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Title: CAN WE SEE THE UNSEEN? TO BETTER UNDERSTAND THE CRACK PROPAGATION AT THE ORIGIN OF AN AVALANCHE AND THE RELATED PHYSICAL PRINCIPLES: Date: 2024-09-23; Authors: Charles-élie Goujon, Alain Duclos, Cédric Perillat, Frédéric Pourraz; Description: Propagation Saw Tests (PST) are designed to evaluate the propensity for a snowpack layer to fracture and potentially lead to an avalanche. The PST off...; Object ID: ISSW2024_O8.5.pdf; Keywords: swir, event based sensor, propagation, high speed monitoring, propagation mechanics.; View additional details about CAN WE SEE THE UNSEEN? TO BETTER UNDERSTAND THE CRACK PROPAGATION AT THE ORIGIN OF AN AVALANCHE AND THE RELATED PHYSICAL PRINCIPLES

Title: EXPERIMENTS ON SELF-SUSTAINED CRACK PROPAGATION IN AVALANCHES: Date: 2023-10-08; Authors: Bastian Bergfeld, Melin Walet, Alec van Herwijnen; Description: If a slab avalanche is triggered, how big will it be? This question is crucial for avalanche forecasters and backcountry travelers alike, yet it is di...; Object ID: ISSW2023_O2.02.pdf; Keywords: avalanche release, fracture mechanics, avalanche size, dynamic crack propagation, supershear; View additional details about EXPERIMENTS ON SELF-SUSTAINED CRACK PROPAGATION IN AVALANCHES

Title: AN INNOVATIVE PROTOCOL FOR CONDUCTING AND EXPLOITING SNOW TESTS: THE OUTCOME OF A RELIABLE FIELD EXPERIMENT AND THE DEVELOPMENT OF DIGITAL TOOLS ON SMARTPHONE: Date: 2023-10-08; Authors: Frédéric Pourraz, Alain Duclos, François Louchet; Description: The avalanche risk estimation, performed by a forecaster as well as a practitioner, is based on a limited number of parameters which are now subject t...; Object ID: ISSW2023_P1.27.pdf; Keywords: avalanche forecasting, snow tests, measurement protocol, propagation propensity, real-time sharing; View additional details about AN INNOVATIVE PROTOCOL FOR CONDUCTING AND EXPLOITING SNOW TESTS: THE OUTCOME OF A RELIABLE FIELD EXPERIMENT AND THE DEVELOPMENT OF DIGITAL TOOLS ON SMARTPHONE

Title: ON STABILITY MEASUREMENTS AND MODELING: Date: 2023-10-08; Authors: Jürg Schweizer, Benjamin Reuter, Christoph Mitterer, Fabiano Monti, Stephanie Mayer; Description: Recent developments in snow stability modeling demonstrated the great potential of numerical snow cover modeling for avalanche forecasting. The recent...; Object ID: ISSW2023_P1.31.pdf; Keywords: snow stability, avalanche forecasting, numerical modeling, failure initiation, crack propagation; View additional details about ON STABILITY MEASUREMENTS AND MODELING

Title: FRACTURE ENERGIES RELEVANT FOR DRY-SNOW SLAB AVALANCHE RELEASE: Date: 2023-10-08; Authors: Bastian Bergfeld, Alec van Herwijnen, Gregoire Bobilier, Jürg Schweizer; Description: In our current understanding of dry-snow slab avalanche release, the crack propagation phase is composed of two parts: first, the onset of crack propa...; Object ID: ISSW2023_P1.47.pdf; Keywords: avalanche release, fracture mechanics, weak layer properties, propagation saw test; View additional details about FRACTURE ENERGIES RELEVANT FOR DRY-SNOW SLAB AVALANCHE RELEASE

Title: WHAT COULD STOP DYNAMIC CRACK PROPAGATION IN DRY SNOW SLAB AVALANCHES?: Date: 2023-10-08; Authors: Francis Meloche, Grégoire Bobilier, Louis Guillet, Francis Gauthier, Alexandre Langlois, Johan Gaume; Description: Dry snow slab avalanches are difficult to predict. The release process of dry-snow slab avalanche begins with an initial failure within a buried weak ...; Object ID: ISSW2023_P1.57.pdf; Keywords: avalanche release size, dynamic crack propagation, crack arrest, dampm, material point method, weak layer, slab, fracture; View additional details about WHAT COULD STOP DYNAMIC CRACK PROPAGATION IN DRY SNOW SLAB AVALANCHES?

Title: MODE-III FRACTURE TOUGHNESS OF ANTICRACKS IN WEAK LAYERS: MODELLING AND EXPERIMENTS: Date: 2023-10-08; Authors: Florian Rheinschmidt, Valentin Adam, Melin Walet, Jakob Schöttner, Bastian Bergfeld, Alec van Herwijnen, Philipp Weißgraeber, Philipp L. Rosendahl; Description: We propose an experimental setup and a closed-form model to identify the mode III fracture toughness of weak layers. The field experiment draws inspir...; Object ID: ISSW2023_P1.60.pdf; Keywords: fracture mechanics, propagation saw test, cross-slope anticrack propagation; View additional details about MODE-III FRACTURE TOUGHNESS OF ANTICRACKS IN WEAK LAYERS: MODELLING AND EXPERIMENTS

Title: MODELING TOUCHDOWN AND CRACK ARREST IN PROPAGATION SAW TESTS: Date: 2023-10-08; Authors: Johannes Schneider, Florian Rheinschmidt, Bastian Bergfeld, Grégoire Bobillier, Alec van Herwijnen, Philipp Weißgraeber, Philipp L. Rosendahl; Description: We show that slab touchdown causes a decrease in energy release rate, which can lead to crack arrest in propagation saw tests. To this end, we develop...; Object ID: ISSW2023_P1.61.pdf; Keywords: snowpack stability, propagation saw test, crack arrest, fracture mechanics, predictive modeling; View additional details about MODELING TOUCHDOWN AND CRACK ARREST IN PROPAGATION SAW TESTS

Title: SPEED MATTERS: INVESTIGATING THE RELATION BETWEEN WEAK LAYER CRACK SPEED AND PROPAGATION DISTANCE: Date: 2023-10-08; Authors: Alec van Herwijnen, Bastian Bergfeld, Melin Walet, Andreas Fichtner, Karl Birkeland; Description: Crack propagation in weak snowpack layers is a fundamental process in slab avalanche formation. It is now widely accepted that before an avalanche rel...; Object ID: ISSW2023_O9.02.pdf; Keywords: crack propagation, crack speed, propagation distance, avalanche size; View additional details about SPEED MATTERS: INVESTIGATING THE RELATION BETWEEN WEAK LAYER CRACK SPEED AND PROPAGATION DISTANCE

Title: WHAT'S THE SCORE - SCORING SNOWPITS FOR BETTER COMMUNICATION OF STABILITY ASSESSMENTS: Date: 2023-10-08; Authors: Dave Richards, Karl Birkeland, Doug Chabot, Jim Earl; Description: Digging snowpits and utilizing those data for assessing stability is critically important for avalanche professionals who are managing and mitigating...; Object ID: ISSW2023_O11.02.pdf; Keywords: snowpit, scoring, communication, stability, propagation, structure, strength; View additional details about WHAT'S THE SCORE - SCORING SNOWPITS FOR BETTER COMMUNICATION OF STABILITY ASSESSMENTS

Title: A FIELD TEST FOR THE MIXED-MODE FRACTURE TOUGHNESS OF WEAK LAYERS: Date: 2023-10-08; Authors: Valentin Adam, Bastian Bergfeld, Florian Rheinschmidt, Melin D. E. Walet, Jakob Schöttner, Philipp Weißgraeber, Alec van Herwijnen, Philipp L. Rosendahl; Description: The triggering mechanisms of dry snow slab avalanches are subjected to a mixed-mode loading scenario driven by different dynamic loading conditions an...; Object ID: ISSW2023_O16.05.pdf; Keywords: dry-snow slab avalanches, fracture toughness, anticrack propagation, mixed-mode loading, weak snow layers; View additional details about A FIELD TEST FOR THE MIXED-MODE FRACTURE TOUGHNESS OF WEAK LAYERS

Title: THE EFFECT OF PROPAGATION SAW TEST GEOMETRIES ON CRITICAL CUT LENGTH: Date: 2023-10-08; Authors: Bastian Bergfeld, Karl Birkeland, Valentin Adam, Philipp L. Rosendahl, Alec van Herwijnen; Description: Information on failure initiation and crack propagation is essential for assessing avalanche triggering potential. The Propagation Saw Test (PST) is a...; Object ID: ISSW2023_P3.20.pdf; Keywords: stability test, propagation saw test, edge effect, failure initiation; View additional details about THE EFFECT OF PROPAGATION SAW TEST GEOMETRIES ON CRITICAL CUT LENGTH

Title: SUPERSHEAR CRACK PROPAGATION IN SNOW SLAB AVALANCHE RELEASE: NEW INSIGHTS FROM NUMERICAL SIMULATIONS AND FIELD MEASUREMENTS: Date: 2023-10-08; Authors: Grégoire Bobillier, Bertil Trottet, Bastian Bergfeld, Ron Simenhois, Alec van Herwijnen, Jürg Schweizer, Johan Gaume; Description: The release process of dry-snow slab avalanches begins with a localized failure within a porous, weak snow layer that lies beneath a cohesive slab. Su...; Object ID: ISSW2023_O2.01.pdf; Keywords: supershear crack propagation, numerical modeling, dry-snow slab avalanche release; View additional details about SUPERSHEAR CRACK PROPAGATION IN SNOW SLAB AVALANCHE RELEASE: NEW INSIGHTS FROM NUMERICAL SIMULATIONS AND FIELD MEASUREMENTS

Title: Unified modeling of the release and flow of snow avalanches using the Material Point Method: Date: 2018-10-07; Authors: Johan Gaume, Theodore F. Gast, Joseph Teran, Alec van Herwijnen, Chenfanfu Jiang; Description: Snow slab avalanches start with the failure of a weak snow layer buried below a cohesive snow slab. After failure, the very porous character of the we...; Object ID: ISSW2018_O01.1.pdf; Keywords: snow avalanche, crack propagation, slab, weak layer, elastoplasticity, mpm; View additional details about Unified modeling of the release and flow of snow avalanches using the Material Point Method

Title: Snowpack stabilization following storms: Field experiments and modelling of temporal changes in snow mechanical properties following loading: Date: 2018-10-07; Authors: Karl W. Birkeland, Alec van Herwijnen, Benjamin Reuter, Bastian Bergfeld; Description: Most dry slab avalanches occur during or immediately following loading by snowfall or winddeposition. In the absence of further loading avalanche acti...; Object ID: ISSW2018_O10.2.pdf; Keywords: avalanche, fracture, loading, slab, particle tracking velocimetry, propagation saw test; View additional details about Snowpack stabilization following storms: Field experiments and modelling of temporal changes in snow mechanical properties following loading

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Your search for Keyword "propagation."resulted in 79 records.