Готові списки джерел за темами / Cavitation erosion characteristic

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Добірка наукової літератури з теми "Cavitation erosion characteristic"

Автор: Grafiati

Опубліковано: 28 травня 2022

Оновлено: 31 липня 2025

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Статті в журналах з теми "Cavitation erosion characteristic"

Mitelea, Ion, Ilare Bordeașu, Florin Frant, Ion-Dragoș Uțu, Corneliu Marius Crăciunescu, and Cristian Ghera. "Cavitation Erosion Characteristics of the EN AW-6082 Aluminum Alloy by TIG Surface Remelting." Materials 16, no. 7 (2023): 2563. http://dx.doi.org/10.3390/ma16072563.

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Components made of aluminum alloys operating under cavitation erosion conditions have low performance and therefore a reduced lifetime. The degradation of these components is a consequence of the repetitive implosion of cavitation bubbles adjacent to the solid surface. In this paper, the effect of the rapid re-melting and solidification modification of the surface microstructure of parts of an Al-based alloy strengthened by artificial ageing on the reduction of material loss through cavitation erosion was investigated. The heat source used was the electric arc generated between a tungsten elec

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Guo, Qiwei, and Ning Chen. "Centrifugal pump cavitation and cavitation erosion analysis." Journal of Physics: Conference Series 3046, no. 1 (2025): 012017. https://doi.org/10.1088/1742-6596/3046/1/012017.

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Abstract The phenomena of cavitation and cavitation corrosion exist widely in the fields of hydraulic machinery, ship propulsion, water conservancy, and hydropower etc., which often bring negative impacts, but their research is significant for energy-saving technology. This paper discusses the importance of pump cavitation and cavitation from numerical simulation and experimental measurement. Numerical simulations reveal that cavitation in centrifugal pumps begins at the impeller inlet vanes, and the extent of the cavitation bubbles increases and expands along the flow path. When serious, the

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Mitelea, Ion, Daniel Mutașcu, Ion-Dragoș Uțu, Corneliu Marius Crăciunescu, and Ilare Bordeașu. "Cavitation Erosion of the Austenitic Manganese Layers Deposited by Pulsed Current Electric Arc Welding on Duplex Stainless Steel Substrates." Crystals 14, no. 4 (2024): 315. http://dx.doi.org/10.3390/cryst14040315.

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Fe-Mn-Cr-Ni alloys like Citomangan, delivered in the form of powders, tubular wires, and coated electrodes, are intended for welding deposition operations to create wear-resistant layers. Their main characteristic is their high capacity for surface mechanical work-hardening under high shock loads, along with high toughness and wear resistance. In order to increase the resistance to cavitation erosion, hardfacing of Duplex stainless steel X2CrNiMoN22-5-3 with Citomangan alloy was performed using a new welding technique, namely one that uses a universal TIG source adapted for manual welding with

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Shrestha, Rakish, Samman Singh Pradhan, Prithivi Gurung, Amul Ghimire, and Sailesh Chitrakar. "A review on erosion and erosion induced vibrations in Francis turbine." IOP Conference Series: Earth and Environmental Science 1037, no. 1 (2022): 012028. http://dx.doi.org/10.1088/1755-1315/1037/1/012028.

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Abstract Vibrations are one of the major issues observed during the operations of Francis turbine as they are frequently operated outside their optimal operating range, with rapid load changes. In hydropower plants, vibrations occur in various parts which can be classified as: hydraulic civil parts such as reservoir, intake, dam, tail race etc. mechanical parts such as penstock, turbine, draft tube and shaft, and electrical parts such as generator and transformer. However, due to the sediments and cavitation problems, the regions around rotating parts such as turbine experiences severe vibrati

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Sălcianu, Cornelia Laura, Ilare Bordeaşu, Ion Mitelea, and Lavinia Madalina Micu. "Mechanical Hardening and Resistance to Cavitation Erosion of the Austenitic Stainless Steels with Varying Proportions of Delta Ferrite." Advanced Materials Research 1111 (July 2015): 127–32. http://dx.doi.org/10.4028/www.scientific.net/amr.1111.127.

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The paper analyzes, comparative, the resistance to the cavitation erosion for the X5CrNi18-10 classic steel, with that provided by two another steels, processed experimental, with approx. 0.1 % C, 24% Cr, 18 % , approx. 10% Ni and wich was mechanically hardened by vibro rolling. Cavitation tests were performed on a vibrating device with piezoelectric crystal, in the Laboratory of Hydraulic Machines in Timisoara ( LMHT ), determining the characteristic curves of the variation in time of the mean depth erosion, MDE (t ) and mean depth erosion rate, MDER (t). By mechanical tests and by metallogra

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Lazăr, Iosif, Ilare Bordeaşu, Ion Mitelea, et al. "Evaluation of the Behavior and Resistance to Cavitation Erosion of the Structure of the CuSn12-C Bronze Obtained by Thermal Treatment of Quenching and Tempering." Key Engineering Materials 890 (June 23, 2021): 165–72. http://dx.doi.org/10.4028/www.scientific.net/kem.890.165.

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The paper presents the results of the research on the vibration cavitation erosion of the CuSn12-C bronze, subjected to the volumetric heat treatment of quenching to 700 °C, with water cooling, followed by tempering to 250 °C, with slow cooling in the air. The applied heat treatment shows the improvement of the behavior and the resistance to the cavitation erosion, compared to the initial state, of molded semi-finished product. The evaluation of the behavior and the resistance to the cavitation erosion is made by comparing the value of the parameters MDEmax, Rcav and Rz with those of the deliv

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Korobov, Yury, Hussam Alwan, Aleksey Makarov, et al. "Comparative study of cavitation erosion resistance of austenitic steels with different levels of metastability." Metal Working and Material Science 24, no. 1 (2022): 61–72. http://dx.doi.org/10.17212/1994-6309-2022-24.1-61-72.

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Introduction. Reliability-critical components of equipment working in contact with high-speed liquid media (for example, turbine blades of hydroelectric power stations, pump impellers, ship propellers) are subjected to one of the types of wear – cavitation erosion. The current study aims to select and scientifically substantiate the type of coating and its structural-phase state for the effective protection of parts from cavitation erosion. Research methods. The study carries out a comparative analysis of differences in the cavitation erosion resistance of characteristic austenitic steels, in

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Zhu, Han, Ning Qiu, Chuan Wang, et al. "Prediction of Cavitation Evolution and Cavitation Erosion on Centrifugal Pump Blades by the DCM-RNG Method." Scanning 2021 (November 15, 2021): 1–12. http://dx.doi.org/10.1155/2021/6498451.

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Cavitation can reduce the efficiency and service life of the centrifugal pumps, and a long-term operation under cavitation conditions will cause cavitation damage on the surface of material. The external characteristic test of the IS65-50-174 single-stage centrifugal pump was carried out. Moreover, the cavitation mechanism under specific conditions was analyzed by numerical simulation. Considering the macroscopic cavitation flow structure in the centrifugal pump, three different cavitation erosion prediction methods were used to predict the erodible areas. The results show that the calculation

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ROMANOV, Alexey A., Sergey V. EVDOKIMOV, and Vladimir A. SELIVERSTOV. "STUDY OF THE PROCESS OF CAVITATION EROSION ON THE IMPELLERS OF THE ZHIGULI HYDROELECTRIC POWER PLANT." Urban construction and architecture 8, no. 2 (2018): 56–59. http://dx.doi.org/10.17673/vestnik.2018.02.9.

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The results of studying the process of cavitation erosion on the blades of the impellers of the Zhigulevskaya hydroelectric power plant are presented. The technique of carrying out full-scale cavitation tests by the method of high-speed erosion with the use of soft metal plates pasted onto the suspected zones of the appearance of cavitation damages is described. Cavitation tests were carried out for three characteristic operating modes, with a substantiation of the technological peculiarity of full-scale operation of hydroturbine installations. The results of the investigation of the turbine b

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Salcianu, Cornelia Laura, Ilare Bordeaşu, Brandusa Ghiban, et al. "Research on the Influence of the Heat Treatment Temperature on the Cavitation Behavior of the Aluminum Alloy 2017 A." Solid State Phenomena 349 (September 6, 2023): 55–62. http://dx.doi.org/10.4028/p-t5fhog.

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The good mechanical properties of aluminum alloy 2017 A have determined its use in a wide range of applications in which cavitational solocitations occur, such as hydraulic actuation installations, heat engine blocks, boat propellers and sloops, pumps in the cooling system of thermal engines, wings and ogives of airplanes. Currently, research is focused on the development of procedures for improving the resistance to cavitational erosion of these materials. This paper presents the results of the research on the cavitation erosion behavior of the material subjected to thermal aging treatment at

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Більше джерел

Дисертації з теми "Cavitation erosion characteristic"

Ткач, П. Ю. "Вплив надроторних елементів шнеку на кавітаційно-ерозійні якості шнекововідцентрового ступеня насоса". Thesis, Науково-дослідний і проектно-конструкторський інститут атомного та енергетичного насособудування, 2018. http://essuir.sumdu.edu.ua/handle/123456789/70557.

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У дисертаційній роботі вирішена актуальна науково-технічна задача – підвищення кавітаційно-ерозійних якостей шнекововідцентрового ступеня за допомогою надроторних елементів шнеку. Наведено результати дослідження робочого процесу шнекововідцентрового ступеня з надроторними елементами, а також визначено вплив їх геометричних параметрів на кавітаційно-ерозійні якості досліджуваного ступеня. Запропоновано фізичну модель течії у каналах шнекововідцентрового ступеня з надроторними елементами на режимі недовантаження. Основним змістом роботи є отримання експериментальним шляхом оптимальних геометричн

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Частини книг з теми "Cavitation erosion characteristic"

Jing, Luo, and Li Jian. "Erosion Characteristic in Ultrasonic Cavitation Experiment." In Advanced Tribology. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03653-8_208.

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Wang, Jiao, and Yaan Hu. "Experimental Investigation of Hydrodynamics on Abrupt-Expansion Pipe Behind Control Valve of Hydro-Driven Shiplift." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6138-0_36.

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AbstractControl valve is the special core equipment of hydro-driven ship lift, it is similar to the electric motor of the electric driven ship lift, which is the key to the safe and efficient operation of ship lift. Hydro-driven ship lift requires very high performance of control valve. It not only needs to control the flow accurately, but also to meet the needs of large flow. It is difficult to avoid cavitation for control valve to work under high pressure difference. How to control the erosion and destruction of valves and pipelines caused by cavitation is related to the operation safety and

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Huichen, Zhang, Gao Yuzhou, and Zhou Rixue. "Cavitation Erosion Characteristics of Titanium Alloy Thin Film Prepared by Ion Beam Enhanced Deposition." In Advanced Tribology. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03653-8_171.

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Тези доповідей конференцій з теми "Cavitation erosion characteristic"

Lee, Hee-Baek, Chung-Seo Park, Seong-Mo Son, Kyung-Jin Park, and Sang-Sik Park. "Erosion Resistance Testing for Abrasion and Cavitation Resistant Coatings." In SSPC 2015 Greencoat. SSPC, 2015. https://doi.org/10.5006/s2015-00036.

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Abstract Cavitation erosion of the rudder has been a serious problem in the high-speed container ship industry. It is well known that the lifetime of a conventional coating system is about 6 months against cavitation bubble collapse. Although STS 316Lstainless steel has been applied to prevent such a problem, there are several drawbacks such as high repair cost and poor workability. In this study, a series of cavitation erosion resistance tests, for several types of coatings, were performed to identify and prioritize among coatings. A useful test method, which can more effectively simulate the

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Neville, A., and B. A. B. McDougall. "Investigating Aspects of Tribo-Corrosion of Titanium and Its Alloys in Aggressive Process Streams." In CORROSION 2002. NACE International, 2002. https://doi.org/10.5006/c2002-02129.

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Abstract As the usage of Titanium and its alloys expands from the traditional market, alloy development is providing new materials with tailored corrosion resistance and mechanical properties for use in various corrosive environments. The corrosion resistance of titanium and its alloys is due to the presence of a thin, tenacious passive layer and the corrosion behaviour has been widely studied. Much less is known about the performance of Ti and its alloys in tribo-corrosion conditions, where corrosion occurs in association with a mechanical degradation process. This paper studies the corrosion

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Kwok, C. T., H. C. Man, and L. K. Leung. "Effect of Temperature and pH on Cavitation Erosion of Super Duplex Stainless Steel." In CORROSION 1996. NACE International, 1996. https://doi.org/10.5006/c1996-96514.

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Abstract Cavitation erosion characteristics of super duplex stainless steel (S32760) and austenitic stainless steel (S30400) in 3.5% NaCl solution with controlled temperature and pH value in the range of 10 to 70°C and pH 3 to 11 have been studied by means of a 20kHz ultrasonic vibrator at a peak to peak amplitude of 50 μm. The erosion resistance of other stainless steels including S31803 and S31603 was also investigated for comparison purpose. Plots of cumulative erosion mass loss per unit area versus temperature for S32760 and S30400 indicate that the degree of erosion initially increases as

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McDougall, B. A. B., and A. Neville. "Understanding Wear/Corrosion Interactions in Tribo-Corrosion of Titanium and Its Alloys." In CORROSION 2003. NACE International, 2003. https://doi.org/10.5006/c2003-03265.

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Abstract Today, titanium is no longer considered to be an exotic material. Previously, it was thought that titanium and its alloys imposed such high costs that their use was not viable. This is not the case now and there are many titanium components in service in marine environments, such as Ti valves, impellers and heat exchanger tubes. Designers and engineers are increasingly seeing titanium and its alloys as a viable alternative to other high-grade alloys for applications in marine environments, where erosion and corrosion resistance are important. This paper reports on studies of tribo-cor

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Anyanwu, Ezechukwu, Claudia Prieto, Bruce Brown, and Marc Singer. "Mechanical Properties of a Mackinawite Corrosion Product Layer." In CORROSION 2019. NACE International, 2019. https://doi.org/10.5006/c2019-13441.

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Abstract Mechanical properties of the corrosion product layers as well as corrosion mechanisms need to be studied for better prediction of general and localized corrosion and to develop a holistic understanding of corrosion mechanisms in upstream oil and gas pipelines. Various ongoing research efforts have focused on the topic of sour corrosion mechanisms, while minimal attention has been paid to ascertaining the mechanical properties of the iron sulfide layers developed in these environments. The effects of fluid flow (i.e. erosion/corrosion, wall shear stress) as well as the impact of differ

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Zheng, Zhijian, Guofu Ou, Haojie Ye, and Haozhe Jin. "Numerical Analysis on Cavitation Erosion of a High Pressure Differential Control Valve." In ASME 2016 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/pvp2016-63209.

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The numerical simulation on the cavitation erosion of a high pressure differential control valve is conducted. The characteristic of cavitation flow is obtained by using full cavitation model and RNG k-ε turbulence model with actual operational conditions and fluid physical parameters. Results showed that: the flow velocity increases rapidly as the fluid passes through the gap between the valve spool and seat. Simultaneously the local static pressure decreases below the saturation pressure of the fluid, then the cavitation is formed. For the convergent - expansion structure, the flow separatio

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Karimaei, Hadiseh, and Hamidreza Chamani. "Study of Cavitation and Wear Damages in Conrod Big End Bearing of a Heavy Duty Diesel Engine by Using Elasto-Hydrodynamic Method." In ASME 2009 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/icef2009-14091.

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Wear and cavitation erosion are the common damages in engine bearing shells. In the case of cavitation damage, the generation and immediate collapse of small gas bubbles cause high pressure pulses and the bearing surface is being locally damaged. Cavitation damage is observed in heavy duty diesel engine due to highly dynamic loading, oscillation of pins, turbulence of oil flow and other factors. Wear damage induces adjustment in the bearing geometry and affects the oil film pressure and the durability of bearing shell. In this paper, wear and cavitation damages in connecting rod big end bearin

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Yuzawa, Satoshi, Takumi Hashizume, Ryoji Okutsu, and Eisuke Outa. "Lifetime of a Control Valve Plug Related With Cavitation Erosion at Differential Pressure of 20 MPA." In ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/fedsm2002-31290.

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A contoured plug of stainless steel #316 inserted in a low CV valve has been subjected to erosion tests at a pressure reduction of 20MPa. The test duration on a single plug has extended over 300 hours until the shut-off function becomes incomplete. The fundamental flow pattern inside the valve is almost unchanged at the inlet pressure up to 20MPa in a sense that the pressure reduction has been almost completed at the throat formed by the seat-ring and the characteristic surface of the plug head. The kinetic energy of the flow at the throat describes the energy that is dissipated in the valve.

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Böttig, Paul, Lutz Müller, Sven Osterland, and Jürgen Weber. "Influence of Dissolved Air Content on Cavitation in Internal Gear Pumps." In BATH/ASME 2024 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/fpmc2024-140881.

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Abstract Internal gear pumps are one of the most popular fixed-displacement hydraulic pumps due to their high reliability, low pressure pulsation, and comparatively low cost. Following previous research on stationary valve models, using high-speed imaging technology and simulation to better understand the interactions of dissolved air, cavitation, and cavitation erosion, an internal gear pump was examined. The goal of the experiment was to determine the individual influences of gas and vapour cavitation on suction-side cavitation, which determines a hydrostatic pump’s top speed. The identifica

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Uzawa, Kiyoshi, Kazuro Kageyama, Hideaki Murayama, et al. "Study of the Characteristic and Possibility for Applying Composite Materials to the Blades of Tidal Power Generation." In ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/omae2008-57738.

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Recently, several power plants from the rotation of turbine with tidal current have been tried. Since the density of seawater is 800 times as much as that of the air, the loading of water on a turbine strictly requires much more strength and stiffness of blade compared with the wind turbine. Neither wind turbine nor standard hydroelectric dam turbines can simply be submerged into an ocean current. There are some formidable technical challenges to be overcome compared with the wind turbine. Key issues are cost effectiveness, structural integrity and workability in access and installation. The m

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