Bibliografie tematiche / Fatigue aging

Letteratura scientifica selezionata sul tema "Fatigue aging"

Autore: Grafiati
Pubblicato: 8 giugno 2024

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Articoli di riviste sul tema "Fatigue aging":

1

Tralongo, Paolo, Daniela Respini e Francesco Ferraù. "Fatigue and aging". Critical Reviews in Oncology/Hematology 48 (ottobre 2003): S57—S64. http://dx.doi.org/10.1016/j.critrevonc.2003.07.003.

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2

Hunter, Sandra K. "Aging and Muscle Fatigue". Medicine & Science in Sports & Exercise 38, Supplement (maggio 2006): 46. http://dx.doi.org/10.1249/00005768-200605001-00158.

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3

Hunter, Sandra K. "Aging and Muscle Fatigue". Medicine & Science in Sports & Exercise 38, Supplement (maggio 2006): 46. http://dx.doi.org/10.1249/00005768-200605001-00299.

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4

Balducci, L. "Anemia, fatigue and aging". Transfusion Clinique et Biologique 17, n. 5-6 (dicembre 2010): 375–81. http://dx.doi.org/10.1016/j.tracli.2010.09.169.

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5

Ma, Liyong, Chi Liu, Minglei Ma, Zhanying Wang, Donghao Wu, Lijuan Liu e Mingxing Song. "Fatigue Fracture Analysis on 2524 Aluminum Alloy with the Influence of Creep-Aging Forming Processes". Materials 15, n. 9 (30 aprile 2022): 3244. http://dx.doi.org/10.3390/ma15093244.

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The different creep-aging forming processes of 2524 aluminum alloy were taken as the research object, and the effects of creep-aging temperature and creep stress on the fatigue-crack propagation properties of the alloy were studied. The research results showed the following under the same sintering time of 9 h, at creep-aging temperatures of 100 °C, 130 °C, 160 °C, and 180 °C, respectively, with an increase in creep-aging temperature: the fatigue-crack propagation rate was promoted, the spacing of fatigue striations increased, and the sizes of dimples decreased while the number was enlarged; this proves that the fatigue property of the alloy was weakened. Compared with the specimens with creep deformation radii of 1000 mm and 1500 mm, the creep deformation stress was the smallest when the forming radius was 1800 mm, with a higher threshold value of fatigue-crack growth in the near-threshold region of fatigue-crack propagation (ΔK ≤ 8 MPa·m1/2). Under the same fatigue cycle, the specimens under the action of larger creep stress endured a longer fatigue stable-propagation time and a faster fracture speed. Comparing the effect of creep-aging temperature and creep stress, the creep-aging temperature plays a dominant role in the fatigue-crack propagation of creep-aged 2524 aluminum alloy.
6

Liu, Xing, Shaopeng Wu, Ling Pang, Yue Xiao e Pan Pan. "Fatigue Properties of Layered Double Hydroxides Modified Asphalt and Its Mixture". Advances in Materials Science and Engineering 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/868404.

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This study investigated the influence of layered double hydroxides (LDHs) on the fatigue properties of asphalt mixture. In this paper, different aging levels (thin film oven test (TFOT) and ultraviolet radiation aging (UV aging for short)) of bitumen modified with various mass ratios of the LDHs were investigated. The TFOT and UV aging process were used to simulate short-term field thermal-oxidative aging and long-term field light UV aging of bitumen, respectively. The influences of LDHs on the fatigue properties of LDHs were evaluated by dynamic shear rheometer (DSR) and indirect tensile fatigue test. Results indicated that the introduction of LDHs could change the fatigue properties of bitumen under a stress control mode. The mixture with modified bitumen showed better fatigue resistance than the mixture with base bitumen. The results illustrated that the LDHs would be alternative modifiers used in the bitumen to improve the lifetime of asphalt pavements.
7

HAYASHI, KOUSUKE, TAKANORI NAGANO, MICHIHIKO MORIYAMA, XISHU WANG e NORIO KAWAGOISHI. "EFFECTS OF AGING STRUCTURES AND HUMIDITY ON FATIGUE PROPERTIES OF MARAGING STEEL". International Journal of Modern Physics: Conference Series 06 (gennaio 2012): 306–11. http://dx.doi.org/10.1142/s2010194512003352.

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Effects of aging structures and humidity on fatigue properties of 350 grade 18% Ni maraging steel were investigated under rotating bending in relative humidity of 25% and 85%. Aging conditions tested were a conventional single aging and a double one which was aged at low temperature after the conventional aging. In each aging, under and peak aged steels were prepared. Tensile strength was increased by the double aging without reduction of the ductility. Proportional relation between fatigue limit and Vickers hardness held until 750HV in low humidity. However fatigue strength was largely decreased by high humidity, especially in the peak aged steel at the single aging. The decrease in fatigue strength by high humidity was mainly caused by the acceleration of a crack initiation due to the anodic dissolution. The acceleration of a crack initiation was larger in the steel peak aged at the single aging with larger precipitated particles.
8

Li, Shilei, Yanli Wang e Xitao Wang. "Effects of Thermal Aging on the Low Cycle Fatigue Behaviors of Cast Duplex Stainless Steels". Metals 9, n. 3 (25 marzo 2019): 378. http://dx.doi.org/10.3390/met9030378.

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The low cycle fatigue (LCF) behaviors of cast duplex stainless steel (CDSS) thermally aged at different times were investigated under different strain amplitudes. The effects of thermal aging on the LCF lives of CDSS are closely related to the strain amplitude. At a low strain amplitude, the fatigue life of the material increases significantly after thermal aging, while the LCF life decreases with an increasing aging time at a high strain amplitude. After thermal aging at 400 °C for 10,000 h, the fatigue fracture morphologies of CDSS change from fatigue fringes to mixture features including fatigue fringes in austenite and cleavage cracks in ferrite. Severe plastic deformation in ferrite of the aged CDSS under a high strain amplitude causes the cleavage cracking of ferrite. The premature failure of ferrite accelerates the propagation of fatigue crack and shortens the fatigue life at a high strain amplitude.
9

Nakagawa, Keiyu, e Teruto Kanadani. "Effects of Microstructures on the Mechanical Properties of Dilute Al-Si Alloys". Key Engineering Materials 345-346 (agosto 2007): 821–24. http://dx.doi.org/10.4028/www.scientific.net/kem.345-346.821.

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In this paper, we investigated effects of aging at 473K on the relationship between microstructure in the vicinity of the grain boundaries and fatigue strength for Al-1.2%Si alloy. Results obtained show the following features. (1) As aging time, tA increase, the tensile strength (σB) and 0.2% proof stress (σ0.2) increase slowly, but gradually decrease after reaching a maximum at around 18 ks. On the other hand, fracture elongation shows an opposite trend, suggesting that at aging times above 18ks, over aging occurs. (2) The fatigue strength lowers with increasing aging time, however, when the aging time is more than 18 ks at 473K, the fatigue strength remains almost the same. (3) When the aging time is more than 6 ks, grain boundary precipitates with a size greater than several 10s of nm are observed. (4) When the aging time is 18 ks, an accumulation of dislocations are observed at the grain boundaries and in the vicinity of grain boundary precipitates, and dislocations increase with the number of stress cycles. (5) When the aging time is more than 6 ks, the fatigue fracture surface is mainly intergranular. These results suggest that reduction of fatigue strength results from propagation of micro-cracks which are initiated at the large precipitates on the grain boundaries.
10

Wang, S. Q., Jin He Liu e Dao Lun Chen. "Influence of Heat Treatment on Fatigue Resistance of Electron Beam Welded Dissimilar Titanium Alloy Joints". Advanced Materials Research 891-892 (marzo 2014): 1539–44. http://dx.doi.org/10.4028/www.scientific.net/amr.891-892.1539.

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The purpose of this study was to evaluate the influence of heat treatment on the microstructural change and low cycle fatigue (LCF) resistance of an electron beam welded (EBWed) dissimilar joint between Ti-6Al-4V and Ti17 alloys. The aging with solution (STA) had a more significant effect on the microstructure and hardness than aging, compared to the as-welded joint. The post-welded joints in both aging and STA conditions were basically cyclic stable at low strain amplitudes up to 0.6%, while cyclic softening occurred at higher strain amplitudes. The fatigue life in the aging condition was slightly longer than that in the STA condition at the lower strain amplitudes. Fatigue crack initiation occurred from the specimen surface or near-surface defect, and fatigue crack propagation was characterized mainly by the fatigue striations coupled with secondary cracks in both aging and STA conditions.
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Ti possono interessare anche gli elenchi estesi di opere sul tema "Fatigue aging":
Articoli di riviste Tesi Libri

Tesi sul tema "Fatigue aging":

1

St, Clair Gibson Alan. "Fatigue, aging and the neuromuscular system". Master's thesis, University of Cape Town, 2001. http://hdl.handle.net/11427/3205.

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Bibliography: p. 400-445.
The aim of this thesis was to investigate the relationship between chronic exercise activity, aging, the neuromuscular system and the symptom of fatigue in a series of studies. The hypothesis of the thesis was that in contrast to the accepted dogma that exercise is beneficial to an individual, increasing longevity and improving quality of life, excessive or chronic exercise activity may accelerate the aging process, lead to neuromuscular damage, and cause the development of pathological symptoms or levels of fatigue.
2

Narynbek, Ulu Kubat. "Fatigue of HNBR - Effects of formulation and thermal aging". Thesis, Ecole centrale de Nantes, 2018. http://www.theses.fr/2018ECDN0006/document.

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Cette thèse de doctorat s’intéresse à la fatigue des élastomères, et plus particulièrement des caoutchoucs nitrile hydrogénés (sigle HNBR en anglais). Les HNBR sont des élastomères de haute performance,classiquement utilisés pour des applications industrielles à haute température où une bonne résistance chimique aux hydrocarbures est également requise.La thèse est divisée en trois parties principales.En premier lieu, des améliorations majeures pour les expériences de durée de vie en fatigue des élastomères sont proposées. Une approche expérimentale originale permettant le pilotage des essais en contrainte vraie est détaillée.Grâce à cette méthode, la première « vraie »courbe de Wöhler (contrainte vraie en fonction du nombre de cycles) pour des élastomères est tracée. Ensuite, des outils statistiques, issus de la recherche médicale, permettent une analyse probabiliste des résultats présentant une grande dispersion et des durées de vie censurées.Dans un second temps, ces nouveaux outils sont utilisés pour étudier l'effet de la formulation chimique – les taux d’acrylonitrile et d'hydrogénation notamment - sur la résistance en fatigue du HNBR à 120 oC. Ces résultats sont complétés par des expériences de propagation de fissure de fatigue et par une analyse de l'endommagement. Finalement, l'influence du vieillissement thermique sur la résistance en fatigue du HNBR est étudiée ; deux nouveaux essais sont développés : des essais simultanés de vieillissement et de fatigue, et des expériences de fatigue sur des échantillons préalablement vieillis.De plus, la cristallisation sous tension dans le HNBR est pour la première fois étudiée de manière quantitative
The present PhD thesis is devoted to investigation of fatigue in elastomers, andmore particularly of carbon black-filled hydrogenated nitrile butadiene rubber (HNBR).HNBR is a high performance elastomer classically used for high temperature industrial applications, where high resistance to industrial solvents is also required.The thesis is divided into three main parts.First, major improvements of testing procedures utilized in fatigue life testing ofelastomers are proposed. An original method to prescribe the true stress throughout fatigue experiments is developed; it permits to plot the first “true” Wöhler curve, i.e. true stress vs.number of cycles, for elastomers. Then,statistical tools, widely applied in medical research, are adopted for a comprehensive probabilistic analysis of fatigue life results that exhibit high scatter and censored lifetimes.Second, these novel tools are used to investigate the effect of chemical formulation -acrylonitrile content, percent hydrogenation,and of a composite blend - on fatigue resistance of HNBR at the service temperature of 120 oC. In addition to these fatigue life tests,fatigue crack propagation experiments and microscopic fatigue damage analysis are carried out. Third, the influence of thermal aging on fatigue performances of HNBR is investigated.To this end, two additional fatigue life tests are carried out: simultaneous aging and fatigue experiments, and fatigue experiments on preaged samples.Additionally, strain-induced crystallization in HNBR is studied; for the first time, quantitative relationships between crystallization, strain,and stress are established for unfilled HNBR blends
3

Che, Yunxiang, e S3145469@student rmit edu au. "Aging structure life prediction and reliability assessment". RMIT University. SAMME, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20091113.114541.

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Confront with the serious aging problem in aircraft structure field, the profession was tasked to unveil the mysterious in the mechanism of aging. In decades, many endeavours were put into different subjects such as, fatigue and crack calculation, corrosion analysis, reliability evaluation, life prediction, structure monitor and protection, structure repair, etc. In an effort of developing a reasonable model for life prediction and reliability evaluation, a wide range of topics in the field of aging structure reliability are reviewed. Many existing methods and tools are carefully studied to distinguish the advantages, disadvantages and the special application. With consideration of corrosion fatigue life, and based on the data obtained through investigating service status of the aging aircraft, a fuzzy reliability approach is proposed and presented. Initially, the thesis presents the literature review in the field, introducing the well-established theories and analysis tools of reliability and points out how such these methods can be used to assess the life and reliability of aging structure. Meanwhile, some characteristic parameters and distributions, as well as some crucial calculation formulations, procedures for aging aircraft reliability/risk analysis are given. Secondly, mathematical models are established to evaluate the initial crack size and to assess both randomness and fuzziness of the variables, which also successfully work out the probability of survival of existing structures over a time period and predict the operation time under specific reliability requirement. As a practical approach to the reliability of aging aircraft structure, example is presented and evaluated. While conduct the calculation, a few programs based on FORTRAN code are developed to solve the none-linear equation, to work out the multi dimension integration and to simulate the survival probability. The crack life prediction software AFGROW is selected for comparison of the calculation results, which also shows the appropriate accuracy of the established model. As conclusion, the effects of some variables including fuzzy factors on reliability and life of aging aircraft structure are finally discussed. It is apparent that the confines of the model are existing as fact because of the huge assumption of the parameters input and model uncertainties. Suggestions on further prospective research are proposed respectively.
4

Varli, Aziz Egemen. "Fatigue Crack Growth Behaviour Of Aa6013 Aluminum Alloy At Different Aging Conditions". Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/2/12607440/index.pdf.

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The effect of different aging treatments on fatigue crack growth behavior of AA6013 aluminum alloy was investigated. C(T) (Compact Tension) specimens were prepared in L-T and T-L direction for fatigue crack growth tests. Samples were in T651 as received, T42 which is solution heat treated at 538 º
C for 90 minutes, water quenched and aged in room temperature for 96 hours, and one group of samples were overaged at 245 º
C for 12 hours after T42 condition was achieved. Hardness and conductivity measurements were achieved for all conditions after the heat treatments. Fatigue crack growth tests were performed at as received condition T651, T42 and 245 º
C aged samples in laboratory air with sinusoidal loading of stress ratio R=0.1 and at a frequency of 1 Hz. The highest fatigue crack growth resistance is observed for T651 T-L and 245 º
C overaged L-T condition.
5

Avin, Keith Gerard. "Moderators of fatigue: the complexity of interactions". Diss., University of Iowa, 2012. https://ir.uiowa.edu/etd/2815.

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Fatigue is a difficult phenomenon to study because the response can vary based upon task-specific (i.e. contraction type, intensity, position– vs. load-matching and muscle group/joint region) and subject-specific (i.e. sex and age) variables. Although numerous investigations have provided insight into muscle fatigue, further efforts were needed to better characterize the influence of age, sex, joint/muscle group, contraction type, and task complexity have upon fatigue. The primary purpose of this series of three studies was to identify and characterize the influences of potential moderating variables (i.e., sex, joint, age, contraction type, and task complexity) upon fatigue resistance during voluntary muscle contraction fatigue tasks through both empirical (systematic review and meta-analysis) and experimental methods. In general, women demonstrated either the same or better fatigue resistance than men (men never better), the sex advantage was joint specific not systematic, old men were more fatigue resistant than young men, task complexity was not an influential factor and fatigue differences were more readily apparent under isometric conditions. The inclusion of empirical and experimental methods helped clarify the driving factors of localized muscle fatigue. This in turn will better direct future study design and power for mechanistic, training and performance response studies.
6

Ali, Mahdi. "Study of the bitumen aging effects on the rheological properties and fatigue behavior". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/16255/.

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A study of bitumen aging effects on the rheological properties and fatigue behavior is carried out on five polymer modified bitumen provided by an oil company. Dynamic Shear Rheometer (DSR), is used to perform advanced experimental investigation. It allows practicing frequency sweep tests, fatigue tests and time sweep tests. Polymer modified bitumen with different percentage of SBS with or without the presence of crumb rubber are tested before and after short and long aging processes. Master curves were generated based on frequency sweep tests data, they are studied, and a comparison was conducted between each bitumen before and after aging. In this thesis, the DSR is presented, as well as the testing procedure and the tested materials. A fatigue life analysis of the results, based on the use of two different criteria, the first criterion is classically used: it consists in defining the failure as a 50% loss of the initial stiffness. The other criteria based on dissipated energy data. This thesis provides results which show the effects of several factors on fatigue and healing response such as bitumen type, ageing, the presence of rubber and polymer modification.
7

Yassierli, Yassierli. "Muscle Fatigue during Isometric and Dynamic Efforts in Shoulder Abduction and Torso Extension: Age Effects and Alternative Electromyographic Measures". Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/29509.

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Aging has been associated with numerous changes in the neuromuscular system. Age effects on muscular performance, however, have been addressed only in limited contexts in earlier research. The present work was conducted primarily to investigate age-related effects on muscle capacity (fatigue and endurance) during isometric and dynamic efforts. This work was also motivated by current theories on muscle fatigue as a potential risk factor for musculoskeletal disorders and recent demographic projections indicating a substantial increase of older adults in the working population. Four main experiments were conducted to investigate development of muscle fatigue during isometric and intermittent efforts in shoulder abduction and torso extension at different contraction levels. Two age groups were involved (n=24 in each), representing the beginning and end of working life. Findings from this study demonstrated that the older group exhibited slower progressions of fatigue, though the age effect was more consistent for the shoulder than the torso muscles. This implied a muscle dependency of the influence of age on fatigue. Several interaction effects of age and effort level were also observed, suggesting that both task and individual factors should be considered simultaneously in job design. The present investigation also sought to develop alternative electromyography (EMG)-based fatigue parameters for low-level isometric and dynamic contractions, two areas in which improvements are needed in the sensitivity and reliability of existing EMG indices. Several alternative EMG indices were introduced, derived from logarithmic transformation of EMG power spectra, fractal analysis, and parameter estimation based on a Poisson distribution. Potential utility of several of these alternative measures was demonstrated for assessment of muscle fatigue.
Ph. D.
8

Cavuoto, Lora Anne. "Evaluating obesity-related differences in upper extremity and trunk muscular capacity". Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/28345.

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Work-related musculoskeletal disorders (WMSDs), particularly overexertion injuries, represent a significant economic burden and involve substantial adverse personal outcomes. Two important contemporary changes in workforce demographics may be associated with an increase in the future incidence and cost of WMSDs. First, more than two-thirds of the US adult population is now either overweight or obese, a doubling of the prevalence of obesity over the past 30 years. Second, there has been a shift toward an older worker population, whose injuries often require more time away from work. Obesity and aging can modify job demands and affect worker capacity in terms of muscular and psychomotor function. However, there is a lack of empirical studies quantifying the work-relevant (or ergonomic) impacts related to task demands, capacities, and their potential imbalance. This research assessed obesity- and age-related differences in physical capacity by measuring localized muscle fatigue, endurance, and the effects of fatigue on psychomotor function. Three experiments were completed, progressing from controlled static to more complex intermittent and functional tasks. The work also examined whether obesity and age effects are modified by workplace/workstation configuration, specifically the extent to which body segment masses need to be supported. With obesity, strength was higher, but endurance time was lower, particularly for the more complex tasks. Interaction effects between obesity and age were seen in only a few measures across the studies and did not indicate a consistent effect. Outcomes of this research can facilitate the development of more effective (i.e., inclusive) guidelines to control WMSD risk and contribute to both proactive and reactive interventions to reduce excessive exposures to physical risk factors. Overall, the research goal is to help ensure that ergonomic guidelines and practice are appropriate (or are adapted) to accommodate the diverse and changing workforce.
Ph. D.
9

Colas, Damien. "Approche multi-échelle du vieillissement et du comportement cyclique dans le tantale". Phd thesis, Ecole Nationale Supérieure des Mines de Paris, 2013. http://pastel.archives-ouvertes.fr/pastel-00957882.

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La conception de structures complexes requiert une connaissance exhaustive des matériaux utilisés à la fois au niveau macroscopique et au niveau microscopique. Dans le cas du tantale, peu d'études ont été menées pour des sollicitations cycliques et pour l'influence du vieillissement (au sens de la diffusion des atomes interstitiels vers les dislocations) sur le comportement macroscopique et sur les champs locaux de déformation. Afin de mieux comprendre les mécanismes microstructuraux régissant la déformation, cette étude mène de front des essais avec un suivi de déformation à l'échelle locale couplés à une modélisation adaptée, autorisant la prise en compte explicite de la microstructure.Dans un premier volet, une étude macroscopique du vieillissement et du comportement cyclique du tantale est présentée. Plusieurs techniques expérimentales ont été utilisées, mettant en évidence la propagation d'une bande de localisation de la déformation lors de l'entrée en plasticité. En parallèle, un modèle phénoménologique EKMC (de Estrin, Kubin et McCormick) rendant compte du comportement macroscopique (notamment du pic de traction dû au vieillissement statique) a été identifié ; permettant ensuite des investigations numériques sur les manifestations de la localisation de la déformation.Ensuite, l'étude a été poursuivie à l'échelle locale à la fois expérimentalement et numériquement. Pour ce faire, des matrices micrométriques de plots en nickel ont été déposées à la surface d'un échantillon. Les images sucessives autorisent le calcul des cartes de déformation expérimentales lors d'un essai de traction interrompu. La modélisation explicite de la microstructure a été rendue possible par la génération d'agrégats polycristallins spécifiques avec des conditions de surface libre. L'étude de l'influence de la prise en compte du vieillissement sur l'hétérogénéité des champs locaux de déformation a permis de confronter ces derniers avec les champs expérimentaux.Enfin, une étude multi-échelles du comportement en fatigue a été effectuée. Un essai de fatigue interrompu avec observations microscopiques et construction de cartes de déformation a été réalisé. L'hétérogénéité de déformation locale a ainsi été identifiée et quantifiée, jusqu'à l'amorçage de fissures. Une simulation d'une sollicitation équivalente a été réalisée sur un agrégat polycristallin, permettant la comparaison directe des champs locaux de surface. Des investigations approfondies ont été menées sur l'agrégat pour mettre en place un critère d'amorçage basé sur des grandeurs physiques en accord avec l'expérience.
10

Bisson, Etienne. "Influence of Neuromuscular Fatigue of the Lower Limb on Postural Control and Associated Central Processes in Young and Older Adults". Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23612.

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This thesis investigates the differential effects of muscle fatigue on center of pressure (COP) sway and associated central processes (attentional demands and sensory re-weighting) in older compared with young adults. More specifically, we first sought to determine whether the effect of muscle fatigue on unipedal stance was greater during a dual-task in older versus young adults, and second, to determine whether the effect of muscle fatigue on bipedal stance was greater in a condition with less reliable proprioceptive information in older versus young adults. Our main results show that with different muscle groups fatigued (ankle or hip) and postural tasks with varying difficulty (unipedal stance or bipedal stance on compliant surface), young adults increased their COP sway displacement and velocity with muscle fatigue, but not the associated attentional demands. When the central nervous system needed to increase the weight of the vestibular inputs due to sensory information being less reliable at the ankle joints from standing on a compliant surface (peripheral somatosensory information), COP sway displacement and velocity in young adults were greater with ankle muscle fatigue. We also found that healthy older adults were able to compensate for muscle fatigue just as well as young adults when visual information was available during a unipedal stance or when visual information was not available during a bipedal stance on a firm surface. However, when standing on a compliant surface, older adults showed a greater increase in COP sway displacement compared to young adults and increased attentional demands when visual information was not available during a bipedal stance. Our results suggest that healthy young and older adults are able to compensate for ankle muscle fatigue to limit postural control alterations during quiet standing under different conditions, and that the extent of postural control alterations largely depends on the tasks performed. The compensation strategies may be less efficient for older adults with less reliable proprioceptive information and without vision. Thus, a frailer group of older adults, with already reduced proprioception and/or reduced vision could possibly have more difficulty to efficiently use the same compensation strategies, and may be more at risk of falling when fatigued.
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Libri sul tema "Fatigue aging":

1

Energy Institute (Great Britain). Technical Team. Guidelines on fatigue life of aging pressure vessels. London: Energy Institute, 2019.

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2

N, Atluri Satya, Sampath S. G, Tong Pin, Georgia Institute of Technology. Center for Computational Mechanics., Transportation Systems Center e International Symposium on Structural Integrity of Aging Airplanes (1990 : Atlanta, Ga.), a cura di. Structural integrity of aging airplanes. Berlin: Springer-Verlag, 1991.

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3

Shallenberger, Frank. Bursting with energy. 2a ed. Laguna Beach,CA: Basic Health Publications, 2007.

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4

E, Harris Charles, e Langley Research Center, a cura di. The second joint NASA/FAA/DOD conference on aging aircraft. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1999.

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5

Office, General Accounting. Aging aircraft: FAA needs comprehensive plan to coordinate government and industry actions : report to the Secretary of Transportation. Washington, D.C: U.S. General Accounting Office, 1989.

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6

International Workshop on Structural Integrity of Aging Airplanes (1992 Atlanta, Ga.). Durability of metal aircraft structures: Proceedings of the International Workshop on Structural Integrity of Aging Airplanes, March 31-April 2, Atlanta. A cura di Atluri Satya N. Atlanta, Ga: Atlanta Technology Publications, 1992.

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7

Center, Langley Research, a cura di. Materials research for High Speed Civil Transport and generic hypersonics: Adhesive durability. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1995.

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8

Bundesanstalt für Arbeitsschutz und Arbeitsmedizin (Germany), a cura di. Cognitive changes due to aging and fatigue as revealed in the electrical brain activity =: Alters- und Ermüdungseinflüsse auf die hirnelektrische Aktivität : Symposium vom 7./8. Mai 1998 in Dortmund. Bremerhaven: Wirtschaftsverlag NW, 1999.

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9

Winter, Ruth. Vitamin E: Your protection against exercise fatigue, weakened immunity, heart disease, cancer, aging, diabetic damage, environmental toxins. New York: Three Rivers Press, 1998.

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Stephens, Joseph R. Thermal aging effects in refractory metal alloys. [Cleveland, Ohio: National Aeronautics and Space Administration, Lewis Research Center, 1986.

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Più fonti

Capitoli di libri sul tema "Fatigue aging":

1

Furchtgott, Ernest. "Sleep and Fatigue". In Aging and Human Motivation, 41–64. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4757-4463-7_3.

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Balducci, Lodovico. "Anemia, Fatigue and Aging". In Management of Hematological Cancer in Older People, 35–48. London: Springer London, 2014. http://dx.doi.org/10.1007/978-1-4471-2837-3_2.

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Mendoza-Ruvalcaba, Neyda Ma, Sofia von Humboldt, María Elena Flores-Villavicencio e Irma Fabiola Díaz-García. "Psychological Fatigue". In Encyclopedia of Gerontology and Population Aging, 1–5. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-69892-2_85-1.

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Mendoza-Ruvalcaba, Neyda Ma, Sofia von Humboldt, María Elena Flores-Villavicencio e Irma Fabiola Díaz-García. "Psychological Fatigue". In Encyclopedia of Gerontology and Population Aging, 4031–35. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-22009-9_85.

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Koyama, Motomichi, Hiroshi Noguchi e Kaneaki Tsuzaki. "Microstructural Crack Tip Plasticity Controlling Small Fatigue Crack Growth". In The Plaston Concept, 213–34. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-7715-1_10.

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Abstract (sommario):
AbstractIn this chapter, we present a metallurgical–mechanical mechanism-based strategy for the design of fatigue-resistant metals. Specifically, we elucidate the importance of the metallurgical microstructure in a mechanical singular field (crack tip). The fatigue crack growth resistance is controlled through the crack tip “plasticity”, and the effect of the associated microstructure becomes significant when the crack is “small (or short)”. More importantly, the resistance to small crack growth determines a major portion of fatigue life and strength. Therefore, the microstructural crack tip plasticity is a key breakthrough to the development of fatigue-resistant metals. As successful examples of this concept, we introduce the effects of grain refinement, martensitic transformation, strain aging, dislocation planarity enhancement, and microstructure heterogeneity on small fatigue crack growths.
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Woo, Chang Su, e Wan Doo Kim. "Fatigue Life Prediction of Heat-Aging Vulcanized Natural Rubber". In Advanced Nondestructive Evaluation I, 518–21. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-412-x.518.

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Faulkner, John A., Susan V. Brooks e Eileen Zerba. "Skeletal Muscle Weakness and Fatigue in Old Age: Underlying Mechanisms". In Special Focus on the Biology of Aging, 147–66. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-662-38445-9_9.

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Jeevi, G., R. Karthikeyan, Nalini Ranganathan, M. Abdul Kader e Sanjay K. Nayak. "Fatigue Life Prediction of Bio-composites Subjected to Environmental Aging". In Aging Effects on Natural Fiber-Reinforced Polymer Composites, 219–36. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8360-2_12.

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Horst, Peter. "Widespread Fatigue Damage – An Issue for Aging and New Aircraft". In Fracture and Damage Mechanics V, 1–8. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-413-8.1.

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Soltész, Uwe. "Fracture, Fatigue and Aging Behavior of Carbon Fibre Reinforced Plastics". In Materials Sciences and Implant Orthopedic Surgery, 355–64. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4474-9_27.

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Atti di convegni sul tema "Fatigue aging":

1

Green, Jr., Robert E. "Nondestructive evaluation of thick-composite fatigue damage". In Nondestructive Evaluation of Aging Infrastructure, a cura di Richard B. Mignogna. SPIE, 1995. http://dx.doi.org/10.1117/12.212545.

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Fleming, Marvin F., S. Hersh e Steven B. Chase. "Advanced fatigue-crack detection system in steel bridges". In Nondestructive Evaluation of Aging Infrastructure, a cura di Steven B. Chase. SPIE, 1995. http://dx.doi.org/10.1117/12.209775.

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Mahadevan, Sankaran, Pan Shi e Ruoxue Zhang. "Corrosion Fatigue Reliability of Aging Structures". In Structures Congress 2001. Reston, VA: American Society of Civil Engineers, 2001. http://dx.doi.org/10.1061/40558(2001)20.

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Ichinose, Kensuke, Kiyoshi Taniuchi, Yoshimi Kosaka e Katsumi Fukuda. "Detection of fatigue damage zone by visualization". In Nondestructive Evaluation Techniques for Aging Infrastructures & Manufacturing, a cura di George Y. Baaklini, Carol A. Nove e Eric S. Boltz. SPIE, 1999. http://dx.doi.org/10.1117/12.339864.

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Matikas, Theodore E. "Low-cycle fatigue/high-cycle fatigue (LCF/HCF) interaction studies using a 10- to 40-kHz HCF loading device". In Nondestructive Evaluation Techniques for Aging Infrastructures & Manufacturing, a cura di George Y. Baaklini, Carol A. Nove e Eric S. Boltz. SPIE, 1999. http://dx.doi.org/10.1117/12.339837.

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Matikas, Theodore E., Eric B. Shell e Perikles D. Nicolaou. "Characterization of fretting fatigue damage using nondestructive approaches". In Nondestructive Evaluation Techniques for Aging Infrastructures & Manufacturing, a cura di George Y. Baaklini, Carol A. Nove e Eric S. Boltz. SPIE, 1999. http://dx.doi.org/10.1117/12.339835.

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Rokhlin, Stanislov I., B. Zoofan, J. Y. Kim e W. Dai. "Nondestructive characterization of corrosion damage and fatigue life". In Nondestructive Evaluation Techniques for Aging Infrastructures & Manufacturing, a cura di Ajit K. Mal. SPIE, 1999. http://dx.doi.org/10.1117/12.339909.

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Szolwinski, M., e T. Farris. "Fretting fatigue crack initiation - Aging aircraft concerns". In 35th Structures, Structural Dynamics, and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1994. http://dx.doi.org/10.2514/6.1994-1591.

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Kariya, Akemi, Yoshio Fujimura, Naoshi Isaka, Katsuhiko Osaki, Masako Morita e Masao Yamauchi. "Frailty Index Study: A Challenge Study to Quantify Fatigue". In The European Conference on Aging & Gerontology 2023. The International Academic Forum(IAFOR), 2023. http://dx.doi.org/10.22492/issn.2435-4937.2023.12.

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Kariya, Akemi, Yoshio Fujimura, Naoshi Isaka, Katsuhiko Osaki, Masako Morita e Masao Yamauchi. "Frailty Index Study: A Challenge Study to Quantify Fatigue". In The European Conference on Aging & Gerontology 2023. The International Academic Forum(IAFOR), 2023. http://dx.doi.org/10.22492/issn.2435-4937.2022.12.

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Rapporti di organizzazioni sul tema "Fatigue aging":

1

Chang, Kuang-Hua, e Zahed Siddique. Reengineering and Fast Manufacturing for Impact-Induced Fatigue and Fracture Problems in Aging Aircrafts. Fort Belvoir, VA: Defense Technical Information Center, gennaio 2006. http://dx.doi.org/10.21236/ada443010.

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Small, Ward, Taylor M. Bryson, Amitesh Maiti, B. William Choi, Dennis C. Freeman, Jeremy M. Lenhardt, James P. Lewicki, Thomas S. Wilson e Eric B. Duoss. Synopsis of Mechanical Aging and Fatigue Testing of Llama50 Ink for Direct-Ink-Write 3D Printing. Office of Scientific and Technical Information (OSTI), marzo 2019. http://dx.doi.org/10.2172/1544974.

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