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Kaushal Kumar, Satish Kumar, Gurprit Singh, Jatinder Pal Singh and Jashanpreet Singh
In the present work, erosion wear due to slurry mixture flow has been investigated using a slurry erosion pot tester. Erosion tests are conducted on three different slurry pipe materials, namely, mild steel, SS202, and SS304, to establish the influence o...
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Ville Matikainen, Kari Niemi, Heli Koivuluoto and Petri Vuoristo
Thermally-sprayed alumina based materials, e.g., alumina-titania (Al2O3-TiO2), are commonly applied as wear resistant coatings in industrial applications. Properties of the coatings depend on the spray process, powder morphology, and chemical composition...
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Juncheng Mi and Guoqin Huang
Direct-drive electro-hydraulic servo valves are widely used in the aerospace industry, in the military, and in remote sensing control, but there is little research and discussion on their performance degradation and service life prediction. Based on prev...
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Na Liang, Zhaohui Yuan and Fuli Zhang
Severe oil particle-induced erosion to the prestage component progressively degrades the overall performance of the deflector jet servo valve (DJSV), even leading to valve failure. Herein, we present an approach for evaluating degradation in performance ...
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Cristina Lavinia Nistor, Catalin Ionut Mihaescu, Daniela Bala, Ioana Catalina Gifu, Claudia Mihaela Ninciuleanu, Sabina Georgiana Burlacu, Cristian Petcu, Mariana-Gratiela Vladu, Adi Ghebaur, Lenuta Stroea and Ludmila Otilia Cinteza
A simple and cost-efficient method to modify different surfaces in order to improve their bioactivity, corrosion and wear resistance proved to be sol-gel coatings. The silane layers have been shown to be effective in the protection of steel, aluminum or ...
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Nicola Aldi, Nicola Casari, Michele Pinelli, Alessio Suman, Alessandro Vulpio, Ottavio Mantovani and Paolo Saccenti
In industrial applications such as chemical plants, cement factories, and glassmakers, large-sized centrifugal fans are commonly used for dust-laden flow processing. In many cases, the contamination is due to solid particles responsible for fouling and e...
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Shuaibing Li, Xingzu Yang, Yongqiang Kang, Zongying Li and Hongwei Li
As aerospace, electrified railway, weapon equipment manufacturing, and other fields have leapt forward, the operating environment of current-carrying friction pairs is becoming increasingly severe, and research on the current-carrying friction and wear t...
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Annalisa Fortini, Alessio Suman, Alessandro Vulpio, Mattia Merlin and Michele Pinelli
Surface material loss due to erosive wear is responsible for the increased cost of maintenance and downtime in industries. Hence, hardfacing is one of the most valuable and effective techniques employed to improve the wear resistance of heavy-duty compon...
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Yaroslav Dvirnyk, Dmytro Pavlenko and Radoslaw Przysowa
This paper analyzes the health and performance of the 12-stage axial compressor of the TV3-117VM/VMA turboshaft operated in a desert environment. The results of the dimensional control of 4800 worn blades are analyzed to model the wear process. Operation...
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Sebastián Leguizamón, Ebrahim Jahanbakhsh, Siamak Alimirzazadeh, Audrey Maertens and François Avellan
Erosive wear of hydraulic machines is a common issue, which results in efficiency degradation, the enhancement of cavitation, and the need for expensive maintenance. Although numerical simulations of the erosion process could be very useful, both for und...
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Ivan Pavlenko, Justyna Trojanowska, Oleksandr Gusak, Vitalii Ivanov, Jan Pitel, Vita Pavlenko
Pág. 52 - 56
The permanent increase of operating parameters of modern multistage centrifugal pumps requires more precise modelling for estimation their dynamic reliability and needs to develop new approach and methodology for the related calculations. It is necessary...
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Miroslaw Szala and Tadeusz Hejwowski
This manuscript deals with the cavitation erosion resistance of flame-sprayed Al2O3-40%TiO2/NiMoAl cermet coatings (low-velocity oxy-fuel (LVOF)), a new functional application of cermet coatings. The aim of the study was to investigate the cavitation ero...
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Andrea Milanti, Heli Koivuluoto, Petri Vuoristo, Giovanni Bolelli, Francesco Bozza and Luca Lusvarghi
Thermally-sprayed Fe-based coatings have shown their potential for use in wear applications due to their good tribological properties. In addition, these kinds of coatings have other advantages, e.g., cost efficiency and positive environmental aspects. I...
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Eugene Medvedovski, Gerardo Leal Mendoza and Giovanny Vargas
Downhole heavy oil production and oil sand processing are associated with severe damage and failures of production equipment components, e.g., production tubing and pumping systems, due to erosion-corrosion resulting in processing losses, production down...
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Luis Domenech, Víctor García-Peñas, Asta ?akalyte, Divya Puthukara Francis, Eskil Skoglund and Fernando Sánchez
Under droplet impingement, surface leading edge protection (LEP) coating materials for wind turbine blades develop high-rate transient pressure build-up and a subsequent relaxation in a range of strain rates. The stress-strain coating LEP behavior at a w...
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Dmitriy Gvozdyakov and Andrey Zenkov
This work presents a review of modern devices for spraying coal?water fuels. The efficiency of their operation was analyzed according to several criteria: the simplicity of their design (A), the fuel channel?s predisposition to clogging (B), durability i...
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Anitha Kumari Azmeera, Prakash Jadhav and Chhaya Lande
Upgrading abradable or wearable coatings in the high-temperature zone of aero engines is advised to increase the efficiency and high-density power in gas turbine engines for military or commercial fixed-wing and rotary-wing aircraft. The development of t...
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Marina Kovaleva, Mayya Prozorova, Maria Arseenko, Yuri Tyurin, Oleg Kolisnichenko, Maxim Yapryntsev, Vseslav Novikov, Olga Vagina and Viacheslav Sirota
In this work, dense zircon-based ceramic coatings were obtained from inexpensive zircon powder on a steel substrate by using a new multi-chamber gas-dynamic accelerator. The microstructure and phase composition of the coating were characterized by scanni...
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Carolina Camba, José Luis Mier, Luis Carral, María Isabel Lamas, José Carlos Álvarez, Ana-María Díaz-Díaz and Javier Tarrío-Saavedra
This work proposes a green material for artificial reefs to be placed in Galicia (northwest Spain) taking into account the principles of circular economy and sustainability of the ecosystem. New concrete formulations for marine applications, based on cem...
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Nadia Valeria Urzúa Valenzuela,María Francisca Cáceres Bueno
Pág. 18 - 24
El aumento de la población humana ha provocado el uso intensivo de los recursos que entrega la naturaleza, produciendo así el desgaste del ecosistema. El presente trabajo tiene como objetivo realizar un análisis del impacto económico-ambiental de los inc...
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