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Journal articles on the topic 'Axial fatigue'

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1

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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2

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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3

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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4

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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5

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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6

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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7

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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8

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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9

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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10

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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11

Topper, Timothy H., John J. F. Bonnen, Rebecca P. Kaufman, and David L. DuQuesnay. "OS11W0462 Changes in fatigue damage due to mean stresses and overloads in axial and biaxial fatigue." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2003.2 (2003): _OS11W0462. http://dx.doi.org/10.1299/jsmeatem.2003.2._os11w0462.

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12

Bedaiwi, Mohamed, Ismail Sari, Arane Thavaneswaran, Renise Ayearst, Nigil Haroon, and Robert D. Inman. "Fatigue in Ankylosing Spondylitis and Nonradiographic Axial Spondyloarthritis: Analysis from a Longitudinal Observation Cohort." Journal of Rheumatology 42, no. 12 (2015): 2354–60. http://dx.doi.org/10.3899/jrheum.150463.

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Objective.In this study, we aimed to address the prevalence of fatigue, its associated factors, and the effect of tumor necrosis factor inhibitors (TNFi) on this subgroup of patients in a large axial spondyloarthritis (axSpA) cohort.Methods.The study included 681 patients [ankylosing spondylitis (AS) and nonradiographic axSpA (nr-axSpA)]. The Fatigue Severity Scale (FSS) and the Bath AS Disease Activity Index question 1 (BASDAI Q1) indices were used for fatigue assessment. Severe fatigue was defined as an FSS ≥ 4 or a BASDAI Q1 ≥ 5. Disease activity, function, and quality of life (QoL) measure
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13

Gandiolle, Camille, and Siegfried Fouvry. "Fatigue Stress Ratio Effect on Fretting-Fatigue Crack Nucleation: Comparison between Multi-Axial and Uni-Axial Predictions." Advanced Materials Research 891-892 (March 2014): 903–8. http://dx.doi.org/10.4028/www.scientific.net/amr.891-892.903.

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This research focuses on high cycle fretting fatigue crack nucleation prediction. A plastic steel/steel cylinder/plane contact was investigated keeping constant the normal force and the maximum fatigue stress ratio but varying the fatigue stress ratio (RF=0.6 to 1). The evolution of the crack length as function of the applied fretting tangential force amplitude at 106 cycles allows us to formalize the crack nucleation condition. It shows that the threshold tangential force marking the crack nucleation (i.e. bp_th=0μm) is not affected by the fatigue stress ratio. However an increase of the fati
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14

Luo, Peng, Weixing Yao, Yingyu Wang, and Piao Li. "A survey on fatigue life analysis approaches for metallic notched components under multi-axial loading." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 233, no. 10 (2018): 3870–90. http://dx.doi.org/10.1177/0954410018809838.

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In this paper, several fatigue failure approaches of metallic notched components under multi-axial loading in recent decades are reviewed in detail. They are classified into three categories according to their different fatigue physical mechanisms and hypotheses: nominal stress approach, local stress–strain approach and the theory of critical distance. The accuracy, applicable range and computing complexity of these three different fatigue failure theories of metallic notched specimen under multi-axial fatigue loading are given. It is concluded that theory of critical distance accords with exp
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15

Bemfica, Cainã, Edgar Mamiya, and Fábio Castro. "Axial-torsional fatigue and cyclic deformation of 304L stainless steel at room temperature." MATEC Web of Conferences 300 (2019): 08004. http://dx.doi.org/10.1051/matecconf/201930008004.

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This work investigates the axial-torsional fatigue and cyclic deformation behaviour of 304L stainless steel at room temperature. Four fully reversed strain-controlled loading paths (axial, torsional, proportional axial-torsional, and 90º out-of-phase axial-torsional) and a fully-reversed shear strain-controlled with static axial stress loading were investigated. For axial, torsional, torsional with static stress and few proportional experiments, an initial cyclic softening was followed by secondary hardening related to martensitic transformation. Secondary hardening was not observed for non-pr
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16

Lee, Hyukjae, and Shankar Mall. "Investigation into Tangential Force and Axial Stress Effects on Fretting Fatigue Behavior." Journal of Engineering Materials and Technology 128, no. 2 (2005): 202–9. http://dx.doi.org/10.1115/1.2172624.

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Fretting fatigue behavior of a titanium alloy was investigated using a dual actuator test setup which was capable to apply the pad displacement independent of the applied cyclic load on specimen. Fretting fatigue tests were conducted using this setup with a phase difference between cyclic load on the specimen and tangential force on the fretting pad with cylinder-on-flat contact configuration under partial slip condition. Two axial stress ratios were used. The relative slip range and tangential force range were related to each other and this relationship was not influenced by phase difference,
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17

Ma, Nan, Xin Ling Liu, Zhi Wang Qiu, Yu Huai He, Chun Hu Tao, and Bin Li. "Effect of the Ratio between Tension and Bending Vibration Loads on the Fatigue Behavior and Failure Mode of Titanium Alloy TA11." Advanced Materials Research 898 (February 2014): 27–32. http://dx.doi.org/10.4028/www.scientific.net/amr.898.27.

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This paper studied the effect of the ratio between the axial tensile force and the transversal vibration loads on the fatigue behavior and failure mode of the near alpha titanium alloy TA11, to simulate the service stress state applied on the engine blades, where a large centrifugal force is superimposed with bending vibration loads. The plate-like specimens were used in the fatigue tests by a special testing device which was designed and fabricated in the present research,where the vibration loads were applied by the electro-magnetic exciters. By experiments under various multi-axial fatigue
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18

Li, Dao-Hang, De-Guang Shang, Jin Cui, et al. "Fatigue–oxidation–creep damage model under axial-torsional thermo-mechanical loading." International Journal of Damage Mechanics 29, no. 5 (2019): 810–30. http://dx.doi.org/10.1177/1056789519887217.

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A fatigue–oxidation–creep damage model that can take into account the effect of multiaxial cyclic feature on the damage mechanism is proposed under axial-torsional thermo-mechanical fatigue loading. In the proposed model, the effects of non-proportional additional hardening on fatigue, oxidation, and creep damages are considered, and the variation of oxidation damage under different high temperature loading conditions is also described. Moreover, the intergranular creep damage needs to be equivalent to the transgranular damage before accumulating with the fatigue and oxidation damages. The fat
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19

Nakai, Yoshikazu, Kenichi Nakagawa, and Kohei Mikami. "Effect of Inhomogeneity of Zr-Based Bulk Metallic Glass Plate on Fatigue Strength under Torsion." Materials Science Forum 706-709 (January 2012): 1331–36. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.1331.

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Fatigue tests of Zr-based bulk metallic glass plates were conducted under cyclic-torsion, and the results were compared with those obtained under cyclic-bending and axial-loading. The fatigue strength of axial-loading was lower than that under cyclic-bending because the fatigue strength depends on the cooling rate in the casting process of the material, which is different in the thickness direction. The fatigue strength of plane-bending reflects the strength at the specimen surface while that of axial-loading is determined by the weakest strength in the thickness direction. For cyclic torsion
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20

Luo, Peng, Ming Yu, and Changlong Wen. "A strain energy density field method to predict the life of metallic notched components under multiaxial fatigue loading." Journal of Physics: Conference Series 2686, no. 1 (2024): 012011. http://dx.doi.org/10.1088/1742-6596/2686/1/012011.

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Abstract A method based on strain energy density field (SEDF) has been proposed to predict the angle of fatigue critical points and multi-axial life of the notched parts under multi-axial cyclic loading. The point bearing the maximum strain energy density was taken as the fatigue crack initiation point (fatigue critical point). The influence of stress-strain gradient around the notches were considered via combining SEDF and the critical distance theory (TCD) to calculate the multi-axial notch life. The predictive results indicate that the maximum deviation of the fatigue critical point (FCP) w
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21

Fukami, Mai, Noriyasu Oguma, Benjamin Guennec, Noriyo Horikawa, and Tatsuo Sakai. "Effects of Loading Modes on Fatigue Limit Estimation in Terms of Rotating Bending Fatigue and Rate Process Theory." Applied Sciences 14, no. 2 (2024): 477. http://dx.doi.org/10.3390/app14020477.

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In this study, the influence of loading modes on the fatigue limit estimation of low-to-medium-carbon steels was modeled in terms of the rate process theory proposed by Guennec et al. The axial loading model established in terms of the rate process theory has been shown to be effective for axial loading fatigue, but its applicability to rotating bending fatigue is uncertain. Therefore, low- and medium-carbon steels were tested for rotating bending fatigue, and the fatigue limits obtained were compared with those estimated by the axial loading model established in terms of the rate process theo
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22

Sun, Bao Rui, Yan Zheng, Yong Zhang, and Xiao Wang Fan. "A New Type of Adjusting Coaxiality Structure Design." Advanced Materials Research 983 (June 2014): 436–39. http://dx.doi.org/10.4028/www.scientific.net/amr.983.436.

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This paper analyzes the factors that cause axial fatigue testing machine not coaxiality and influence on test results, put forward the axial fatigue testing machine alignment inspection, and designed a new type concentric structure to adjust not coaxiality.
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23

Song, Gee Wook, Jung Seob Hyun, and Jeong Soo Ha. "Strain Energy Approach for Axial and Torsional Fatigue Life Prediction in Aged NiCrMoV Steels." International Journal of Modern Physics B 17, no. 08n09 (2003): 1665–70. http://dx.doi.org/10.1142/s0217979203019484.

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Axial and torsional low cycle fatigue tests were performed for NiCrMoV steels serviced low-pressure turbine rotor of nuclear power plant. The results were used to evaluate multiaxial fatigue life models including Tresca, von Mises and Brown and Miller's critical plane. The fatigue life predicted by the multiaxial fatigue models didn't correspond with the experimental results in small strain range. We proposed the total strain energy density model to predict torsional fatigue life from axial fatigue data. The total strain energy density model was found to best correlate the experimental data wi
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24

LU, YU-HENG, XUAN YE, LEI HU, FEI LUO, and ZHI-YU XIAO. "ULTRASONIC FATIGUE BEHAVIOR OF A Fe-BASED WARM-COMPACTED POWDER METALLURGY MATERIAL." Modern Physics Letters B 27, no. 19 (2013): 1341027. http://dx.doi.org/10.1142/s0217984913410273.

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Fe -2 Cu -2 Ni -1 Mo -1 C powder metallurgy material was fabricated by die-wall lubricated warm compaction and ultrasonic fatigue test was carried out for as-sintered and heat treatment samples. Material fatigue strength reaches 249 MPa under axial fatigue testing. The sintered material consists of acicular martensite, pearlite, bainite and retained austenite. Tempered martensite is the major phases after heat-treatment. Cleavage plane and dimples is mixed fracture for sample after axial fatigue test. Mechanical properties of after heat treatment materials are improved and fatigue strength rea
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25

Hashimura, Shinji, Tetsuya Torii, Yukio Miyashita, Shigeru Yamanaka, and Genki Hibi. "Fatigue Characteristics of Nonferrous Bolts." Key Engineering Materials 577-578 (September 2013): 417–20. http://dx.doi.org/10.4028/www.scientific.net/kem.577-578.417.

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Fatigue characteristics of bolted joint tightened with a steel bolt have been discussed extensively. However the fatigue characteristics of bolted joint tightened with a nonferrous bolt have not been sufficiently discussed. In this study, two types of fatigue tests, axial fatigue tests and transverse fatigue tests, for nonferrous bolts were conducted. The nonferrous bolts used in this study made of AZ31 and AZX912 magnesium alloy and A5056 aluminum alloy. The results of both fatigue tests showed that the fatigue limits of the A5056 bolt were the highest of all. The fatigue limits of two kinds
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26

Frydrych, Iwona, Nannan Tao, Si Chen, Liping Wang, and Wei Wu. "Tensile-tensile Fatigue Behavior of Multi-axial Warp-knitted Reinforced Composite." Fibres and Textiles in Eastern Europe 26, no. 1(127) (2018): 73–80. http://dx.doi.org/10.5604/01.3001.0010.7800.

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An experimental study was carried out on the fatigue behaviour of multi-axial warp-knitted fabric composites. Composite samples reinforced with multi-axial warp-knitted fabric/matrix were manufactured by the vacuum-assisted resin transfer moulding method. Tensile-tensile fatigue cycling was carried out at different load levels, and S-N curves, tensile stress-strain curve and stiffness degradation of the multi-axial composite samples were obtained. Finally post-fatigue tensile tests were done at a stress level of 75%, at the stages of 1/3N and 2/3N, and the equivalent residual strength and stif
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27

Karr, Ulrike, Bernd Schönbauer, Yusuke Sandaiji, and Herwig Mayer. "Effects of Non-Metallic Inclusions and Mean Stress on Axial and Torsion Very High Cycle Fatigue of SWOSC-V Spring Steel." Metals 12, no. 7 (2022): 1113. http://dx.doi.org/10.3390/met12071113.

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Inclusion-initiated fracture in high-strength spring steel is studied for axial and torsion very high cycle fatigue (VHCF) loading at load ratios of R = −1, 0.1 and 0.35. Ultrasonic S-N tests are performed with SWOSC V steel featuring intentionally increased numbers and sizes of non-metallic inclusions. The fatigue limit for axial and torsion loading is considered the threshold for mode I cracks starting at internal inclusions. The influence of inclusion size and Vickers hardness on cyclic strength is well predicted with Murakami and Endo’s √ area parameter model. In the presence of similarly
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28

Shi, Xin Hong, Jian Yu Zhang, Rui Bao, and Bin Jun Fei. "The Effect of Stress Amplitude on Multi-Axial High-Cycle Fatigue Failure under Constant Amplitude Loading." Key Engineering Materials 417-418 (October 2009): 877–80. http://dx.doi.org/10.4028/www.scientific.net/kem.417-418.877.

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Studies about the effect of stress characteristics on multi-axial high-cycle fatigue of metals are still insufficient. Up to now, little work about the effect of different ratio of stress amplitude has been done on multi-axial fatigue under the same equivalent stress. In this paper, the effect of ratio of stress amplitude, under the same Von-Mises equivalent stress is studied from theory and experiment. The results show that the main factor of multi-axial high-cycle fatigue failure is the maximum principal stress. For proportional loading, fatigue life raises when ratio of stress amplitude inc
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29

Shimamoto, Akira, Do Yeon Hwang, and Tetsuya Nemoto. "Development of Biaxial Servo Controlled Fatigue Testing System." Key Engineering Materials 321-323 (October 2006): 57–62. http://dx.doi.org/10.4028/www.scientific.net/kem.321-323.57.

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Destructive accident sometimes takes place though the equivalent stress is rather low in the viewpoint of strength of materials. The propagation of fatigue cracks under multi-axial stress state and cycling load gives the reason. Fatigue fracture has been considered as one of the most commonly encountered industrial problems that lead to the damage of components in engineering products. In general, the machine structure is always under stress concentration or stress cycles. Moreover, the structure material is usually under two axes or multi-axial stresses instead of uniaxial stress state. It is
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30

Hossain, Md Uzzal, Abul Khair Mohammad Salek, Farzana Khan Shoma, Md Tanzim Hasan Refat, Sydur Rahman, and Palash Nag. "Assessment of Association between Fatigue and Disease Activity in Axial Spondyloarthritis." Scholars Journal of Applied Medical Sciences 12, no. 04 (2024): 368–73. http://dx.doi.org/10.36347/sjams.2024.v12i04.008.

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Introduction: Spondyloarthritis (SpA) is a common disease characterised by chronic inflammatory pain and debilitating manifesting itself most often in stiffness. Fatigue is widely regarded as a cardinal manifestation of Axial SpA and is one of the three most frequently reported symptoms alongside pain and stiffness. This study sought to assess the association between fatigue and disease activity in axial spondyloarthritis. Aim of the study: The aim of this study is to assess the association between fatigue and disease activity in axial spondyloarthritis. Methods: This cross-sectional study was
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31

Mesquita, Luciane R., Sheila C. Rahal, Camilo Mesquita Neto, et al. "Development and mechanical properties of a locking T-plate." Pesquisa Veterinária Brasileira 37, no. 5 (2017): 495–501. http://dx.doi.org/10.1590/s0100-736x2017000500012.

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ABSTRACT: This study aimed to develop a locking T-plate and to evaluate its mechanical properties in synthetic models. A titanium 2.7mm T-plate was designed with a shaft containing three locked screw holes and one dynamic compression hole, and a head with two locked screw holes. Forty T-shaped polyurethane blocks, and 20 T-plates were used for mechanical testing. Six bone-plate constructs were tested to failure, three in axial compression and three in cantilever bending. Fourteen bone-plate constructs were tested for failure in fatigue, seven in axial compression and seven in cantilever bendin
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32

Cai, Xiaojing, and Jinquan Xu. "Effective Fatigue Stress and Criterion for High-Cycle Multi-axial Fatigue." Journal of Materials Engineering and Performance 24, no. 1 (2014): 158–66. http://dx.doi.org/10.1007/s11665-014-1309-9.

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33

Campello, Luca, Vivien Denis, Raffaella Sesana, Cristiana Delprete, and Roger Serra. "New Experimental Single-Axis Excitation Set-Up for Multi-Axial Random Fatigue Assessments." Machines 13, no. 7 (2025): 539. https://doi.org/10.3390/machines13070539.

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Fatigue failure, generated by local multi-axial random state stress, frequently occurs in many engineering fields. Therefore, it is customary to perform experimental vibration tests for a structural durability assessment. Over the years, a number of testing methodologies, which differ in terms of the testing machines, specimen geometry, and type of excitation, have been proposed. The aim of this paper is to describe a new testing procedure for random multi-axial fatigue testing. In particular, the paper presents the experimental set-up, the testing procedure, and the data analysis procedure to
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34

Tao, Zhi-Qiang, Xiangnan Pan, Zi-Ling Zhang, Hong Chen, and Li-Xia Li. "Multiaxial Fatigue Lifetime Estimation Based on New Equivalent Strain Energy Damage Model under Variable Amplitude Loading." Crystals 14, no. 9 (2024): 825. http://dx.doi.org/10.3390/cryst14090825.

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The largest normal stress excursion during contiguous turn time instants of the maximum torsional stress is presented as an innovative path-independent fatigue damage quantity upon the critical plane, which is further employed for characterizing fatigue damage under multiaxial loading. Via using the von Mises equivalent stress formula, an axial stress amplitude with equivalent value is proposed, incorporating the largest torsional stress range and largest normal stress excursion upon the critical plane. The influence of non-proportional cyclic hardening is considered within the presented axial
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35

Abdul, Quadir, and Kumar Chaturvedi Sachin. "DESIGN AND DEVELOPMENT OF FULLY REVERSED AXIAL LOADING FATIGUE TESTING MACHINE." International Journal of Advances in Engineering & Scientific Research 1, no. 3 (2014): 08–17. https://doi.org/10.5281/zenodo.10720171.

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<strong>Abstract</strong> <em>From the decades of moving machine elements become more important and<strong> </strong>lifetime approach in fatigue design based on S-N curves establishes for an infinity life where the applied stress cycle is below than endurance limit. After fatigue test in results we got the fatigue failure beyond 10<sup>6</sup> cycles even this test indicates there is no endurance fatigue limit, from the various servo-hydraulic testing machine we got the late results and its very time consuming as well as expensive tests. Reciprocating fatigue testing equipment for laboratory
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36

Tohgo, Keiichiro, Xiao-Jun HE, Hitoshi Ishii, and Kazuro Kageyama. "OS09W0183 Fatigue behavior of CFRP cross-ply laminates under axial cyclic load." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2003.2 (2003): _OS09W0183. http://dx.doi.org/10.1299/jsmeatem.2003.2._os09w0183.

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37

Goodenberger, D. L., and R. I. Stephens. "Fatigue of AZ91E-T6 Cast Magnesium Alloy." Journal of Engineering Materials and Technology 115, no. 4 (1993): 391–97. http://dx.doi.org/10.1115/1.2904236.

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The purpose of this research was to obtain room temperature fatigue behavior of AZ91E-T6 cast magnesium alloy and to determine if commonly used models that depict fatigue behavior are applicable to this cast alloy. Axial strain-controlled fatigue behavior using cylindrical specimens were employed to determine low cycle fatigue behavior with strain ratios R = εmin/εmax = 0, −1, and −2. The conventional log-log total strain low cycle fatigue model properly represented the R = −1 axial fatigue data. Significant mean stress relaxation occurred for all R = 0 and −2 axial fatigue tests. However, for
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Almamoori, M. K., Y. Alizadeh, and M. Abolghasemzadeh. "A Review of Multi-Axial Fatigue Tests." IOP Conference Series: Materials Science and Engineering 1094, no. 1 (2021): 012058. http://dx.doi.org/10.1088/1757-899x/1094/1/012058.

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39

Kossov, V. S., G. M. Volokhov, O. G. Krasnov, M. N. Ovechnikov, A. L. Protopopov, and V. V. Oguenko. "Influence of the axial loads of rolling stock on the contact-fatigue life of rails." Vestnik of the Railway Research Institute 77, no. 3 (2018): 149–56. http://dx.doi.org/10.21780/2223-9731-2018-77-3-149-156.

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Analysis of operational data for defective and highly defective rails showed that up to 25 % is the contact-fatigue defects. In connection with the development of heavy haul traffic on the Russian railways, it is relevant to determine the influence of cars with increased axial loads of 25 and 27 tf on the contact fatigue life of rails. The solution of this problem is set forth in this article. The Brown-Miller model of multi-axial fatigue was used in the calculation. This model is integrated into the Fatigue software system, which is tied to the Marc calculation system through Pat-ran. Since u
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ALANI, M., and M. RAOOF. "Effect of mean axial load on axial fatigue life of spiral strands." International Journal of Fatigue 19, no. 1 (1997): 1–11. http://dx.doi.org/10.1016/s0142-1123(96)00052-7.

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O’Donnell, T. P. "Stress Intensity Factors for Cracks in Conventional S-N Fatigue Specimens." Journal of Pressure Vessel Technology 118, no. 2 (1996): 203–7. http://dx.doi.org/10.1115/1.2842182.

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Stress intensity values for cracks growing in conventional fatigue specimens are determined, with emphasis on the end constraint conditions associated with S-N fatigue testing. Three-dimensional finite element analysis methods are used to analyze thumbnail-shaped cracks in cylindrical geometries. Crack front straightening due to the increased bending introduced as crack growth progresses is included in the models. Because relatively stiff fatigue test machines prevent rotation at the clamped ends of test specimens, uniform axial displacement boundary conditions are imposed. Results for uniform
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He, Xing, Junfeng Chen, Wei Tian, Yuebing Li, and Weiya Jin. "Low Cycle Fatigue Behavior of Steam Generator Tubes under Axial Loading." Materials 11, no. 10 (2018): 1944. http://dx.doi.org/10.3390/ma11101944.

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Compared with the fatigue properties of the material (Inconel Alloy 690), the real fatigue lives of tubes are more meaningful in the fatigue design and assessment of steam generator (SG) tube bundles. However, it is almost impossible to get a satisfactory result by conducting fatigue tests on the tube directly. A tube with a uniform and thin wall easily fails near the clamping ends under cyclic loading due to the stress concentration. In this research, a set-up for fatigue tests of real tubes is proposed to overcome the stress concentration. With the set-up, low cycle fatigue tests were conduc
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Morita, Shigeki, Shingo Tanaka, Nobuyoshi Ohno, Yuji Kawakami, and Takashi Enjoji. "Cyclic Deformation and Fatigue Crack Behavior of Extruded AZ31B Magnesium Alloy." Materials Science Forum 638-642 (January 2010): 3056–61. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.3056.

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Pseudoelastic behaviors were observed in compressive and tensile loading-unloading tests at room temperature. The large anelastic strains were observed in compressive stress-strain hysteresis loops. The fatigue limit of axial load-controlled fatigue test at 107 cycles was 90MPa at room temperature. The deformation twins were observed in the specimen subjected to the higher stress amplitude of fatigue limit and free deformation twins were observed in the specimen subjected to the lower stress amplitude of fatigue limit. Stress-strain hysteresis loops were linear in tensile and compressive phase
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Javadi, Hamid, Walid Jomaa, Elvi Dalgaard, Myriam Brochu, and Philippe Bocher. "Influence of surface residual stresses on the fatigue life and crack propagation behavior of turned Inconel 718 super-alloy." MATEC Web of Conferences 165 (2018): 18004. http://dx.doi.org/10.1051/matecconf/201816518004.

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The effects of surface roughness parameters and residual stresses induced by finish turning on fatigue life and crack propagation behavior of Inconel 718 super-alloy are investigated. A criterion serving as a good indicator of surface quality is also discovered. This is carried out for some specific turning conditions in order to control surface characteristics including surface roughness and the bi-axial state of surface residual stresses and to investigate the effects of these characteristics on fatigue behavior. Rotating bending fatigue (RBF) tests are performed on the machined specimens at
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Fass, Markus, Klaus Störzel, and Jörg Baumgartner. "Evaluation of fatigue strength criteria for thick-walled nodular cast iron components from EN-GJS-400 under multiaxial load." MATEC Web of Conferences 300 (2019): 16001. http://dx.doi.org/10.1051/matecconf/201930016001.

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This paper discusses the quality of common methods for estimating the fatigue strength of EN-GJS-400-18-LT specimens under multiaxial stress. This is particularly important for the lightweight design of wind turbines. Experimental fatigue tests with axial, torsional and combined loads with a load ratio of R = -1 were performed. The results of these fatigue tests are used to validate commonly used multi-axial stress hypotheses. The investigated methods are the von Mises hypothesis, the Findley-criterion, the modified Gough-Pollard method and the critical plane nominal stress hypothesis.
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Cheng, Wangquan (Winston), Shan Shih, John Grace, and Wenke Tu. "Axial Load Effect on Contact Fatigue Life of Cylindrical Roller Bearings." Journal of Tribology 126, no. 2 (2004): 242–47. http://dx.doi.org/10.1115/1.1614823.

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Besides primarily carrying radial load, cylindrical roller bearings with flanges or lips on both inner and outer raceways need also carry axial load in some applications. Because of the axial load, the equivalent dynamic load of the bearing will be increased and the bearing contact fatigue life will be decreased accordingly. The axial load effect on the roller bearing fatigue life had been studied by researchers in the past. Because of different assumptions used in their models, quite different predictions were made in their analysis. This work combines the methods used in the Fernlund-Synek a
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Amjadi, Mohammadreza, and Ali Fatemi. "Multiaxial Fatigue Behavior of High-Density Polyethylene (HDPE) Including Notch Effect: Experiments and Modeling." MATEC Web of Conferences 300 (2019): 05001. http://dx.doi.org/10.1051/matecconf/201930005001.

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High-Density Polyethylene (HDPE) is used in many industries with many applications from automotive industry to biomedical implants. It can be manufactured using different processing techniques including compression molding, injection molding, and blow molding. Multiaxial loading and non-proportionality between different loading sources are inevitable in many applications. It is shown that the common multiaxial fatigue criteria such as von Mises equivalent stress are not able to correlate the multiaxial fatigue data. In this study, multiaxial fatigue behavior of neat HDPE is investigated using
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Inoue, T., R. Nagao, and N. Takeda. "Random non-proportional fatigue tests with planar tri-axial fatigue testing machine." Frattura ed Integrità Strutturale 10, no. 38 (2016): 259.265. http://dx.doi.org/10.3221/igf-esis.38.35.

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Berti, Francesca, Pei-Jiang Wang, Andrea Spagnoli, et al. "Fatigue behavior of Nitinol medical devices under multi-axial non-proportional loads." MATEC Web of Conferences 300 (2019): 12001. http://dx.doi.org/10.1051/matecconf/201930012001.

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Nickel-Titanium alloys (Nitinol) are widely used for biomedical applications. Peripheral stents are almost exclusively composed of Nitinol, as its superelasticity is suited for minimally-invasive insertion and durable effect. After crimping and deployment stents undergo cyclic multi-axial loads imposed by vascular and lower-limb motion (e.g. axial compression, bending, and torsion). This complex mechanical environment could lead to metal fatigue and device fracture, with possible severe consequences (e.g. in-stent restenosis). Standard regulations require experimental verification of stent fat
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Bai, Yunlong, and Haiquan Feng. "Effect of dynamic loading on fatigue performance of popliteal artery stents." Journal of Physics: Conference Series 3043, no. 1 (2025): 012151. https://doi.org/10.1088/1742-6596/3043/1/012151.

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Abstract In endovascular management of Peripheral Arterial Disease (PAD), popliteal artery stents are susceptible to fatigue failure due to dynamic loading caused by lower limb movement. Current research primarily focuses on single loading conditions or blood pressure pulsations, with insufficient systematic investigation of dynamic loading. This study applies axial compression, bending, and torsional loads (frequency: 1 Hz, amplitude referenced to human experimental data) on four commercially available popliteal artery stents (AP, CS, EF, and PU) to model their implantation process using the
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