Your search for Keyword "fracture."resulted in 80 records.
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- Title: Photogrammetry of Fracture Lines and Avalanche Terrain: Potential Applications to Research and Hazard Mitigation Projects
- Date: 2014-09-29
- Authors: Dave Gauthier, Michael Conlan, Bruce Jamieson
- Description: Recent advances in both digital photography and computer processing power has led to the ability to generate detailed, richly coloured three-dimension...
- Object ID: ISSW14_paper_O5.02.pdf
- Keywords: fracture lines, terrain mapping, hazard mitigation, investigations
- View additional details about Photogrammetry of Fracture Lines and Avalanche Terrain: Potential Applications to Research and Hazard Mitigation Projects
- Title: An Energy-Based Microstructural Constitutive Model for Fracture in Snow
- Date: 2014-09-29
- Authors: Anthony M. LeBaron, Daniel A. Miller
- Description: Understanding fracture initiation and propagation in snow is paramount to avalanche science. There is ongoing discussion and debate regarding the mode...
- Object ID: ISSW14_paper_O6.01.pdf
- Keywords: fracture, energy release rate
- View additional details about An Energy-Based Microstructural Constitutive Model for Fracture in Snow
- Title: The Role of Slabs and Weak Layers in Fracture Arrest
- Date: 2014-09-29
- Authors: Karl W. Birkeland, Alec van Herwijnen, Eric Knoff, Mark Staples, Edward Bair, Ron Simenhois
- Description: Though recent work on fracture has provided us with new stability tests and improved our knowledge of avalanche release, our understanding of fracture...
- Object ID: ISSW14_paper_O7.01.pdf
- Keywords: fracture, fracture arrest, slab, weak layer, stability tests
- View additional details about The Role of Slabs and Weak Layers in Fracture Arrest
- Title: On How the Tensile Strength of the Slab Affects Crack Propagation Propensity
- Date: 2014-09-29
- Authors: Jürg Schweizer, Benjamin Reuter, Alec van Herwijnen, Dave Gauthier, Bruce Jamieson
- Description: The release of a dry-snow slab avalanche is preceded by a series of fractures. The two key processes involved are (1) failure initiation within the we...
- Object ID: ISSW14_paper_O7.02.pdf
- Keywords: avalanche release, snow stability evaluation, avalanche forecasting, fracture
- View additional details about On How the Tensile Strength of the Slab Affects Crack Propagation Propensity
- Title: What Do Longer Tests Tell Us About Fracture and Stability?
- Date: 2014-09-29
- Authors: Edward H. Bair, Ron Simenhois, Alec van Herwijnen, Karl Birkeland
- Description: Extended Column Tests (ECT) and Propagation Saw Tests (PST) are used to assess crack propagation; that is, the likelihood of a crack self-propagating....
- Object ID: ISSW14_paper_O7.03.pdf
- Keywords: stability tests, extended column test, propagation saw test, fracture.
- View additional details about What Do Longer Tests Tell Us About Fracture and Stability?
- Title: Fracture Speeds of Triggered Avalanches
- Date: 2014-09-29
- Authors: David Hamre, Ron Simenhois, Karl W. Birkeland
- Description: Observations by practitioners suggest that fracture speeds are often much faster than recently reported measurements. These measurements include speed...
- Object ID: ISSW14_paper_O7.04.pdf
- Keywords: avalanche, video, fracture speed
- View additional details about Fracture Speeds of Triggered Avalanches
- Title: The PST with a Twist: Comparing the Standard PST to the Cross Slope PST
- Date: 2014-09-29
- Authors: Eric Knoff
- Description: In recent years, the propagation saw test (PST) gained popularity for both avalanche professionals and backcountry recreationalists. A limiting factor...
- Object ID: ISSW14_paper_P2.30.pdf
- Keywords: propagation saw test (pst), cross-slope propagation saw test (cpst), extended columntest (ect), critical cut length, slope-angle, fracture propagation
- View additional details about The PST with a Twist: Comparing the Standard PST to the Cross Slope PST
- Title: On How to Measure Snow Mechanical Properties Relevant to Slab Avalanche Release
- Date: 2013-10-07
- Authors: Benjamin Reuter, Martin Proksch, Henning Loewe, Alec van Herwijnen, Jürg Schweizer
- Description: The release of a slab avalanche is preceded by a sequence of fractures. The main
material properties relevant for the fracture processes are the spec...
- Object ID: ISSW13_paper_O2-02.pdf
- Keywords: snow microstructure, snow mechanical properties, snow fracture, snow stability evaluation, avalanche release
- View additional details about On How to Measure Snow Mechanical Properties Relevant to Slab Avalanche Release
- Title: Linking Weather Conditions to Snow Property Variations
- Date: 2013-10-07
- Authors: Benjamin Reuter, Jürg Schweizer
- Description: One of the challenges to modern avalanche forecasting is to enhance the forecasts’ content with information on how snow instability varies in t...
- Object ID: ISSW13_paper_P4-08.pdf
- Keywords: snow microstructure, snow properties, fracture, snow stability, spatial variability, weather
- View additional details about Linking Weather Conditions to Snow Property Variations
- Title: Slab Avalanche Crown Surface Fractography: Observations and Applications
- Date: 2012
- Authors: Dave Gauthier
- Description: Fractography is the study of the morphological fracture surface features in artificial and natural materials, including bone and rock. Several pattern...
- Object ID: issw-2012-115-120.pdf
- Keywords: crack propagation, fracture-line, crowns
- View additional details about Slab Avalanche Crown Surface Fractography: Observations and Applications
- Title: Properties of Weak Layers Composed of Precipitation Particles In and Near Avalanche Starting Zones in Japan
- Date: 2012
- Authors: Shinji Ikeda, Tomoyuki Noro
- Description: To gain further insight into the properties of weak layers composed of precipitation
particles(PP weak layer), we analyzed 18 measurement datasets. A...
- Object ID: issw-2012-586-590.pdf
- Keywords: weak layer, fracture lines, snow crystals, avalanche forecast
- View additional details about Properties of Weak Layers Composed of Precipitation Particles In and Near Avalanche Starting Zones in Japan
- Title: The Propagation Saw Test (PST): A Review of its Development, Applications, and Recent Research
- Date: 2012
- Authors: Dave Gauthier, Bruce Jamieson
- Description: The Propagation Saw Test (PST) method was developed independently in Switzerland and in Canada in 2005 and 2006. It was inspired partly by observation...
- Object ID: issw-2012-1047-1053.pdf
- Keywords: fracture propagation, snow stability tests, avalanche safety
- View additional details about The Propagation Saw Test (PST): A Review of its Development, Applications, and Recent Research
- Title: Snowpack Properties of Unstable Wet Snow Slopes: Observations From the Swiss Alps
- Date: 2010
- Authors: Frank Techel, Christine Pielmeier
- Description: Next to meteorological parameters, snowpack properties play a major role in the formation of wet snow avalanches. We investigated profiles observed at...
- Object ID: ISSW_O-036.pdf
- Keywords: wet snow, snow stability, fracture line profiles, snowpack properties
- View additional details about Snowpack Properties of Unstable Wet Snow Slopes: Observations From the Swiss Alps
- Title: Numerical Modeling of Fracture Propagation in Slabs
- Date: 2010
- Authors: Chris Borstad, David McClung
- Description: We present the results of numerical simulations of tensile failure of snow samples. Several material models for quasibrittle tensile failure were impl...
- Object ID: ISSW_O-042.pdf
- Keywords: fracture propagation, slab avalanche, elastic modulus, fracture energy
- View additional details about Numerical Modeling of Fracture Propagation in Slabs
- Title: A Field Method for Measuring Slab Stiffness and Weak Layer Fracture Energy
- Date: 2010
- Authors: Alec van Herwijnen, Joachim Heierli
- Description: Traditional field measurements, such as snow profiles and stability tests, are widely used to provide information on snow cover stability for avalanch...
- Object ID: ISSW_O-044.pdf
- Keywords: fracture energy, slab, avalanche forecasting,
- View additional details about A Field Method for Measuring Slab Stiffness and Weak Layer Fracture Energy
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