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Relevant bibliographies by topics / Steel – Fatigue

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Academic literature on the topic 'Steel – Fatigue'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 August 2024

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Journal articles on the topic "Steel – Fatigue"

1

Bhat, Sunil, and Vijay G. Ukadgaonker. "Fatigue Life Enhancement of Welded Steel-Steel Composite during Crack Growth from Weak to Strong Steel: An Experimental Validation." Key Engineering Materials 417-418 (October 2009): 825–28. http://dx.doi.org/10.4028/www.scientific.net/kem.417-418.825.

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Strength mismatch effect across weld interfaces, generated by welding weak and strong steels, influences fatigue and fracture properties of a welded bimetallic composite. Advancing fatigue crack tip in weak parent steel is shielded from the remote load when it reaches near the interface of ultra strong weld steel. Entry of crack tip plasticity into weld steel induces load transfer towards weld which dips crack growth rates thereby enhancing the fatigue life of the composite. A computational model for fatigue life prediction of strength mismatched welded composite under K dominant conditions is validated by experimental work in this paper. Notched bimetallic compact tension specimens, prepared by electron beam welding of weak alloy and strong maraging steels, are subjected to fatigue testing in high cycle regime.

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García-Diez, Ana Isabel, Juan José Galán-Díaz, Manuel Ángel Graña-López, and Mar Toledano-Prados. "Study of the Rotary Bending Fatigue Resistance of 30MnB5, 41CrS4 and 30MnVS6 Steels." Applied Sciences 12, no. 5 (February 24, 2022): 2369. http://dx.doi.org/10.3390/app12052369.

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In this study, a comparative analysis of the fatigue behavior of four types of steels, three of quenching and tempering (30MnB5 subjected to two different heat treatments and 41CrS4) and one microalloyed (30MnVS6), was carried out. The objective of the study is to determine if it is feasible to replace the quenching and tempering steel traditionally used in the manufacture of commercial vehicle axles (30MnB5) with alternative ones with the same composition but with modifications in their microstructure that improve their mechanical properties; a quenched and tempered chromium steel (41CrS4) and one that is microalloyed (30MnVS6). For this, rotary-bending fatigue tests have been carried out on the four types of steels with different stress levels. The fatigue resistance of quenched and tempered steels and microalloyed steel was evaluated using the fit of Basquin’s experimental data. Where possible, the fatigue limit was determined using the maximum likelihood method. It was concluded that, in general, the fatigue resistance of chromium-alloyed steel is higher than that of the reference steel, while the rest have lower fatigue resistance. On the other hand, it was determined that the fatigue limit of microalloyed steel is higher than the reference one and that of the reference steel is higher than that of the other two steels.

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Tohgo, Keiichiro, Tomoya Ohguma, Yoshinobu Shimamura, and Yoshifumi Ojima. "Influence of Strength Level of Steels on Fatigue Strength and Fracture Morphology of Spot Welded Joints." Key Engineering Materials 462-463 (January 2011): 94–99. http://dx.doi.org/10.4028/www.scientific.net/kem.462-463.94.

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In this paper, fatigue tests and finite element analyses are carried out on spot welded joints of mild steel (270MPa class) and ultra-high strength steel (980MPa class) in order to investigate the influence of strength level of base steels on fatigue strength and fracture morphology of spot welded joints. From the fatigue tests the following results are obtained: (1) Fatigue limit of spot welded joints is almost the same in both steels. (2) Fatigue fracture morphology of spot welded joints depends on the load level in the ultra-high strength steel, but not in the mild steel. From discussion based on the finite element analyses the following results are obtained: (3) The fatigue limit of spot welded joints can be predicted by stress intensity factors for a nugget edge, fracture criterion for a mixed mode crack and threshold value for fatigue crack growth in base steel. (4) Plastic deformation around a nugget in spot welded joints strongly affects the fatigue fracture morphology.

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Hu, Zhi Gang, Ping Zhu, Jin Meng, and Xin Min Lai. "Experimental Comparison of Fatigue Characterizations between TRIP and DP Steels." Advanced Materials Research 97-101 (March 2010): 671–74. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.671.

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Advanced high strength steels are increasingly utilized to realize the lightweight of automotive body for economical and ecological considerations. The fatigue durability of notched components is one of the significant evaluation parameters for reasonable material selection. Strain-controlled fatigue experiments of low-alloy TRIP steel and DP steel with 590MPa grade were performed at room temperature in this study. Experimental results indicate that both fatigue life and cyclic stress amplitude of TRIP steel are superior to those of DP steel at the same strain amplitude. Furthermore, local strain-life models of two steels were determined with linear regression method to predict the fatigue life of notched body structures with finite element method. It can be concluded that TRIP steel can provide more excellent potential than DP steel for the lightweight design of notched automotive structures from the viewpoint of fatigue resistance.

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Akiniwa, Yoshiaki, Keisuke Tanaka, and Hidehiko Kimura. "Measurement of Stress Distribution Near Fatigue Crack in Ultra-Fine Grained Steel by Synchrotron Radiation." Materials Science Forum 490-491 (July 2005): 118–23. http://dx.doi.org/10.4028/www.scientific.net/msf.490-491.118.

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Single-edge-notched specimens of ultrafine-grained steel were fatigued. The mean grain size of the steel is about 2 micrometers. Propagation behavior of fatigue cracks was observed with the crack closure. The resistance of the crack propagation of ultrafine-grained steel was larger than that of conventional steels. The crack closure acted as an important role for the larger resistance of fatigue crack propagation. After fatigue tests, stress distribution near the fatigue crack was measured by monochromatic X-rays from synchrotron radiation. The irradiated area was 100 µm x 100 µm. Residual and loading stress distributions ahead of the crack tip and on the crack wake was measured at the maximum stress intensity factor and zero applied load. The stress was determined by sin2ψ method. The measured stress was compared with the value calculated by FEM and the fatigue crack propagation model. The stress distribution at the maximum load and residual stresses agreed very well with the calculated results. The crack opening stress calculated by the residual stresses agreed with the experimental result.

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Sugimoto, Koh Ichi, Junji Tsuruta, and Sung Moo Song. "Fatigue Strength of Formable Ultra High-Strength TRIP-Aided Steels with Bainitic Ferrite Matrix." Key Engineering Materials 345-346 (August 2007): 247–50. http://dx.doi.org/10.4028/www.scientific.net/kem.345-346.247.

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Formable ultra high-strength TRIP-aided steel with bainitic ferrite matrix structure (TBF steel) contributes to a drastic weight reduction and an improvement of crash safety of automobile. In this study, fatigue strength of 0.2%C-1.5%Si-1.5%Mn TBF steels was investigated. High fatigue limit was achieved in TBF steels austempered at 400-450oC, containing a large amount of stable retained austenite. The fatigue limit was linearly related with mobile dislocation density, as well as TRIP effect of retained austenite. When compared to conventional martensitic steel, the TBF steel exhibited lower notch-sensitivity or higher notched fatigue performance. Complex additions of 0.5%Al, 0.05%Nb and 0.2%Mo considerably improved the notched fatigue performance, as well as the smooth fatigue strength. This was associated with the stabilized retained austenite and refined microstructure which suppress fatigue crack initiation and/or propagation.

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Gao, Zhijun, Guangfei Pan, Shuize Wang, Yu Song, Honghui Wu, and Xinping Mao. "Effect of Mg on Inclusion and High Cycle Fatigue Behavior in Titanium Microalloyed Beam Steel." Metals 13, no. 4 (April 13, 2023): 760. http://dx.doi.org/10.3390/met13040760.

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In this paper, the fatigue behavior of titanium microalloyed beam steels were studied by high cycle fatigue test and fatigue crack growth rate test. The effect of Mg addition on the fatigue behavior in titanium microalloyed beam steel was systematically analyzed. According to the experimental results, the addition of magnesium can effectively modify the inclusions by reducing the size of Al2O3 and TiN and promoting the formation of finer complex inclusions with a MgO·Al2O3 core in titanium microalloyed high-strength beam steel. Inclusion number of the experimental steels had far less of an impact on the fatigue characteristic than inclusion size. With the heterogeneous nucleation effect of MgO·Al2O3, the inclusions are refined after the Mg addition. Beam-2 steel’s tensile strength decreased by approximately 54 MPa, while its fatigue strength increased by about 33 MPa, showing favorable fatigue resistance. These findings are essential for optimize the fatigue properties of titanium microalloy steel and promote the development of automobile beam steel with excellent fatigue properties.

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Islam, M. A., and Yo Tomota. "Fatigue Strength and Fracture Mechanisms of IF28 Steels." Advanced Materials Research 15-17 (February 2006): 804–9. http://dx.doi.org/10.4028/www.scientific.net/amr.15-17.804.

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Interstitial free (IF) steels are widely used as thin sheet in the automobile industries because of their many favorable properties. Although, fatigue properties of IF steels do not have significant importance to auto body makers, however, they are very concerned about the tensile and fatigue strength of the steels used for structural purposes to ensure safety of passengers. So, fatigue results of this steel might help researchers to understand the behaviors of high strength steels. In this study cyclic and static properties have been studied at room temperature in the air. Initiative has also been taken to observe the fatigue fracture morphology of this steel. Experimental results show that the fatigue limit is corresponding to about 40% of tensile strength and 80% of the yield strength of this steel. Fractographic observations reveal a mixed type of fracture mode (intergranular and transgranular cracking) fractures.

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Park, Jeong Yeol, Byoung Koo Kim, Dae Geun Nam, and Myung Hyun Kim. "Effect of Nickel Contents on Fatigue Crack Growth Rate and Fracture Toughness for Nickel Alloy Steels." Metals 12, no. 2 (January 18, 2022): 173. http://dx.doi.org/10.3390/met12020173.

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In terms of steel alloying elements, generally, nickel is used as an austenite stabilizing element to increase the toughness of steel. The low temperature materials, such as nickel alloy steels with a nickel content of 3.5% to 9%, stainless steel and Invar, show excellent toughness at low (173 K) and cryogenic (108 K) temperatures. In particular, in the shipbuilding industry, it is mainly used for liquefied ethane and Liquefied Natural Gas (LNG) carriers, and research on low-temperature steels are attracting attention again as regulations on environmental issues are strengthened in recent years. Therefore, in this study, fatigue and fracture performances of nickel alloy steel containing 9% or less among nickel alloy steels are evaluated. Moreover, we assess the Fatigue Ductile to Brittle Transition (FDBT) of nickel alloy steels based on crack tip opening displacement (CTOD). In order to discuss the fatigue and fracture performances of nickel alloy steels, microstructure analysis carried out. As a result, CTOD and Fatigue Crack Growth Rate (FCGR) of nickel alloy steels increases as nickel contents increase. In addition, FDBT of 9% nickel alloy steel is the lowest compared to other nickel alloy steels.

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Plumtree, Alan, and M. M. Mirzazadeh. "Fully Reversed Uniaxial Tension-Compression High Cycle Fatigue Behaviour of Shot-Peened Steels." Key Engineering Materials 488-489 (September 2011): 21–24. http://dx.doi.org/10.4028/www.scientific.net/kem.488-489.21.

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The effect of shot-peening on the uniaxial fatigue behaviour of four engineering steels, heat treated to a similar final hardness was investigated. Forged 0.39%C and 0.72%C steels, a quenched and tempered 0.51%C steel and a 0.50%C powder forged (PF) steel were fatigue tested under fully reversed (R=-1) push-pull loading conditions. Following long life (107) cycling, shot-peening had little effect on the fatigue limit of the 0.39%C and 0.72%C steels whereas the fatigue limit of the PF steel increased 10.4%. Conversely, the fatigue limit of the quenched and tempered steel decreased 12.0% after shot-peening. The results showed that the beneficial effects of shot-peening, such as compressive residual stresses and work hardening, balanced the effects of surface roughness since crack initiation tended to occur below the surface. Microhardness profiles showed that the greatest amount of cyclic softening in the shot-peened regions occurred in the hot rolled steels. Softening was accompanied by a decrease in the depth of surface hardness.

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Dissertations / Theses on the topic "Steel – Fatigue"

1

Joenoes, Ahmad T. "Quantitative analysis of fatigue behavior, fatigue damage and fatigue fracture surfaces of low carbon bainitic steel (SAE 15B13)." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/19671.

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Lester, Charles Gilbert IV. "Analysis of fatigue behavior, fatigue damage and fatigue fracture surfaces of two high strength steels." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42795.

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Building fuel efficient automobiles is increasingly important due to the rising cost of energy. One way to improve fuel efficiency is to reduce the overall automobile weight. Weight reductions using steel components are desirable because of easy integration into existing manufacturing systems. Designing components with Advanced High Strength Steels (AHSS) has allowed for material reductions, while maintaining strength requirements. Two Advanced High Strength steel microstructures investigated in this research utilize different strengthening mechanisms to obtain a desired tensile strength grade of 590MPa. One steel, HR590, utilizes precipitation strengthening to refine the grain size and harden the steel. The other steel, HR590DP, utilizes a dual phase microstructure consisting of hardened martensite constituents in a ferrite matrix. The steels are processed to have the same tensile strength grade, but exhibit different fatigue behavior. The central objective of this research is to characterize and compare the fatigue behavior of these two steels. The results show the dual phase steel work hardens at a low fatigue life. The precipitation strengthened microstructure shows hardening at low strain amplitudes, softening at intermediate strain amplitudes and little to no effect at high strain amplitudes. These different fatigue responses are characterized and quantified in this research. Additionally, observations showing the fracture surfaces and the bulk microstructure are analyzed.

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Hu, Haiyun. "Fatigue and corrosion fatigue crack growth resistance of RQT501 steel." Thesis, University of Sheffield, 1997. http://etheses.whiterose.ac.uk/5999/.

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This project is concerned with the fatigue response of roller quenched and tempered (RQT50I) steels. Three closely related aspects are considered: (i) the relationship between the microstructure and fatigue properties, (ii) the influence of the environment on fatigue properties, (iii) theoretical modelling of fatigue crack growth. The material used is an RQT501 grade steel. Two steels have been chosen: (A) without Mo and V additions, (B) with Mo and V additions. The second condition is chosen to evaluate the role of these elements, as hydrogen traps, on the resistance to corrosion fatigue crack growth. In order to evaluate these effects, tests have been carried out under freely corroding conditions and applied cathodic polarisation (-9 . SO mV/SCE). Metallographic examination has been carried out to evaluate grain size and inclusion distribution, size and morphology. To enable a comparison between short and long fatigue crack growth, smooth shallow hour-glass specimens have been used to study initiation and growth of short fatigue cracks, and compact tension specimens were used to monitor propagation of long fatigue cracks. The fatigue response (S - Nf curve) and fatigue crack growth rate behaviour has been studied in air (5 - 10 biz) and in 3.5%NaCI solution (0.2 Hz) or artificial seawater (0.2 Hz) with an applied stress ratio of 0. I and sinusoidal waveform. The generation and growth behaviour of cracks from smooth hour-glass specimens has been investigated through successive observation using the plastic replication method. Long fatigue crack lengths were measured using a Direct Current Potential Drop (DCPD) technique and monitored via a chart recorder. Based upon the results of these tests a fatigue crack growth model was developed based on non-equilibrium statistical theory incorporating a consideration of the influence of microstructure, e. g. grain boundaries and hydrogen embrittlement. A stochastic theory of corrosion has also been developed for the use with corrosion fatigue test data.

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Hattingh, Daniel Gerhardus. "The fatigue properties of spring steel." Thesis, University of Plymouth, 1998. http://hdl.handle.net/10026.1/2300.

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The nature and scope of this thesis can be divided into three categories, namely stress distribution modelling in coil springs; fatigue and failure analysis, an investigation into measurement of residual stresses and the relation to fatigue life. The operation of springs is directly concerned with the theories of torsion and bending which makes the better understanding of these theories essential. The first part of the thesis is involved with a mathematical evaluation of these theories and a case study of an isolated loop of a coil spring. The mathematical modelling is verified by measuring the strain levels in a coil spring with the aid of strain gauges located at different positions in the coil spring. This evaluation gave a better understanding of the operational stress distribution for input into the two methods currently used by industry for the fatigue testing, namely isolated loop and complete coil spring samples. The remaining part of the thesis revolves around the understanding of the relationship between fatigue life, process effects and residual stresses. The relationship between fatigue failures and process effects was investigated to reveal the mechanism responsible for component fatigue failure in a 55Cr3 automotive suspension spring steel. This was done by subjecting coil springs, withdrawn from different stages of the manufacturing process, to fatigue tests, ensuring that all possible sources of fatigue initiation in this material batch have been identified, including those not dominant in the finished component. Failures prior to shot peen process was mainly surface relate as where those withdrawn after this process were subsurface (inclusions) related. Fractographic analysis, using an XL30 scanning electron microscope, has revealed a number of sources of initiation, which are largely related to mechanical damage and inherent material defects. The results indicate that decreasing defect levels in the material would represent a valid method for enhancing the fatigue response, specifically levels of nonmetallic inclusions and surface mechanical damage, but also that certain manufacturing process stages (cold scragg) are responsible for drop in fatigue life.

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Abdul-Salam, Ezzet Hameed. "Fatigue crack propagation in mild steel." Thesis, University of Salford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.291749.

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Taylor, H. "Fatigue behaviour in high strength steel." Thesis, University of Salford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372146.

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7

Cyril, Nisha S. "Anisotropy and Sulfide Inclusion Effects on Tensile Properties and Fatigue Behavior of Steels." Connect to full text in OhioLINK ETD Center, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=toledo1198808409.

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Thesis (M.S.)--University of Toledo, 2007.
Typescript. "Submitted as partial fulfillment of the requirements for the Master of Science Degree in Mechanical Engineering." "A thesis entitled"--at head of title. Bibliography: leaves 204-209.

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Gaur, Vidit. "Fatigue and corrosion-fatigue in Cr-Mo steel in biaxial tension." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLX027/document.

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Les connecteurs clips utilisés pour assembler les tubes de riser pour le forage pétrolier offshore subissent un chargement cyclique dû aux vagues. 90% de la durée de service est passée en mode connecté, avec une contrainte moyenne élevée, alors que 10% est passé en mode déconnecté, avec une faible contrainte moyenne. Des calculs numériques montrent qu’un chargement cyclique de tension biaxiale en phase prévaut dans la zone critique de la structure. Les effets de contrainte moyenne et de biaxialité doivent tous deux être pris en compte pour un design approprié. Les critères de fatigue multiaxiale de la littérature sont basés sur des données de traction-torsion et ne discriminent pas bien l’influence de la tension biaxiale de celle d’une contrainte moyenne. Un des objectif de cette étude est donc de caractériser séparément ces deux effets.Pour étudier les effets de contrainte moyenne, des essais de fatigue uniaxiale ont été menés avec différents rapports R. Les durées de vie diminuent avec l'augmentation de R, et la limite d'endurance suit la parabole de Gerber. À faible contrainte moyenne et amplitude de contrainte élevée, les fissures s’amorcent en surface, tandis que pour des rapports R élevés et des amplitudes faibles, les fissures s’amorcent à partir de défauts internes ou coupant la surface. Cette transition est analysée à partir de calculs élasto-plastiques des champs de contrainte et déformation autour des défauts. Les fissures internes se propagent sous un faible ΔK indépendant de R, ce qui est attribué à la quasi absence d’effets de fermeture.Pour étudier l'effet de biaxialité, des essais cycliques de tension et pression interne combinées en diverses proportions ont été effectuées à rapport R fixe (0,25). Un taux de biaxialité modéré (B = 0,25 et 0,5) a un effet bénéfique, attribué à un retard de l'amorçage des fissures, alors que la tension équibiaxiale a un effet légèrement nuisible, attribué à un "pseudo effet de taille" (probabilité plus grande qu’une microfissure se propage le long de deux plans principaux équivalents, au lieu d’un seul).De facettes intergranulaires révélatrices de fragilisation par l'hydrogène ont été observées sur les surfaces de rupture. L’évolution de leur fraction avec ΔK et la biaxialité suggèrent une réduction de la vitesse de fissuration à B≤0.5, mais l'effet néfaste de la tension équibiaxiale ne peut être attribué à une accélération de la propagation.Plusieurs des critères de fatigue existants échouent à décrire toutes les données de cette étude. Les critères d'endurance avec un terme linéaire de contrainte moyenne ou de tension hydrostatique ne parviennent pas à prédire les variations de la limite d'endurance. Un nouveau critère de fatigue a été proposé sur la base de la parabole de Gerber. Il décrit bien les effets combinés d'une contrainte moyenne et d’un taux de biaxialité positif.Des essais biaxiaux ont également été effectués dans l’eau salée (3.5% NaCl) pour étudier l'influence de ce milieu sur les durées de vie en fatigue, en corrosion libre et avec une protection cathodique qui amplifie le dégagement d’hydrogène.En corrosion libre, l'eau salée réduit fortement les durées de vie et supprime la limite d'endurance. Cela est dû à la formation de piqûres de corrosion qui favorisent l’amorçage précoce et multiples de fissures. La tension équibiaxiale n’accentue pas l’effet nocif de l'eau salée, malgré des mécanismes de fissuration différents: décohésion fragile transgranulaires en tension uniaxiale, mais principalement intergranulaire en tension biaxiale.La protection cathodique annule l'effet néfaste de l'eau salée pour tous les taux de biaxialité, en dépit d'un net accroissement de la fragilisation par l’hydrogène des joints de grains. Les surfaces de rupture deviennent presque entièrement intergranulaire, tandis qu’à l'air, le taux de rupture intergranulaire ne dépasse pas 45%
The clip connectors used to join the riser tubes for offshore oil drilling undergo cyclic loading due to sea waves. 90% of the service life is spent in the “connected mode” with a high mean stress and 10% in the “disconnected mode” with a lower mean stress. Finite element computations revealed in-phase biaxial tension in the critical areas of the clip connector along with high mean stresses. Thus, both the mean stress effect and the biaxiality effect need to be addressed for proper design of these structures. However, most of the multiaxial fatigue criteria are based on tension-torsion fatigue data and do not discriminate the influence of biaxial tension from that of a mean stress. This study investigates separately these two effects.For investigating the mean stress effect, uniaxial fatigue tests were run on Cr-Mo steel with various R ratios (σmin/σmax). The fatigue lives, as well as the slope of the S-N curves were found to decrease with increasing R, and the endurance limit to follow Gerber’s parabola. At low R ratios and thus relatively high stress ranges, fatigue cracks initiated from the surface, while for high R ratios, and thus low stress ranges, cracks initiated from internal or surface-cutting defects. This transition was analyzed based on elastic-plastic computations of stress-strain fields around the defects. The threshold for internal fatigue crack growth from defects was found to be quite low and independent from the R ratio. This was attributed to a nearly closure-free propagation.To investigate the effect of positive stress biaxiality, combined cyclic tension and internal pressure tests with various proportions of each loading were run on tubular specimens, at fixed R ratio (0.25). Moderate stress biaxialities (B= 0.25 and 0.5) had a beneficial effect on fatigue lives, attributed mainly to a retardation of crack initiation, while equibiaxial tension had a slightly detrimental effect, attributed to a “pseudo size effect” (higher probability for an incipient crack to grow along two possible planes, compared to a single one).Intergranular facets associated with temper and H2 embrittlement were observed on the fracture surfaces. The evolutions of their surface fraction with ΔK and load biaxiality suggested a possible reduction in crack growth rate at moderate biaxialities, but the detrimental effect of equibiaxial tension could not be explained in terms of crack growth rate.Several popular fatigue criteria failed to describe all fatigue data. Endurance criteria that include a linear mean stress term or contain a hydrostatic tension term fail to predict the variations of the endurance limit of this material with the R ratio and biaxiality ratio. Thus, a new fatigue criterion based on Gerber’s parabola was proposed. It captured the evolution of the endurance limit under the combined effects of positive mean stress and biaxiality.Similar tests were run to investigate the influence of salt water (3.5% NaCl) on fatigue lives under two types of test conditions: 1) free corrosion and 2) cathodic protection.In free corrosion, salt water strongly reduced the fatigue lives and suppressed the endurance limit. This was due to the formation of corrosion pits that favor early, multiple crack initiations. The detrimental effect of salt water was not enhanced by equibiaxial tension, which did not modify the size and density of corrosion pits. Fatigue lives in uniaxial and biaxial tension were nearly the same, although the crack growth mechanism was different: transgranular brittle decohesion in uniaxial loading and mostly intergranular in biaxial tension.Cathodic protection cancelled the detrimental effect of salt water for all biaxialities, in spite of a clear enhancement of H-induced embrittlement of the grain boundaries. The fracture surfaces were nearly fully intergranular, irrespective of load biaxialities, while in air the proportion of intergranular fracture was less than 45%

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Mukherjee, Sunit. "Quantitative characterization of void nucleation and growth in HY-100 steels." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/19574.

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Appleton, Richard Joseph. "Corrosion fatigue of a C-Mn steel." Thesis, University of Glasgow, 1985. http://theses.gla.ac.uk/2176/.

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Books on the topic "Steel – Fatigue"

1

Bowman, Mark D., Gongkang Fu, Y. Edward Zhou, Robert J. Connor, and Amol A. Godbole. Fatigue Evaluation of Steel Bridges. Washington, D.C.: Transportation Research Board, 2012. http://dx.doi.org/10.17226/22774.

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A, Almar-Naess, ed. Fatigue handbook: Offshore steel structures. Trondheim: Tapir, 1985.

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Bowman, Mark Douglas. Fatigue evaluation of steel bridges. Washington, D.C: Transportation Research Board, 2012.

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Gupta, A. Fatigue behaviour of offshore structures. Berlin: Springer-Verlag, 1986.

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Moses, F. Fatigue evaluation procedures for steel bridges. Washington, D.C: Transportation Research Board, National Research Council, 1987.

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Abdul-Salam, Ezzet Hameed. Fatigue crack propagation in mild steel. Salford: University of Salford, 1991.

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Taylor, Howard. Fatigue behaviour in high strength steel. Salford: University of Salford, 1986.

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Prager, Martin. Extend low chrome steel fatigue rules. New York, NY: ASME Standards Technology, LLC, 2009.

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Åkesson, B. Fatigue life of riveted steel bridges. Boca Raton, Fla: CRC Press/Balkema, 2010.

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W, Fisher John. Fatigue cracking of steel bridge structures. McLean, Va: U.S. Dept. of Transportation, Federal Highway Administration, Research, Development, and Technology, Turner-Fairbank Highway Research Center, 1990.

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Book chapters on the topic "Steel – Fatigue"

1

Yamada, K. "Fatigue of Steel Plated Structures." In Steel Plated Structures, 203–46. Vienna: Springer Vienna, 1995. http://dx.doi.org/10.1007/978-3-7091-3002-5_4.

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Yan, Bing, Yaoyu Zhu, Cheng Meng, and Zhiyuan Yuanzhou. "Study on Fatigue Performance of Typical Fatigue Detail in Orthotropic Steel Deck." In Lecture Notes in Civil Engineering, 11–17. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-2532-2_2.

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AbstractOrthotropic steel decks (OSDs) are easily subjected to fatigue cracking under the cyclic vehicle loading, and arc notch between diaphragm and U-rib is one of the typical fatigue details. The strain values of three measuring points at arc notch in a steel bridge were monitoring to obtain the stress time histories. Then, fatigue stress amplitudes and fatigue damage degrees were analysed. It was found that this typical fatigue detail was under tension–compression cyclic stress. The maximum stress amplitude appeared at U-rib weld toe, which indicated that fatigue cracks were more prone to propagate on this area, comparison of fatigue damage degrees also corroborated it.

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Aleksić, Vujadin, Bojana Aleksić, Ana Prodanović, and Ljubica Milović. "HSLA Steel - Simulation of Fatigue." In New Technologies, Development and Application III, 314–21. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-46817-0_36.

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Beiss, P. "Iron and steel: Fatigue strength." In Powder Metallurgy Data, 405–47. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/10689123_21.

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Driver, Robert G., Gilbert Y. Grondin, and Colin MacDougall. "Fatigue Research on High-Performance Steels in Canada." In Use and Application of High-Performance Steels for Steel Structures, 45–56. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2005. http://dx.doi.org/10.2749/sed008.045.

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<p>Compared to conventional structural grade steels, high-performance steel (HPS) provides higher strength, improved weldability, greatly enhanced fracture toughness, and comparable ductility, as well as having "weathering" properties. The improved characteristics of HPS are achieved through lower levels of carbon and other elements, in conjunction with advanced steel-making practices using either quenching and tempering or thermo-mechanical controlled processing. All of these properties make HPS highly desirable for bridge applications. Indeed, although its development spans only the past decade, it is rapidly gaining popularity for use in highway bridges and is becoming more widely available. Although many highway bridges have already been put into service in the United States, Canada has yet to implement this technology in bridges. Nevertheless, it is anticipated that the use ofHPS will become common in the Canadian market in the near future.</p>

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Schmiedel, Alexander, Thomas Kirste, Roman Morgenstern, Anja Weidner, and Horst Biermann. "Fatigue Lives and Damage Mechanisms at Elevated Temperatures of Steel 42CrMo4 in the HCF and VHCF Regime." In Multifunctional Ceramic Filter Systems for Metal Melt Filtration, 853–78. Cham: Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-40930-1_34.

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AbstractThis chapter is focused on the fatigue life and damage mechanisms of steel 42CrMo4 in the high cycle fatigue (HCF) and very high cycle fatigue (VHCF) regimes at temperatures up to 773 K. For this purpose, resonance fatigue testing was used at different test frequencies (90 Hz and 20 kHz). The influences of the manufacturing process (wrought or cast condition), as well as the core hardness (various heat treatment conditions), were investigated. Fractographic examinations of the fracture surfaces allowed the analysis of crack-initiating defects. Together with light microscopic observations of the defect distribution, the fatigue mechanisms of the steel 42CrMo4 were investigated at different temperatures (RT, 473 K and 773 K). A short crack model according to Chapetti applied to the present results was used to describe the change in the fatigue damage mechanisms operating at RT/473 K and 773 K, respectively. It is shown that high-temperature fatigue at 773 K was dominated by crack growth, whereas fatigue at RT and 473 K was dominated by crack initiation. These investigations complete the work presented in Chap. 24, in which the influence of nonmetallic inclusions on the ultrasonic fatigue behaviour of steel 42CrMo4 is being analysed at room temperature. The present results provide important insights into the crack-initiating defects and their distributions as they are relevant in typical industrial applications.

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Komloš, K., and B. Babál. "Fatigue Life of Steel Fibre Concretes." In Brittle Matrix Composites 3, 154–63. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3646-4_17.

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Bilir, Ömer G., and Faik Haznedar. "Fatigue Crack Growth in Commercial Steel." In Computational Mechanics ’86, 1397–402. Tokyo: Springer Japan, 1986. http://dx.doi.org/10.1007/978-4-431-68042-0_204.

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Perera, R., S. Gómez, and E. Alarcón. "Fatigue damage modelling of steel structures." In Behaviour of Steel Structures in Seismic Areas, 73–77. London: CRC Press, 2021. http://dx.doi.org/10.1201/9781003211198-11.

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Ma, Rui, Peng Dong, and Zigang Xv. "Analysis on Fatigue Crack of Orthotropic Steel Bridge Decks." In Advances in Frontier Research on Engineering Structures, 287–93. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-8657-4_26.

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AbstractThrough the detection of the steel structure bridge for 7 years, the main distribution of cracks in steel box girder of steel structure bridge was presented. Through the numerical analysis of the steel box girder of steel structure bridge, the stress distribution of the diaphragms was obtained. The result of detection and the numerical analysis was compared, and showed that the cracks mainly appeared in the welding parts and the arc notch of the diaphragms. The cracks at the welding part mainly came from the welding defects. And the cracks at the arc notch of the diaphragms were due to the stress concentration.

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Conference papers on the topic "Steel – Fatigue"

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Ramos, M. S., M. V. Pereira, S. H. Motta, and M. A. Carneiro. "Fatigue Life Extension in a Structural Steel." In SAE Brasil International Conference on Fatigue. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2001. http://dx.doi.org/10.4271/2001-01-4078.

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Sh., Urushadze, Frýba L., Škaloud M., and Zörnerová M. "Fatigue Behaviour of Steel Bridges." In 4th International Conference on Steel & Composite Structures. Singapore: Research Publishing Services, 2010. http://dx.doi.org/10.3850/978-981-08-6218-3_bs-th039.

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Kuhlmann, Ulrike, Simon Bove, Stephanie Breunig, and Karl Drebenstedt. "Fatigue of steel bridges." In 12th international conference on ‘Advances in Steel-Concrete Composite Structures’ - ASCCS 2018. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/asccs2018.2018.7212.

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Highway and railway bridges are exposed to cyclic stressing due to traffic loads and, therefore, have to be evaluated concerning fatigue. In most cases the fatigue evaluation is performed according to Eurocode 3 Part 1-9 on nominal stresses. To apply this nominal stress approach a detail catalogue is required classifying all relevant constructional details in terms of fatigue. Unfortunately, the existing detail catalogue of Eurocode 3 Part 1-9 reflects the state of the art of the 1990s and misses constructional details being important for today’s bridge design. As an example the derivation of a new detail, the so-called lamellae joint, is presented. Furthermore, for two new types of innovative steel bridges, where Eurocode 3 Part 1-9 does not yet specify rules able to evaluate the characteristics of these bridges, research results are shown. These are the thick-plate trough bridges and truss bridges made of thick-walled circular hollow sections (CHS). The paper starts with an overview on the recent Eurocode developments, addressing more specific the fatigue verification according to EN 1993-1-9 and the statistical analysis of fatigue test data. In the following, information is given on the outcome of some recent research projects striving to extend the application range of Eurocode 3 Part 1-9. The final conclusion, in spite of all differences, show a common tendency.

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Mitchell, M. R., Jon G. Flintoff, Mark M. Appleford, and Suresh S. Babu. "Fatigue Behavior of Case Hardened, High Carbon Bainitic Steel." In SAE Brasil International Conference on Fatigue. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2001. http://dx.doi.org/10.4271/2001-01-4080.

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Solin, Jussi, Jouni Alhainen, Esko Arilahti, Tommi Seppänen, and Wolfgang Mayinger. "Particular Fatigue Resistance of Stabilized Stainless Steel: Endurance Limit, Strength and Ductility of Fatigued Steel." In ASME 2019 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/pvp2019-93317.

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Abstract Comprehensive experimental research on fatigue performance of niobium stabilized (type 347) X6CrNiNb1810mod steel has revealed particular features of cyclic performance. This paper reports and discusses on the endurance limit behavior studied by strain controlled HCF tests at room and elevated temperatures. In contrast to carbon steels, stainless steels can tolerate notable amounts of plastic strain and display broad hysteresis loops at and below endurance limit. Together with pronounced secondary hardening, this results to abrupt endurance limit behavior. The modified Miner rule with S-N–curves extrapolated to low amplitudes is generally applicable for carbon steels, but not for stainless. Effectiveness of the endurance limit even with variable amplitude straining was shown for 347 type steel. Extrapolation of ε-N curves beyond a few million cycles is conservative. An increase of temperature decreases, but does not vanish the endurance limit. Another peculiar feature of the studied stainless steel is its superior ductility, which is not affected by partial fatigue ‘damage’. Five LCF tests at 325°C and 0.22 ≤ εa ≤ 0.5% were interrupted beyond the half-life condition (N/N25 ≥ 0.5) at 0.5 ≤ CUF ≤ 0.9. Cyclic straining was directly followed by monotonic pulling to fracture. Surprisingly low correlation between tensile properties and fatigue usage was observed. The ultimate tensile strength was preserved within 10 MPa (2.5%) in all cases. Yield strength and elongation remained practically unchanged by pre-fatigue. This paper provides new experimental results. They are discussed together with earlier observations on the same steel extracted from a pipe, which has been manufactured for use in primary loop of a German NPP.

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Tomaszewski, Tomasz, and Przemysław Strzelecki. "Study of the size effect for non-alloy steels S235JR, S355J2+C and acid-resistant steel 1.4301." In FATIGUE FAILURE AND FRACTURE MECHANICS XXVI: Proceedings of the XXVI Polish National Conference on Fatigue Failure and Fracture Mechanics. Author(s), 2016. http://dx.doi.org/10.1063/1.4965940.

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Jiang, Yanyao, Tianwen Zhao, Xiaogui Wang, and Zengliang Gao. "Multiaxial Fatigue of 16MnR Steel." In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93473.

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Uniaxial, torsion, and axial-torsion fatigue experiments were conducted on a pressure vessel steel, 16MnR, at room temperature. The uniaxial experiments were conducted using solid cylindrical specimens. Axial-torsion experiments employed thin-walled tubular specimens subjected to proportional and nonproportional loading. A critical plane multiaxial fatigue criterion recently developed was found to correlate well with all the experiments conducted for the material. In addition, the fatigue criterion correctly predicted the cracking behavior of the material subjected to different loading paths.

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Colalillo, Ricardo, and Carlos Alberto Nunes Dias. "Parametric Modelling of Steel Car Wheels for Finite Element Virtual Fatigue Tests." In SAE Brasil International Conference on Fatigue. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2001. http://dx.doi.org/10.4271/2001-01-4055.

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Dzioba, I., and S. Lipiec. "Microstructure, strength properties and fracture toughness of S355JR steel." In FATIGUE FAILURE AND FRACTURE MECHANICS XXVI: Proceedings of the XXVI Polish National Conference on Fatigue Failure and Fracture Mechanics. Author(s), 2016. http://dx.doi.org/10.1063/1.4965948.

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Mrozinski, Stanisław, and Michal Piotrowski. "Effect of strain level on cyclic properties of S355 steel." In FATIGUE FAILURE AND FRACTURE MECHANICS XXVI: Proceedings of the XXVI Polish National Conference on Fatigue Failure and Fracture Mechanics. Author(s), 2016. http://dx.doi.org/10.1063/1.4965937.

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Reports on the topic "Steel – Fatigue"

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Jones, W. B., R. J. Bourcier, and J. A. Van Den Avyle. Thermal fatigue of stainless steel. Office of Scientific and Technical Information (OSTI), December 1987. http://dx.doi.org/10.2172/5749580.

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Mahmoud, Hussam, Guillermo Riveros, Lauren Hudak, and Emad Hassan. Experimental fatigue evaluation of underwater steel panels retrofitted with fiber polymers. Engineer Research and Development Center (U.S.), March 2023. http://dx.doi.org/10.21079/11681/46647.

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Many steel structures are susceptible to fatigue loading and damage that potentially threaten their integrity. Steel hydraulic structures (SHS) experience fatigue loading during operation and exposure to harsh environmental conditions that can further reduce fatigue life through stress corrosion cracking and corrosion fatigue, for example. Dewatering to complete inspections or repairs to SHS is time consuming and leads to economic losses, and current repair methods, such as rewelding, often cause new cracks to form after relatively few cycles, requiring repeated inspection and repair. The use of bonded carbon fiber–reinforced polymer (CFRP) to repair fatigue cracks in metallic structures has been successful in other industries; recent work suggests that this method offers a more reliable repair method for SHS. Studies regarding CFRP retrofits of SHS indicate that early bond failure often controls the degree of fatigue life extension provided by the repair. This study aims to extend previous studies and increase the fatigue life of repaired steel components by employing methods to improve CFRP bonding. Additionally, using basalt reinforced polymer (BFRP) instead of CFRP is proposed. BFRP is attractive for SHS because it does not react galvanically and has excellent resistance to chemically active environments.

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Christine, Lozano, and Riveros Guillermo. Classical and innovative methods of fatigue and fracture repairs in navigation steel structures. Engineer Research and Development Center (U.S.), April 2021. http://dx.doi.org/10.21079/11681/40422.

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Most of the hydraulic steel structures (HSS) in the U.S. have reached or have past their design life, which leads to unsatisfactory performance. Welded connections with low fatigue resistance, poor weld quality, unanticipated structural behavior, or unexpected loading due to the deterioration of the design boundary conditions are the causes of fatigue cracking. The purpose of this report is to identify and evaluate the traditional and new methods used for fatigue and fracture repairs in navigation steel structures to restore their load carrying capacity and fatigue and fracture resistance. The final objective was to generate a guidance report comprising of recommended and more efficient repair methods for the different fatigue limit states observed in navigation steel structures.

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Riveros, Guillermo, and Hussam Mahmoud. Underwater carbon fiber reinforced polymer (CFRP)–retrofitted steel hydraulic structures (SHS) fatigue cracks. Engineer Research and Development Center (U.S.), March 2023. http://dx.doi.org/10.21079/11681/46588.

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Recent advances in the use of fiber-reinforced polymers (FRP) to retrofit steel structures subjected to fatigue cracks have shown to be a viable solution for increasing fatigue life in steel hydraulic structures (SHS). Although several studies have been conducted to evaluate the use of FRP for retrofitting metal alloys and the promising potential of such has been well-demonstrated, the application has never been implemented in underwater steel structures. This Coastal and Hydraulics Engineering Technical Note presents the implementation of FRP patches to repair fatigue cracks at Old Hickory Lock and Dam miter gate.

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DeLong, David, and Mark Bowman. Fatigue Strength of Steel Bridge Members with Intersecting Welds. West Lafayette, Indiana: Purdue University, 2010. http://dx.doi.org/10.5703/1288284314287.

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Wang, Yuanqing, Haoyang Gu, Xiaowei Liao, Tianshen Zhang, and Liang Zong. STUDY ON LOW-TEMPERATURE FATIGUE OF STEEL STRUCTURES AND FATIGUE PROPERTIES OF WELDS UNDER SHEARS STRESS. The Hong Kong Institute of Steel Construction, December 2018. http://dx.doi.org/10.18057/icass2018.p.055.

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Chan, K. S., R. C. CmClung, and T. Y. Torng. Microstructure-Based Fatigue Life Prediction Methods for Naval Steel Structures. Fort Belvoir, VA: Defense Technical Information Center, January 1993. http://dx.doi.org/10.21236/ada265429.

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Dennis, Kathleen R., and Norman E. Dowling. Fatigue Crack Growth of Gun Tube Steel under Spectrum Loading. Fort Belvoir, VA: Defense Technical Information Center, September 1986. http://dx.doi.org/10.21236/ada174369.

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Winholtzd, R. A., and J. B. Cohen. Changes in the Macrostresses and Microstresses in Steel with Fatigue. Fort Belvoir, VA: Defense Technical Information Center, July 1991. http://dx.doi.org/10.21236/ada238946.

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Messner, Mark, Ajey Venkataraman, Andrea Rovinelli, and Ting-Leung Sham. Microstructural Model for Creep-Fatigue Interaction in Grade 91 Steel. Office of Scientific and Technical Information (OSTI), March 2021. http://dx.doi.org/10.2172/1772468.

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