Academic literature on the topic 'Axial fatigue'

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Journal articles on the topic "Axial fatigue"

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Zhang, Jian Bing, and Xiang Hong Lv. "Fatigue Analysis of the Drill String According to Multiaxial Stress." Advanced Materials Research 418-420 (December 2011): 993–96. http://dx.doi.org/10.4028/www.scientific.net/amr.418-420.993.

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To find out the cause for fatigue failure of a drill string used in oil field drilling, and considering the actual working conditions, axial, radial and circumferential cyclic stresses borne by the drill string in borehole of oil and gas well, fatigue strength of drill string is analyzed based on multi-axial fatigue assessment method. Then the formula to calculate the mean stress of multi-axial load of the drill string is obtained, and the formula serves as a method to calculate multi-axial fatigue life of the drill string, which has been verified through field data. It is realized that multi-
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Kim, J. W., J. H. Kim, V. P. Thompson, and Y. Zhang. "Sliding Contact Fatigue Damage in Layered Ceramic Structures." Journal of Dental Research 86, no. 11 (2007): 1046–50. http://dx.doi.org/10.1177/154405910708601105.

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Porcelain-veneered restorations often chip and fracture from repeated occlusal loading, making fatigue studies relevant. Most fatigue studies are limited to uni-axial loading without sliding motion. We hypothesized that bi-axial loading (contact-load-slide-liftoff, simulating a masticatory cycle), as compared with uni-axial loading, accelerates the fatigue of layered ceramics. Monolithic glass plates were epoxy-joined to polycarbonate substrates as a transparent model for an all-ceramic crown on dentin. Uni-and bi-axial cyclic contact was applied through a hard sphere in water, by means of a m
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Zhou, Yan Fen, Stephen Jerrams, Lin Chen, and Mark Johnson. "The Determination of Multi-Axial Fatigue in Magnetorheological Elastomers Using Bubble Inflation." Advanced Materials Research 875-877 (February 2014): 507–11. http://dx.doi.org/10.4028/www.scientific.net/amr.875-877.507.

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Fatigue life is one of the most important physical characteristic that is investigated by materials engineers and scientists. The high dynamic loading experienced by machine parts necessitates understanding fatigue properties in critical components. Despite this requirement, elastomer fatigue criteria are imperfectly understood and even less is known about fatigue resistance in the emerging range of smart elastomers. In this paper, initial research into the equi-biaxial fatigue behaviour of magnetorheological elastomers (MREs) is described. Physical testing was carried out using a bubble infla
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Raoof, Mohammed. "Axial Fatigue of Multilayered Strands." Journal of Engineering Mechanics 116, no. 10 (1990): 2083–99. http://dx.doi.org/10.1061/(asce)0733-9399(1990)116:10(2083).

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Xue, Hong Qian, E. Bayraktar, and Claude Bathias. "Fatigue Behavior and Damage Mechanism of a Cast Aluminum Alloy in Very High Cycle Regime." Advanced Materials Research 264-265 (June 2011): 706–11. http://dx.doi.org/10.4028/www.scientific.net/amr.264-265.706.

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An improved understanding of fatigue behavior of a cast aluminum alloy (2-AS5U3G-Y35) in very high cycle regime was developed through ultrasonic fatigue test in axial and torsion loading, cyclic loading in axial and torsion at 35 Hz and 20kHz with R=-1 was used respectively to demonstrate the effect of loading condition. S-N curves obtained show that fatigue failure occurred in range of 105 -1010 cycles in axial or torsion loading, the asymptote of S-N curve is inclined gently, but no fatigue limit under torsion and axial loading condition. Fatigue fracture surface shows fatigue crack essentia
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Bao, Xuechun, Li Cheng, Junliang Ding, Xuan Chen, Kaiju Lu, and Wenbin Cui. "The Effect of Microstructure and Axial Tension on Three-Point Bending Fatigue Behavior of TC4 in High Cycle and Very High Cycle Regimes." Materials 13, no. 1 (2019): 68. http://dx.doi.org/10.3390/ma13010068.

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The effects of microstructure and axial tension on the fatigue behavior of TC4 titanium alloy in high cycle (HCF) and very high cycle (VHCF) regimes are discussed in this paper. Ultrasonic three-point bending fatigue tests at 20 kHz were done on a fatigue life range among 105–109 cycles of the alloys with equiaxed, bimodal and Widmanstatten microstructures. Experimental results without axial tension show that three typical shapes of S-N curves clearly present themselves for the three different microstructures. Moreover, the crack initiation sites abruptly shifted from surface to subsurface of
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Manson, S. S., and U. Muralidharan. "FATIGUE LIFE PREDICTION IN BENDING FROM AXIAL FATIGUE INFORMATION." Fatigue & Fracture of Engineering Materials and Structures 9, no. 5 (1987): 357–72. http://dx.doi.org/10.1111/j.1460-2695.1987.tb00462.x.

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Li, Ang, and Chao Zhang. "Numerical modeling on off-axial fatigue behavior and failure characterization of 3D braided composites." Journal of Industrial Textiles 52 (August 2022): 152808372211194. http://dx.doi.org/10.1177/15280837221119410.

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Fatigue is an important factor leading to the structural failure of 3D braided composites during the service. In this paper, a meso-scale finite element analysis (FEA) model based on continuum damage mechanics (CDM) is developed to study the fatigue damage behavior and predict the fatigue life of 3D braided composites subjected to off-axial tension loadings. Stress analysis, failure criteria and material properties degradation scheme in the meso-scale model are implemented by a user-material subroutine UMAT based on ABAQUS/Standard solver. The damage initiation and propagation of 3D braided co
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Nakai, Yoshikazu, Kohei Fujihara, Naoki Sei, and Bok Key Kim. "Fatigue Crack Initiation and Propagation at a Sharp Notch in Zr-Based Bulk Metallic Glass." Materials Science Forum 638-642 (January 2010): 1659–64. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.1659.

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Fatigue strength of notched specimen and smooth specimen of Zr-based bulk metallic glass, Zr55Cu30Ni5Al10, were conducted under either plane-bending or axial-loading. Fatigue notch factor, Kf, for axial-loading was almost equal to the elastic stress concentration factor, Kt, and the value of Kf for plane-bending was 5% lower than the value of Kt. It indicates that the effect of stress gradient around notch root is negligible, and the fatigue limit of notched specimen is determined by the stress at the notch root. On the contrary, the fatigue strength and the fatigue limit were lower for axial-
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Mo, De Feng, Guo Qiu He, Da Fu Liu, and Zheng Yu Zhu. "Fatigue Characteristic and Dislocation Substructure of A356 Casting Alloy under Multi-Axial Cyclic Loadings." Advanced Materials Research 306-307 (August 2011): 489–95. http://dx.doi.org/10.4028/www.scientific.net/amr.306-307.489.

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Mechanical fatigue tests were conducted on specimens of A356-T6 casting alloys under multi-axial cyclic loadings with 5 loading paths (proportional, circular, square, diamond, and ellipse path). Optical microscopy and TEM were used to examine both undeformed and fatigue failure specimens. It is shown that undeformed material has coarse microstructure with low density of dislocation. Under every loading path, cyclic hardening dominates the whole fatigue process. Additional hardening is found in this casting material, but the rate and extent of cyclic hardening and additional hardening are quite
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Dissertations / Theses on the topic "Axial fatigue"

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Poeppelman, Chad M. "Axial and Torsion Fatigue of High Hardness Steels." University of Toledo / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1301599712.

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Slevar, Amy E. "Mechanical fatigue in a magnetically levitated axial blood pump /." Online version of thesis, 2007. http://hdl.handle.net/1850/4893.

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Bulusu, Prashant. "Rolling contact fatigue predictions based on elastic-plastic finite element stress analysis and multiaxial fatigue /." abstract and full text PDF (free order & download UNR users only), 2006. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1437664.

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Thesis (M.S.)--University of Nevada, Reno, 2006.<br>"August, 2006." Includes bibliographical references (leaves 38-45). Library also has microfilm. Ann Arbor, Mich. : ProQuest Information and Learning Company, [2006]. 1 microfilm reel ; 35 mm. Online version available on the World Wide Web.
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Barros, Cainã Bemfica de. "Fatigue and cyclic plasticity of 304L stainless steel under axial, torsional and proportional axial-torsional loading." reponame:Repositório Institucional da UnB, 2018. http://repositorio.unb.br/handle/10482/31953.

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Dissertação (mestrado)—Universidade de Brasília, Faculdade de Tecnologia, Departamento de Engenharia Mecânica, 2018.<br>Submitted by Raquel Almeida (raquel.df13@gmail.com) on 2018-05-07T18:41:32Z No. of bitstreams: 1 2018_CainãBemficadeBarros.pdf: 12251436 bytes, checksum: 876fa05cf00aed82da7e296be39eec5e (MD5)<br>Approved for entry into archive by Raquel Viana (raquelviana@bce.unb.br) on 2018-05-23T11:34:13Z (GMT) No. of bitstreams: 1 2018_CainãBemficadeBarros.pdf: 12251436 bytes, checksum: 876fa05cf00aed82da7e296be39eec5e (MD5)<br>Made available in DSpace on 2018-05-23T11:34:13Z (GMT). No. o
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Busca, Damien. "Identification du comportement de composites en fatigue bi-axiale." Phd thesis, Toulouse, INPT, 2014. http://oatao.univ-toulouse.fr/12145/1/busca.pdf.

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La connaissance du comportement de composites sous un état de contraintes multi-axial reste un enjeu majeur pour l’optimisation du dimensionnement des structures. La machine de fatigue bi-axiale présente au LGP permet de générer un état de contrainte bi-axial par l’utilisation d’éprouvettes cruciformes. La conception des éprouvettes reste un enjeu majeur pour les chercheurs pour répondre aux problèmes spécifiques liés aux matériaux composites. Un nouveau type d’éprouvette cruciforme en composite sera conçu en lien avec les problématiques liées au procédé d’infusion de résine liquide (LRI). Il
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LOUATI, HAMDI. "Etude du comportement en fatigue par chargement axial des revetements bitumeux." Paris, ENSAM, 1995. http://www.theses.fr/1995ENAM0015.

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Ce travail comporte deux developpements. Le premier est la definition et la mise en uvre d'une methode d'essai de fatigue des revetements bitumineux par chargement axial. Le second est la prevision et la validation de l'endommagement couple aux effets thermiques. Le dispositif de commande en deformation imposee presente la difficulte majeure de l'essai de fatigue par chargement axial. Nous avons defini realise et calibre un extensometre fonde sur la technologie des jauges resistives. Le comportement observe des enrobes bitumineux au cours de cette campagne d'essai est analogue a celui obtenu p
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Scott-Emuakpor, Onome Ejaro. "Development of a novel energy-based method for multi-axial fatigue strength assessment." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1196280356.

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Ketcham, Jerod W. "Design, build and test of an axial flow hydrokinetic turbine with fatigue analysis." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/10945/4943.

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CIVINS<br>Approved for public release; distribution is unlimited<br>OpenProp is an open source propeller and turbine design and analysis code that has been in development since 2007 by MIT graduate students under the supervision of Professor Richard Kimball. In order to test the performance predictions of OpenProp for axial flow hydrokinetic turbines, a test fixture was designed and constructed, and a model scale turbine was tested. Tests were conducted in the MIT water tunnel for tip speed ratios ranging from 1.55 to 7.73. Additional code was also written and added to OpenProp in order to imp
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Kraincanic, Ivana. "Analysis of the coupled axial/torsional behaviour of spiral strands, wire ropes and locked coil cables." Thesis, London South Bank University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336370.

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Extensive comparative studies have been undertaken on various theoretical approaches used for analysing spiral strands, in order to identify their appropriate ranges of applicability. Based on the findings of this exercise, a theoretical model is proposed for analysing the coupled axial/torsional response of a stranded wire rope with either an independentwire rope or fibre core. A theoretical model is also proposed for the analysis ofaxial/torsionai coupling of locked coil cables, regarding which, there was previously a . paucity of reliable analytical or experimental information, despite thei
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Vashishth, Deepak. "Fracture of cortical bone under controlled crack propagation and combined axial-torsional fatigue loading." Thesis, Queen Mary, University of London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264997.

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Books on the topic "Axial fatigue"

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1960-, Bonacuse Peter J., United States. National Aeronautics and Space Administration., and U.S. Army Research Laboratory., eds. An axial-torsional, thermomechanical fatigue testing technique. National Aeronautics and Space Administration, 1996.

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1960-, Bonacuse Peter J., United States. National Aeronautics and Space Administration., and U.S. Army Research Laboratory., eds. An axial-torsional, thermomechanical fatigue testing technique. National Aeronautics and Space Administration, 1996.

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1960-, Bonacuse Peter J., United States. National Aeronautics and Space Administration., and U.S. Army Research Laboratory., eds. An axial-torsional, thermomechanical fatigue testing technique. National Aeronautics and Space Administration, 1996.

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Tom, Cordes, Lease Kevin, and Society of Automotive Engineers. Fatigue Design and Evaluation Committee., eds. Multiaxial fatigue of an induction hardened shaft. SAE, 1999.

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Sreeramesh, Kalluri, United States. Army Aviation Research and Technology Activity., and United States. National Aeronautics and Space Administration., eds. Elevated temperature axial and torsional fatigue behavior of Haynes 188. National Aeronautics and Space Administration, 1992.

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Sreeramesh, Kalluri, Bonacuse Peter J. 1960-, and Symposium on Multiaxial Fatigue and Deformation: Testing and Prediction (1999 : Seattle, Wash.), eds. Multiaxial fatigue and deformation: Testing and prediction. ASTM, 2000.

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Mostakhdemin, Mohammad, Iraj Sadegh Amiri, and Ardiyansyah Syahrom. Multi-axial Fatigue of Trabecular Bone with Respect to Normal Walking. Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-287-621-8.

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Sreeramesh, Kalluri, United States. National Aeronautics and Space Administration., and United States. Army Aviation Research and Technology Activity., eds. Results of inphase axial-torsional fatigue experiments on 304 stainless steel. National Aeronautics and Space Administration, 1990.

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Sreeramesh, Kalluri, and United States. National Aeronautics and Space Administration., eds. Results of inphase axial-torsional fatigue experiments on 304 stainless steel. National Aeronautics and Space Administration, 1989.

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Sreeramesh, Kalluri, and United States. National Aeronautics and Space Administration., eds. Results of inphase axial-torsional fatigue experiments on 304 stainless steel. National Aeronautics and Space Administration, 1989.

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Book chapters on the topic "Axial fatigue"

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Lacombe, Alexandra, Yann Landon, Manuel Paredes, Clément Chirol, and Audrey Benaben. "Influence of the Hole Surface Integrity on the Fatigue Strength of an Aluminium Drilled Part." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-70566-4_7.

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AbstractFatigue strengths of aluminium 2024-T351 open-hole specimens drilled by axial and orbital drilling processes are compared. Two drilling diameters (Ø) are studied: 6.35 mm and 9.53 mm. Surface integrity characterization tests are conducted in order to study the link between drilling processes, surface integrity and fatigue life. Fatigue test results show an increase of the fatigue life for specimens drilled by axial drilling for Ø = 9.53 mm and no significant difference in fatigue life between the two drilling processes for Ø = 6.35 mm. Surface integrity results show no impact of the roughness on the fatigue strength but a potential positive influence of the hole microhardness on the fatigue life.
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Garrido-Cumbrera, Marco, Victoria Navarro-Compán, Christine Bundy, et al. "Social Support." In Axial Spondyloarthritis: Patient-Reported Impact in Europe. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-97606-4_8.

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Pattison, Steve J., Martin R. Bache, Steve J. Williams, and Neil Fox. "Multi-Axial Loading Effects in a Nickel-Based Disc Superalloy Subject to Proportional and Non-Proportional Load Paths." In Fatigue of Materials. John Wiley & Sons, Inc., 2010. http://dx.doi.org/10.1002/9781118013373.ch17.

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Garrido-Cumbrera, Marco, Victoria Navarro-Compán, Christine Bundy, et al. "Employment Status and Productivity." In Axial Spondyloarthritis: Patient-Reported Impact in Europe. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-97606-4_11.

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AbstractDue to the pain, fatigue, and loss of mobility associated with their disease, patients with axSpA often struggle to meet the demands of employment, which can lead to higher rates of unemployment, sick leave (absenteeism), and impairment while at work (presenteeism) compared with the general population (Boonen et al. Ann Rheum Dis 69:1123–1128, 2010;Boonen et al. Ann Rheum Dis 60:1033–1039, 2001;; Mau et al. J Rheumatol 32:721–728, 2005; Healey et al. Scand J Rheum 40:34–40, 2011).
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Mostakhdemin, Mohammad, Iraj Sadegh Amiri, and Ardiyansyah Syahrom. "Literature Review Fatigue Analysis in Trabecular Bone." In Multi-axial Fatigue of Trabecular Bone with Respect to Normal Walking. Springer Singapore, 2015. http://dx.doi.org/10.1007/978-981-287-621-8_2.

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Fischersworring, A., G. Hellenthal, and W. Koschel. "The in Service Multi-Axial-Stress Situation in an Uncooled Gas Turbine Blade." In Advances in Fatigue Science and Technology. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2277-8_50.

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Mostakhdemin, Mohammad, Iraj Sadegh Amiri, and Ardiyansyah Syahrom. "Methodology of Fatigue Life Simulation in Trabecular Bone." In Multi-axial Fatigue of Trabecular Bone with Respect to Normal Walking. Springer Singapore, 2015. http://dx.doi.org/10.1007/978-981-287-621-8_3.

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Musalli, Tarek Al, Tesfaye Kebede Ali, and Balasubramanian Esakki. "Fatigue Analysis of Helical Spring Subjected to Multi-axial Load." In Lecture Notes in Mechanical Engineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6619-6_41.

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Abel, Andras. "Comparison of Low Cycle Axial, Rotating and Bending Fatigue of Aluminium Alloys." In Low Cycle Fatigue and Elasto-Plastic Behaviour of Materials. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3459-7_94.

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Brookes, Stephen Peter, Hans Joachim Kühn, Birgit Skrotzki, et al. "Multi-Axial Thermo-Mechanical Fatigue of a Near-Gamma TiAl-Alloy." In Advanced Materials Research. Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/3-908454-01-8.283.

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Conference papers on the topic "Axial fatigue"

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Shi, Jinlei, Aiguo Zhou, Tao Dong, Yi Ma, and Shiwen Zhao. "Bi-axial fatigue test method for ultra-large wind turbine blade based on Tug Fatigue Testing system." In 2024 24th International Conference on Control, Automation and Systems (ICCAS). IEEE, 2024. https://doi.org/10.23919/iccas63016.2024.10773217.

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Lua, Jim, Nam Phan, Eugene Fang, and Anisur Rahman. "A Combined Discrete and Continuum Fatigue Damage Characterization of a Hybrid Composite Flexbeam." In Vertical Flight Society 72nd Annual Forum & Technology Display. The Vertical Flight Society, 2016. http://dx.doi.org/10.4050/f-0072-2016-11541.

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Strength and life prediction of a nonlinear tapered hybrid composite flexbeam under combined axial tension and bending is a challenging problem due to the presence of a complex geometry, a hybrid composite material system with a combination of glass/epoxy and graphite/epoxy composites, and a variable thickness profile along the beam longitudinal direction. A hybrid approach based on the combination of discrete crack network (DCN) and continuum damage mechanics (CDM) is applied for fatigue damage prediction under pure bending and bending with axial loading. Abaqus solid shell elements (SC8R) wi
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French, David N. "Circumferential Cracking and Thermal Fatigue in Fossil Fired Boilers." In CORROSION 1988. NACE International, 1988. https://doi.org/10.5006/c1988-88133.

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Abstract Fossil fuels contain both hydrogen and carbon, and most contain measurable amounts of sulfur. When burned with less oxygen than required for complete combustion, conditions are said to be "off-stoichiometric" or "reducing." Some of the sulfur may then be hydrogen sulfide. When reducing conditions exist along a furnace wall, the normal protective iron-oxide scale will be replaced in part by a porous, non-protective sulfide scale. Corrosion deposits contain a low-melting-temperature species, sulfides (as determined by sulfur prints), and free carbon. The characteristics of reducing-cond
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Zimerman, Z., and H. S. Reemsnyder. "Axial Corrosion Fatigue of Wire Rope." In Offshore Technology Conference. Offshore Technology Conference, 1985. http://dx.doi.org/10.4043/5027-ms.

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Zarka, Joseph, and Habib Karaouni. "Fatigue During Multi-Axial Random Loadings." In 10th International Conference on Nuclear Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/icone10-22027.

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During classical analysis, some special methods to extract and to count the cycles from the random stress path (very often, the Rainflow method) are used and it is needed to cumulate “damage” based on some S-N diagrams and the linear Miner-Palmgreen rule or some more elaborated non linear rules. The “damage” factor (scalar or tensor) is still the object of many researches; it is impossible to measure it during the whole loading path, even if, before failure, some slight changes on the elastic properties may be experimentally detected. Moreover, the representations of the loading and the counti
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Leser, Christoph, Lokesh Juneja, Surot Thangjitham, and Norman E. Dowling. "On Multi-axial Random Fatigue Load Modeling." In International Congress & Exposition. SAE International, 1998. http://dx.doi.org/10.4271/980696.

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Gunness, Peter D. "Multi-Axial Fatigue Correlated Time History Regeneration." In International Congress & Exposition. SAE International, 1994. http://dx.doi.org/10.4271/940493.

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Jha, Deepak K., and Anuradha Banerjee. "Cohesive Model in Prediction of Multi-Axial Fatigue." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-40353.

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A fatigue failure model for life assessment of a structure that incorporates the stress-state dependence and irreversible nature of fatigue damage is presented. In the frame work of cohesive zone model, a stress state dependent traction separation law for plane strain is taken to represent an undamaged ferritic steel. The evolution of damage has two additional fatigue parameters: a stress and a length parameter. Initially a parametric study is done to show that the model is able to reproduce a typical uniaxial fatigue response to stress based cyclic load, that of a stress-life curve and reduct
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Scott-Emuakpor, Onome E., Tommy George, Casey M. Holycross, Joseph A. Beck, and Charles J. Cross. "Regression Study to Standardize Piezoelectric Axial Fatigue Testing." In 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. American Institute of Aeronautics and Astronautics, 2015. http://dx.doi.org/10.2514/6.2015-0891.

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QIAO, YAO, ANTINIO ALESSANDRO DELEO, KUOTIAN LIAO, and MARCO SALVIATO. "Multi-axial Fatigue Behavior of Notched Composite Structures." In American Society for Composites 2018. DEStech Publications, Inc., 2018. http://dx.doi.org/10.12783/asc33/25993.

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Reports on the topic "Axial fatigue"

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Bonacuse, Peter J. Axial-Torsional Fatigue: A Study of Tubular Specimen Thickness Effects. Defense Technical Information Center, 1990. http://dx.doi.org/10.21236/ada231725.

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Riveros, Guillermo, Hussam Mahmoud, and Santiago Lopez. Multiaxial fatigue strength of structural bolts under combined cyclic axial and shear demands. Engineer Research and Development Center (U.S.), 2019. http://dx.doi.org/10.21079/11681/33270.

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Chell. PR-015-063513-R01 Evaluating Failure Susceptibility Due to Axial Cracks in Pressurized Line Pipe. Pipeline Research Council International, Inc. (PRCI), 2008. http://dx.doi.org/10.55274/r0010971.

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A best estimate methodology based on elastic-plastic fracture mechanics technology was developed that uses the cract tip driving force parameter to support the remaining fatigue life calculations. Development of this technology is facilitated by finite element analysis.
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Dinovitzer, Aaron, Sanjay Tiku, and Amin Eshraghi. PR-214-153739-R01 ERW Fatigue Life Integrity Management Improvement-Phase III. Pipeline Research Council International, Inc. (PRCI), 2019. http://dx.doi.org/10.55274/r0011574.

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While the general fracture mechanics methodology for calculating fatigue lives is well documented and validated, its application in the definition of pipeline system fatigue lives have differed from field experience. The source and magnitude of the conservatism inherent in the calculated fatigue life estimates are a concern when establishing integrity management programs. Of particular interest, are the fatigue life estimates used in the integrity management programs for Electric resistance welding (ERW) pipeline systems that are primarily concerned with pipe wall anomalies oriented along the
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Underwood, J. H., and A. P. Parker. Fatigue Life Analysis and Tests for Thick-Walled Cyclinders Including Effects of Overstrain and Axial Grooves. Defense Technical Information Center, 1994. http://dx.doi.org/10.21236/ada290931.

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Shim, D. J., Gery Wilkowski, Mohammed Uddin, Sureshkumar Kalyanam, and P. Mincer. PR-276-094509-R01 Develop Fracture Initiation Criteria for High-Strength Steel Line Pipe Phase II. Pipeline Research Council International, Inc. (PRCI), 2013. http://dx.doi.org/10.55274/r0010072.

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This report summarizes the major findings from a PRCI Project on developing fracture initiation criteria for axial flaws (both through-wall and surface flaws) in high-strength line-pipe materials. This work was originally done on the basis to see if improvements were needed for higher-grade steels, but interestingly there were several outcomes that affect predictions for all piping steels. One of the outcomes of this work is a new correlation between Charpy USE and J-R curve for high-strength materials. Although it is based on limited data, it was demonstrated that there is significant differe
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Arumugam, Udayansankar, Pablo Cazenave, and Ming Gao. PR-328-133702-R01 Study of the Mechanism for Cracking in Dents in a Crude Oil Pipeline. Pipeline Research Council International, Inc. (PRCI), 2019. http://dx.doi.org/10.55274/r0011556.

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Phase one report: Crack fields (colonies) in dents are often observed in liquid pipe lines. Because of their colonial appearance, these cracks in dents are often thought to be associated with stress corrosion cracking (SCC). However, a recent full-scale dent fatigue testing under a PRCI mechanical damage program showed that crack colonies in dents can be produced by fatigue. This observation facilitated PRCI to launch a further study of the cracking mechanism in dents using samples extracted from a liquid pipeline. A total of 6 pipe samples containing dent with crack/metal loss were investigat
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Leis and Scott. L51643 Development and Validation of a Ductile Flaw Growth Analysis for Gas Transmission Line Pipe. Pipeline Research Council International, Inc. (PRCI), 1991. http://dx.doi.org/10.55274/r0010095.

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Hydrostatic testing is widely used to demonstrate pipe-line integrity. The test has been used to validate the maximum allowable operating pressure (MAOP) of lines being commissioned. As existing pipelines age, the test is also being used to revalidate integrity following repairs. Repeated hydrotesting over some interval of time is also being considered as a regulatory measure. Both the initial hydrotest and subsequent repeated hydrotesting introduce the possibility for flaw growth, with low cycle fatigue being an obvious concern. Historically established safe operation points to the adequacy o
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INVESTIGATING FATIGUE MECHANISMS AND CRACK GROWTH IN 20MNTIB STEEL HIGH-STRENGTH BOLTS: AN EXPERIMENTAL AND SIMULATION STUDY. The Hong Kong Institute of Steel Construction, 2023. http://dx.doi.org/10.18057/ijasc.2023.19.4.2.

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In this paper, axial-tensile, constant-amplitude fatigue experiments are performed on M24 high-strength bolts with grade 8.8 fabricated from 20MnTiB steel with a stress ratio (R) of 0.3, and their crack development is simulated. The stress range-fatigue life (S–N) curve is derived by using the experimental results. The fatigue mechanism is then investigated through strain and fractographic analyses. Moreover, the extended finite element method (XFEM) is applied for assessing the fatigue crack propagation behavior of the high-strength bolts. The findings reveal that the 20MnTiB steel bolt exhib
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