Results 11 to 20 of about 328,048 (333)

Quantitative Evaluation of Soil Structure and Strain in Three Dimensions under Shear Using X-ray Computed Tomography Image Analysis

open access: yesJournal of Imaging, 2021
The objective of this study is to quantitatively evaluate the soil structure behavior when under shear stress to understand the mechanism of shear zone formation using a micro-focus X-ray computed tomography (CT) scanner to visualize the internal samples
Shintaro Nohara, Toshifumi Mukunoki
doaj   +1 more source

Deformation Structures From Splay and Décollement Faults in the Nankai Accretionary Prism, SW Japan(IODP NanTroSEIZE Expedition 316): Evidence for Slow and Rapid Slip in Fault Rocks

open access: yesGeochemistry, Geophysics, Geosystems, 2020
Drilling during IODP NanTroSEIZE Expedition 316 led to the recovery of cores from the basal décollement in the frontal part of the Nankai accretionary prism and from a splay fault branching from the décollement at 25‐km landward of the prism toe.
O. Fabbri   +12 more
doaj   +1 more source

Kinematics and Timing Constraints in a Transpressive Tectonic Regime: The Example of the Posada-Asinara Shear Zone (NE Sardinia, Italy)

open access: yesGeosciences, 2020
Detailed geological field mapping, integrated with meso- and microstructural investigations, kinematic of the flow and finite strain analyses, combined with geochronology, are fundamental tools to obtain information on the temperature–deformation–timing ...
Rodolfo Carosi   +5 more
doaj   +1 more source

Shear zones in granular media: 3D Contact Dynamics simulation [PDF]

open access: yes, 2007
Shear zone formation is investigated in slow 3D shear flows. We simulate the linear version of the split-bottom shear cell. It is shown that the same type of wide shear zones is achieved in the presence as well as in the absence of gravity.
Ries, Alexander   +2 more
core   +1 more source

Core Precession and Global Modes in Granular Bulk Flow [PDF]

open access: yes, 2005
A transition from local to global shear zones is reported for granular flows in a modified Couette cell. The experimental geometry is a slowly rotating drum which has a stationary disc of radius R_s fixed at its bottom.
Denis Fenistein   +3 more
core   +3 more sources

Impact of Shear Zone on Rockburst in the Deep Neelum-Jehlum Hydropower Tunnel: A Numerical Modeling Approach

open access: yesEnergies, 2018
Rockburst is a hazardous phenomenon in deep tunnels influenced by geological structural planes like faults, joints, and shear planes. Small-scale shear-plane-like structures have damaging impact on the boundaries of the tunnel, which act as barrier and ...
Abdul Muntaqim Naji   +3 more
doaj   +1 more source

Transition in Interfacial Failure Mechanism of Resistance Spot Welds during Tensile–Shear Loading: Role of Fusion Zone Hardness

open access: yesMetals, 2023
The failure of resistance spot welds through the fusion zone along the sheet/sheet interface (i.e., interfacial failure) is critical for automotive crashworthiness.
Nima Nadimi, Majid Pouranvari
doaj   +1 more source

Microstructures associated with the Sottunga-Jurmo shear zone and their implications for the 1.83-1.79 Ga tectonic development of SW Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 2010
This petrographic study of rock samples from the area of a large-scale shear zone, the Sottung-Jurmo shear zone, in SW Finland, illuminates the thermal development of and strain distribution within the rocks during the last development stages of the ...
T. Torvela, C. Ehlers
doaj   +1 more source

Continuum approach to wide shear zones in quasi-static granular matter [PDF]

open access: yes, 2005
Slow and dense granular flows often exhibit narrow shear bands, making them ill-suited for a continuum description. However, smooth granular flows have been shown to occur in specific geometries such as linear shear in the absence of gravity, slow ...
G. Astarita   +7 more
core   +4 more sources

Study on Mechanical Behavior of Slip Zone Soils Under Different Factors—A Case Study

open access: yesFrontiers in Earth Science, 2022
The mechanical properties of the slip zone soil play an important role in the evolution of the loess landslides. To further understand these characteristics, a series of ring shear tests was conducted on the slip zone soils obtained from Tianshuigou ...
Kai Liu   +4 more
doaj   +1 more source

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