Item: A FIELD TEST FOR THE MIXED-MODE FRACTURE TOUGHNESS OF WEAK LAYERS
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Title: A FIELD TEST FOR THE MIXED-MODE FRACTURE TOUGHNESS OF WEAK LAYERS
Proceedings: International Snow Science Workshop Proceedings 2023, Bend, Oregon
Authors:
- Valentin Adam [ Technical University of Darmstadt, Institute of Structural Mechanics and Design, Darmstadt, Germany ] [ WSL Institute for Snow and Avalanche Research SLF, Davos Dorf, Switzerland ]
- Bastian Bergfeld [ WSL Institute for Snow and Avalanche Research SLF, Davos Dorf, Switzerland ]
- Florian Rheinschmidt [ Technical University of Darmstadt, Institute of Structural Mechanics and Design, Darmstadt, Germany ]
- Melin D. E. Walet [ WSL Institute for Snow and Avalanche Research SLF, Davos Dorf, Switzerland ]
- Jakob Schöttner [ WSL Institute for Snow and Avalanche Research SLF, Davos Dorf, Switzerland ]
- Philipp Weißgraeber [ University of Rostock, Chair of Lighweight Design, Rostock, Germany ]
- Alec van Herwijnen [ WSL Institute for Snow and Avalanche Research SLF, Davos Dorf, Switzerland ]
- Philipp L. Rosendahl [ Technical University of Darmstadt, Institute of Structural Mechanics and Design, Darmstadt, Germany ]
Date: 2023-10-08
Abstract: The triggering mechanisms of dry snow slab avalanches are subjected to a mixed-mode loading scenario driven by different dynamic loading conditions and the natural inclined terrain. However, standard propagation saw tests, which are common to determine the fracture toughness of weak layers, almost exclusively cover the slope-normal regime (mode I) of the anticrack phenomena within these layers. By employing a mechanical model, we introduce a novel conclusive experimental setup that effectively addresses the thus far unexplored shear-influence regime (mode II).
Object ID: ISSW2023_O16.05.pdf
Language of Article: English
Presenter(s): Valentin Adam
Keywords: dry-snow slab avalanches, fracture toughness, anticrack propagation, mixed-mode loading, weak snow layers
Page Number(s): 1261 - 1266
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