Dokument-ID Dokumenttyp Autoren/innen Persönliche Herausgeber/innen Haupttitel Abstract Auflage Verlagsort Verlag Herausgeber (Institution) Erscheinungsjahr Titel des übergeordneten Werkes Jahrgang/Band ISBN Veranstaltung Veranstaltungsort Beginndatum der Veranstaltung Enddatum der Veranstaltung Ausgabe/Heft Erste Seite Letzte Seite URN DOI Lizenz Datum der Freischaltung OPUS4-41121 Beitrag zu einem Tagungsband Brunier-Coulin, F.; Sarrat, J.-L.; Cuéllar, Pablo; Philippe, P. Experimental investigation of impinging jet erosion on model cohesive granular materials Erosion of soils affects both natural landscapes and engineering constructions as embankment dams or levees. Improving the safety of such earthen structures requires in particular finding out more about the elementary mechanisms involved in soil erosion. Towards this end, an experimental work was undertaken in three steps. First, several model materials were developed, made of grains (mostly glass beads) with solid bridges at particle contacts whose mechanical yield strength can be continuously varied. Furthermore, for most of them, we succeeded in obtaining a translucent system for the purpose of direct visualization. Second, these materials were tested against surface erosion by an impinging jet to determine a critical shear stress and a kinetic coefficient. Note that an adapted device based on optical techniques (combination of Refractive Index Matching and Planar Laser Induced Fluorescence) was used specifically for the transparent media. Third, some specifically developed mechanical tests, and particularly traction tests, were implemented to estimate the mechanical strength of the solid bridges both at micro-scale (single contact) and at macro-scale (sample) and to investigate a supposed relationship with soil resistance to erosion. The European Physical Journal (EPJ) - Web of Conferences 2017 Powders and Grains 2017 – 8th International Conference on Micromechanics on Granular Media 140 8th International Conference on Micromechanics on Granular Media Montpellier, France 03.07.2017 07.07.2017 Paper 08002, 1 Paper 08002, 4 urn:nbn:de:kobv:b43-411215 10.1051/epjconf/201714008002 http://creativecommons.org/licenses/by/3.0/de/deed.de 2017-07-26