Results 31 to 40 of about 943,858 (341)

Implants for trochanteric fractures in Norway: the role of the trochanteric stabilizing plate—a study on 20,902 fractures from the Norwegian hip fracture register 2011–2017

open access: yesJournal of Orthopaedic Surgery and Research, 2021
Background The trochanteric stabilizing plate (TSP) is used as an adjunct to the sliding hip screw (SHS) in unstable trochanteric and subtrochanteric fractures.
Carl Erik Alm   +5 more
doaj   +1 more source

The effect of aquatic exercise on bone mineral density in older adults. A systematic review and meta-analysis

open access: yesFrontiers in Physiology, 2023
Introduction: Aquatic or water-based exercise is a very popular type of exercise in particular for people with physical limitations, joint problems and fear of falling.
Eileen Schinzel   +26 more
doaj   +1 more source

Impact and indenting damage of CVD-produced ZnS and ZnSe ceramics

open access: yesMaterials Research Express, 2020
Time series of acoustic emission pulses were excited in ductile ZnS and ZnSe ceramics either by a falling weight or by indenting the Vickers pyramid. Energy distributions in emitted acoustical emission pulses were found to be random (Poisson-like) in the
Alexandre Chmel   +3 more
doaj   +1 more source

Energy-Efficient Fracturing Based on Stress-Coupled Perforation [PDF]

open access: yesarXiv, 2023
Hydraulic fracturing is one of the key technologies for reservoir stimulation in low-permeability/unconventional oil and gas fields. In response to the high energy consumption and greenhouse gas emissions caused by extreme flow-limiting perforation in hydraulic fracturing, stress-coupled perforation technology has been proposed to promote low-energy ...
arxiv  

Finite element modelling of thin intermetallic compound layer fractures

open access: yesJournal of Mechanical Engineering and Sciences, 2017
A thin intermetallic compound (IMC) of solder ball joint induces strong stress concentration between the pad and solder where a crack propagated near the IMC layer.
Ooi Eang Pang   +4 more
doaj   +1 more source

Fracture network characterization with deep generative model based stochastic inversion [PDF]

open access: yesarXiv, 2023
The distribution of fracture network is crucial to characterize the behaviors of flow field and solute transport, especially for enhanced geothermal systems, as fractures provide preferential flow paths. However, estimating the parameters of the fracture networks and quantifying their uncertainties based on observing data is a nontrivial task because ...
arxiv  

Stress Intensity Factor Solutions for Eccentric Annular External Cracks in Notched Round Bars under Tensile Loading

open access: yesMetals, 2023
In this paper, stress intensity factor (SIF) solutions of eccentric annular external cracks in elliptical notched round bars under tension loading have been obtained from 3D finite element analysis, along with their relation to the energy release rate ...
Jesús Toribio   +3 more
doaj   +1 more source

Multi-scale approach to invasion percolation of rock fracture networks [PDF]

open access: yesJournal of Hydrology 519, 353 (2014), 2014
A multi-scale scheme for the invasion percolation of rock fracture networks with heterogeneous fracture aperture fields is proposed. Inside fractures, fluid transport is calculated on the finest scale and found to be localized in channels as a consequence of the aperture field. The channel network is characterized and reduced to a vectorized artificial
arxiv   +1 more source

Numerical Modeling of Plasticity-Induced Fatigue Crack Growth Retardation Due to Deflection in the Near-Tip Area

open access: yesMetals, 2021
This article studies the retardation effect in plasticity-induced fatigue crack growth rate for a low-medium strength steel, due to the appearance of microdeflections in the crack path.
Jesús Toribio   +2 more
doaj   +1 more source

Tensile Fracture Behavior of Progressively-Drawn Pearlitic Steels

open access: yesMetals, 2016
In this paper a study is presented of the tensile fracture behavior of progressively-drawn pearlitic steels obtained from five different cold-drawing chains, including each drawing step from the initial hot-rolled bar (not cold-drawn at all) to the final
Jesús Toribio   +5 more
doaj   +1 more source

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