Relevant bibliographies by topics / Propagation de fissure

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Propagation de fissure'

Author: Grafiati
Published: 4 June 2021
Last updated: 20 July 2024

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Journal articles on the topic "Propagation de fissure"

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Fan, Pingyang, Jianxin Liu, Wengui Zuo, Min Wang, and Daoyong Zhang. "Experimental Study of Rock-like Materials with Two Unequal Parallel Preexisting Fissures under Uniaxial Compression." Applied Sciences 12, no. 20 (2022): 10404. http://dx.doi.org/10.3390/app122010404.

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Fissures substantially impact the engineering stability of rock masses, making research on rock masses with preexisting fissures essential for engineering activities. The development of specimens with different preexisting fissure types was examined in this study. Three different types of specimens with preexisting fissures can be broadly categorized: specimens with few preexisting fissures, specimens with multiple preexisting fissures, and specimens with preexisting fissures and other flaws. Uniaxial compression tests of specimens with preexisting fissures of two unequal lengths were conducte
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Xu, Nai-Zhong, Chang-Qing Liu, You-Jian Wang, and Hong-Bin Dang. "Biaxial Shear Crack Propagation Modes of Rock-Like Specimens with Prefabricated Fissures and Their Strength Characteristics." Shock and Vibration 2021 (August 2, 2021): 1–12. http://dx.doi.org/10.1155/2021/7248926.

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A biaxial shear test is performed on prefabricated, single-fissure type, cubic rock-like specimens by using the TZW-500 rock direct shear apparatus to study the shear strength characteristics, crack coalescence, and propagation modes of the specimens with different geometric parameters. Results show that the crack coalescence and propagation modes of the rock-like specimens with prefabricated fissures can be divided into four types, namely, single main shear crack coalescence mode, main shear crack coalescence and secondary tensile-shear crack propagation mode, main shear crack coalescence and
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Liu, Cong, Li Wei Chen, Yan Qiu Leng, and Jian Wei Qiao. "Numerical Simulation Analysis of Buried Ground Fissures’ Propagation in Xi’an." Applied Mechanics and Materials 170-173 (May 2012): 1218–25. http://dx.doi.org/10.4028/www.scientific.net/amm.170-173.1218.

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Ground fissure disasters are main environmental geological hazards in Xi’an. Therefore, carrying out researches on causes of cracks and mechanisms of hazard-formative, as well as setting economical and effectively countermeasures are major geological disaster puzzles to be solved.According to the key issues existing in the ground fissure researches, we use numerical simulation analysis method to solve them. Numerical simulation analysis shows that, it is reasonable that we use elastic breaking theory to describe its rupture propagation process. This paper introduces smeared crack model and exp
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Rashidi, Ahmad, Mohammad Mahdi Khatib, and Reza Derakhshani. "Structural Characteristics and Formation Mechanism of the Earth Fissures as a Geohazard in Birjand, Iran." Applied Sciences 12, no. 9 (2022): 4144. http://dx.doi.org/10.3390/app12094144.

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Earth fissure structures are a common type of geohazard associated with geotechnical surface ruptures that can occur almost anywhere on the ground surface due to a variety of different mechanisms, and in most cases, these hazardous cracks have resulted in severe damage to infrastructure. Investigation of the structural characteristics of fissures in an active tectonic area (such as Birjand in eastern Iran) can improve our understanding of connections between the fissures and structural geology. The first reported earth fissures in NW Birjand are distributed along the North Birjand fault. Field
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Chen, Wei, Wen Wan, Yanlin Zhao, and Wenqing Peng. "Experimental Study of the Crack Predominance of Rock-Like Material Containing Parallel Double Fissures under Uniaxial Compression." Sustainability 12, no. 12 (2020): 5188. http://dx.doi.org/10.3390/su12125188.

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Fractured rock mass is a relatively complex medium in nature. It plays a key role in various projects, such as geotechnical engineering, mining engineering and tunnel engineering. Especially, the interaction between fissures has a practical function in the guidance of safe production. This paper takes its research object as rock-like material which contains prefabricated parallel double fissures. It studies how the fissures’ length difference and spacing influence the failure of specimens under uniaxial compression, and analyzes them with fracture mechanics theory. The results include two aspe
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Chen, Miao, Shengqi Yang, Ranjith Pathegama Gamage, et al. "Fracture Processes of Rock-Like Specimens Containing Nonpersistent Fissures under Uniaxial Compression." Energies 12, no. 1 (2018): 79. http://dx.doi.org/10.3390/en12010079.

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Many rock engineering accidents have proven that the coalescence of discontinuities in surrounding rock can have a major impact on the security and stable operation of energy infrastructure. To give an insight into the understanding of the crack propagation and coalescence in fissured rock masses, a series of uniaxial compression experiments were conducted on rock-like specimens containing nonpersistent fissures. The digital speckle correlation method (DSCM) and the acoustic emission (AE) monitoring system were adopted to capture the real-time strain field on the specimens’ surfaces and microf
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Zhang, Jie, Yifeng He, Tao Yang, Wenyong Bai, Shoushi Gao, and Yihui Yan. "Study on the Co-Evolution Mechanism of Key Strata and Mining Fissure in Shallow Coal Seam Mining." Applied Sciences 13, no. 14 (2023): 8036. http://dx.doi.org/10.3390/app13148036.

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Shallow coal seam mining makes the evolution form of mining fissures in rock and soil layers diversified, which leads to the easy penetration of mining fissures as the main channel of water, sand inrush, and air leakage. In order to reveal the co-evolution mechanism of broken rock beam structure and mining fissures in key strata, taking Hanjiawan Coal Mine as the research background, the relationship between mining fissures and rock beam structure, fissure activation period, propagation characteristics, and connectivity of working face was studied by means of field observation, physical simila
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Rhazi, Jamal, and Gérard Ballivy. "Suivi de l'injection au moyen de l'émission acoustique." Canadian Geotechnical Journal 30, no. 6 (1993): 965–73. http://dx.doi.org/10.1139/t93-094.

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The injection of grout in the microfissures of concrete dams in operation is very tricky because of the high pressures required to penetrate the slightly opened fissures. These conditions of grouting may result in the propagation of the fissures and contribute to the loss of stability of the mass. The technique using acoustical emission to follow the injection in real time has been evaluated. Water injection tests have been carried out on large dimensions (2.64 m × 1.42 m × 0.40 m) fissured concrete slabs instrumented with pressure, load, and displacement transducers. According to a study comp
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Gou, Hong, Peng Shi, Zhijun Wan, Luchang Xiong, Bowen Fan, and Zheng Zhen. "Numerical Analysis of Perforated Symmetric Fissures on Mechanical Properties of Hole-Containing Sandstone." Applied Sciences 13, no. 15 (2023): 8780. http://dx.doi.org/10.3390/app13158780.

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The symmetrical fissures located within the surrounding rock of the roadway (borehole) in tunnel engineering activities can easily induce damage and instability of the surrounding rock. Therefore, studying the impact of perforated symmetrical fissures on the mechanical properties of rock with a hole has significant practical significance. Based on indoor experimental results, conventional triaxial compression simulations were performed on symmetrical fissure-hole sandstone using PFC2D. The impact of the dip angle and length of symmetric fissures on the mechanical properties of the hole-contain
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Tang, Peng, Guoqing Chen, and Siqing Qin. "Insight into the Evolutionary Mechanism of the Rear Fissure of Landslides That Conform to the Three-Section Mechanism." Sustainability 16, no. 1 (2023): 17. http://dx.doi.org/10.3390/su16010017.

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In landslides that conform to the three-section mechanism, the rear fissure is the essential component of the potential sliding surface. Hence, the evolutionary mechanism behind that is important for reducing the risk of such landslides. In this research, the evolutionary features and processes were analyzed through a case of landslides that conform to the three-section mechanism; then, base friction testing was carried out to explore the evolutionary mechanism of the rear fissure. On the reliability–validation basis of the consistency of outside deformation features between the testing model
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Dissertations / Theses on the topic "Propagation de fissure"

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Carin, Yann. "Modélisation de la propagation dynamique de fissure." Marne-la-vallée, ENPC, 2000. http://www.theses.fr/2000ENPC0015.

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Nous proposons des méthodes d'analyse afin de caractériser les matériaux vis a vis de la propagation dynamique de fissure en rupture fragile. Ainsi, nous avons développe un modèle unidimensionnel pour déterminer les premières conditions favorables ou défavorables a la propagation. Puis une méthode hybride a été mise au point permettant de rechercher des critères. Elle associe une simulation numérique bidimensionnelle et un dispositif expérimental. Son application au pmma a mis en évidence les effets de la structure et de la vitesse de la fissure sur la réponse. L'approche unidimensionnelle con
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Merhy, Elias. "Propagation de fissure sous chargement thermomécanique cyclique anisotherme." Phd thesis, Ecole Polytechnique X, 2011. http://pastel.archives-ouvertes.fr/pastel-00658854.

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Le but du travail est de trouver, dans le domaine de fatigue oligocyclique, une loi de propagation de fissure sous un chargement thermomécanique anisotherme. La loi trouvée permet ainsi d'avoir un dimensionnement optimal des culasses des moteurs HDI PSA dont le matériau constitutif est l'AS7G03 "dopé" cuivre. Le travail réalisé durant les trois années de thèse se résume par les cinq étapes suivantes : - Etude bibliographique : sur la microstructure des alliages d'aluminium, les critères de fatigue et les lois de propagation de fissure. - Calcul numérique de structure : Des calculs des champs t
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MARTIN, BORRET GUY. "Sur la propagation de fissure dans les caoutchoucs synthetiques." Palaiseau, Ecole polytechnique, 1998. http://www.theses.fr/1998EPXX0075.

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Les caoutchoucs synthetiques renforces par des charges de noir de carbone sont parfois le siege de deviations de fissure spectaculaires appelees rotation de fissure. Les fortes non-linearites de ces materiaux - grandes deformations et visco-elasticite non-lineaire - ont longtemps fait obstacle aux etudes theoriques sur le sujet. Ce travail propose des elements d'analyse nouveaux pour aborder les phenomenes de propagation et de rotation. Nous presentons d'abord une modelisation du comportement des elastomeres adaptee a notre etude. Puis nous decrivons quelques aspects theoriques de la propagati
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Lefrancois, André. "Propagation par fatigue de fissures bi et tridimensionnelles dans deux alliages d'aluminium : effets de petite fissure et de chargements aleatoires." Paris, ENMP, 1987. http://www.theses.fr/1987ENMP0089.

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Comparaison du comportement des fissures courtes (inferieures a 0,3-0,4mm) et longues dans deux alliages d'aluminium 2124 et 7475 soumis a deux types de chargement : sollicitations d'amplitude constante, sollicitations incluant des surcharges uniques ou repetees periodiquement
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Soumahoro, Zoumana. "Etude du couplage thermomécanique dans la propagation dynamique de fissure." Phd thesis, Ecole Polytechnique X, 2005. http://pastel.archives-ouvertes.fr/pastel-00001627.

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L'objectif de ce travail est d'étudier le couplage thermomécanique dans les mécanismes de rupture dynamique notamment dans la loi de comportement. Le problème de propagation de fissure est étudié dans le cadre de la thermodynamique classique. Les conséquences du premier et second principe sont déduites, en particulier, il est montré que la pointe de fissure se comporte comme une source mobile. Les singularités puis les régularités de température sont discutées. En élastodynamique, l'expression asymptotique de la solution couplée est donnée en élasticité et conduction linéaire. En plasticité dy
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Cerveny, Radim. "Etude de la propagation des fissures de fatigue dans l'alliage d'aluminium 7010-T7651 : fermeture et influence de la microstructure et de la géométrie des éprouvettes." Châtenay-Malabry, Ecole centrale de Paris, 1994. http://www.theses.fr/1994ECAP0368.

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La propagation des fissures de fatigue dans l'alliage d'aluminium 7010-T7651 est observée localement en plusieurs endroits le long de l'épaisseur d'une éprouvette CT en utilisant différentes méthodes expérimentales. La partie centrale, non accessible pour les méthodes classiques, est observée grâce à une nouvelle méthode ultrasonore appelée MU3F, basée sur la diffraction d'un faisceau ultrasonore focalise sur le front de fissure. Une attention particulière a été consacrée au phénomène de fermeture. La fermeture est mesurée globalement par la méthode de complaisance et localement par l'appareil
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Edeline, Gwenaël. "Méthode énergétique de simulation de propagation de fissure et contraintes résiduelles." Palaiseau, Ecole polytechnique, 2015. http://www.theses.fr/2015EPXX0060.

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Polvora, Jean-Paul. "Propagation de fissure à haute température dans un acier inoxydable austénitique." ENSMP, 1998. http://www.theses.fr/1998ENMP0799.

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Cette étude porte sur la propagation de fissure à 650°c dans un acier inoxydable austénitique de nuance z2 cnd 17-12. Elle est basée sur travail un expérimental (37 essais) qui concerne, tout d'abord, des éprouvettes de type ct sollicitées à 650°c en fatigue, fluage, fatigue-fluage en force imposée. Ensuite, des tubes fissures avec entaille circonférentielle interne sollicités en flexion 4 points à déplacement imposé. En utilisant les outils de la mécanique de la rupture (paramètres k, j et c*) et dans le cadre d'une approche globale de la propagation, il s'agit ici de rechercher une méthodolo
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COURONEAU, MORTREUIL NICOLAS. "Propagation par fatigue d'une fissure dans un fil constitutif d'un cable." Nantes, 1998. http://www.theses.fr/1998NANT2036.

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L'objectif est de developper un outil permettant de concevoir et d'evaluer la duree de vie d'un cable mono-toron. Ce type de cable, d'utilisation frequente en genie civil, peut etre soumis a la combinaison d'un chargement axial statique et de sollicitations repetees de traction ou de flexion. La premiere etape est de decrire l'evolution des degradations conduisant a la rupture par fatigue du cable. Les surfaces de contact entre fils apparaissent comme le lieu d'une competition entre divers mecanismes dont principalement la fissuration, l'usure et la corrosion. Une fois amorcee, la fissure de f
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Amestoy, Michel. "Propagation de fissures en elasticite plane." Paris 6, 1987. http://www.theses.fr/1987PA066238.

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Ce travail est consacre a une analyse theorique en vue de modeliser le phenomene de propagation de fissures dans un milieu suppose elastique, lineaire, homogene, isotrope (sans forces de masse), en etat de deformation plane. Dans ce cadre d'hypotheses, la situation la plus generale est envisagee (arbitraire sur la geometrie initiale du corps et de la fissure; arbitraire sur le chargement). Une telle entreprise necessite la formulation du critere de propagation, appele a porter sur des quantites convenablement identifiees et l'on peut anticiper que ces quantites representatives seront les facte
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Book chapters on the topic "Propagation de fissure"

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Li, Sheng, and Chen Yang. "Study on the Fissure Propagation of Jointed Rock Slope Under Unloading Condition." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-5217-3_88.

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Beskos, D. E., and I. Vgenopoulou. "Wave propagation in saturated, fissured, poroelastic rocks." In Structural Dynamics. Routledge, 2022. http://dx.doi.org/10.1201/9780203738085-39.

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Wang, Y. L., D. S. Liu, K. Li, D. Chen, and X. M. Hu. "Mechanical Characteristics and Failure Modes of Low-Strength Rock Samples with Dissimilar Fissure Numbers." In Advances in Transdisciplinary Engineering. IOS Press, 2021. http://dx.doi.org/10.3233/atde210317.

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The mechanical characteristics and failure modes of low-strength rock sample with various crack dip angles and numbers were investigated by conventional uniaxial compression test and three-dimensional (3D) crack reconstruction. The results indicated that compared with high-strength rock masses, cracks had different influences on the low-strength rock mass mechanical deformation features. Thereinto, the number of fissures can cause post-peak failure stage of stress-strain curve change from swift decline to multi-step down and horizontally extended decline, respectively, showing obvious ductility and ductile-flow deformation and failure characteristics. Due to the structural effect, only under the condition of fissure α < 90°, the modulus of peak strength and elastic modulus lowered with the enhancement of fissure number and had a negative correlation. As the number of fissures increased, the axial peak strain increased first and then decreased, demonstrating a reversed V-shaped change trend. Fissure number can fully affect the crack propagation law only in the case of vertical fissures. The above research findings can complement and improve the study of fissured rock masses.
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MOËS, Nicolas. "Méthodes des éléments finis étendus (XFEM) et des level sets épaisses (TLS)." In Modélisation numérique en mécanique fortement non linéaire. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9081.ch6.

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La méthode des éléments finis étendus (XFEM) permet de gérer la propagation de fissures sans remaillage par l'insertion de sauts de déplacement. Le chemin de la fissure peut être calculé soit par une approche énergétique (facteurs d'intensité de contrainte) soit via la méthode des level sets épaisses qui a l'avantage de gérer la naissance de fissure ainsi que des chemins complexes de fissuration.
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FAVIER, Véronique, André GALTIER, Rémi MUNIER, and Bastien WEBER. "Compromis entre résistance mécanique et tenue en fatigue." In Le développement des aciers à très haute résistance. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9122.ch4.

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Ce chapitre rappelle les principales caractéristiques de la tenue en fatigue, essentielle pour la plupart des pièces de structure en acier. Il aborde ensuite l’influence des nouvelles microstructures sur l’amorçage et la propagation des fissures, ainsi que les moyens d’améliorer la tenue en fatigue par des traitements thermiques et mécaniques adaptés à ces nouvelles nuances d’acier.
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"Crack propagation and threshold strength of fissured clays subjected to cyclic loading." In Advances in Unsaturated Soils. CRC Press, 2013. http://dx.doi.org/10.1201/b14393-58.

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Conference papers on the topic "Propagation de fissure"

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Lu, Y. Michael, Vasanti M. Gharpuray, and William C. Hutton. "The Effect of Posture, Loading Rate, and Diurnal Fluid Changes on the Propensity to Disc Prolapse." In ASME 1996 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/imece1996-1159.

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Abstract Sudden disc prolapse usually occurs due to a traumatic event when a high compressive force is suddenly applied to the spine in an unfavorable condition. Previous experimental studies have shown that disc prolapse is more likely to occur in normal or slightly degenerated discs, and that for prolapse to occur, the applied load must be a combination of forces (e.g., forward bending and axial compression) (Adams et al. 1982, 1985; Gordon et al. 1991). By definition, for a disc to prolapse it must have a fissure or channel for the passage of nuclear material (Brinckmann et al. 1994). Altho
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Shin, Ho-Sang, Jin-Ki Hong, Koo-Kab Chung, Hae-Dong Chung, Gwang-Yil Kim, and Sung-Woo Cho. "Effects of Delta - Ferrite Content on the Integrity of Reactor Vessel Cladding." In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-25434.

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As the design life of new nuclear power plant increases, the austenitic stainless cladding integrity of reactor vessel becomes one of the new concerns. Since 1970’s, there have been some specific recommendations on delta ferrite content of austenitic cladding of reactor vessels and welds. It has been known that the delta ferrite is beneficial for reducing micro-fissure in welds, though the high delta ferrite content increases the probability of embrittlment of welds. In this study, the mechanical and microstructural properties of austenitic weld metals with the limit values of the recommended
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Hénaff, G., and F. Menan. "Influence de l'environnement sur la propagation des fissures de fatigue." In PlastOx 2007 - Mécanismes et Mécanique des Interactions Plasticité - Environnement. EDP Sciences, 2009. http://dx.doi.org/10.1051/ptox/2009017.

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Schroeder, Y., S. Sivan, W. Wilson, J. M. Huyghe, A. Maroudas, and F. P. T. Baaijens. "Intra- and Extrafibrillar Fluid Exchange in the Disc." In ASME 2007 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2007. http://dx.doi.org/10.1115/sbc2007-176329.

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The mechanical properties of the intervertebral disc are regulated by its biochemical composition. With ageing and degeneration the water content of the disc decreases which highly influences the mechanical properties. The disc is subjected to a combination of elastic, viscous and osmotic forces. Osmotic forces are shown to have a major impact on crack opening and propagation [1] and on cellular responses [2]. In particular, osmosis provides an understanding on why fissures in the degenerating disc are so poorly related to external mechanical load [3].
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Davis, Bradley J., Guillaume Michal, Cheng Lu, and Valerie Linton. "Separation Characteristics of an X65 Linepipe Steel From Laboratory-Scale to Full-Scale Fracture Tests." In 2020 13th International Pipeline Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/ipc2020-9545.

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Abstract Separations are small fissures that form along the rolling-plane of some steels when sufficient stresses are created to open planes of weakness in the material. In the pipeline industry, separations have been observed on the fracture surfaces of tensile, Charpy, and drop-weight tear tests — the key tests for determining the fracture arrest capabilities of line pipe steels. When compared, the separation appearance between lab-scale tests and full-scale fracture test are noticeably dissimilar. Therefore, the influence separations have on the fracture behaviour may not clearly scale betw
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Ma, Kunfeng, and Po Hu. "Study of Breeding Performance in a Heat Pipe Cooled Traveling Wave Reactor With Th and U Fuels." In 2022 29th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/icone29-93399.

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Abstract Heat pipe cooled traveling wave reactor (HPTWR) is a newly proposed heat pipe reactor. The HPTWR can achieve the low enrichment of loaded fuel, high power density, and long-term continuous operation for the power supply of decentralized electricity markets. Due to the excellent breeding capability of the HPTWR, the Th fuel is also added into the breeding fuel region of the reactor to achieve the Th-U fuel cycle in this work. The Monte Carlo code RMC is used to obtain the reactivity swing, propagation of axial power peak, burnup and the productions of bred fissile nuclides for the HPTW
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Hamidov, Elmir, Evren Ozbayoglu, and Silvio Baldino. "Experimental Study on Wellbore Strengthening with Fine Particles." In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0381.

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ABSTRACT One of the most serious issues that arises during drilling operations is lost circulation. Significant study into wellbore strengthening has been conducted over several years in the attempt to improve the fracture gradient and reduce losses. Three ways to wellbore strengthening have been presented in general: 1) Increased fracture plug/hoop stress or "stress cage," 2) particle "screen-out," and 3) fracture propagation resistance. All these options are designed to prevent the spread of the fracture once it has begun. Filter-cake has been identified as having a significant role in wellb
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Zhao, Gaobo, Mindi Ruan, Ihsan Berk Tulu, Xin Li, and Yuting Xue. "Reconstruct Laminated Shale Cores/specimens for Numerical Modeling by Physics-Informed Image Processing." In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0732.

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ABSTRACT This paper proposes end-to-end physics-informed image processing to construct the digital twin of laminated shale cores/specimens and extract the number, spacing, length, and frequency of bedding planes. Specifically, the image stitching technique was applied to eliminate any distortion that may arise from projecting 3D objects onto 2D images. Then, based on shale physics information (gradient difference between different pixels in the image due to various mineral components), an edge detection algorithm was used to extract one-pixel-wide bedding planes from the shale image. Furthermo
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French, S. M. "Failure Analysis of a Ruptured Final Reheat Tube." In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26360.

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Two damaged final reheat tubes from a 30 year old supercritical unit were submitted to the laboratory for evaluation following the discovering of a failure of one of the tubes after deslagging operations; a third, dented tube was left in service. The 304H stainless steel tubes were installed in 1990 when the reheater was replaced. The bulk microstructure of both tubes shows evidence of sensitization, which is not unusual given this application (reheater). The failed tube appears to be an intergranular separation that started either subsurface or at the ID, propagating to the OD surface. The se
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