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Статті в журналах з теми "Essais de corrosion accélérée"
Massinon, D. "État des connaissances sur les essais de corrosion accélérés utilisés dans l'industrie automobile." Revue de Métallurgie 86, no. 6 (June 1989): 513–22. http://dx.doi.org/10.1051/metal/198986060513.
Повний текст джерелаNguyen, Quang Thanh, Sabine Caré, Alain Millard, and Yves Berthaud. "Analyse de la fissuration du béton armé en corrosion accélérée." Comptes Rendus Mécanique 335, no. 2 (February 2007): 99–104. http://dx.doi.org/10.1016/j.crme.2007.01.005.
Повний текст джерелаBéranger, G., C. Cabrillac, and L. Bourdeau. "Avant-propos : Les essais de corrosion." Revue de Métallurgie 99, no. 9 (September 2002): 687–88. http://dx.doi.org/10.1051/metal/20020902.
Повний текст джерелаLépingle, Viviane. "Les essais de corrosion en atmosphères naturelles." Matériaux & Techniques 88, no. 11-12 (2000): 19–23. http://dx.doi.org/10.1051/mattech/200088110019.
Повний текст джерелаFéron, D., V. L'Hostis, and M. Roy. "Eau de mer synthétique biochimique pour essais de corrosion." Matériaux & Techniques 90, no. 7-8 (2002): 43–48. http://dx.doi.org/10.1051/mattech/200290070043.
Повний текст джерелаWoo, Ik, Jean-Alain Fleurisson, Yoen-Jun Park, Kong-Chang Han, Won-Kyung Song, Hyuck-Jin Park, and Il-Soo Kim. "Essais d’altération chimique accélérée au laboratoire par le double extracteur Soxhlet. Application à des roches granitiques de Corée du Sud." Bulletin of Engineering Geology and the Environment 67, no. 3 (April 17, 2008): 443–52. http://dx.doi.org/10.1007/s10064-008-0140-7.
Повний текст джерелаJean-Michel, Cuntz, Martineau Patrick, and Heuze Jean-Loup. "Les essais de corrosion dans les industries aéronautique, ferroviaire et navale." Matériaux & Techniques 89, no. 5-6 (2001): 5–14. http://dx.doi.org/10.1051/mattech/200189050005.
Повний текст джерелаGrosgogeat, B., and J. Brugirard. "Les essais de corrosion des biomatériaux : leurs usages, leurs limites, leurs fondements." Matériaux & Techniques 89, no. 5-6 (2001): 15–28. http://dx.doi.org/10.1051/mattech/200189050015.
Повний текст джерелаBlat, M., and O. Kerrec. "Etude de l’hydruration d’alliages de zirconium après essais de corrosion hors pile." Revue de Métallurgie 90, no. 9 (September 1993): 1159. http://dx.doi.org/10.1051/metal/199390091159.
Повний текст джерелаHoriot, JC, P. Bontemps, AC Begg, R. Le Fur, W. Van den Bogaert, M. Bolla, T. N'Guyen, et al. "Radiothérapie hyperfractionnée et accélérée dans les cancers de la tête et du cou: résultats des essais de l'EORTC et impact sur la pratique clinique." Bulletin du Cancer/Radiothérapie 83, no. 4 (January 1996): 314–20. http://dx.doi.org/10.1016/s0924-4212(97)86083-5.
Повний текст джерелаДисертації з теми "Essais de corrosion accélérée"
Morel, Jean-Michel. "Rôle de la structuration des patines formées sur acier autopatinable vis-àvis de la résistance à la corrosion atmosphérique : Influence de la diminution des teneurs en SO2 dans les atmosphères post-industrielles." Thesis, La Rochelle, 2022. http://www.theses.fr/2022LAROS015.
Повний текст джерелаThe aim of this work was to determine the extent to which the drastic reduction in SO2 levels in postindustrial atmospheres affected the corrosion kinetics of weathering steels as well as their morphology, chemical composition and crystallographic structure. The experiments covered a wide spectrum of steel grades, exposure time and conditions of formation of these patinas. The structuring of the patinas has been studied with in particular the implementation of cryogenic fractography as well as the kinetics corrosion monitoring. Corrosion products formed on weathering steels or on conventional steels have a similar structuration consisting of a layer of laminated lepidocrocite over denser and more protective corrosion products, usually goethite. These products extend up to forming a relatively homogeneous protective layer. The analysis of the defects of the patinas suggests a very close relation between their density and the corrosion rate. Alloying elements would then play a role in reducing these defects but the exact mechanisms remain to be established. All these results have led to questioning the parameters of the predictive corrosion resistance model of the ISO 9223 standard because they are not adapted to environments with very low level of SO2. They also made it possible to propose an alternative and on destructive method of monitoring the corrosion’s performance of low-alloy steels, this family encompassing so-called weathering steels
Auger, Fernand. "Altération des roches sous influence marine, dégradation des pierres en oeuvre, simulation accélérée en laboratoire." Poitiers, 1987. http://www.theses.fr/1987POIT2018.
Повний текст джерелаNguyen, Huy Dung. "Tenue à la corrosion en atmosphères naturelles et artificielles de revêtements électridéposés à base de zinc." Lille 1, 2005. https://pepite-depot.univ-lille.fr/RESTREINT/Th_Num/2005/50376-2005-140.pdf.
Повний текст джерелаRiou, Véronique. "Etude et mise au point de procédures d'essais accélérés de corrosion atmosphérique : application aux revêtements zingués et zingués chromatés." Montpellier 2, 1994. http://www.theses.fr/1994MON20180.
Повний текст джерелаProvete, Vincler Juliano. "Effet de la migration accélérée du chlore sur la durabilité des BFUP." Master's thesis, Université Laval, 2019. http://hdl.handle.net/20.500.11794/33490.
Повний текст джерелаUltra-high-performance fiber reinforced concrete (UHPFRC) is exceptionally durable. Accelerated migration tests are commonly applied to measure the chloride diffusion. This test is applied with difficulty to cementitious composites because their very low permeability, or not at all when these composites such as UHPCs contain metallic fibers. In order to improve its durability in the structural application, there is now a critical need to accurately assess the level of permeability, so that companies gain confidence in using this emerging material on the market. Chloride profiles and relatively low chloride diffusion coefficients Dcl were found for the UHPFRC with organic and metallic fibers. However, some samples with metallic fibers showed corrosion and cracking before the end of the accelerated migration test.
TEBBI, Ouahiba. "ESTIMATION DES LOIS DE FIABILITE EN MECANIQUE PAR LES ESSAIS ACCELERES." Phd thesis, Université d'Angers, 2005. http://tel.archives-ouvertes.fr/tel-00009407.
Повний текст джерелаEnsuite, nous présentons essentiellement les méthodes d'estimation de la fiabilité par les essais dans le cycle de développement d'un produit. Différentes catégories d'essais interviennent dans les études conceptuelles, les programmes de développement et les processus de fabrication. Nous montrons que les essais accélérés sont les plus courts avec un avantage certain économiquement.
La dernière partie, est consacrée à l'étude des méthodes d'essais accélérés et leurs applications en mécanique. En particulier, nous considérons l'application des modèles standards de vie accélérée (SVA) à des composants soumis au dommage par fatigue, en menant des analyses théoriques, par simulation et expérimentales. Pour cela, nous avons développé un modèle d'essai de fatigue à partir des modèles d'endommagement par fatigue, ce modèle a été validé par des outils de simulation. Ensuite nous avons appliqué les modèles SVA selon deux types de plans d'expériences, un plan d'essai par régression et un deuxième avec endommagement préalable accéléré. Des approches paramétrique, semi-paramétrique et non paramétrique sont utilisées pour estimer les paramètres des modèles en question.
Cette étude a permis d'estimer la fiabilité des systèmes soumis à des dégradations mécaniques, dans les conditions normales d'utilisation et pour la première fois de démontrer l'applicabilité des modèles SVA avec des données réelles des plans d'expériences dans le domaine de la mécanique.
Pineau, Samuel. "Interactions entre les communautés bactériennes et les processus de corrosion accélérée des structures métalliques en environnement marin." Compiègne, 2006. http://www.theses.fr/2006COMP1664.
Повний текст джерелаAccelerated corrosion phenomenons are studied from an in situ experimentation conducted in several ports using metallographic, chemical, microbiological and molecular biology analytical methods. The results showed some variations of corrosion deposit composition according to immersion zones, including high bacterial diversity. The habitat and mixed populations notions have been proposed. The observation of "terrace-like" corrosion suggested repetitive desquamations of deposits even when a hypothesis of localised acidification is proposed for attacks processes under tubercles. This process could be induced by biogenic sulphides oxidation, microbial synergetic relationships and corrosion products structure. Many applied research outlooks are suggested, especially for the methodological development of survey, diagnostic and risk assessment processes in industrial domain
Vervisch-Fortuné, Isabelle. "Sensibilité de la technique d'émission acoustique à la corrosion des armatures dans le béton." Toulouse 3, 2009. http://thesesups.ups-tlse.fr/666/.
Повний текст джерелаCorrosion of reinforcement is a major cause of concrete deterioration. The two most common mechanisms contributing to the development of corrosion are penetration of chlorides and carbonation of cover concrete. These two mechanisms induce two types of corrosion, pitting and generalised corrosion. One of the non destructive techniques used in Civil Engineering, acoustic emission, extends to monitor the corrosion of prestressing cables and metal structures. The objective of this thesis is firstly to define an accelerated corrosion test able to provide conditions close to natural corrosion and secondly to check the sensitivity of acoustic emission for detecting the effect of early corrosion in reinforced concrete. Usual electrochemical methods are used to validate the results obtained by acoustic emission. These methods, potential of corrosion measure and corrosion rate measurement being RILEM recommendations, remain intrusive methods requiring access to the rebar. From a literature review, various tests were studied, first using high impressed corrosion currents and then by decreasing gradually the current to values existing in structures. Different conditions for initiating corrosion, as an attack by chlorides and carbonation of cover concrete, were also tested. This enables the development of an accelerated corrosion test with densities of corrosion current close to the natural ones. It's about creating a macro-cell by connecting both two rebars in the same concrete, one of the rebar being depassivated by carbonation of concrete, the second remaining in a passive state. Different galvanic currents are obtained with different anodic and cathodic surfaces and distances between electrodes. .
Dupuis, Jennifer. "Investigation d’alliages à base de titane de types béta-métastables pour applications marines : cas particulier d’un winch innovant." Thesis, Rennes, INSA, 2014. http://www.theses.fr/2014ISAR0028/document.
Повний текст джерелаTitanium alloys are used in numerous fields as aerospace industry, automotive industry, off-shore industry, and, in several applications such as medical and marine applications. This is due to their good properties like high mechanical strength, low density and excellent corrosion resistance. In order to be used for an innovating winch and so in a marine environment, we have chosen to study three β-metastable titanium alloys which are Ti-6.8Mo-4.5Fe-1.5Al, Ti-15Mo-2.7Nb-3Al-0.2Si and Ti-5Al-5Mo-5V-3Cr. In marine environment, materials are exposed to tough conditions which can generate their destruction. Several modes of degradation exist. It is so interesting to evaluate the corrosion resistance of these alloys and to search their best corrosion protection. So, the heart of the study is to select titanium alloys to meet the specifications of the innovating winch. At first, we defined thermomechanical treatments for those titanium alloys and then these materials were characterized to know their mechanical and metallurgical properties. These tests allowed us to have a well knowledge of mechanical properties of these alloys and to choose which alloys can be employed in a winch. Then, galvanic corrosion tests were made in nitric acid, sodium chloride and sodium hydroxide. We measured potential differences between our treated titanium alloys and other materials which may be used in a winch such as stainless steels, aluminum alloys and leaded brass. Then, in order to evaluate the behavior of the passive film in marine environment of titanium alloys, electrochemical corrosion tests were conducted using a three-electrode method in sodium chloride and natural seawater electrolytes. So, free potential and cyclic voltammetry measurements were conducted. The flaw of titanium alloys is their low friction coefficient. So in order to improve the coefficient of friction of titanium alloys it is useful to do a surface treatment. In this study, a gaseous nitriding thermochemical treatment was done for the most recent developed alloy among the three studied nuances, which is Ti-5Al-5Mo-5V-3Cr. Then this treated alloy was characterized too similarly to the three thermomechanical treated titanium alloys. All of tests we led allowed us to know which titanium alloys with which thermomechanical and surface treatments may be used for the innovating winch
Lopez, Nathalie. "Mise en évidence par les essais EPR de la sensibilité à la corrosion intergranulaire et à la corrosion sous contrainte des aciers austéno-ferritiques." Bordeaux 1, 1997. http://www.theses.fr/1997BOR10529.
Повний текст джерелаКниги з теми "Essais de corrosion accélérée"
BLANC. Couplage Mecanique: Microstructure, Corrosion, Concepts, Essais Modelisation et Cas Concrets. ISTE Editions Ltd., 2018.
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