane Roux
• 关键词：Stereocorrelation ; DIC ; Freeform surfaces ; Displacement ; Uncertainty
• 刊名：Experimental Mechanics
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：55
• 期：9
• 页码：1657-1668
• 全文大小：3,217 KB
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  21.Hild F, Roux S (2012) Digital image correlation. In: Rastogi P, Hack E (eds) Optical methods for solid mechanics. Wiley-VCH, pp 183-28
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  27.Gras R, Leclerc H, Hild F, Roux S, Schneider J (2015) Identification of a set of macroscopic elastic parameters in a 3D woven composite: uncertainty analysis and regularization. Int J Solids Struct 55:2-6CrossRef
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  29.Dufour J-E, Leclercq S, Schneider J, Hild F, Roux S (2015) Isogeometric-based 3D measurements with StereoDIC: Application to Complex Shapes. To be submitted
  30.Dufour J-E, Beaubier B, Hild F, Roux S Displacement measurements using CAD-based stereo-correlation with meshes. In: 16th International conference on experimental mechanics. European Society for Experimental Mechanics
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  32.Dufour J-E, Hild F, Roux S (20
• 作者单位：John-Eric Dufour (1) (3)
  Beno?t Beaubier (1) (2)
  Fran?ois Hild (1)
  Stéphane Roux (1)
  
  1. LMT-Cachan, ENS Cachan / CNRS / Université Paris Saclay, 61 Avenue du Président Wilson, 94235, Cachan Cedex, France
  3. SAFRAN Snecma Villaroche, Rond-point René Ravaud, 77550, Reau, France
  2. PSA Peugeot Citro?n, Centre Technique de Vélizy B, Zone aéronautique Louis Bréguet, 78140, Vélizy Villacoublay, France
  
• 刊物类别：Engineering
• 刊物主题：Mechanical Engineering
  Theoretical and Applied Mechanics
  Characterization and Evaluation Materials
  Structural Mechanics
  Engineering Fluid Dynamics
  Engineering Design
  
• 出版者：Springer Boston
• ISSN：1741-2765

文摘

A new displacement measurement technique is proposed in a stereovision setup, which uses the object of interest as the support of the correlation process. This procedure leads to a global approach to stereocorrelation. The method is presented in its general formulation and is then particularized to the case of non uniform rational B-splines (NURBS). The displacement field is directly measured as a 3D field expressed in a NURBS basis consistent with the existing geometric model. The kinematic measurements are validated against prescribed displacements of a machined Bézier patch. The feasibility in an industrial context is shown with the analysis of 3D displacement fields of a 2- m2 automotive roof panel during a welding operation. Keywords Stereocorrelation DIC Freeform surfaces Displacement Uncertainty