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Metwally K, Lubeigt E, Rakotonarivo S, et al. Weld inspection by focused adjoint method. Ultrasonics. 2017;83:80-87doi: 10.1016/j.ultras.2017.08.009.
Metwally, K., Lubeigt, E., Rakotonarivo, S., Chaix, J. F., Baqué, F., Gobillot, G., & Mensah, S. (2018). Weld inspection by focused adjoint method. Ultrasonics, 8380-87. https://doi.org/10.1016/j.ultras.2017.08.009
Metwally, Khaled, et al. "Weld inspection by focused adjoint method." Ultrasonics vol. 83 (2018): 80-87. doi: https://doi.org/10.1016/j.ultras.2017.08.009
Metwally K, Lubeigt E, Rakotonarivo S, Chaix JF, Baqué F, Gobillot G, Mensah S. Weld inspection by focused adjoint method. Ultrasonics. 2018 Feb;83:80-87. doi: 10.1016/j.ultras.2017.08.009. Epub 2017 Aug 24. PMID: 28863856.
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Ultrasonics. 2018 Feb;83:80-87. doi: 10.1016/j.ultras.2017.08.009. Epub 2017 Aug 24.

Weld inspection by focused adjoint method.

Ultrasonics

Khaled Metwally, Emma Lubeigt, Sandrine Rakotonarivo, Jean-François Chaix, François Baqué, Gilles Gobillot, Serge Mensah

Affiliations

  1. Aix-Marseille Université, CNRS, Centrale Marseille, LMA, Marseille, France.
  2. Aix-Marseille Université, CNRS, Centrale Marseille, LMA, Marseille, France; CEA, Centre de Cadarache, 13108 Saint-Paul-Lez-Durance Cedex, France.
  3. CEA, Centre de Cadarache, 13108 Saint-Paul-Lez-Durance Cedex, France.
  4. Aix-Marseille Université, CNRS, Centrale Marseille, LMA, Marseille, France. Electronic address: [email protected].

PMID: 28863856 DOI: 10.1016/j.ultras.2017.08.009

Abstract

This paper reports a methodology for the non-destructive ultrasonic evaluation of welds, based on probing, residue back-focusing and topological energy calculation using an enhanced (focused) adjoint method. The proposed method combines the advantages of time reversal to compensate for the cumulative distorsions experienced by a wave propagating in a heterogeneous medium, and topological imaging to highlight the defect location. The synergistic effect of this combined approach makes it possible to detect anomalies in the most efficient way. The method paves the way towards a matched-insonification imaging of anomalies in anisotropic media.

Copyright © 2017 Elsevier B.V. All rights reserved.

Keywords: Adjoint method; Finite element modeling; Topological energy; Wave focusing; Weld inspection

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