نتایج جستجو برای: shear failure

تعداد نتایج: 439684  

2009
Derek E. Sawyer Peter B. Flemings Brandon Dugan John T. Germaine

[1] Clay-rich mass transport deposits (MTDs) in the Ursa Basin, Gulf of Mexico, record failures that mobilized along extensional failure planes and transformed into long runout flows. Failure proceeded retrogressively: scarp formation unloaded adjacent sediment causing extensional failure that drove successive scarp formation updip. This model is developed from three-dimensional seismic reflect...

2016
N. Rajaganesh S. Sabarinathan N. S. Azhagarasan Chitra Shankar Jaya Krishnakumar S. Swathi

BACKGROUND Chairside softliners are used more frequently than is reported and studies regarding the bond strength of chairside softliners to heat-polymerized denture base resin are few and limited. Hence, this study was conducted to comparatively evaluate the shear bond strength of two chairside soft relining materials viz., autopolymerizing plasticized acrylic resin liner and a silicone-based ...

Journal: :Geomatics, Natural Hazards and Risk 2023

The strength deterioration and fracture tendency of freeze-thaw rock determine the construction operation safety engineering. This article conducted compression-shear composite load tests on sandstones with various saturations to examine failure law rocks in cold climates contributing elements degradation. It was found that an increase saturation loading angle, compressive elastic modulus dropp...

2002
Joel P. Conte

The purpose of this paper is to evaluate the time-invariant reliability of reinforced concrete beams designed under the provisions of the ACI Building Code. A wide range of practical design situations is considered. The beams are subjected to bending, shear, and torsion. The interaction between shear and torsion is considered via an elliptical failure surface defined in the shear-torsion stress...

2009
Derek E. Sawyer Peter B. Flemings Brandon Dugan John T. Germaine

6 [1] Clay-rich mass transport deposits (MTDs) in the Ursa Basin, Gulf of Mexico, record 7 failures that mobilized along extensional failure planes and transformed into long runout 8 flows. Failure proceeded retrogressively: scarp formation unloaded adjacent sediment 9 causing extensional failure that drove successive scarp formation updip. This model is 10 developed from three-dimensional seis...

2008
Jonny Rutqvist George J. Moridis Tarun Grover Timothy Collett

In this simulation study, we analyzed the geomechanical response of two known Class 3 permafrost deposits: the Mallik (Northwest Territories, Canada) deposit and Mount Elbert (Alaska, USA) deposit. Gas was produced from these deposits at constant pressure using horizontal wells placed at the top of the hydrate layer (HL). The depressurization-induced dissociation begins at the well bore, and th...

2009
Chung-Yun Hse Feng Fu Hui Pan

Liquefaction of spent creosote-treated wood was studied to determine the technological practicability of its application in converting treated wood waste into resin adhesives. A total of 144 plywood panels were fabricated with experimental variables included 2 phenol to wood (P/W) ratios in liquefaction, 6 resin formulations (3 formaldehyde/liquefied wood (F/LW) ratios × 2 replications), 6 glue...

2017
Jung-Jin Lee Jung-Yun Choi Jae-Min Seo

PURPOSE The purpose of this study was to evaluate the effect of nano-structured alumina surface coating on shear bond strength between Y-TZP ceramic and various dual-cured resin cements. MATERIALS AND METHODS A total of 90 disk-shaped zirconia specimens (HASS CO., Gangneung, Korea) were divided into three groups by surface treatment method: (1) airborne particle abrasion, (2) tribochemicalsil...

M Aghaie-Khafri, M.H Sheikh-Ansari

Semi-solid materials undergo strain localization and shear band formation as a result of granular nature of semi-solid deformation. In the present study, to analyze the shear localization, a unified viscoplastic constitutive model was developed for the homogeneous flow. Then, a linearized analysis of the stability performed by examining the necessary condition for the perturbation growth. For t...

Journal: :PloS one 2016
Mary Hammes Michael Boghosian Kevin Cassel Sydeaka Watson Brian Funaki Taral Doshi S M Javid Mahmoudzadeh Akherat Jane Hines Fredric Coe

BACKGROUND An autogenous arteriovenous fistula is the optimal vascular access for hemodialysis. In the case of brachiocephalic fistula, cephalic arch stenosis commonly develops leading to access failure. We have hypothesized that a contribution to fistula failure is low wall shear stress resulting from post-fistula creation hemodynamic changes that occur in the cephalic arch. METHODS Twenty-t...

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