Characterization and modeling of ultrasonic structural noise in the multiple scattering regime

T. Bedetti; V. Dorval; F. Jenson; A. Derode

doi:10.1063/1.4789174

Characterization and modeling of ultrasonic structural noise in the multiple scattering regime

T. Bedetti ¹ V. Dorval ¹ F. Jenson ¹ A. Derode ²

1 DISC - Département Imagerie et Simulation pour le Contrôle

Abstract : Multiple scattering can occur when performing ultrasonic measurements on highly scattering materials such as coarse grain steel or concrete. It constitutes in general a limiting factor for NDE techniques. In this communication, a method to simulate the structural noise due to multiple scattering is described. It requires three parameters: the diffusion constant, the elastic mean free path and the correlation distance. A method to obtain these parameters based on a single measurement procedure is presented. This approach has been applied to samples of coarse grain steel. The backscattered noise has been calculated for different probes and compared to experimental signals.

Keywords : Ultrasonic Grain Noise Multiple Scattering

Type de document :

Communication dans un congrès

39th Annual Review of Progress in Quantative Nondestructive Evaluation (QNDE), Jul 2012, Denver, United States. 1511, pp.1158-1165, 2013, Review of progress in quantitative nondestructive evaluation, vols 32a and 32b. AIP Conference Proceedings. 〈10.1063/1.4789174〉

Domaine :

Physique [physics]

Liste complète des métadonnées

https://hal-cea.archives-ouvertes.fr/cea-01828194
Contributeur : Léna Le Roy <>
Soumis le : mardi 3 juillet 2018 - 09:36:15
Dernière modification le : mercredi 23 janvier 2019 - 14:39:24

Characterization and modeling of ultrasonic structural noise in the multiple scattering regime

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Characterization and modeling of ultrasonic structural noise in the multiple scattering regime

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