Search Results - "Iankov, Roumen"

Methodology for Uncertainty Estimation of Long-Term Environmental Noise Measurements by Mihajlov, Darko, Prascevic, Momir, Raos, Miomir, Iankov, Roumen

“…The ISO 1996 series harmonize the methods for the description, measurement and assessment of environmental noise from all source types. In addition, the…”
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Synthesis and Characterization of Nanocrystalline Boron-Nitride Thin Films by Ion Milling and Thermal Treatment for Tribological Coatings: An Approach to Quantifying the Growth Dynamic Process by Monezi, Carlos Alberto, Grigorov, Korneli Grigoriev, Tsanev, Aleksandar, Godoy, Jr, Armstrong, Couto, Antonio Augusto, Lima, Arnaldo Oliveira, Avdeev, Georgi, Iankov, Roumen, Massi, Marcos

“…Hexagonal boron-nitride nanoparticle coating was deposited on AISI 1045 steel surface. The deposition process included a transformation of B-containing thin…”
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Study of the mechanical properties of single- layer and multi-layer metallic coatings with protective-decorative applications by Cherneva, Sabina, Guergova, Desislava, Iankov, Roumen, Stoychev, Dimitar

“…Single thin coating of matt nickel (N imat ), a mirror bright copper (Cu bright ), a mirror bright nickel (Ni bright ) and their combinations were…”
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Evaluation by nanoindentation of technological products manufactured by pulse injection molding process by Natova, Margarita, Ivanov, Ivan, Cherneva, Sabina, Datcheva, Maria, Iankov, Roumen

“…During conventional polymer injection molding, flow- and weld lines can arise at the molded parts caused by disturbed polymer melt flow when it crosses…”
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Indentation hardness and modulus of electrochemically deposited triple protective-decorative Cu-Ni-Cr system by Datcheva, Maria, Chalakova, Gergana, Nikolov, Antonio, Dimitrova, Rayna, Iankov, Roumen, Kamburov, Valentin, Guergova, Dessislava, Stoyanova, Emilia, Stoychev, Dimitar

“…With respect to the corrosion-protective and decorative characteristics of the Cu-Ni-Cr systems the advance of the technology resulted in products covering the…”
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Diffusion-alloying sintering of Cr–Mo pre-alloyed iron powders with carbon: The effect of the carbon introduction method on the sinter’s properties by Anestiev, Lubomir, Georgiev, Jordan, Valkanov, Seryozha, Selecká, Marcela, Cherneva, Sabine, Iankov, Roumen

“…The influence of the carbon introduction method on the microstructure and the mechanical properties of sinters produced from iron-based powders by…”
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Nanoindentation investigation of mechanical properties of ZrO2, ZrO2–Y2O3, Al2O3 and TiO2 thin films deposited on stainless steel OC 404 substrate by spray pyrolysis by Cherneva, Sabina, Iankov, Roumen, Radic, Nenad, Grbic, Bosko, Stoychev, Dimitar

“…•ZrO2, ZrO2–Y2O3, Al2O3 and TiO2 films were deposited by spray pyrolysis.•Surface morphology and structure of the films were characterized via SEM and…”
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Investigation of mechanical and physicochemical properties of clinically retrieved titanium-niobium orthodontic archwires by Stoyanova-Ivanova, Angelina, Cherneva, Sabina, Petrunov, Vladimir, Petrova, Violeta, Ilievska, Ivana, Mikli, Valdek, Iankov, Roumen

“…Most of the orthodontic archwires used in the clinical practice nowadays contain nickel (Ni), however, many patients, especially kids, are allergic to Ni. One…”
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Investigation of mechanical and physicochemical propertiesof clinically retrieved titanium-niobium orthodontic archwires by Stoyanova-Ivanova, Angelina, Cherneva, Sabina, Petrunov, Vladimir, Petrova, Violeta, Ilievska, Ivana, Mikli, Valdek, Iankov, Roumen

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Investigation of the mechanical properties of electrochemically deposited Au-In alloy films using nano-indentation by Cherneva, Sabina, Iankov, Roumen, Georgiev, Martin, Dobrovolska, Tsvetina, Stoychev, Dimitar

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Nano-indentation investigations of the mechanical properties of thin TiO2, WO3 and their composites layers, deposited by spray pyrolysis by Cherneva, Sabina, Iankov, Roumen, Radic, Nenad, Grbic, Bosko, Datcheva, Maria, Stoychev, Dimitar

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Virtual modeling of residual stress in drawn wire due to the skin pass effect by Iankov, Roumen

“…The wire drawing technological process is wide use in industry. The effect of skin‐pass is apply for reduction of residual stress in final product. The finite…”
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Numerical investigation of microstructure evolution in metal forming processes by Bontcheva, Nikolina, Petzov, Georgi, Iankov, Roumen

“…Grain size evolution and phase transformation during metal forming processes is investigated numerically by means of the Finite element method. Appropriate…”
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