Elastodynamic models for extending GTD to penumbra and finite size scatterers - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Access content directly
Special Issue Physics Procedia Year : 2015

Elastodynamic models for extending GTD to penumbra and finite size scatterers

Abstract

The Geometrical Theory of Diffraction (GTD) is one classical method used for modelling edge diffraction. GTD is theoretically valid for canonical infinite edges and diverges around the direction of specular reflection. To deal with finite flaws, 3D incremental models using both GTD and secondary sources have been developed. Experimental validation of these models has been performed. A GTD uniform correction, the UTD (Uniform Theory of Diffraction), has also been developed in elastodynamics in the view of designing a generic model able to correctly simulate both specular reflection and diffraction. Some UTD numerical results are presented.
Fichier principal
Vignette du fichier
HAl Djakou physics procedia.pdf (303.21 Ko) Télécharger le fichier
Origin : Publisher files allowed on an open archive
Licence : CC BY ND - Attribution - NoDerivatives

Dates and versions

cea-01753217 , version 1 (22-01-2024)

Identifiers

Cite

A. K. Djakou, Michel Darmon, Catherine Potel. Elastodynamic models for extending GTD to penumbra and finite size scatterers. Physics Procedia, 70, pp.545-549, 2015, Proceedings of the 2015 ICU International Congress on Ultrasonics, Metz, France, ⟨10.1016/j.phpro.2015.08.013⟩. ⟨cea-01753217⟩
88 View
3 Download

Altmetric

Share

Gmail Facebook X LinkedIn More