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Determination of the material damping ratio with the bender element test / Lutz Karl in Journal of geotechnical and geoenvironmental engineering, Vol. 134 n°12 (Décembre 2008) 

Public ISBD [article]  in Journal of geotechnical and geoenvironmental engineering > Vol. 134 n°12 (Décembre 2008) . - pp. 1743–1756 Titre : Determination of the material damping ratio with the bender element test Type de document : texte imprimé Auteurs : Lutz Karl, Auteur ; Haegeman, Wim, Auteur ; Degrande, Geert, Auteur Année de publication : 2009 Article en page(s) : pp. 1743–1756 Note générale : Geotechnical and geoenvironmental engineering Langues : Anglais (eng) Mots-clés : Damping  Wave  attenuation  Wave  velocity  Seismic  effects  Vibration  Wave  attenuation  Traffic Résumé : The bender element test has shown to be a reliable tool to determine the shear wave velocity. This paper aims to extend the bender element technique to also measure the material damping ratio in a triaxial cell. Three different interpretation techniques are developed for this purpose. The first technique uses a modal test of a cylindrical soil specimen in a triaxial cell, the second approach uses multiple arrivals of a bender element signal, and third, a self-correcting method using different travel paths is presented. These methods are applied on test results on undisturbed samples of a silt and a heavily overconsolidated clay, and show promising results for the assessment of the material damping ratio. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%291090-0241%282008%29134%3A12%281 [...] [article] Determination of the material damping ratio with the bender element test [texte imprimé] / Lutz Karl, Auteur ; Haegeman, Wim, Auteur ; Degrande, Geert, Auteur . - 2009 . - pp. 1743–1756. Geotechnical and geoenvironmental engineering Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 134 n°12 (Décembre 2008) . - pp. 1743–1756 Mots-clés : Damping  Wave  attenuation  Wave  velocity  Seismic  effects  Vibration  Wave  attenuation  Traffic Résumé : The bender element test has shown to be a reliable tool to determine the shear wave velocity. This paper aims to extend the bender element technique to also measure the material damping ratio in a triaxial cell. Three different interpretation techniques are developed for this purpose. The first technique uses a modal test of a cylindrical soil specimen in a triaxial cell, the second approach uses multiple arrivals of a bender element signal, and third, a self-correcting method using different travel paths is presented. These methods are applied on test results on undisturbed samples of a silt and a heavily overconsolidated clay, and show promising results for the assessment of the material damping ratio. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%291090-0241%282008%29134%3A12%281 [...]