Relevant bibliographies by topics / Rupture fatigue

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Rupture fatigue'

Author: Grafiati
Published: 4 June 2021
Last updated: 11 February 2022

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Journal articles on the topic "Rupture fatigue"

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Bank, A. J., A. Versluis, S. M. Dodge, and W. H. Douglas. "Atherosclerotic plaque rupture: a fatigue process?" Medical Hypotheses 55, no. 6 (December 2000): 480–84. http://dx.doi.org/10.1054/mehy.2000.1096.

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Wang, X. T., and R. F. Ker. "Creep and fatigue rupture of tendons." Journal of Biomechanics 27, no. 6 (January 1994): 853. http://dx.doi.org/10.1016/0021-9290(94)91481-8.

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Wang, X. T., R. F. Ker, and R. M. Alexander. "Fatigue rupture of wallaby tail tendons." Journal of Experimental Biology 198, no. 3 (March 1, 1995): 847–52. http://dx.doi.org/10.1242/jeb.198.3.847.

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Wallaby tail tendons fail after repeated application of stresses much lower than would be needed to break them in a single pull. We show that this a fatigue phenomenon, distinct from the creep rupture that occurs after prolonged application of a constant stress. The two phenomena are disctinguished by experiments in which tensile stress is cycled at different frequencies, ranging from 1 to 50 Hz.
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Liu, Ruofan, and Erol Sancaktar. "Fatigue-induced dual stiffness behavior of filled styrene–butadiene rubber." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 233, no. 10 (November 4, 2018): 2006–14. http://dx.doi.org/10.1177/1464420718809502.

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Payne and Mullins effects are widely observed in reinforced rubber materials. The mechanisms by which these two effects work are not fully understood. Several models have been proposed, including molecular slippage model, bond rupture model, and filler rupture model. In this study, two different compounds of styrene–butadiene rubber were prepared using carbon black and silica as reinforcement fillers, respectively, and subjected to cyclic fatigue process. Tensile, creep, and relaxation tests were performed on fatigued samples to assess the residual stress–strain behavior by comparing with the results from similar tests using pristine (no fatigue) samples. When the tensile stiffness behavior of fatigued specimens was evaluated, we noted that the stiffness versus strain behavior which exhibited a monotonic decreasing–increasing behavior with the pristine specimens changed to what we call “dual-stiffness” condition, where the specimens went through a first (low) turning point as with the pristine samples, but then dropped off of a peak to go through a second softening stage, similar to the first softening stage of the pristine material. We believe that such spiking (dual) stiffness behavior characterized by a “Peak” point represents a combination of both Payne and the Mullins effects active during fatigue loading. We conclude that molecular slippage and bond rupture are the main factors affecting the physical properties of carbon black-filled compounds, while breakage and recombination of the filler are the key mechanisms affecting the silica-filled compounds during the fatigue process.
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Xie, Xi Shan, Zhengdong Mao, Jian Xin Dong, and Yaohe Hu. "High Temperature Creep, Fatigue and Creep/Fatigue Interaction Behavior of γ' Strengthened Austenitic Iron-Base Superalloy." Key Engineering Materials 297-300 (November 2005): 1458–63. http://dx.doi.org/10.4028/www.scientific.net/kem.297-300.1458.

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A new modified Nb-containing A-286 γ' strengthened austenitic Fe-base superalloy (14Cr- 28Ni-1.5Mo-1W-2Ti-Nb-Al) designated as GH871 in China characterizes with high level of tensile, stress rupture and low cycle fatigue properties at 650°C. However, the stress rupture ductility is low and the crack propagation rates at 650°C creep or creep/fatigue interaction conditions are high. For ductility and crack propagation behavior improvement vacuum melted GH871 can still keep its high strength level, also raise stress rupture ductility and simultaneously to decrease crack propagation rates at 650°C. Our results support GH871 to be used as a disk material in high temperature industry.
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Ramião, N. G., P. S. Martins, M. L. Barroso, D. C. Santos, and A. A. Fernandes. "Breast implants rupture induced by fatigue phenomena." Journal of Plastic, Reconstructive & Aesthetic Surgery 70, no. 4 (April 2017): 552–53. http://dx.doi.org/10.1016/j.bjps.2017.01.002.

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Versluis, Antheunis, Alan J. Bank, and William H. Douglas. "Fatigue and plaque rupture in myocardial infarction." Journal of Biomechanics 39, no. 2 (January 2006): 339–47. http://dx.doi.org/10.1016/j.jbiomech.2004.10.041.

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Ker, R. F., X. T. Wang, and A. V. Pike. "Fatigue quality of mammalian tendons." Journal of Experimental Biology 203, no. 8 (April 15, 2000): 1317–27. http://dx.doi.org/10.1242/jeb.203.8.1317.

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When excised tendons are subjected to a prolonged load, whether constant or oscillatory, fatigue damage accumulates, leading eventually to rupture. ‘Fatigue quality’, assessed by the time-to-rupture under a given stress, was found to vary hugely among the tendons of a wallaby hind limb. This material property correlates with the varied stresses to which tendons from different anatomical sites are exposed in life. The correlation was demonstrated by subjecting each excised tendon to a load equal to the maximum isometric force that its muscle could have developed. The time-to-rupture was then approximately the same for each tendon, on average 4.2 h. A model is introduced in which damage is proposed as the trigger for adaptation of fatigue quality. The model aims, in particular, to explain why low-stressed tendons are not made of a ‘better’ material, although this clearly exists since it is used in high-stressed tendons. The principle of design to a minimum quality is viable in biology because of the availability of self-repair to balance routine damage. Clinical symptoms, to be included under the general heading of ‘overuse injuries’, will only arise when this balance fails.
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Ota, Yutaro, Tomomichi Ozaki, and Keiji Kubushiro.O. "The rupture life prediction in cold dwell fatigue of Ti-6Al-4V based on the creep deformation." MATEC Web of Conferences 321 (2020): 11071. http://dx.doi.org/10.1051/matecconf/202032111071.

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Titanium a lloys have been found that the fatigue strength of Ti alloys decreases due to cold dwell fatigue (CDF) at room temperature. Ti and Ti alloys generate creep deformation at room temperature (T/Tm = 0.15). Thus, it is considered that creep affects the reduction in fatigue life in CDF tests. This research intends to clarify the effects of long time dwell under tensile stress and rupture life prediction from the view of creep deformation in CDF characteristics of Ti-6Al-4V. Rupture cycle decreased with increase of dwell time. Additionally, lower limit of rupture life ratio “NCDF/NLCF” was defined from rupture in creep test if it was assumed that creep test was extremely long time dwell CDF test. When strain change in whole dwell time was extracted in CDF tests, strain change was like creep curves and minimum creep rate changed depending on dwell time. Minimum creep rate was calculated by the formula based on experimental results, and then rupture time was calculated by Monkman-grant relationship. All of rupture cycle predictions were in factor of 2. Therefore, rupture cycle and time can be calculated if dwell time is known in CDF tests.
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Wu, Baijian, Xuan Pei, and Zhi-Yong Li. "How Does Calcification Influence Plaque Vulnerability? Insights from Fatigue Analysis." Scientific World Journal 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/417324.

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Background.Calcification is commonly believed to be associated with cardiovascular disease burden. But whether or not the calcifications have a negative effect on plaque vulnerability is still under debate.Methods and Results.Fatigue rupture analysis and the fatigue life were used to evaluate the rupture risk. An idealized baseline model containing no calcification was first built. Based on the baseline model, we investigated the influence of calcification on rupture path and fatigue life by adding a circular calcification and changing its location within the fibrous cap area. Results show that 84.0% of calcified cases increase the fatigue life up to 11.4%. For rupture paths 10Dfar from the calcification, the life change is negligible. Calcifications close to lumen increase more fatigue life than those close to the lipid pool. Also, calcifications in the middle area of fibrous cap increase more fatigue life than those in the shoulder area.Conclusion.Calcifications may play a positive role in the plaque stability. The influence of the calcification only exists in a local area. Calcifications close to lumen may be influenced more than those close to lipid pool. And calcifications in the middle area of fibrous cap are seemly influenced more than those in the shoulder area.
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Dissertations / Theses on the topic "Rupture fatigue"

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Thieulot-Laure, Emmanuelle. "Méthode probabiliste unifiée pour la prédiction du risque de rupture en fatigue." Cachan, Ecole normale supérieure, 2008. https://tel.archives-ouvertes.fr/tel-01199575v1.

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Une des sources principales dʹaléa en fatigue est la présence de défauts dans le matériau. Pour établir les spécifications sur la propreté inclusionnaire d’un matériau, il faut pouvoir lier la probabilité de présence des défauts par taille et le risque de rupture par fatigue des composants. Les travaux de Kitagawa et Takahashi permettent de distinguer deux domaines en termes de dimensions de défauts vis à vis du risque de rupture par fatigue : celui des petits défauts, dans lequel la limite dʹendurance est indépendante de la dimension des défauts et celui des grands défauts où la dimension des défauts est généralement prise en compte dans le cadre de la MLER. Lorsque les distributions de défauts couvrent les deux domaines, il faut disposer dʹun modèle probabiliste continu en termes de dimensions de défauts. Pour cela nous avons développé un critère de fatigue « unifié » en termes de dimension de défauts. Il sʹagit dʹun critère de non‐propagation (les défauts sont supposés pré‐exister dans la structure) construit à partir dʹune énergie élastique de cisaillement critique en pointe de fissure. Cette énergie est calculée à lʹaide des champs asymptotiques de la MLER étendus à lʹordre supérieur (contrainte T), pour être applicable aux défauts de petites dimensions. Le critère est continu en termes de dimension de défaut et faiblement dépendant de leur taille lorsqu’elle diminue. Représenter le défaut par une fissure, classe le critère proposé dans la catégorie des critères à plan critique. Et, à travers la contrainte T, le critère est sensible au caractère multiaxial du chargement et répond comme le critère de Dang Van pour les très petits défauts. Le caractère probabiliste du risque de rupture par fatigue est alors introduit naturellement dans ce critère via les distributions de dimensions de défauts, en appliquant lʹhypothèse du maillon faible. Mais l’aléa lié à l’interaction entre les défauts et la microstructure intervient également. La dernière partie de notre étude s’est donc centrée sur l’analyse de la fluctuation des contraintes d’origine microstructurale et son influence sur la distribution des contraintes seuils de non‐propagation des défauts. Cette fluctuation induit une dispersion notable du seuil de non‐propagation pour des micro‐fissures dont la dimension est proche d’une dizaine de grains, puis lʹeffet disparaît progressivement avec lʹaugmentation de la dimension du défaut
One of the main sources of randomness in fatigue is the presence of defects in the material. So as to establish specifications about the material cleanliness, i. E. The distribution of inclusion sizes, the relation between the defect size and the risk of failure should be established. The pioneering results of Kitagawa and Takahashi have established that two domains can be distinguished: when defects are small, the endurance limit does not vary with the defect size. Endurance models are therefore expressed within the framework of continuum mechanics. On the contrary, the size of large defects should be accounted for, which is usually done within the framwork of linear elastic fracture mechanics. When the distributions of defects are wide, an accurate prediction of the failure probability requires a unified fatigue criterion in terms of defects sizes. Therefore, a non‐propagation criterion was developed. It is based on a critical elastic distortional energy around the crack tip and includes higher order terms (Tstress) of LEFM asymptotic fields, so as to be applicable to smaller defects. This criterion responds like the Dang Van criterion for small defects and like a non‐propagation threshold stress intensity factor for large defects. The probably of failure is then determined using the weakest link theory from the statistic distribution of defects sizes. However, when defects are small, their non‐propagation threshold becomes sensitive to the local environment of the defect. Therefore, the last part of this thesis concerns the fluctuation of stresses within the microstructure and its effects on the non‐propagation threshold of defects. This “microstructural” fluctuation induces a dispersion of the non‐propagation threshold, when defects have a dimension below ten grains and then vanishes progressively with the inverse of the squareroot of the defect size, when this defect size increases
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Huang, Yuan. "Material fatigue as a possible mechanism of atherosclerotic plaque rupture." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608011.

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Miot, Stéphanie. "Rupture de structures composites stratifiées sous chargements statique et de fatigue." Aix-Marseille 1, 2009. http://www.theses.fr/2009AIX11016.

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L’utilisation des matériaux composites est en plein essor depuis quelques années, notamment dans le secteur aéronautique. C’est dans le cadre d’un partenariat avec Eurocopter que s’inscrivent ces travaux de thèse visant à analyser expérimentalement et à modéliser le comportement jusqu’à rupture de structures composites stratifiées sous chargements statique et de fatigue. Pour décrire le comportement mécanique des matériaux composites, plusieurs mécanismes de dégradation sont à considérer. Un modèle, basé sur la Mécanique de l’Endommagement, a récemment été développé au LMA. Il traduit les effets des endommagements transverse et de cisaillement, se caractérisant par la formation de petites fissures évoluant le long des fibres. Ce modèle a été intégré dans le code de calcul Abaqus/Standard afin d’étudier le comportement de structures stratifiées soumises à un chargement statique ou de fatigue. Les comparaisons essais / simulation ayant mis en évidence le fait que les critères de rupture classiques ne fonctionnent pas si le champ de déformation n’est pas homogène, une approche non locale a été développé. Basée sur un Volume Caractéristique de Rupture, elle permet de prendre en compte l’effet des concentrations de contraintes pour décrire la rupture de structures stratifiées. Une confrontation expérimentale a permis de valider le modèle de comportement associé à l’approche non locale pour divers matériaux, stratifiés et géométries pour des cas de chargements statiques. L’application aux cas de chargements de fatigue est encore à l’étude. Toutefois, les premières comparaisons entre les résultats de simulations et les essais sont encourageants
Recent developments in the aeronautics industry have accelerated interest in the use of composites as primary structural materials. This project is based on a collaboration with Eurocopter. The objectives are to experimentally analyse and model the behaviour until failure of laminated composite structures under static and fatigue loadings. To describe the mechanical behaviour of composite materials, several damage mechanisms have to be considered. A model, based on the Continuum Damage Mechanics and recently developed at the LMA, takes into account the effects of transverse and shear damages characterized by the creation of small cracks which run along the fibres. This model was integrated into Abaqus/Standard in order to study the behaviour of laminated structures under static and fatigue loadings. The comparisons between experimental data and numerical simulations have proved that conventional failure criteria do not work if the strain field is inhomogeneous. A non local approach, based on the definition of a Fracture Characteristic Volume, has been developed. This method takes into account the effects of stress concentrations on the failure of laminated structures. Comparisons with experimental data allows to valid thebehaviour model associated to the non local approach for various materials, laminates and geometries in the case of static loading conditions. The application in the case of fatigue loading is in progress and first results are promising
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ROBILLARD, MARC. "Etude de l'endommagement et de la rupture en fatigue oligocyclique multiaxiale." Paris, ENMP, 1989. http://www.theses.fr/1989ENMP0190.

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L'objet de cette etude est de verifier la validite des principaux modele de prevision des durees de vie en fatigue oligocyclique multiaxiale proposes dans la litterature, a partir de resultats d'essais de traction-torsion-compression qui decrivent de multiples trajets de chargements. Le materiau principalement etudie est un acier inoxydable martensitique a 12% de chrome. Les chargements non proportionnels ne provoquent pas de surcissement supplementaire dans le cas de cet acier. On montre que le trajet de la fissure principale depend du type et du niveau de sollicitation. Des sequences de chargements de traction-torsion mettent en evidence le caractere directionnel de l'endommagement. Des chargements non proportionnels ont pour consequence d'abaisser la limite d'endurance du materiau. Ces memes chargements mettent en echec les principaux modeles de prevision des durees de vie. On propose alors une nouvelle approche en developpant un modele qui introduit une loi d'evolution de l'endommagement incrementale, dite directionnelle, car elle discretise la degradation du materiau sur chaque facette de l'element de volume de matiere. On montre ainsi comment il est possible de prevoir en plus du nombre de cycles a rupture, l'orientation de la fissure qui conduit a la ruine du materiau
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Herrera, Ramirez José Martin. "Les Mécanismes de fatigue dans les fibres thermoplastiques." Paris, ENMP, 2004. https://pastel.archives-ouvertes.fr/tel-00161491.

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La présente étude examine et compare le comportement des deux types de fibres PA66 et deux types de fibres PET à haute performance sous sollicitation en fatigue, menés jusqu'à la rupture, ainsi que la corrélation entre leurs (nano)structure et leur hétérogénéité structurale avec la durée de vie en fatigue. Plusieurs techniques ont été utilisées pour analyser les matériaux, tels que la microscopie électronique à balayage (MEB), la microanalyse EDS, la calorimétrie différentielle à balayage (DSC), la diffraction de rayons-X aux grands angles (WAXD) et la micro-spectroscopie Raman. Une analyse minutieuse des faciès de rupture en traction et en fatigue par microscopie électronique á balayage, ainsi qu’une étude de la durée de vie en fatigue ont été menées. Les résultats montrent que le processus de fatigue se produit quand l’amplitude de la charge est suffisamment grande, mais à condition que la charge minimale à chaque cycle reste inférieure à un certain seuil en contrainte. La morphologie des faciès de rupture en fatigue est différente de celles des faciès de rupture en traction ou en fluage, ce qui permet de distinguer facilement un processus de fatigue. Les fibres ont été analysées à l’état “brut de fabrication” et après rupture en fatigue afin d’observer les changements microstructuraux résultant de la sollicitation en fatigue. Les résultats seront comparés avec ceux obtenus pour des fibres sollicitées cycliquement dans des conditions où la fatigue a été annihilée. Le rôle de la microstructure des fibres déterminant la fatigue sera discuté dans ce travail et la possibilité d'améliorer leur résistance à la fatigue ou d'éliminer le processus de fatigue sera discutée
The present study examines and compares the behaviour of the two types of PA66 fibres and two types of PET fibres under fatigue loading up to failure, and the correlation between the fibres’ (nano)structures and their structural heterogeneities, with fatigue lifetimes. Several techniques have been used to analyze the materials, such as scanning electron microscopy (SEM), microanalysis (EDS), differential scanning calorimetry (DSC), wide angle X-ray diffraction (WAXD) and micro-Raman spectroscopy. A meticulous analysis by scanning electron microscopy of the fracture morphology of fibres broken in tension and in fatigue, as well as a study of the fatigue life, were undertaken. The fatigue process occurs when the cyclic load amplitude is sufficiently large, however a condition for fatigue failure is that the minimum load each cycle must be lower than a threshold stress level. Failure under fatigue conditions leads to distinctive fracture morphologies which are very different from those seen after tensile or creep failure and this allows easy identification of the fatigue process. The fibres have been analyzed in the as received state and after fatigue failure in order to observe the microstructural changes resulting from the fatigue loading. The results will be compared with those obtained for fibres loaded under conditions where the fatigue process was hindered. The role of the microstructure of the fibres in determining fatigue will be discussed in this work and the possibility of improving their resistance to fatigue or eliminating the fatigue process will be discussed
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Ribeiro, Patrick. "Analyse entropique et multi-échelle pour la fatigue et la rupture thermomécanique." Thesis, Paris 10, 2017. http://www.theses.fr/2017PA100108/document.

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Ce travail de thèse apporte une contribution à l’utilisation de grandeurs thermodynamiques ainsi que géométriques en mécanique. La première partie de ce manuscrit est consacrée à l’étude de la fatigue oligocyclique, et de l’entropie de rupture en fatigue. Des entropies de rupture en fatigue sont estimées expérimentalement par diverses relations et sont comparées aux modèles empiriques utilisés dans la littérature. Il apparait que ces diverses entropies de rupture sont très proches ce qui permet de conclure qu'il existe une entropie de rupture constante liée uniquement au matériau. Pour les modèles empiriques, une extension du modèle de Ramberg-Osgood cyclique prenant en compte la variation temporelle de la contrainte est proposée et une étude sur l'imprécision du modèle de Park et Nelson est réalisée. Puis, une étude des différentes phases durant le test de fatigue est effectuée à travers l’étude de l’endommagement lié à l’entropie accumulée par le matériau. Une extension par l’utilisation du concept d’exergie permet la mise en évidence d’une nouvelle quantité, une exergie associée au travail de déformation plastique faisant intervenir une notion de qualité de la déformation plastique. Dans une deuxième partie, la diffusion de l’entropie d’échelle est étudiée et permet de créer divers comportements dépendants d’échelle. Elle permet d’étudier la log-périodicité d’un fractal déterministe fini (ou préfractal) ou de vérifier la construction de géométries déterministes finies dépendantes d’échelle. Une application de ces modèles dépendants d’échelle est effectuée dans le cadre de la détermination de propriétés mécaniques, pour l’analyse de faciès de rupture et pour la fragmentation. Finalement un lien possible entre comportement mécanique, géométrie et théorie constructale est présenté
This Phd thesis is a contribution to the use of thermodynamics and geometry in mechanics. The first part of this manuscript is devoted to the study of low cycle fatigue and the notion of fracture fatigue entropy. Fracture fatigue entropies are experimentally estimated by various equations and compared to empirical models used in the litterature. It appears that these diverse fracture fatigue entropies are very close and allows to conclude that a constant fracture fatigue entropy exists only depending on the material. For the empirical models, an extension of the Ramberg-Osgood model is proposed taking into account the temporal variation of the loading, and, a study on the inaccuracy of the Park and Nelson model is realized. Then, a study on the different phases occurring in a fatigue test is done through the study of a damage parameter based on the entropy accumulated by the material. An extension using the concept of exergy allows the highlight of a new quantity, an exergy associated with plastic strain involving a quality factor. In a second part, the diffusion of scale-entropy is studied and permits to create various scale-dependent behaviors. It allows the study of log-periodicity of a finite deterministic fractal (or prefractal), or the verification of finite deterministic scale-dependent geometries. An application of these scale-dependent models is performed within the framework of the determination of mechanical properties, for the analysis of fractured surfaces and for fragmentation. Finally, a possible link between mechanical behavior, geometry and constructal theory is presented
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Grous, Ammar. "Etude probabiliste du comportement à la rupture des assemblages soudés." Mulhouse, 1994. http://www.theses.fr/1994MULH0300.

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Le comportement à la rupture des structures est caractérisé, sur le plan de la mécanique linéaire, par une variation locale des propriétés élastiques du matériau. Ceci impose, inéluctablement, des calculs succincts de dimensionnement devant sécuriser les utilisateurs. L'objet de ce travail est d'étudier, par une loi de fissuration de type, le comportement d'un élément de structure en croix soudée par quatre différents procédés de soudage : SAW, FCAW, SMAW 57 et SMAW 76. La première partie de ce travail présente les différentes techniques analytiques qui ont permis l'obtention des paramètres d'influence majeure de la loi de fissuration, à savoir : - les coefficients intrinsèques du matériau de la loi de PARIS-ERDOGAN, - les fissures initiales calculées par dichotomie, pour chacune des expériences, - la modélisation statistique des précédents paramètres. La deuxième partie est consacrée à l'emploi de la simulation de Monte-Carlo et de la méthode de l'intégrale indicatrice du dommage, pour évaluer la probabilité de défaillance et l'indice de fiabilité, pour les quatre procédés de soudage. Le but est de choisir, parmi ces procédés, lequel des quatre assure une durée de vie meilleure à la structure, c'est-à-dire, une bonne marge de sécurité. La définition des coefficients de sécurité constituait un élément majeur pour le dimensionnement des structures. De nos jours, l'interprétation et la philosophie même de ces coefficients est renforcée par des calculs probabilistes de plus en plus précis. Pour rationaliser le concept de la marge de fiabilité, de nombreux travaux ont été faits, toutefois on ne voit pas encore se dégager une démarche unitaire sur l'aspect de la mécanique de la rupture et sur celui probabiliste. En dernière analyse, nous constatons que la simulation de Monte-Carlo reste aussi efficace que la méthode de l'intégrale indicatrice du dommage. Nous recommandons cette dernière car elle apparaît plus simple d'emploi, aussi précise que la première et moins coûteuse en temps calcul. Au terme de ce travail, on peut recommander l'utilisation du procédé de soudage SMAW 76 pour lequel la durée de vie est meilleure eu égard à la petite probabilité de défaillance et au plus grand indice de fiabilité
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Lavender, David A. "Deformation and rupture of structures due to combined cyclic plasticity and creep." Thesis, University of Leicester, 1987. http://hdl.handle.net/2381/34793.

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The effect of creep-fatigue conditions on structural components is not completely understood, and so the prediction of the behaviour and lifetime of such components is often unreliable and inaccurate. One of the methods proposed to improve the predictions is continuum damage mechanics, which provides a general description of material behaviour under degrading conditions. An estimate of life is usually based on the initial behaviour of a component. However, the work of previous researchers has shown that accurate predictions of the creep life of structures require that the stress redistribution due to the growth of damage is taken into account. In this thesis, this work is extended to fatigue and the effect of fatigue damage on life and deformation is studied for multibar model structures. The non-linear kinematic hardening rule is introduced as a constitutive law for cyclic plasticity that models many aspects of the cyclic behaviour of metals. Its properties are studied and it is extended to include the effects of damage on cyclic deformation. Creep-fatigue is studied by combining the models for fatigue and creep. Using published material data, the creep-fatigue behaviour of a two bar structure is studied and the results are compared with some experimental results. A study is made of finite element methods for solving problems involving plasticity and an example problem is solved. A model for the multiaxial behaviour of damaged material is proposed and examined for simple cases. The studies show that stress redistribution has a significant effect on fatigue life and the qualitative properties of the uniaxial models are very close to experimental observations. However, a lack of suitable and consistent experimental data on material behaviour means that the lifetime predictions and the multiaxial models are of uncertain accuracy.
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Karakaya, Agop. "Fatigue oligocyclique du béton soumis à la torsion." Lyon, INSA, 1985. http://www.theses.fr/1985ISAL0001.

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Le présent travail a pour objectif d'étudier le comportement du béton sous la sollicitation de torsion en fatigue dans le domaine oligo-cyclique. Il conduit à une modélisation de l'évolution des déformations et des contraintes tangentes ainsi que la relation entre le taux maximal de chargement et le nombre de cycles de rupture. Cette étude se fonde sur des essais réalisés sur des cylindres pleins et creux en béton. Ce mémoire se divise en trois parties Dans la première partie, après avoir déterminé les paramètres essentiels ayant une influence sur la vie à la fatigue du béton soumis à la torsion, nous décrirons les lois proposées sur le comportement du béton en torsion statique. La deuxième partie présente l'ensemble des résultats obtenus à partir des essais statiques et cycliques du béton sous l'effet de torsion. Nous observons que la relation entre le taux maximal de chargement et le nombre de cycles de rupture es t non linéaire pour le domaine oligo-cyclique. Par ailleurs, nous avons mis en évidence l'évolution des déformations volumétriques maximales et résiduelles lors de l'essai cyclique. La troisième partie a pour objet de modéliser le comportement du béton soumis à la fatigue oligo-cyclique en torsion. Ainsi, un modèle a été établi entre le taux maximal de chargement et le nombre de cycles de rupture afin de prévoir la durée de vie du béton, La modélisation de l'évolution des rotations unitaires maximales et résiduelles nous a permis de traduire le comportement du béton soumis à la torsion cyclique, jusqu'à la rupture. Les évolutions de la rigidité selon les pentes sécantes du béton et des courbes de chargement-déchargement ont été modélisées
The purpose of this study is to examine the behaviour of concrete under torsional fatigue in the oligo-cyclic domain. It leads to a model of the deformation sand the shear stresses as well as the relation between maxi mum load ratio and the number of cycles to failure. This study is based on the tests of plain and hollow concrete cylindrical specimens. This memory is divided into tree parts In the first part, after determining the essential parameters having an influence on the fatigue life of concrete subjected to torsion, we describe the proposed model relating to behaviour of concrete due to static torsion. The second part presents the results obtained from static and cyclic tests of concrete under torsion. We observe that the relation between maximum load ratio and the number of cycles to failure is non linear for the oligo-cyclic domain. Furthermore, we have showed the evolution of maximum and residual volumetric deformations at the time of the cyclic test, The last part proposes to model the behaviour of concrete subjected to oligo cyclic fatigue in torsion. Thus, a model has been established between maximum load ratio and the number of failure cycles to predict the number of the cycles to failure. The model of the evolution of maximum and residual twists has enabled us to express the behaviour of concrete subjected to cyclic torsion, up to the failure. The evolutions of the rigidity according to the secant slopes of concrete and the loading-reloading curves have been also modelled
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Jaubert, André. "Approche variationnelle de la fatigue." Phd thesis, Université Paris-Nord - Paris XIII, 2006. http://tel.archives-ouvertes.fr/tel-00315565.

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En adoptant un principe de moindre énergie, une énergie de surface de type Dugdale-Barenblatt et une condition d'irréversibilité, on construit un modèle de propagation de fissure opérant aussi bien sous chargement monotone que sous chargement cyclique. Plus précisément, à travers l'exemple du décollement d'un film mince, on montre tout d'abord qu'en utilisant une énergie de surface de Griffith, il est impossible de rendre compte du phénomène de fatigue. Par contre, avec une énergie de surface de type Barenblatt, on prouve que la solution du problème incrémental correspond au décollement progressif du film, cycle après cycle. Le nombre de cycles jusqu'à décollement total du film dépend des paramètres du problème. On étudie ensuite le décollement en fatigue lorsque la longueur caractéristique du modèle de Barenblatt est petite devant celle du film. On obtient alors une loi de fatigue limite qui contient à la fois la loi de propagation de Griffith sous chargement monotone et une loi de fatigue de type Paris sous chargement cyclique. Cette loi déduite de la minimisation d'énergie dépend à la fois de la structure, du matériau et du chargement. Lorsque l'on modifie la condition d'irréversibilité, l'énergie potentielle ou le type de chargement, on obtient d'autres lois de fatigue limites même si elles sont toujours du même type. Il s'agit enfin de mettre en évidence les propriétés de telles lois et de les étendre à des problèmes plus généraux.
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Books on the topic "Rupture fatigue"

1

Pluvinage, Guy. Fracture and fatigue emanating from stress concentrators. Dordrecht: Kluwer Academic publishers, 2010.

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Lemaignan, Cle ment. La Rupture des mate riaux. Les Ulis, France: EDP Sciences, 2003.

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Pluvinage, Guy, Taoufik Boukharouba, and Mimoun Elboujdaini. Damage and fracture mechanics: Failure analysis of engineering materials and structures. Dordrecht, The Netherlands: Springer Verlag, 2009.

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Colangelo, Vito J. Analysis of metallurgical failures. 2nd ed. New York: Wiley, 1987.

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Monotonic, Creep-Rupture, and Fatigue Behavior of Carbon Fiber Reinforced Silicon Carbide (C/SiC) at an Elevated Temperature. Storming Media, 2004.

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Kaufman, J. Gilbert, and Elwin L. Rooy. Aluminum Alloy Castings. ASM International, 2004. http://dx.doi.org/10.31399/asm.tb.aacppa.9781627083355.

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Aluminum Alloy Castings: Properties, Processes and Applications is a practical guide to the process, structure, property relationships associated with aluminum alloy castings and casting processes. It covers a wide range of casting methods, including variations of sand casting, permanent mold casting, and pressure die casting, showing how key process variables affect the microstructure, properties, and performance of cast aluminum parts. Other chapters provide similar information on the effects of alloying and heat treating and the influence and control of porosity and inclusions. A significant portion of the book contains curated collections of property and performance data, including many previously unpublished aging response curves, growth curves, and fatigue curves; tensile properties at high and low temperatures and at room temperature after high-temperature exposure; the results of creep rupture tests conducted at temperatures from 212 to 600 °F (100 to 315 °C); and stress-strain curves obtained from casting alloys in various tempers under tensile or compressive loads. The book also discusses the factors that contribute to corrosion and fracture resistance and includes test specimen drawings as well as a glossary of terms. For information on the print version, ISBN 978-0-87170-803-8, follow this link.
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Book chapters on the topic "Rupture fatigue"

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Azaïs, Romain, Anne Gégout-Petit, and Florine Greciet. "Rupture Detection in Fatigue Crack Propagation." In Statistical Inference for Piecewise-deterministic Markov Processes, 173–207. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2018. http://dx.doi.org/10.1002/9781119507338.ch6.

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Binsheng, Zhang, Zhu Zhaohong, and Wu Keru. "Fatigue Rupture of Plain Concrete Analysed by Fracture Mechanics." In Fracture of Concrete and Rock, 58–63. New York, NY: Springer New York, 1989. http://dx.doi.org/10.1007/978-1-4612-3578-1_6.

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Moller, J. C., S. A. Barr, T. D. Breitzman, G. S. Kedziora, A. M. Ecker, R. J. Berry, and D. Nepal. "Prediction of Incipient Nano-Scale Rupture for Thermosets in Plane Stress." In Fracture, Fatigue, Failure and Damage Evolution, Volume 8, 17–25. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-21611-9_3.

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Sun, Eugene, Tab Heffernan, and Randy Helmink. "Stress Rupture and Fatigue in Thin Wall Single Crystal Superalloys with Cooling Holes." In Superalloys 2012, 351–62. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118516430.ch38.

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"Rupture and Creep-Fatigue." In Encyclopedia of Tribology, 2969–70. Boston, MA: Springer US, 2013. http://dx.doi.org/10.1007/978-0-387-92897-5_101174.

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Kun, F. "Fibre bundle models for creep rupture analysis of polymer matrix composites." In Creep and Fatigue in Polymer Matrix Composites, 327–49. Elsevier, 2011. http://dx.doi.org/10.1533/9780857090430.2.327.

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HILD, F., and D. MARQUIS. "A STATISTICAL APPROACH TO THE MONOTONIC AND FATIGUE RUPTURE OF MONOLITHIC CERAMICS." In Mechanical Behaviour of Materials VI, 509–14. Elsevier, 1992. http://dx.doi.org/10.1016/b978-0-08-037890-9.50334-3.

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Streibl, B., E. A. Maier, J. Perchermeier, P. L. Cimbrico, G. Varni, D. Pisani, R. Deska, J. Endreat, and R. Schäfer. "SHEAR STRENGTH OF THE ASDEX UPGRADE TF COIL INSULATION: RUPTURE, FATIGUE AND CREEP BEHAVIOUR." In Fusion Technology 1986, 1601–8. Elsevier, 1986. http://dx.doi.org/10.1016/b978-1-4832-8376-0.50223-0.

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K., YAGI, KUBO K., KANEMARU O., and TANAKA C. "EFFECT OF GRAIN SIZE ON RUPTURE LIFE UNDER CREEP-FATIGUE LOADING FOR 321 STAINLESS STEEL." In Mechanical Behaviour of Materials VI, 583–88. Elsevier, 1992. http://dx.doi.org/10.1016/b978-0-08-037890-9.50490-7.

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"Corrosion Fatigue and Subsequent Rupture of a Yankee Dryer Roll on a Modified Paper Machine." In Handbook of Case Histories in Failure Analysis, 132–35. ASM International, 1992. http://dx.doi.org/10.31399/asm.fach.v01.c9001050.

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Conference papers on the topic "Rupture fatigue"

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Mao, Zhaofeng, Dangwen Chen, Shangjun Jiang, Zishun Zhao, and Guobin Yang. "Study on Fatigue Rupture of Automotive Rear Stabilizer-Bar." In SAE 2012 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2012. http://dx.doi.org/10.4271/2012-01-0921.

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Sun, E., T. Heffernan, and R. Helmink. "Stress Rupture and Fatigue in Thin Wall Single Crystal Superalloys with Cooling Holes." In Superalloys. John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.7449/2012/superalloys_2012_353_262.

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Cayro, Evandro E. Pandia, and Eduardo Bittencourt. "QUASI-FRAGILE MATERIAL RUPTURE IN STATIC LOADING AND IN FATIGUE CONSIDERING SCALE CHANGES." In XXXVIII Iberian-Latin American Congress on Computational Methods in Engineering. Florianopolis, Brazil: ABMEC Brazilian Association of Computational Methods in Engineering, 2017. http://dx.doi.org/10.20906/cps/cilamce2017-0430.

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Sakane, Masao, and Takamoto Itoh. "Effect of Hydrostatic Stress on Low Cycle Fatigue Life." In ASME 2005 Pressure Vessels and Piping Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/pvp2005-71756.

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This paper overviews the effect of hydrostatic stress on the static tensile stress-strain relationship, low cycle fatigue life, creep rupture time and creep-fatigue life at room and elevated temperatures. There was almost no influence of the hydrostatic stress on the tensile stress-strain relationship but the tensile ductility was increased by the hydrostatic stress. Small or little increase of fatigue life was observed by the superposition of the hydrostatic stress under a full reversed loading but a clear increase of fatigue life was found in a zero-to-tension loading. The hydrostatic stress significantly lowered the creep strain rate and elongated the creep rupture time. The hydrostatic stress also increased the creep-fatigue life under a full reversed loading.
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Jianping, Xu, and Xiong Jiyuan. "Influence of Aluminide Coating on Fatigue Behavior of a Nickel Superalloy." In ASME 1985 Beijing International Gas Turbine Symposium and Exposition. American Society of Mechanical Engineers, 1985. http://dx.doi.org/10.1115/85-igt-77.

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The influence of the technology and the thickness of an aluminide coating on mechanical fatigue of a nickel-alloy at 700°C has been studied. It was shown that the brittleness and the surface roughness of coating were the basic causes to the earlier rupture of a system. The thicker coating, the more harmful to fatigue performance. The mechanism of influnece of coating on metal fatigue and the possibility to estimate fatigue life of coating/alloy system were also discussed. It is believed that the stress concentration caused by coating crack accelerated substrate alloy to rupture.
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Carter, Peter, R. I. Jetter, and T. L. (Sam) Sham. "Application of Shakedown Analysis to Evaluation of Creep-Fatigue Limits." In ASME 2012 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/pvp2012-78083.

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Shakedown analysis may be used to provide a conservative estimate of local rupture and hence cyclic creep damage for use in a creep-fatigue assessment. The shakedown analysis is based on an elastic-perfectly plastic material with a temperature-dependent pseudo yield stress defined to guarantee that a shakedown solution exists, which does not exceed rupture stress and temperature for a defined life. The ratio of design life to the estimated cyclic life is the shakedown creep damage. Fatigue damage may be calculated from the local strain values in the shakedown analysis using the existing procedures in Appendix T of Subsection NH for equivalent strain range. The methodology does not require stress classification and is also applicable to cycles over the full range of temperature above and below the creep regime.
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Shimazu, Ryuya, and Michiya Sakai. "Buckling and Fatigue Evaluation of Braced Piping Support by Numerical Analysis." In ASME 2019 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/pvp2019-93830.

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Abstract Buckling and fatigue evaluation of braced piping supports was conducted using numerical analysis. Buckling and fatigue occurred on the piping support during vibration and static load tests. A numerical model for the evaluation was developed, and the load–displacement relationship and local strain obtained by the numerical analysis were in good agreement with experimental results. Thus, the numerical model was validated. Buckling and fatigue evaluations were subsequently conducted using the model. In the buckling evaluation, the experimental buckling load was in good agreement with that obtained by Johnson’s formula. Fatigue evaluation was conducted to investigate whether fatigue crack had occurred before the rupture on the piping support. The linear cumulative damage was calculated, suggesting the possibility of fatigue crack formation. Ductile rupture was considered to occur after the fatigue crack formation.
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Oh, J., N. Katsube, and F. W. Brust. "Unresolved Issues With Regard to Creep and Creep Fatigue Life Prediction." In ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1190.

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This paper studies intergranular creep failure of high temperature service material under a stress-controlled unbalanced cyclic loading condition. The grain boundary rupture process was numerically analyzed using Tvergaard’s axisymetric model. The present numerical model incorporated the experimentally verified Murakami-Ohno cyclic strain hardening creep law and Norton’s creep law. The numerical results show that void growth accelerates under cyclic loading condition. Also, analysis shows that a steady state creep law is not sufficient to analyze damage evolution under cyclic loading conditions.
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Bender, Thorben, Andreas Klenk, and Stefan Weihe. "Damage Assessment of Similar Martensitic Welds Under Creep, Fatigue and Creep-Fatigue Loading." In ASME 2020 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/pvp2020-21497.

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Abstract For the assessment of welds under high-temperature conditions in the creep or creep-fatigue regimes, the knowledge on the damage location and its temporal evolution are of high importance. The failure behavior of similar welds of ferritic-martensitic steels in the creep regime is well known. For creep-fatigue loading, the behavior of welds is still subject to research but it seems that the heat affected zone (HAZ) limits the lifetime of welded components as well. This local failure behavior is not reflected in design guidelines using weld reduction factors or in typical assessment approaches. The evaluation of local strains and stresses in the HAZ is unavoidable. For the improvement of design and inspection guidelines, a more detailed consideration of weld behavior is of interest. In this paper, an overview of current developments in the assessment of welds under creep, fatigue, and creep-fatigue loading conditions is given. An assessment approach for creep damage and failure, including the prediction of rupture time and location, is presented. The assessment is based on numerical analyses considering the different behavior of base material and HAZ represented by three different subzones. The approach is validated with the simulation of a uniaxial cross weld, creep crack, and component tests. Whereas the creep behavior of the HAZ compared to base metal is quite well known, there is only little knowledge of their fatigue behavior. Using a set of fatigue tests on HAZ, base metal specimens and cross weld specimens, the influence of fatigue and creep-fatigue loading on the lifetime and failure location of a weld will be discussed. For the numerical simulations, a viscoplastic material law of Chaboche type is used and an evaluation of the local strains in the HAZ allows an attempt to explain the observed failure locations.
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Vieth, Patrick H., Clifford J. Maier, and Carl E. Jaske. "Pressure Cycle Fatigue: A Statistical Assessment Approach." In 2004 International Pipeline Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ipc2004-0556.

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Operational pressure cycle fatigue (PCF) is one of the integrity threats managed by pipeline operators. Usually, hazardous liquid pipeline operators are most interested in the effects of pressure cycles since these pipelines inherently experience more significant pressure cycles than natural gas pipelines. The parameters considered in the assessment of operational pressure cycles include pipe geometry (diameter and wall thickness), mechanical properties of the pipe, distribution of hypothetical defect sizes that may exist in the pipeline, and pressure cycles. In performing these assessments, the most conservative value for each parameter is commonly used for predicting a time to failure. As such, the results are inherently overly conservative. A statistical assessment method, PCFStat, has been developed to more appropriately model the input parameters used in the assessment of operational pressure cycle fatigue; especially for cases where the deterministic approach identifies relatively short remaining fatigue lives. A distribution of each of the input parameters is developed, and then a Monte Carlo simulation of these parameters is performed. The results produced by this analysis are then used to evaluate the probability of a failure (leak or rupture) for a defined time interval.
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Reports on the topic "Rupture fatigue"

1

McMurtrey, Michael. Report on the FY18 creep rupture and creep-fatigue tests on the first commercial heat of Alloy 709. Office of Scientific and Technical Information (OSTI), August 2018. http://dx.doi.org/10.2172/1484686.

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Olek, J., Menashi Cohen, and Charles Scholer. Use of Modulus of Rupture, Fatigue Resistance and Maturity in Determining Opening to Traffic Time for Concrete Pavements. West Lafayette, IN: Purdue University, 2003. http://dx.doi.org/10.5703/1288284313341.

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Natesan, Krishnamurti, Xuan Zhang, and Meimei Li. Report on the initiation of planned FY18 short and intermediate term creep rupture tests and creep-fatigue tests on the first commercial heat of Alloy 709. Office of Scientific and Technical Information (OSTI), January 2018. http://dx.doi.org/10.2172/1485134.

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