Coupled systems mechanics

  • 제12권6호
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  • Pages.503-517
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  • 2023
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  • 2234-2184(pISSN)
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  • 2234-2192(eISSN)
테크노프레스 (Techno-Press)
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4D full-field measurements over the entire loading history: Evaluation of different temporal interpolations

  • Ana Vrgoc (Laboratory of Experimental Mechanics, Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb) ;
  • Viktor Kosin (Universite Paris-Saclay, CentraleSupelec, ENS Paris-Saclay, CNRS LMPS-Laboratorie de Mecanique Paris-Saclay) ;
  • Clement Jailin (GE HealthCare) ;
  • Benjamin Smaniotto (Universite Paris-Saclay, CentraleSupelec, ENS Paris-Saclay, CNRS LMPS-Laboratorie de Mecanique Paris-Saclay) ;
  • Zvonimir Tomicevic (Laboratory of Experimental Mechanics, Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb) ;
  • Francois Hild (Universite Paris-Saclay, CentraleSupelec, ENS Paris-Saclay, CNRS LMPS-Laboratorie de Mecanique Paris-Saclay)
  • 투고 : 2023.05.22
  • 심사 : 2023.07.21
  • 발행 : 2023.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

Standard Digital Volume Correlation (DVC) approaches are based on pattern matching between two reconstructed volumes acquired at different stages. Such frameworks are limited by the number of scans (due to acquisition duration), and time-dependent phenomena can generally not be captured. Projection-based Digital Volume Correlation (P-DVC) measures displacement fields from series of 2D radiographs acquired at different angles and loadings, thus resulting in richer temporal sampling (compared to standard DVC). The sought displacement field is decomposed over a basis of separated variables, namely, temporal and spatial modes. This study utilizes an alternative route in which spatial modes are con-structed via scan-wise DVC, and thus only the temporal amplitudes are sought via P-DVC. This meth-od is applied to a glass fiber mat reinforced polymer specimen containing a machined notch, subjected to in-situ cyclic tension, and imaged via X-Ray Computed Tomography. Different temporal interpolations are exploited. It is shown that utilizing only one DVC displacement field (as spatial mode) was sufficient to properly capture the complex kinematics up to specimen failure.

키워드

과제정보

This work was performed within the FULLINSPECT project supported by the Croatian Science Foundation (UIP-2019-04-5460 Grant). This work was also partially supported by the French "Agence nationale de la Recherche" through the "Investissements d'avenir" program (ANR-10-EQPX-37 MATMECA Grant). VK is supported by the French-German University through the French-German Doctoral college "Sophisticated Numerical and Testing Approaches" (CDFADFDK 19-04). Discussions are acknowledged within the framework of the International Research Training Group on Computational Mechanics Techniques in High Dimensions GRK 2657 funded by the German Research Foundation (DFG) under Grant Number 433082294.

참고문헌

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