Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Estimating the material parameters of an inhomogeneous poroelastic plate from ultrasonic measurements in water

Abstract : The estimation of poroelastic material parameters based on ultrasound measurements is considered. The acoustical characterisation of poroelastic materials based on various measurements is typically carried out by minimising a cost functional of model residuals, such as the least squares functional. With a limited number of unknown parameters, least squares type approaches can provide both reliable parameter and error estimates. With an increasing number of parameters, both the least squares parameter estimates and, in particular, the error estimates often become unreliable. In this paper, the estimation of the material parameters of an inhomogeneous poroelastic (Biot) plate in the Bayesian framework for inverse problems is considered. Reflection and transmission measurements are performed and 11 poroelastic parameters, as well as 4 measurement setup-related nuisance parameters, are estimated. A Markov chain Monte Carlo algorithm is employed for the computational inference to assess the actual uncertainty of the estimated parameters. The results suggest that the proposed approach for poroelastic material characterisation can reveal the heterogeneities in the object, and yield reliable parameter and uncertainty estimates.
Type de document :
Article dans une revue
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-02391305
Contributeur : Jean-Philippe Groby <>
Soumis le : mardi 3 décembre 2019 - 15:01:31
Dernière modification le : jeudi 21 janvier 2021 - 16:00:51

Lien texte intégral

Identifiants

Collections

Citation

Matti Niskanen, Aroune Duclos, Olivier Dazel, Jean-Philippe Groby, Jari Kaipio, et al.. Estimating the material parameters of an inhomogeneous poroelastic plate from ultrasonic measurements in water. Journal of the Acoustical Society of America, Acoustical Society of America, 2019, 146 (4), pp.2596-2607. ⟨10.1121/1.5129369⟩. ⟨hal-02391305⟩

Partager

Métriques

Consultations de la notice

401