Publication
Micro-mechanical insights into the dynamics of crack propagation in snow fracture experiments
Related publications (41)
Using video detection of snow surface movements to estimate weak layer crack propagation speeds
Johan Alexandre Philippe Gaume, Bertil Trottet, Alec van Herwijnen
Dry-snow slab avalanches release due to crack propagation in a weak snow layer under a cohesive snow slab. Crack propagation speeds can provide insights into the potential size of avalanches and inform fracture and avalanche release models. Despite their i ...
CAMBRIDGE UNIV PRESS2023Crack kinematics prediction in concrete structures and assessment of their criticality
The observation of cracks in normally functioning reinforced concrete (RC) structures is expected as the tensile strength of concrete is relatively low. However, one or more of those cracks can start to propagate with increasing crack openings, localizing ...
2023Experimental investigation of dowel action using advanced measurement techniques
Aurelio Muttoni, Marko Pejatovic
Existing shear-cracked structures need to be reliably verified in order to avoid redundant interventions. Code provisions often raise shear safety and/or fatigue life concerns of the reinforcement subjected to stress concentrations due to cyclic dowel acti ...
2022Crack propagation speeds in weak snowpack layers
Johan Alexandre Philippe Gaume, Jürg Schweizer, Bertil Trottet, Grégoire Bobillier, Alec van Herwijnen
For the release of a slab avalanche, crack propagation within a weak snowpack layer below a cohesive snow slab is required. As crack speed measurements can give insight into underlying processes, we analysed three crack propagation events that occurred in ...
CAMBRIDGE UNIV PRESS2021Three-dimensional and real-scale modeling of flow regimes in dense snow avalanches
Johan Alexandre Philippe Gaume, Betty Sovilla, Xingyue Li
Snow avalanches cause fatalities and economic loss worldwide and are one of the most dangerous gravitational hazards in mountainous regions. Various flow behaviors have been reported in snow avalanches, making them challenging to be thoroughly understood a ...
2021A decohesion pathway for hydrogen embrittlement in nickel: Mechanism and quantitative prediction
William Curtin, Xiaoqing Zhou, Ali Tehranchi
Hydrogen embrittlement (HE) is a ubiquitous and catastrophic mode of fracture in metals. Here, embrittlement is considered as an intrinsic ductile-brittle transition at the crack tip, where H at the crack tip can reduce the stress intensity K-Ic for cleava ...
PERGAMON-ELSEVIER SCIENCE LTD2020Experiments and numerical modelling on angle-ply laminates under remote mode II loading
John Botsis, Georgios Pappas, Charlie Joseph Simon Blondeau
Delamination is a very frequent damage mechanism that affects the integrity of laminated composites. In this study, the effect of ply orientation on crack growth resistance was analyzed for three different anti-symmetric interfaces (+/- 30 degrees, +/- 45 ...
ELSEVIER SCI LTD2020Influence of the initial damage on fracture toughness and subcritical crack growth in a granite rock
Fracture mechanics is an important tool to assess the slope stability, since this approach offers a methodology to study the fracture stress field in the neighborhood of the joint tips and accurately predict propagation of the joints. While the fracture to ...
2020Thermal influences on macroscale rock damage
Fracture processes in rock have widespread implications in the geohazard, geomorphologic, and civil and mining engineering communities. Propagation of fractures reduces overall rock mass strength, can lead to large-scale gravitational instabilities, and ca ...
2020Influence of cracking and rough surface properties on the transfer of forces in cracked concrete
Aurelio Muttoni, Miguel Fernández Ruiz, Max Tirassa
Aggregate interlocking is acknowledged as one of the most significant actions transferring shear forces in cracked concrete structures and has been investigated for several decades. Despite the many experimental programmes and previous efforts to develop m ...
2020