Search Results - "Gonçalves, David E P"

Thermophysical and Tribological Properties of Highly Viscous Biolubricants by Paredes, Xavier, Liñeira del Río, José M., Gonçalves, David E. P., Guimarey, María J. G., Comuñas, María J. P., Seabra, Jorge H. O., Fernández, Josefa

“…Two new highly viscous biodegradable oils are investigated for use in wind turbine gearboxes (BIO-G00) and in mechanical transmissions of agricultural tractors…”
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High Pressure Characterization of the Viscous and Volumetric Behavior of Three Transmission Oils by Gonçalves, David E. P, Liñeira del Rio, José M, Comuñas, María J. P, Fernández, Josefa, Seabra, Jorge H. O

“…Measurements of viscosity and density of three lubricating oils (two synthetic and one mineral) were performed. The density of these lubricants was measured at…”
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Tribological Behavior of Nanolubricants Based on Coated Magnetic Nanoparticles and Trimethylolpropane Trioleate Base Oil by Liñeira Del Río, José M, López, Enriqueta R, González Gómez, Manuel, Yáñez Vilar, Susana, Piñeiro, Yolanda, Rivas, José, Gonçalves, David E P, Seabra, Jorge H O, Fernández, Josefa

“…The main task of this work is to study the tribological performance of nanolubricants formed by trimethylolpropane trioleate (TMPTO) base oil with magnetic…”
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Synergistic Effects of Functionalized WS2 and SiO2 Nanoparticles and a Phosphonium Ionic Liquid as Hybrid Additives of Low-Viscosity Lubricants by Liñeira del Río, José M., Fernandes, Carlos M. C. G., Gonçalves, David E. P., Seabra, Jorge H. O.

“…This research shows the antifriction and antiwear synergies between a phosphonium ionic liquid (IL) and f-WS2 and f-SiO2 nanoparticles (NPs) as additives of a…”
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Tribological Investigation on the Friction and Wear Behaviors of Biogenic Lubricating Greases in Steel–Steel Contact by Acar, Nazli, Franco, José M., Kuhn, Erik, Gonçalves, David E. P., Seabra, Jorge H. O.

“…The applications of biogenic lubricating greases to machine elements play important roles in the reduction of friction energy and minimizing wear in a…”
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Tribological properties of hexagonal boron nitride nanoparticles or graphene nanoplatelets blended with an ionic liquid as additives of an ester base oil by Liñeira del Río, José M., López, Enriqueta R., Gonçalves, David E. P., Seabra, Jorge H. O., Fernández, Josefa

“…Antifriction synergies between an ionic liquid (IL) and nanopowders as additives of an ester base oil were analysed at rolling conditions. For this aim, two…”
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Torque loss in a gearbox lubricated with wind turbine gear oils by Gonçalves, David E. P., Fernandes, Carlos M. C. G., Martins, Ramiro C., Seabra, Jorge H. O.

“…ABSTRACT In this study, four different fully formulated ISO VG 320 wind turbine gear oils were select: a mineral oil‐based, a polyalphaolefin‐based, an…”
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An Experimental Study on Starved Grease Lubricated Contacts by Gonçalves, David, Campos, Armando, Seabra, Jorge

“…The film thickness of a ball-on-disc contact lubricated with four greases of different formulations was measured under different operating conditions until…”
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Synergistic Effects of Functionalized WS[sub.2] and SiO[sub.2] Nanoparticles and a Phosphonium Ionic Liquid as Hybrid Additives of Low-Viscosity Lubricants by Liñeira del Río, José M, Fernandes, Carlos M. C. G, Gonçalves, David E. P, Seabra, Jorge H. O

“…This research shows the antifriction and antiwear synergies between a phosphonium ionic liquid (IL) and f-WS[sub.2] and f-SiO[sub.2] nanoparticles (NPs) as…”
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Tribological enhancement of potential electric vehicle lubricants using coated TiO2 nanoparticles as additives by Liñeira del Río, José M., Mariño, Fátima, López, Enriqueta R., Gonçalves, David E.P., Seabra, Jorge H.O., Fernández, Josefa

“…[Display omitted] •Oleic acid coated TiO2 nanoparticles were synthetized.•PAO8 + 0.35 wt% TiO2-OA nanolubricant was the optimal nanolubricant.•Maximum friction…”
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Effect of the addition of coated SiO2 nanoparticles on the tribological behavior of a low-viscosity polyalphaolefin base oil by Mariño, Fátima, Liñeira del Río, José M., Gonçalves, David E.P., Seabra, Jorge H.O., López, Enriqueta R., Fernández, Josefa

“…This work reports tribological properties of PAO6 containing SiO2 nanoparticles modified with stearic-acid (SiO2-SA) as additives at concentrations (0.05,…”
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Experiments and finite element analysis on a hybrid polymer gear rack by Hooton, James D.S., Gonçalves, David E.P., Fernandes, Carlos M.C.G.

“…This article presents the results of experiments and finite element analysis on a hybrid polymer gear concept. The study aimed to investigate the effectiveness…”
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Tribological performance of green nanolubricants using functionalized CaCO3 nanoparticles by Liñeira del Río, José M., Fernandes, Carlos M.C.G., Gonçalves, David E.P., Seabra, Jorge H.O.

“…In response to the mounting concern over environmental pollution and the depletion of petroleum reserves, biolubricants have emerged as a promising alternative…”
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Lubricant properties of trimethylolpropane trioleate biodegradable oil: High pressure density and viscosity, film thickness, Stribeck curves and influence of nanoadditives by Guimarey, María J.G., Gonçalves, David E.P., Liñeira del Río, José M., Comuñas, María J.P., Fernández, Josefa, Seabra, Jorge H.O.

“…[Display omitted] •TMPTO viscosity at 150 MPa is around seven times higher than that at 0.1 MPa.•The pressure-viscosity coefficient for TMPTO is close to those…”
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