Search results for "Buckle"

Evaluation of thin film adhesion to a compliant substrate by the analysis of progressive buckling in the fragmentation test

2009

The interface toughness of a thin coating/compliant substrate system is estimated based on the evolution of coating buckle patterns in the fragmentation test. The linear density of coating buckles as a function of applied strain is determined experimentally for a SiOx coating deposited on a polyethylene terephthalate film. A three-dimensional non-linear finite element model is developed to simulate the process of buckle formation in a single narrow coating strip. The elastic energy released during buckling-driven delamination is obtained from the energy balance in the system before and after the buckling event. Both the interface adhesion and the total energy release rate, which includes th…

Plaques-boucles byzantines et apparentées de la période VIe-VIIe siècle trouvées en France

2014

The paper provides an inventory of buckle plates thought to be Byzantine found in France : the Sucidava type and its offshoots, those with an openwork cross or in the form of a cross, the family of buckle plates in the shapes of lyres or tongues, and a few individual pieces. Relatively numerous, these sartorial accessories enjoyed a popularity that has ensured their recognition locally even today.

Corrigendum: Generalized Buckley–Leverett theory for two-phase flow in porous media

2012

Generalized Buckley–Leverett theory for two-phase flow in porous media

2011

Hysteresis and fluid entrapment pose unresolved problems for the theory of flow in porous media. A generalized macroscopic mixture theory for immiscible two-phase displacement in porous media (Hilfer 2006b Phys. Rev. E 73 016307) has introduced percolating and nonpercolating phases. It is studied here in an analytically tractable hyperbolic limit. In this limit a fractional flow formulation exists, that resembles the traditional theory. The Riemann problem is solved analytically in one dimension by the method of characteristics. Initial and boundary value problems exhibit shocks and rarefaction waves similar to the traditional Buckley-Leverett theory. However, contrary to the traditional th…

Les plaques-boucles mérovingiennes ornées d'une croix encadrée par deux griffons : à propos d'une découverte faite à Fleurey-sur-Ouche (Côte-d'Or)

2010

The presentation of this copper alloy belt buckle decorated with a cross flanked by two griffons from Fleurey-sur- Ouche (Côte-d'Or), gives us the opportunity to review our knowledge of this type of buckle, the corpus of which has been recently enriched by new examples. Even though the fifteen known pieces can be categorized in the group D defined by the characteristic finds of the Burgundian kingdom, the iconographical theme remains quite diverse. Also, discoveries have been made all over this vast area, underlining the existence of several workshops, not only in the Jura put also in the Lauragais area.

Analysis of thin film cracking and buckling on compliant substrate by fragmentation test

2007

Application of coating fragmentation test for determination of coating properties is considered. A probabilistic model of coating fragmentation under uniaxial tensile loading is applied for coating and interface property identification of thin brittle coating/polymer substrate system. A finite element model is developed to simulate the process of buckle formation in coating strips during fragmentation test. The measured buckle geometry parameters and buckle density evolution as a function of the applied strain is used to estimate the interface toughness.

Influences of surface processes on fold growth during 3-D detachment folding

2014

In order to understand the interactions between surface processes and multilayer folding systems, we here present fully coupled three-dimensional numerical simulations. The mechanical model represents a sedimentary cover with internal weak layers, detached over a much weaker basal layer representing salt or evaporites. Applying compression in one direction results in a series of three-dimensional buckle folds, of which the topographic expression consists of anticlines and synclines. This topography is modified through time by mass redistribution, which is achieved by a combination of fluvial and hillslope erosion, as well as deposition, and which can in return influence the subsequent defor…

Landelinus, l’auteur de la plaque-boucle mérovingienne au Christ de l’Apocalypse découverte à Ladoix-Serrigny (Côte-d’Or) serait-il saint Landeli…

2021

Cette note concerne l’exceptionnelle plaque-boucle au Christ cavalier de l’Apocalypse découverte à Ladoix-Serrigny et étudiée précédemment dans cette revue. Son objectif est de discuter l’hypothèse récemment émise selon laquelle saint Landelin, qui a vécu au VIIe siècle dans le nord de la Gaule, serait Landelinus, l’auteur de cet objet. Plusieurs arguments militent en faveur de cette interprétation qui nous paraît donc plausible, même si elle reste fragile. Il est également envisagé de localiser cette fabrication dans le prestigieux monastère de Luxeuil. Mais il s’agit là encore d’une hypothèse. This note concerns the exceptional buckle-plate to the Christ cavalier of the Apocalypse discove…