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Institution

ParisTech

EducationParis, France
About: ParisTech is a education organization based out in Paris, France. It is known for research contribution in the topics: Residual stress & Finite element method. The organization has 1888 authors who have published 1965 publications receiving 55532 citations. The organization is also known as: Paris Institute of Technology & ParisTech Développement.


Papers
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Journal ArticleDOI
TL;DR: In this paper, the authors analyzed the mechanical behavior and failure mechanisms of three polymer-metal configurations: lap, T and Arcan joint configurations, where the metal was locally structured by pulsed laser radiation producing micro-patterns to improve adhesion of the polymeric part.

10 citations

Journal ArticleDOI
André Torre1
01 Jul 2014
TL;DR: In this article, the authors present les contextes agricole et agro-alimentaire de la region Ile-de-France and propose enfin une analyse des evolutions du foncier agricole francilien a partir de l'etude des conflits dusage.
Abstract: Alors que la notion de nature s’impose dans les agendas des politiques et les revendications des habitants des villes, se manifeste depuis quelques annees un retour de l’interet pour la question agricole dans et a proximite de la cite. L’emergence de nouvelles formes d’organisation, souvent innovantes, reinterroge la place de l’agriculture ainsi que l’avenir de la profession agricole. L’objectif de cet article est de faire le point sur les enjeux actuels de l’agriculture de proximite et, a travers l’analyse des conflits d’usage du sol, d’apporter un point de vue sur sa faisabilite et sa pertinence en zones periurbaines. Nous commencons par traiter de la question de l’agriculture de proximite et de ses enjeux. Puis nous presentons les contextes agricole et agro-alimentaire de la region Ile-de-France et la problematique pregnante du foncier. Nous proposons enfin une analyse des evolutions du foncier agricole francilien a partir de l’etude des conflits d’usage. Nous montrons que la conflictualite des espaces proches de la ville n’est pas liee a l’activite agricole elle-meme, mais aux usages et anticipations de reconversion des terres agricoles.

10 citations

Journal ArticleDOI
TL;DR: In this paper, two different superalloys are studied: a first-generation one and a fourthgeneration one containing Re, Ru and Hf, and the main results of this work are shown that the MCNG-based system is significantly more resistant to spallation than the AM1-based one.
Abstract: This study deals with the cyclic oxidation behaviour of thermal barrier coating systems. The systems consist of an yttria-stabilised zircona ceramic top coat deposited by EB-PVD, a β-(Ni,Pt)Al bond coat and a Ni-based superalloy. Two different superalloys are studied: a first-generation one and a fourthgeneration one containing Re, Ru and Hf. The aim of this work is to characterise the microstructural evolution of those systems and to correlate it to their resistance to spallation. Thermal cycling is carried out at 1100°C in laboratory air, with the number of cycles ranging between 10 and 1000. Each cycle consists of a 1 h dwell followed by forced-air cooling for 15 min down to room temperature. Among the main results of this work, it is shown that the MCNG-based system is significantly more resistant to spallation than the AM1-based one. Up to 50 cycles, both systems exhibit similar oxidation rate and phase transformations but major differences are observed after long-term ageing. In particular, ...

10 citations

Journal ArticleDOI
TL;DR: In this article, a single-edge wedge specimen of the SiMo cast iron was used to simulate the conditions experienced by exhaust manifolds during operation and the leading edge temperature was cycled between 20 and 750 °C and the temperature distribution on the specimen surface was measured by thermocouples.
Abstract: Thermal fatigue experiments have been carried out on a single-edge wedge specimen of the SiMo cast iron to reproduce the conditions experienced by exhaust manifolds during operation. The leading edge temperature was cycled between 20 and 750 °C and the temperature distribution on the specimen surface was measured by thermocouples throughout the thermal cycle. Due to the complexity of the loading and interaction effects between cracks, numerical simulation of crack propagation and shielding effects in multicracked structures appear a useful way to analyze this problem. Therefore, 3D thermo-mechanical computation was performed with the finite element code ABAQUS of both un-cracked and multicracked specimen. This computation allowed us to assess the temperature, stresses and strains distribution over a thermal fatigue specimen and the estimation of the crack growth rate using the energy criteria based on the calculation of the J-integral crack tip.

10 citations

Posted Content
TL;DR: The convergence of the SHUS algorithm is proved, and some similarities of SHUS with the well-tempered metadynamics method Barducci et al. are exhibited.
Abstract: The Self-Healing Umbrella Sampling (SHUS) algorithm is an adaptive biasing algorithm which has been proposed to efficiently sample a multimodal probability measure. We show that this method can be seen as a variant of the well-known Wang-Landau algorithm. Adapting results on the convergence of the Wang-Landau algorithm, we prove the convergence of the SHUS algorithm. We also compare the two methods in terms of efficiency. We finally propose a modification of the SHUS algorithm in order to increase its efficiency, and exhibit some similarities of SHUS with the well-tempered metadynamics method.

10 citations


Authors

Showing all 1899 results

NameH-indexPapersCitations
Mathias Fink11690051759
George G. Malliaras9438228533
Mickael Tanter8558329452
Gerard Mourou8265334147
Catherine Lapierre7922718286
Carlo Adamo7544436092
Jean-François Joanny7229420700
Marie-Paule Lefranc7238121087
Paul B. Rainey7022217930
Vincent Lepetit7026826207
Bernard Asselain6940923648
Michael J. Baker6939420834
Jacques Prost6819819064
Jean-Philippe Vert6723517593
Jacques Mairesse6631020539
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20239
202212
202174
202093
2019127
2018145