Concept

Fracture de l'extrémité supérieure du fémur

Publications associées (239)

Dynamic crack propagation with cohesive elements: a methodology to address mesh dependency

In this paper, two brittle fracture problems are numerically simulated: the failure of a ceramic ring under centrifugal loading and crack branching in a PMMA strip. A three-dimensional finite element package in which cohesive elements are dynamically inser ...

2004

Immediate implant placement using injectable calcium phosphate hydraulic cement in dogs

Jacques Lemaître, Pascale Van Landuyt

Techniques allowing implant placement in extraction sockets require either high diameter implants in surgically enlarged sockets or grafting and/or regenerative procedures around implants after their primary surgical stabilization. This study aimed to eval ...

2004

Mapping of hydraulic fractures from tiltmeter measurements

Brice Tanguy Alphonse Lecampion

In considering the problem of inverse modeling of tiltmeter data for hydraulic fracture mapping, we address the issues of selecting the elastic model to represent the hydraulic fracture and limitations imposed by distance and fracture size on the informati ...

2003

Laminar ground water flow through stochastic channel networks in rock

The flow through fractured rock is of great importance for many civil engineering projects, for example, when considering the safe storage of nuclear waste or the stability and profitability of dams, tunnels and slopes. How the fluid actually flows through ...

EPFL2003

Fracture and toughening of high volume fraction ceramic particle reinforced metals

This work contributes to the fundamental understanding of fracture properties of Particle Reinforced Metal Matrix Composites (PRMMCs), by identifying the key microstructural parameters that control fracture. To this end, PRMMCs with a high volume fraction ...

EPFL2003

Crack growth across colony boundaries in binary lamellar TiAl

William Curtin

The crack growth across a boundary between two colonies, i.e. regions of differing lamellar orientation, in two-phase lamellar Ti-Al is studied computationally to quantify the influence of such boundaries on toughening, as observed in recent in-situ fractu ...

2002

Gait Features Assessment in Hip Osteoarthritis and Total Hip Replaced Patients Based on an ambulatory System (Physilog)

Kamiar Aminian, Philippe Robert, Bijan Najafi, Hooman Dejnabadi

Osteoarthritis is the most frequent joint pathology throughout the world. Obtaining objective, dynamic and quantified data allowing the evaluation of patients’ progress before and after hip arthroplasty is crucial. Gait analysis can be used for evaluating ...

2002

Spatio-temporal parameters of gait measured by an ambulatory system using miniature gyroscopes

Kamiar Aminian, Philippe Robert, Bijan Najafi

In this study we describe an ambulatory system for estimation of spatio-temporal parameters during long periods of walking. This original method based on wavelet analysis is proposed to compute the values of temporal gait parameters from the angular veloci ...

2002

Flow through a convergence : Part 1. Critical Conditions for Unstable Flow

The critical conditions leading to fracture in elongation and different types of flow instabilities were examined in uniaxial elongation and in a capillary rheometer equipped with dies having different entry profiles. Either ductile or brittle fracture may ...

2002

Fracture in nanolamellar materials: continuum and atomistic models with application to titanium aluminides

William Curtin

Molecular statics simulations of crack growth in fully lamellar Ti-Al are performed to elucidate the role of lamellar structure in determining deformation and fracture toughness in nanoscale structures. The lamellar boundaries are highly effective in inhib ...

2002

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