Thematische Bibliographien / Fatigue wear

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Auswahl der wissenschaftlichen Literatur zum Thema „Fatigue wear“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 21. Juni 2025

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Zeitschriftenartikel zum Thema "Fatigue wear"

Miyoshi, Dr Kazuhisa. "Fretting fatigue and wear." Tribology International 36, no. 2 (2003): 69. http://dx.doi.org/10.1016/s0301-679x(02)00133-0.

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Qin, Xinmao, Xixia Liu, Huaze Huang, and Cunhong Yin. "Effect of Wear on Alternating Bending Fatigue Life of 20CrNi2Mo Martensitic Steel." Lubricants 12, no. 5 (2024): 157. http://dx.doi.org/10.3390/lubricants12050157.

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Bending fatigue failures are commonly related to the wear behavior in an active system. The surface wear and plastic deformation of the tribolayer play crucial roles in the wear–bending fatigue behaviors of steels. In particular, the lamellar structure of martensitic steel leads to its unique wear–bending fatigue behavior. In this work, the wear–bending fatigue testing method and device were introduced to explore the wear–bending fatigue behavior of the martensitic steel. The effect of wear on the alternating bending fatigue life of 20CrNi2Mo martensitic steel was studied under low and high fatigue stress. The influence of wear debris on the fatigue life at two different sliding speeds was also analyzed. The results show that the fatigue life decreased with the wear load increased under high bending stress. Moreover, for systems with nanoscale wear debris on the steel surface, the wear–bending fatigue lifetimes are significantly enhanced compared with large wear debris.

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Li, An Hai, Jun Zhao, Z. Q. Pei, and S. G. Guo. "Progressive Tool Failure in High Speed End Milling of Inconel 718 with Coated Carbide Inserts." Advanced Materials Research 188 (March 2011): 32–37. http://dx.doi.org/10.4028/www.scientific.net/amr.188.32.

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The failure progression of coated carbide tools in end milling of Inconel 718 superalloy was investigated. Tool wear was measured and failure mechanisms were discussed in the experimental process periodically. The experimental results indicated that the tool failure mechanisms were synergistic interaction among abrasive wear, adhesive wear, and fatigue wear. However, abrasive wear and adhesive wear were the main failure mechanisms at the beginning, fatigue wear prevailed the upper hand around the time when edge chipping appeared, and after edge chipping abrasive wear and adhesive wear dominated until the failure time. In addition, the macroscopic failure of the cutting tools is closely correlated to the nucleation and propagation of the crack under cyclic mechanical and thermal impact forces. Mechanical fatigue wear was the key form of fatigue wear at lower cutting speed, while at higher cutting speed thermal fatigue wear was the dominant fatigue wear.

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Liu, Chun-Peng, Xiu-Juan Zhao, Peng-Tao Liu, Jin-Zhi Pan, and Rui-Ming Ren. "Influence of Contact Stress on Surface Microstructure and Wear Property of D2/U71Mn Wheel-Rail Material." Materials 12, no. 19 (2019): 3268. http://dx.doi.org/10.3390/ma12193268.

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To investigate the relationship between surface microstructure and wear mechanism in D2/U71Mn wheel-rail material under different contact stress conditions, rolling wear tests using a GPM-40 wear machine to simulate the wheel-rail operation was performed. After wear tests, an optical microscope (OM), scanning electron microscope (SEM) and micro-hardness testers were used to characterize the microstructure and fatigue wear cracks. The results show that the thickness of the plastic deformation layer and surface hardness is increased with the increase of contact stress. Under high contact stress condition (1200 MPa), the severe plastic deformation layer led to the formation of fatigue wear of wheel-rail samples. Under a contact stress of 700 MPa, the wear mechanism of samples is adhesive wear and wear rate is low. With the increase of contact stress, the fatigue cracks are gradually severe. Under a contact stress of 1200 MPa, the wear mechanism of samples becomes fatigue wear and the fatigue wear cracks cause the increase of wear rate. The fatigue wear can accelerate the wear failure of wheel-rail samples. The fatigue wear cracks of wheel samples are severer than that of rail samples due to both the rate of plastic strain and the content of proeutectoid ferrite.

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Buciumeanu, M., A. S. Miranda, and F. S. Silva. "Influence of Wear Properties on Fretting Fatigue Life of a CK45 Alloy and the Al7175 Alloy." Materials Science Forum 587-588 (June 2008): 971–75. http://dx.doi.org/10.4028/www.scientific.net/msf.587-588.971.

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The main objective of this work was to study the influence of the wear properties of two commercial alloys (CK45 and Al7175) on their fretting fatigue behavior. It is verified the effect of material local degradation by wear on a fatigue strength reduction factor, namely the stress concentration factor, and on the overall fretting fatigue life of these materials. The fretting fatigue phenomenon is a synergetic effect between wear and fatigue. It is dependent on both the fatigue and the wear properties of the materials. Material properties promoting an increase in wear resistance should enhance fretting fatigue life.

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Goryacheva, I. G., F. I. Stepanov, and E. V. Torskaya. "Fatigue Wear Modeling of Elastomers." Physical Mesomechanics 22, no. 1 (2019): 65–72. http://dx.doi.org/10.1134/s1029959919010107.

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Berthier, Y., L. Vincent, and M. Godet. "Fretting fatigue and fretting wear." Tribology International 22, no. 4 (1989): 235–42. http://dx.doi.org/10.1016/0301-679x(89)90081-9.

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Ciavarella, M. "Wear due to fatigue initiation." Tribology International 207 (July 2025): 110592. https://doi.org/10.1016/j.triboint.2025.110592.

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Bogdanovich, Alexander, Oleg Yelovoy, Leonid Sosnovskiy, Victor Komissarov, and Sergey Tyurin. "Local Damages During Rolling And Mechano-Rolling Fatigue For The Mechanical System Shaft – Roller (0.45 Carbon Steel – 25XGT Steel, 20XH3A Steel – 20XH3A Steel)." Acta Mechanica et Automatica 9, no. 4 (2015): 259–64. http://dx.doi.org/10.1515/ama-2015-0041.

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Abstract The report provides a description of local damages which are formed in the process of wear-fatigue tests. The analysis of local surface wave-like damages during rolling and mechano-rolling fatigue for the shaft-roller mechanical system under steady-state and multi-stage loading conditions is given. It is shown that the study of local wear-fatigue damage was made possible by new methods of testing and measuring wear-fatigue tests and damages, which are described in the report. New characteristics to estimate the parameters of the local wear-fatigue damage are proposed. The concept of local fatigue curves is introduced. The laws of local wear-fatigue damage for the shaft - roller system are analysed.

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Kulu, Priit, Fransisco Casesnoves, Taavi Simson, and Riho Tarbe. "Prediction of Abrasive Erosion Impact Wear of Composite Hardfacings." Solid State Phenomena 267 (October 2017): 201–6. http://dx.doi.org/10.4028/www.scientific.net/ssp.267.201.

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In this paper an attempt is made to use in wear prediction besides the wear from plastic and brittle components also fatigue fracture component. As example, WC-Co hardmetal reinforced composite hardfacing wear at abrasive impact erosion wear conditions was calculated at low and high impact energy, accountig microcutting with surface fatigue for the wear of matrix and brittle fracture, surface fatigue and plastic deformation for the wear of reinforcement. Calculated wear rates are compared with data obtained from experimental tests. The obtained results show that the used surface fatigue wear model is not applicable in the current case; the recommendations for the further improvement of the model are issued.

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Dissertationen zum Thema "Fatigue wear"

Watkins, Shaun Gareth. "Wear fatigue in nickel superalloys." Thesis, Swansea University, 2015. https://cronfa.swan.ac.uk/Record/cronfa43108.

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To date, work to assess the progression of wear and the effects of wear damage on low cycle fatigue has tended to be focused on specific components and their operating conditions. Although effective in the short term to solve today’s problems, these efforts often deliver insufficient understanding of the overall design space limits to have much influence of future component design. Therefore, the following research attempts to understand how wear damage progresses and how it impacts on fatigue performance in order to develop more accurate lifing models to predict the behaviour and life of real engine components. In order to do this, a survey of the internal Rolls-Royce database and public literature on wear damage on components from ex-service and current service engines was performed. Information relating to the wear scar morphologies in the reports was extracted as well as physically measuring and analysing wear damage on worn components within the Rolls- Royce failure investigation department. The wear damage was then replicated onto Udimet720Li laboratory fatigue specimens by a means of altering the pad pressure and pad sliding distance to produce a range of wear damage in order to carry out fatigue testing. Fatigue testing of the damaged specimens allowed fatigue knockdown factors to be calculated to determine the impact of wear on the fatigue life. A fretting fatigue rig was also designed and built for this research to focus on in-situ fretting fatigue at high temperatures of 600°C.

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Alwahdi, Farag Abdullah Mohamed. "Wear and rolling contact fatigue of ductile materials." Thesis, University of Sheffield, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.421003.

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Sato, Meiji. "Wear and rolling contact fatigue of rail steels." The Ohio State University, 1991. http://rave.ohiolink.edu/etdc/view?acc_num=osu1335372747.

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Walker, David. "Wear of alumina-on-alumina hip prostheses : indentation, fatigue." Thesis, The University of Sydney, 1996. https://hdl.handle.net/2123/27592.

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A compressive fatigue testing apparatus was constructed and used to model the wear of alumina-on-alumina hip prostheses via asperity contact. A ball indenter was used to indent flat alumina specimens which has similar mechanical properties, and initial contact stress versus the number of cycles until wear initiation or to gross wear were plotted for two different grainsized aluminas.

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Dirks, Babette. "Simulation and Measurement of Wheel on Rail Fatigue and Wear." Doctoral thesis, KTH, Spårfordon, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-168023.

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The life of railway wheels and rails has been decreasing in recent years. This is mainly caused by more traffic and running at higher vehicle speed. A higher speed usually generates higher forces, unless compensated by improved track and vehicle designs, in the wheel-rail contact, resulting in more wear and rolling contact fatigue (RCF) damage to the wheels and rails. As recently as 15 years ago, RCF was not recognised as a serious problem. Nowadays it is a serious problem in many countries and ''artificial wear'' is being used to control the growth of cracks by preventive re-profiling and grinding of, respectively, the wheels and rails. This can be used because a competition exists between wear and surface initiated RCF: At a high wear rate, RCF does not have the opportunity to develop further. Initiated cracks are in this case worn off and will not be able to propagate deep beneath the surface of the rail or wheel. When wheel-rail damage in terms of wear and RCF can be predicted, measures can be taken to decrease it. For example, the combination of wheel and rail profiles, or the combination of vehicle and track, can be optimised to control the damage. Not only can this lead to lower maintenance costs, but also to a safer system since high potential risks can be detected in advance. This thesis describes the development of a wheel-rail life prediction tool with regard to both wear and surface-initiated RCF. The main goal of this PhD work was to develop such a tool where vehicle-track dynamics simulations are implemented. This way, many different wheel-rail contact conditions which a wheel or a rail will encounter in reality can be taken into account. The wear prediction part of the tool had already been successfully developed by others to be used in combination with multibody simulations. The crack prediction part, however, was more difficult to be used in combination with multibody simulations since crack propagation models are time-consuming. Therefore, more concessions had to be made in the crack propagation part of the tool, since time-consuming detailed modelling of the crack, for example in Finite Elements models, was not an option. The use of simple and fast, but less accurate, crack propagation models is the first step in the development of a wheel-rail life prediction model. Another goal of this work was to verify the wheel-rail prediction tool against measurements of profile and crack development. For this purpose, the wheel profiles of trains running on the Stockholm commuter network have been measured together with the crack development on these wheels. Three train units were selected and their wheels have been measured over a period of more than a year. The maximum running distance for these wheels was 230,000 km. A chosen fatigue model was calibrated against crack and wear measurements of rails to determine two unknown parameters. The verification of the prediction tool against the wheel measurements, however, showed that one of the calibrated parameters was not valid to predict RCF on wheels. It could be concluded that wheels experience relatively less RCF damage than rails. Once the two parameters were calibrated against the wheel measurements, the prediction tool showed promising results for predicting both wear and RCF and their trade-off. The predicted position of the damage on the tread of the wheel also agreed well with the position found in the measurements. QC 20150526

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Iida, Yusuke. "The effects of magnetic fields on rolling contact fatigue wear." Thesis, Brunel University, 2007. http://bura.brunel.ac.uk/handle/2438/7405.

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The thesis describes the effects of the magnetic field in rolling contact tests of steel by using a two-disc machine and the investigation of its mechanism from contact stress analysis by using FEM and the agnetisation of a ferromagnetic substance. In the tests, two contact kinematic conditions, that is pure rolling and 10% rolling with sliding together with 1.1 and OAT [Tesla] of horizontal static magnetic fields created by permanent magnets were pplied. The results of optical and scanning electron microscopy observations show that finer wear particles and smoother worn surfaces are produced in the presence of the magnetic field. For the generation of the finer wear particles, it is considered necessary that the subsurface crack initiation point is moved towards the surface due to the magnetic field. Wear amounts of the discs are lowered III the magnetic fields under the pure rolling conditions. However, at 100/0 rolling with sliding, the wear amounts are increased in the magnetic fields even though finer particles and smoother surfaces are observed. Both tendencies are unified by calculating the number of cycles required to generate wear particles, which are reduced due to the magnetic field's presence. For these mechanisms, it is considered that domain walls near the contact region are caught by dislocations when the specimen is agnetised and part of the energy for magnetisation activates the dislocation movement resulting in crack initiation.

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Leiro, Alejandro. "Wear and fatigue properties of isothermally treated high-Si steels." Licentiate thesis, Luleå tekniska universitet, Materialvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26642.

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In recent years steels containing Si contents of 1,5% or more have been isothermally transformed in order to obtain a microstructure consisting of bainitic ferrite laths and retained austenite. The refined microstructure and presence of retained austenite has allowed the manufacture of steels with high tensile strength and considerable elongation. The work in this thesis is motivated by the need for more knowledge, especially regarding wear and fatigue properties before they can be used in engineering applications.In this work the rolling-sliding wear resistance and fatigue strength of ausferritic (carbide free bainitic) steels have been investigated. The dry rolling-sliding tribological behavior of 60SiCr7 steel, with 1.65% of Si was investigated in austempered conditions. The obtained ausferritic microstructure contained laths in the sub-micron range. It was found that the retained austenite content decreased and the hardness increased with lower austempering temperatures, and these changes resulted in decreasing the wear rate.The wear behavior of nano-structured ausferritic steels was investigated using the same rolling-sliding conditions as the previous study. If steels of the same hardness are compared, the wear rate was reduced by half in nano-structured steels in relation with the results obtained previously for the 60SiCr7 steel. Initial hardness was an important property in reducing rolling-sliding wear. Surface hardness after wear was inversely proportional to the wear rate. It was found that the increased plasticity obtained from the transformation of retained austenite into martensite (TRIP effect), present in these steels can be beneficial for the wear resistance.The effect of austempering 55Si7 spring steel on its fatigue strength was also investigated. Three heat treatments were done, isothermal transformation at 300 and 350°C respectively and quenching and tempering at 460°C. The samples were tested in rotating-bending fatigue. It was found that by austempering at 300°C the endurance limit was improved by approximately 25% in comparison with the other two heat treatments. The improved fatigue life was mainly due to the carbide-free microstructure. The transformation of austenite into martensite improves fatigue strength, but this depends on the stability of the retained austenite. With the current work some insight has been gained on the behavior of carbide-free bainitic steels in wear and fatigue. The future work will include high resolution techniques in order to further investigate in-depth both the wear and fatigue mechanisms. In addition, other wear modes will be investigated, particularly pure sliding. Godkänd; 2012; 20120521 (andbra); LICENTIATSEMINARIUM Ämnesområde: Konstruktionsmaterial/Engineering Materials Examinator: Professor Braham Prakash, Institutionen för teknikvetenskap och matematik, Luleå tekniska universitet Diskutant: PhD Peter Hedström, Kungliga Tekniska högskolan, Stockholm Tid: Onsdag den 20 juni 2012 kl 14.30 Plats: E231, Luleå tekniska universitet

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Cuddon, Alan. "The wear of materials in an ash conditioner." Master's thesis, University of Cape Town, 1989. http://hdl.handle.net/11427/17665.

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Includes bibliographical references. The abrasive nature of fly ash handled in large coal-fired power stations results in unacceptable material and maintenance costs in ash-water mixing plant. Wear testing has been carried out in situ using a variety of generic materials. A ranking order of wear performance has been established both as a function of material and operating costs, and it has been demonstrated that impressive cost savings can be effected by the use of ceramic-coated steel mixing blades. The performance of such composites has been found to be sensitive to the design and method of application. To optimise materials selection, a family of tungsten carbide-cobalt cermets together with a number of structural ceramics were tested in situ. The modes of wear can be related to material constitution. By ranking the performance of these candidate materials, value based materials selection and design for use can be applied.

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Meyer-Rödenbeck, G. D. "An abrasive-corrosive wear evaluation of some aluminium alloys." Master's thesis, University of Cape Town, 1989. http://hdl.handle.net/11427/18784.

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This investigation evaluates the abrasive-corrosive wear behaviour of aluminium alloys with the aim of establishing a data base of performance and guide lines for material optimisation. Wear test apparatus and standard tests developed by previous research programmes were utilised (Noel and Allen, 1981; Barker, 1988). Further tests were then devised for a more detailed characterisation of wear behaviour. Tests conducted showed that aluminium alloys have approximately a quarter to half the abrasion resistance of mild steel. Poor microfracture properties of Al-Si cast alloys were observed as a result of coarse and brittle silicon rich phases contained in the aluminium matrix. Non heat-treatable wrought alloys exhibit ductile micro-deformation characteristics whilst heat-treatable alloys, having the best abrasion resistance, possess better combinations of strength, hardness and toughness. Tests with combined corrosion and wear showed that most aluminium alloys are subject to pitting corrosion due to localised differences in electrode potentials at constituent sites. Higher series alloys with a large number of constituent particles exhibit higher pitting densities. Due to the high electrode potentials of silicon phases and copper and zinc solid solutions, the alloys LM6+Sr, 2014 and 7075 have poor corrosion resistance and are subject to localised and pitting attack. As a consequence the alloys 2014, 7075 and LM6+Sr show a decrease in wear performance under abrasive-corrosive conditions. In contrast the good corrosion resistance of the alloys 5083, 6261 and 7017 provide a significant improvement in wear performance under conditions of long corrosion periods with light abrasive intervals. This study concludes that the abrasion resistance of wrought alloys may be optimised by designing an alloy with a good combination of tensile strength, fracture toughness and hardness together with an intermediate microstructural size distribution of second phase particles in the aluminium matrix. Ageing of heat treatable alloys improves abrasion resistance significantly, peak hardness and strength conditions resulting in optimum abrasion properties.

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Fordyce, E. P. "The unlubricated sliding wear behaviour of austempered ductile irons." Master's thesis, University of Cape Town, 1989. http://hdl.handle.net/11427/21955.

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Bibliography: pages 85-89. A study has been made of the unlubricated sliding wear behaviour of austempered ductile irons under conditions of sliding velocity and load. The load was varied between 0.9 and 2.8 MPa, whilst the sliding velocity range was between 0.5 and 2.0 ms⁻¹. Two commercial grades of spheroidal graphite irons, SG42 and SG60 were austempered between 250⁰C and 400⁰C. A distinction in the wear behaviour was found with metallic type wear dominating at the lower sliding velocities and an oxidative type wear being evident at the higher sliding velocities. It was however found that an increase in the load resulted in an earlier onset of the oxidative type wear regime, for a specific sliding velocity. On austempering these spheroidal graphite irons the mechanical properties as well as the sliding wear resistance increased dramatically. Furthermore, the austempered irons' outperformed a series of steels of much higher hardness by factors between 2 and 28 times under the same conditions. At the lower velocity of testing the outstanding wear resistance is attributed to the austempered iron's unique microstructure of acicular ferrite and retained austenite and a partial transformation of austenite to martensite. However, at the higher sliding velocity the exceptional wear resistance is derived from a development of an tribologically protective oxide film together with the formation of a hardened white layer. The development of the work hardened layer is linked to the high carbon in the matrix of these irons. The work hardened layer leads to a similar wear rate prevailing for all irons austempered from a specific parent iron. The synergism of variation in load, sliding velocity and wear counterface together with the effect of initial microstructure has been explain in terms of simple wear models.

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Bücher zum Thema "Fatigue wear"

Sosnovskiĭ, L. A. Surprises of Tribo-fatigue. Magic Book, 2009.

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Salem, Jonathan, Edwin R. Fuller, Tatsuki Ohji, and Andrew Wereszczak, eds. Corrosion, Wear, Fatigue, and Reliability of Ceramics. John Wiley & Sons, Inc., 2008. http://dx.doi.org/10.1002/9780470456347.

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International Conference on Wear of Materials (13th 2001 Vancouver, B.C.). Wear of materials. Edited by Rigney David A and Bayer R. G. 1935-. Elsevier, 2001.

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1922-, Waterhouse R. B., and Niku-Lari A, eds. Metal treatments against wear, corrosion, fretting and fatigue. Pergamon, 1988.

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Hattori, Toshio. Fretting Wear, Fretting Fatigue and Damping of Structures. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-46498-0.

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Miyoshi, Kazuhisa. Preliminary study on fatigue strengths of fretted Ti-48Al-2Cr-2Nb. National Aeronautics and Space Administration, Glenn Research Center, 2002.

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Miyoshi, Kazuhisa. Preliminary study on fatigue strengths of fretted Ti-48Al-2Cr-2Nb. National Aeronautics and Space Administration, Glenn Research Center, 2002.

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Abdel Wahab, Magd, ed. Proceedings of the 9th International Conference on Fracture, Fatigue and Wear. Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8810-2.

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Abdel Wahab, Magd, ed. Proceedings of the 7th International Conference on Fracture Fatigue and Wear. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-0411-8.

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Abdel Wahab, Magd, ed. Proceedings of the 8th International Conference on Fracture, Fatigue and Wear. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9893-7.

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Buchteile zum Thema "Fatigue wear"

Gleß, M., V. Fafoutis, G. Repphun, C. G. Provatidis, D. Bartel, and L. Deters. "Fatigue Life in Rolling Contacts with Rough Surfaces." In Friction, Wear and Wear Protection. Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527628513.ch60.

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Gold, P. W., T. Wolf, and M. Plogmann. "Effects of PVD-coatings on Fatigue of Roller Bearings." In Friction, Wear and Wear Protection. Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527628513.ch73.

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Eiss, N. S., and J. R. Potter. "Fatigue Wear of Polymers." In Polymer Wear and Its Control. American Chemical Society, 1985. http://dx.doi.org/10.1021/bk-1985-0287.ch004.

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Sosnovskiy, Leonid A. "Active Systems. Wear-Fatigue Damage." In Foundations of Engineering Mechanics. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/978-3-540-27027-0_2.

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Sosnovskiy, Leonid A. "Methods of Wear-Fatigue Tests." In Foundations of Engineering Mechanics. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/978-3-540-27027-0_3.

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Tallian, Tibor E. "Profilometric Roughness and Contact Fatigue." In Approaches to Modeling of Friction and Wear. Springer New York, 1988. http://dx.doi.org/10.1007/978-1-4612-3814-0_24.

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Schalk, Thomas, Karl-Heinz Lang, and Detlef Löhe. "Fretting Fatigue of Engineering Ceramics." In Corrosion, Wear, Fatigue, and Reliability of Ceramics. John Wiley & Sons, Inc., 2009. http://dx.doi.org/10.1002/9780470456347.ch11.

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Chow, T. S. "A Fatigue-Abrasive Wear Mechanism for Polymeric Surfaces." In Polymer Wear and Its Control. American Chemical Society, 1985. http://dx.doi.org/10.1021/bk-1985-0287.ch005.

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Dubensky, Ellen, Robert Newman, Aleksander J. Pyzik, and Amy Wetzel. "Friction and Wear Behavior of AIBC Composites." In Corrosion, Wear, Fatigue, and Reliability of Ceramics. John Wiley & Sons, Inc., 2009. http://dx.doi.org/10.1002/9780470456347.ch13.

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Jesson, David. "Fatigue, Wear, Creep, and Note on Corrosion." In Understanding the Failure of Materials and Structures. CRC Press, 2024. http://dx.doi.org/10.1201/9780367822347-7.

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Konferenzberichte zum Thema "Fatigue wear"

Kalifa, Mohamed, Andrew Starr, and Muhammad Khan. "Analyzing Frictional Noise for Wear Monitoring under Dry and Lubrication Condition: Experimental Modelling with Pin-on-Disc Tribometer." In The 12th International Conference on Fracture Fatigue and Wear. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-4mmtt5.

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In industrial settings, the use of frictional noise to improve wear monitoring is highly promising. It enables the identification of changes in friction and wear conditions, the assessment of different phases of wear, and the examination of the impact of wear on machine performance. By analysing acoustic signatures, it is conceivable to continuously monitor the wear characteristics and surface conditions. This helps in predicting wear and detecting aberrant wear regimes in real-time. The data demonstrate that in dry conditions, the aluminum disc has higher coefficients of friction relative to cast iron and mild steel, likely due to the absence of graphite flakes in aluminum. Under lubricated conditions, a layer of lube significantly decreases the coefficient of friction, with no apparent deviations across the materials, demonstrating that complete lubrication avoids direct metal contact. In lubrication-starved applications, oily depictions nevertheless help minimize friction, though less efficiently than complete lubrication. In dry conditions, frictional sound levels for mild steel are higher due to direct surface hits, while lubrication reduces noise by eliminating metal-on-metal contact. As a result, monitoring noise levels is a helpful indicator of lubrication difficulties, aiding in maintenance and repairs.

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Kadin, Yuri, Gerrit Jan Dop, Richard Schaake, Gijs de Kort, and Marcus Boehm. "Modeling of Fatigue/Creep in Polymer Cage of Large Size Bearing." In The 12th International Conference on Fracture Fatigue and Wear. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-lmja4i.

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A single pocket cage is the SKF product, which is used in Large Size Bearings for wind industry. The function of a bearing cage is to hold, guide and separate rolling elements, and differently from the conventional cage, the current one consists of segments, which eases the bearing assembly and reduces its weight. The long life challenge (25 years!) requires considering fatigue, and since the single pocket cage is made of PEEK polymer, it is also susceptible to creep (in near room temperature), which enhances fatigue damage. The current work proposes the numerical model capturing non-linear viscoelasticity of PEEK. The mechanical behavior of this material is identified in uniaxial tension test and is modeled in Finite Elements (FE) by means of the Parallel Rheological Framework (this numerical tool has been recently implemented in the commercial software ABAQUS). The current FE model enables to apply cyclic loading, simulating the material response of cage when it operates in running bearing. By applying sub-modeling technique only a small domain is modeled which improves the computational time efficiency. The sub-model domain corresponds to the cage region, where the stress is high resulting to the material yielding, fatigue/creep degradation (due to inelastic cyclic deformation) and initiation of fatigue crack. The FE results were combined with the test data, in attempt to relate the numerically predicted damage to the cage life. The development of irreversible deformation during cyclic loading, shakedown analysis and the stress volume effect, are the main focuses of the current work.

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Abdelfatah, Omar Sami, Yehia A. Eldrainy, Ali I. Shehata, and Ahmed S. Shehata. "A Computational Fluid Dynamics Model for Tornado Wind Turbine." In The 12th International Conference on Fracture Fatigue and Wear. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-rcglq6.

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The increasing demand for clean and renewable energy has led researchers to focus on the development of vertical-axis wind turbines. This paper aims to compare the flow field and performance of the Tornado wind turbine with those of Savonius, Darrieus, and hybrid wind turbines at different tip speed ratios. A two-dimensional, incompressible, turbulent, and unsteady flow model was created using ANSYS Fluent 21 and verified through grid independence studies. The Tornado wind turbine demonstrates enhanced aerodynamic efficiency and reduced negative torque. The results show that the Tornado model achieves a peak power coefficient at a TSR of around 1.1. The model's validity was confirmed by comparing simulation results with experimental data for the model TN-2000 VW4, indicating its potential for real-world applications.

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Şahin, Yusuf. "Mechanical and Thermal Property of Carbon Fiber Reinforced Composites." In The 12th International Conference on Fracture Fatigue and Wear. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-zoau9m.

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Thermal property of carbon fiber-reinforced polymer composites (CRFPs) fabricated through vacuum assisted resin transfer molding method (VARTM) is investigated using Thermo Gravimetric Analysis/Differential Scanning Calorimetry tool. These analysis on laminate composites with three different orientations are carried out at room temperature up to 800°C. Also, mechanical and water absorption behavior of polymeric composites are determined. Among the orientation effect, a longitudinal direction sample including 39 vol. % carbon fiber in epoxy resin indicated that the mass loss in percentage was lower while decomposition temperature was higher than those of others due to higher mechanical strength. These composites revealed the most thermally stable among the others. Further, lower amounts of water absorption rates were obtained at 0o-orientation, followed by 0/90o-orientation composites, but no significant variations occurred with these orientations while some variations occurred for 30o-orientation with increasing the soaking times.

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Quyet, Nguyen Huu, Tran Ngoc Hoa, Nguyen Ngoc Lan, and Bui Tien Thanh. "Damage Detection for Truss Bridge Structure Using XGBoost." In The 12th International Conference on Fracture Fatigue and Wear. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-jdc4vd.

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Structural health monitoring (SHM) is a burgeoning area of interest among modern research endeavors, motivated by the application of state-of-the-art machine learning models. During the last few years, many researchers have proposed techniques for the analysis of SHM datasets, particularly those corresponding to sequence data collected from sensors. Following the flow of this research, in this work, we introduce an effective approach utilizing eXtreme Gradient Boosting (XGBoost), a potent ensemble learning framework rooted in gradient boosting for damage detection. A dataset of damage cases from the Nam O bridge, a steel truss bridge for railways, is applied to assess damages. To evaluate the effectiveness of the method used, common DL models such as One-Dimensional Convolutional Neural Network (1DCNN) and Long Short-Term Memory (LSTM) are also considered. Moreover, the influence of the boosting round on the overall result will be analyzed. The results from the validation set and the test set both illustrate that XGBoost performs better in accuracy than 1DCNN and LSTM with 100% and 95.7%, respectively. Besides, XGBoost is the model that achieved the lowest mean square error (MSE) of only 4.3% in the test set. These results demonstrate the significant potential of utilizing the XGBoost model in SHM and truss bridge structures, especially through the utilization of time-series data.

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Moroni, Niccolò, Mattia Francioli, Alessandro Guarnieri, and Francesco Petrini. "Multi-Hazard Analysis of Steel Buildings Subjected to Earthquake and Fire." In The 12th International Conference on Fracture Fatigue and Wear. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-cui85q.

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Fire produces unique effects on steel structures which can compromise the residual capacity and therefore the structural response if they impact jointly with other natural hazards, such as earthquakes. This work presents a procedure that allows for the extension of the analysis method introduced in the 1990s by Fajfar and Gaspersic and outlined in EC8 (referred to as the N2 method) for the case of Multi-Hazard (MH) analysis, specifically for hazard-chain scenarios involving earthquake and fire. The goal is to assess the structural performance at the end of the sequence of considered events. By appropriately modeling the structure considering elasto-plastic behaviour, it becomes possible to observe the structural response as the plasticization of structural elements progresses: in this context, accounting for material and geometric nonlinearities has proven essential, since the material and structure's behaviour under fire are governed by complex phenomena, due to the significant deformations and distortions involved. The hazard-chain scenario here discussed is characterised by the consecutiveness of main earthquake event and fire; the proposed procedure is then applied to a 2D steel structure. Results highlight that neglecting possible hazard interactions could lead to an erroneous evaluation of the residual structural capacity.

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Denjarukul, Pornnapha, Sawitchaya Sinpromma, Adiruj Peerawat, Thanut Jintakosol, Chayankittipat Yongperakul, and Kageeporn Wongpreedee. "The Microstructure and Diffusion Transformation of Precipitation-Hardened Sterling Silver for Jewelry Application." In The 12th International Conference on Fracture Fatigue and Wear. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-10hqwx.

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Sterling silver commonly uses copper as its primary alloying element, which enhances hardness. However, the presence of copper can cause a fire stain—a red spot microstructure—leading to tarnishing issues. This research focuses on reducing the copper content and developing suitable processes to enhance hardness through the use of three different alloy compositions within the AgCu and AgCuZnNi systems: Alloy SA (92.5 wt% Ag - 7.5 wt% Cu), Alloy A (93.5 wt% Ag - 5.01 wt% Cu - 0.79 wt% Zn - 0.70 wt% Ni), and Alloy B (94.5 wt% Ag - 4.24 wt% Cu - 0.63 wt% Zn - 0.63 wt% Ni). Precipitation hardening was measured at temperatures of 250 °C, 350 °C, and 450 °C for various durations ranging from 15 to 180 minutes. The results demonstrated an improvement in hardness, increasing from 60-70 HV to 120-160 HV after the heat treatment, with optimal results achieved for Alloy B at a temperature of 350 °C for one hour. This refined alloy composition presents a viable alternative, offering reduced copper content while maintaining enhanced mechanical strength and long-term durability post-heat treatment. Furthermore, the CIELAB test confirmed that Alloy B exhibits superior tarnish resistance. The composition and optimized process outlined in this research can serve as a guideline for producing sterling silver for commercial applications.

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Yang, Qiang, Chun Yu Bai, and Bin Wen Wang. "Evolution Mechanism of Three-Point Bending Impact Fatigue Damage in Ultra-High Strength Steel 23Co14Ni12Cr3MoE Material." In The 12th International Conference on Fracture Fatigue and Wear. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-3eo2at.

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Carrier-based aircraft takeoff and landing devices endure repeated high-speed, high-energy, and high-load impacts during operation. This repeated impact results in fatigue damage, a primary cause of failure in these devices, commonly known as impact fatigue. To address multiple impact fatigue failures in the takeoff and landing process of carrier-based aircraft, an investigation into the three-point bending impact fatigue characteristics of ultra-high-strength steel 23Co14Ni12Cr3MoE (abbreviated as A100 material) was conducted using experimental and microscopic techniques. A reproducible impact loading device for three-point bending tests was devised, leveraging a drop hammer impact tester. This innovative setup enabled the proposal of a three-point bending impact fatigue testing method. Test specimens featuring U-shaped, V-90°, and V-60° notches were designed, drawing inspiration from the Charpy pendulum impact test for metallic materials (GB/T 229-2007). Impact fatigue testing was then performed on the drop hammer tester across five distinct energy levels: 25J, 30J, 35J, 40J, and 45J.The study comprehensively examined the load response, energy absorption, and fatigue life of the A100 material in relation to the number of notches and impacts. Post-experiment analysis using a light microscope and SEM electron microscope revealed key morphological features of the A100 material's impact fatigue fracture surface: the crack initiation zone, stable crack propagation zone, rapid crack propagation zone, and shear lip area. Notably, as impact energy rose, the crack propagation zone expanded, while the shear lip area contracted.These findings contribute significantly to understanding the fatigue behavior of A100 material under repeated impact conditions, critical for enhancing the durability and safety of carrier-based aircraft takeoff and landing devices.

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Noda, Naoaki. "Sleeve Slippage Simulation and Slippage Damage Identification for the Development of Next Generation Sleeve Assembly Roll." In The 12th International Conference on Fracture Fatigue and Wear. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-0crdfm.

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Next generation rolls such as super-cermet rolls and all-ceramic rolls can be manufactured using only sleeve assembly type rolls, which have the advantage of being able to reuse the shaft by replacing the damaged sleeves. However, in some cases, failures with unknown causes may occur such as circumferential slippage, shaft pull-out or residual bending deformation at the shrink-fit interface. Such slipping failures cannot be prevented by conventional design concept. This is because even if the resistant torque is greater than the motor torque, the circumferential slippage will occur. Through numerical simulation and miniature roll experiment, the following results are obtained. 1) Even under free rolling condition without motor torque, the circumferential slippage occurs. 2) The slippage is caused by the accumulation of irreversible slip during the roll rotation. 3) The motor torque accelerates the sip amount significantly. 4) The geometry of slippage defect can be identified experimentally. 5) The fatigue strength of sleeve assembly rolling rolls can be evaluated by using √area parameter characterizing the identified slip defects. 6) By preventing the slip damage, the fatigue strength of sleeve rolls can be nearly equal to that of conventional solid rolls without shrink-fit.

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Mirzayev, Huseyn, and Yusuf Şahin. "The New Design of an Elevator’s Door Mechanism." In The 12th International Conference on Fracture Fatigue and Wear. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-ya8xwv.

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In this article, the mechanism of moving the doors of a passenger elevator with a poly-V-belt drive is studied and their disadvantages are examined, and a new type of driven door movement mechanism is designed, manufactured and tested. In the proposed new design, instead of a two-stage poly V- belt transmission with a large gear ratio, a three-stage package of gear box with metal-polymer gears is preferred. Each pinions are made from steels while gears are made from polymers. It fundamentally consists only of two shafts and three stages spur gearings. Due to making the prototype of gear box with three-stages, overall size of door mechanism decreases about 1.8 times in compare to the old driven door mechanism. Further, sound level is around 68 dB, which is lower than the maximum limit of door mechanism. The overall velocity ratio is reduced slightly through a new designed/produced with three-stages of spur gear system. The field tests have confirmed that the developed a prototype of gear box with three-stages has been used successfully.

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Berichte der Organisationen zum Thema "Fatigue wear"

Donovan, James A. Fatigue, Fracture and Wear Properties of Rubber. Defense Technical Information Center, 1989. http://dx.doi.org/10.21236/ada204743.

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Bogdanoff, John L., and Frank Kozin. B-Model Approach to Fatigue, Fatigue Crack Growth, and Wear for Durability Assessment. Defense Technical Information Center, 1985. http://dx.doi.org/10.21236/ada171851.

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Alsem, Daniel Henricus. Mechanisms for fatigue and wear of polysilicon structural thinfilms. Office of Scientific and Technical Information (OSTI), 2006. http://dx.doi.org/10.2172/910596.

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MALDONADO, KARELYS, JUAN ESPINOZA, DANIELA ASTUDILLO, and WILSON BRAVO. Fatigue and fracture resistance and survival of occlusal veneers of composite resin and ceramics blocks in posterior teeth with occlusal wear: A protocol for a systematic review. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2021. http://dx.doi.org/10.37766/inplasy2021.10.0036.

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Review question / Objective: The aim of this systematic review is to synthesize the scientific evidence that evaluates fatigue and fracture resistance, survival, and stress distribution, of composite resin CAD/CAM and ceramic CAD/CAM occlusal veneers in posterior teeth with severe occlusal wear. Condition being studied: Currently there is an increase in cases of dental wear, due to several factors such as: excessive consumption of carbonated drinks, a diet high in acids, gastric diseases, anorexia, bulimia, dental grinding, use of highly abrasive toothpastes, or a combination of these(9) (10) (11) (12); which affect the patient in several aspects: loss of vertical dimension, sensitivity due to the exposure of dentin, esthetics, affectation of the neuromuscular system(11) (13) (14). With the advent of minimally invasive dentistry, occlusal veneers have been found to be a valid option to rehabilitate this type of cases and thus avoid greater wear of the dental structure with full coverage restorations. Sometimes when performing a tabletop it is not necessary to perform any preparation, thus preserving the maximum amount of dental tissue(3) (6) (15). Due to the masticatory load either in patients without parafunction where the maximum masticatory force is approximately 424 N for women and 630 N for men or in those who present parafunction where the maximum bite force can vary from 780 to 1120N(7), it is necessary that the occlusal veneers support that load which makes indispensable a compilation of studies investigating both fatigue and fracture resistance and the survival rate of occlusal veneers in different materials and thicknesses.

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Cao Romero, Julio A., Jorge Reyes-Avendaño, Julio Soriano, Leonardo Farfan-Cabrera, and Ali Erdemir. A Pin-on-Disc Study on the Electrified Sliding Wear of EVs Powertrain Gears. SAE International, 2022. http://dx.doi.org/10.4271/2022-01-0320.

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In contrast to conventional powertrains from internal combustion engine vehicles (ICEV), the tribological performance of powertrains of electric vehicles (EVs) must be further evaluated by considering new critical operating conditions such as electrical environments. The operation of any type of electric motor produces shaft voltages and currents due to various hardware configurations and factors. Furthermore, the common application of inverters intensifies this problem. It has been reported that the induced shaft voltages and currents can cause premature failure problems in tribological components such as bearings and gears due to accelerated wear and/or fatigue. It is ascribed to effects of electric discharge machining (EDM), also named, sparking wear caused by shaft currents and poor or increasingly diminishing dielectric strength of lubricants. A great effort has been done to study this problem in bearings, but it has not yet been the case for gears. Considering that EVs powertrains can be configurated with an electric motor coupled to a single-speed or multi-speed transmission, it is expected that shaft currents can also affect gears to some extent. The pin-on-disc test has been widely used to study sliding wear of gear materials under comparable or realistic operating conditions. This accelerated test is effective for screening materials, lubricants and operating conditions allowing evaluations of their friction and wear properties. However, it has not been implemented for studying gear materials under electrified environments. Thus, this paper aims to explore the friction coefficient and wear of gear materials under non-electrified and electrified sliding in a pin-on-disc tester applying typical of EVs powertrain shaft currents during sliding. The tests were carried out at two different DC currents under comparable gear dry and lubricated sliding contact conditions. Friction coefficient, wear volumes and morphologies were evaluated and reported in this work.

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Cooke. L51783 100000 Hour Design Life of Turbo Compressor Packages. Pipeline Research Council International, Inc. (PRCI), 1998. http://dx.doi.org/10.55274/r0010340.

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The gas pipeline industry continues to respond to the challenges of competitive markets and the need to manage the cost of service effectively. A major cost element being reviewed by the industry is the operating and maintenance expense for its fleet of older turbo compressor units. Many turbo-machinery manufacturers and operators typically quote 100,000 hours as a design limit for service life of turbo compressor components. The Pipeline Research Committee initiated this study to review the life limiting criteria for certain critical components and determine if the design target of 100,000 hours can be safely and reliably met or extended with special component management practices. The first phase of the project was to select the turbomachinery components that would be included in the review. Committee members were surveyed with a detailed questionnaire designed to identify critical components based on: high hours (eg. at or approaching 100,000 hours), the most common engine types operated by the member organizations, and the components of greatest concern from a risk and expense point of view. The selection made covers a wide range of engine types that are of interest to most of the committee companies. This selection represents some 78% of the "high hour" units operated by the committee and includes components from GE Frame 3 and Frame 5, Solar Saturn, Rolls Royce Avon, and Cooper RT56 engines. The report goes into detail regarding the various damage mechanisms which can be the main life limiting factor of the component; creep, fatigue, environmental attack, wear and microstructure instability. For each of the component types selected, the study identifies the life limiting criteria and outlines how the components may be managed for extended life. Many of the selected components can be reliably operated beyond 100,000 hours by following the management practices set out in the report. The decision to continue to operate components or replace with new components is usually based on either a predetermined engineering life limit or retirement for cause. Operating life limits are based on engineering calculations that establish the component life, beyond which the risk of failure is high. Such limits assume a standard, or most often, a worst case set of operating conditions to be conservative for all types of service. Retirement for cause is based on specific inspection techniques applied at appropriate intervals to ensure that damage below a defined limit is identified and the parts are then removed for either refurbishment or retirement.

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Atela, Martin, Atela, Martin, Ojebode, Ayobami Ojebode, Ayobami, Aina, Omotade Aina, Omotade, and Agbonifo, John Agbonifo, John. Demanding Power: Struggles over Fuel Access in Nigeria. Institute of Development Studies (IDS), 2021. http://dx.doi.org/10.19088/ids.2021.054.

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Why do some fuel protests in Nigeria lead to a response from government, but others are barely noticed? What are the politics behind government response and who are the winners and losers? Using a multi-method approach, this study focuses on the period between 2007 and 2017 to investigate the dynamics of fuel protest in Nigeria to ask how, and under which conditions, struggles over energy access in Nigeria produce accountability and empowerment. The findings suggest that accountability and empowerment outcomes of the struggles over fuel access in Nigeria are severely limited by the very conditions that define the state as fragile: weak institutions, elite capture, widespread corruption, and a citizenry that is protest-fatigued and disempowered. This could be true of other fragile and conflict-affected settings. Therefore, frameworks that open up the civic space for dialogues between the government and citizens may produce better outcomes than protests.

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