Your search for Keyword "fracture."resulted in 80 records.
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- Title: POST CONTROL, POST EARTHQUAKE AND TEMPERATURE RELEASE OF DRY SNOW SLAB AVALANCHES
- Date: 2023-10-08
- Authors: David M. McClung, Bill Glude
- Description: Field observations show there are three related situations in which dry snow slab avalanches re-lease with delays after strain perturbations or temper...
- Object ID: ISSW2023_P1.53.pdf
- Keywords: viscoelastic, alpine snow, quasi-brittle fracture; snow avalanche; fracture delay
- View additional details about POST CONTROL, POST EARTHQUAKE AND TEMPERATURE RELEASE OF DRY SNOW SLAB AVALANCHES
- 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: 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: 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
- Title: Anti-crack nucleation in snowpacks without assuming initial defects: modeling dry snow slab avalanches
- Date: 2018-10-07
- Authors: Philipp L. Rosendahl, Vera Lübke, Philipp Weißgraeber
- Description: To improve modeling of slab avalanche release we propose a new mechanical snowpack model and a novel criterion for anticrack nucleation. The model all...
- Object ID: ISSW2018_O10.6.pdf
- Keywords: slab avalanche release, fracture mechanics, predictive modeling, snowpack model
- View additional details about Anti-crack nucleation in snowpacks without assuming initial defects: modeling dry snow slab avalanches
- Title: Dynamic crack propagation in weak snowpack layers: insights from high-resolution, high-speed photography
- Date: 2018-10-07
- Authors: Bastian Bergfeld, Alec van Herwijnen, Jürg Dual, Jürg Schweizer
- Description: To assess the avalanche triggering potential, information on failure initiation and crack propagation is required. While in the past failure initiatio...
- Object ID: ISSW2018_P10.12.pdf
- Keywords: snow avalanche, fracture, crack speed, slab, weak layer, high-speed photography
- View additional details about Dynamic crack propagation in weak snowpack layers: insights from high-resolution, high-speed photography
- Title: The Effect of Increasing Load on Weak Layer Fracture
- Date: 2016-10-02
- Authors: Karl W. Birkeland, Alec van Herwijnen
- Description: Avalanches failing on buried weak layers tend to be easier to trigger during or immediately following snowfall, suggesting that loading favorably chan...
- Object ID: ISSW16_O1.03.pdf
- Keywords: fracture, loading, slab, particle tracking velocimetry, propagation saw test
- View additional details about The Effect of Increasing Load on Weak Layer Fracture
- Title: The Role of Collapse in Avalanche Release: Review and Implications for Practitioners and Future Research
- Date: 2016-10-02
- Authors: Edward Bair, Johan Gaume, Alec van Herwijnen
- Description: Reports of collapses and whumpfing sounds and their links to instability in the snowpack have been around for decades, but like many areas of snow sci...
- Object ID: ISSW16_O1.04.pdf
- Keywords: fracture, collapse, anticrack, extended column test, propagation saw test
- View additional details about The Role of Collapse in Avalanche Release: Review and Implications for Practitioners and Future Research
- Title: Wet-Snow Fracture Propagation
- Date: 2016-10-02
- Authors: Ingrid Reiweger, Markus Zöchling, Martin Forster, Thomas Wiesinger, Christoph Mitterer
- Description: Fracture propagation within wet snow is a key issue in order to understand and predict wet-snow slab avalanches. In our preliminary field study we inv...
- Object ID: ISSW16_P1.33.pdf
- Keywords: wet snow, fracture propagation, wet-snow avalanches, propagation saw test
- View additional details about Wet-Snow Fracture Propagation
- Title: Micromechanical Analysis of Energy Release in Snow Fracture
- Date: 2016-10-02
- Authors: Anthony M. LeBaron, Daniel A. Miller
- Description: Fracture initiation and propagation in snow is paramount to understanding the avalanche process. There is ongoing discussion and debate regarding the ...
- Object ID: ISSW16_P1.34.pdf
- Keywords: fracture, energy release rate
- View additional details about Micromechanical Analysis of Energy Release in Snow Fracture
- Title: A New Mechanical Framework to Interpret Weak Layer and Slab Fracture in the Propagation Saw Test
- Date: 2016-10-02
- Authors: Lorenzo Benedetti, Jan-Thomas Fischer, Johan Gaume
- Description: This work aims to provide a mechanical model for the Propagation Saw Test (PST) based on the Euler-Bernoulli beam, allowing a description of the slab ...
- Object ID: ISSW16_P3.01.pdf
- Keywords: fracture, critical length, propagation length, mechanical model
- View additional details about A New Mechanical Framework to Interpret Weak Layer and Slab Fracture in the Propagation Saw Test
- Title: Extended Column Test: Repeatability and Comparison to Slope Stability and the Rutschblock
- Date: 2016-10-02
- Authors: Frank Techel, Matthias Walcher, Kurt Winkler
- Description: Information on snow stability is key information when assessing the avalanche situation. However, stability tests like the Extended Column Test (ECT) ...
- Object ID: ISSW16_P4.08.pdf
- Keywords: extended column test, rutschblock, test repeatability, snow stability, fracture propagation
- View additional details about Extended Column Test: Repeatability and Comparison to Slope Stability and the Rutschblock
- Title: Avalanche Release 101
- Date: 2016-10-02
- Authors: Jürg Schweizer, Benjamin Reuter, Alec van Herwijnen, Johan Gaume
- Description: Our understanding of dry-snow slab avalanche release improved over the last decade – not the least by consistently following a fracture mechani...
- Object ID: ISSW16_O1.01.pdf
- Keywords: snow failure, failure initiation, crack propagation, avalanche formation, avalanche release, fracture mechanics
- View additional details about Avalanche Release 101
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