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Ileana Nicoleta Popescu   Dr.  Other 
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Ileana Nicoleta Popescu published an article in April 2018.
Top co-authors
Vasile Bratu

23 shared publications

Valahia University of Targoviste, Faculty of Materials Engineering and Mechanics, Department of Materials Engineering, Mechatronics and Robotics 13 Aleea Sinaia Steet, Targoviste, Romania

Ruxandra Vidu

17 shared publications

Department of Electrical Engineering and Computer Science, University of California, Davis, CA 95616, USA

18
Publications
10
Reads
0
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11
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Publication Record
Distribution of Articles published per year 
(2013 - 2018)
Total number of journals
published in
 
8
 
Publications See all
Article 0 Reads 0 Citations Compaction Behaviour Modelling of Metal-Ceramic Powder Mixtures. A Review Ileana Nicoleta Popescu, Ruxandra Vidu Published: 01 April 2018
Scientific Bulletin of Valahia University - Materials and Mechanics, doi: 10.1515/bsmm-2018-0006
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Powder mixtures compaction behavior can be quantitatively expressed by densification equations that describe the relationship between densities - applied pressure during the compaction stages, using correction factors. The modelling of one phase (metal/ceramic) powders or two-phase metal-ceramic powder composites was studied by many researchers, using the most commonly compression equations (Balshin, Heckel, Cooper and Eaton, Kawakita and Lüdde) or relative new ones (Panelli - Ambrózio Filho, Castagnet-Falcão- Leal Neto, Ge Rong-de, Parilák and Dudrová, Gerdemann and Jablonski. Also, for a better understanding of the consolidation process by compressing powder blends and for better prediction of compaction behavior, it's necessary the modeling and simulation of the powder pressing process by computer numerical simulation. In this paper are presented the effect of ceramic particles additions in metallic matrix on the compressibility of composites made by P/M route, taking into account (a) the some of above mentioned powder compression equations and also (b) the compaction behavior modeling through finite element method (FEM) and discrete element modeling (DEM) or combined finite/ discrete element (FE/DE) method.
Article 0 Reads 0 Citations Densification Mechanism, Elastic-Plastic Deformations and Stress-Strain Relations of Compacted Metal-Ceramic Powder Mixt... Ileana Nicoleta Popescu, Ruxandra Vidu Published: 01 April 2018
Scientific Bulletin of Valahia University - Materials and Mechanics, doi: 10.1515/bsmm-2018-0001
DOI See at publisher website ABS Show/hide abstract
The basic purpose of compaction is to obtain a green compact with sufficient strength to withstand further handling operations. The strength of green compact is influenced by the characteristics of the powders (apparent density, particle size and shape, internal pores etc.), the processing parameters (applied force, pressing type, and temperature) and testing conditions (strain rate etc.) Successful powder cold compaction is determined by the densification and structural transformations of powders (metallic powders, ceramic powders and metal-ceramic powder mixtures) during the compaction stages. In this paper, for understanding the factors that determine a required strength of compacted metal-ceramic powder mixtures, we present the densification mechanisms of different mixtures according to densification theories of compaction, the elastic-plastic deformations of mixture powders, the stressstrain relations and the relaxation behavior of compacted metal-ceramic composite parts and the particularities of each of them.
Article 0 Reads 0 Citations Porous Metallic Biomaterials Processing (Review) Part 1: Compaction, Sintering Behavior, Properties and Medical Applicat... Ileana Nicoleta Popescu, Ruxandra Vidu, Vasile Bratu Published: 01 October 2017
Scientific Bulletin of Valahia University - Materials and Mechanics, doi: 10.1515/bsmm-2017-0015
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Over the last few decades, researchers has been focused on the study of processing using different methods of new biocompatible and/or biodegradable materials such as permanent or temporary medical implants in reconstructive surgery. The advantages of obtaining biomedical implants by Powder Metallurgy (P/M) techniques are (i) obtaining the near-net-shaped with complex forms, (ii) making materials with controlled porosity or (iii) making mechanically resistant sintered metallic materials used as reinforcing elements for ceramic/polymeric biocompatible materials. In this first part of the 2-part review, the most used and newest metallic biomaterials obtained by P/M methods are presented, along with their compaction and sintering behavior and the properties of the porous biomaterials studied in correlation with the biomedical domain of application.
Article 0 Reads 0 Citations Compaction of Metal-Ceramic Powder Mixtures. Part.2 Ileana Nicoleta Popescu, Ruxandra Vidu, University of Califo... Published: 15 August 2017
Journal of the American Romanian Academy of Arts and Sciences, doi: 10.14510/araj.2017.4124
DOI See at publisher website
Article 0 Reads 0 Citations Compaction of Metal-Ceramic Powder Mixture. Part.1 Ileana Nicoleta Popescu, Ruxandra Vidu Vidu Published: 15 August 2017
Journal of the American Romanian Academy of Arts and Sciences, doi: 10.14510/araj.2017.4123
DOI See at publisher website
Article 7 Reads 0 Citations Structural Aspects Revealed by X-Ray Diffraction for Aluminum Alloys 2024 Type Florina Violeta Anghelina, Ionica Ionita, Dan Nicolae Ungure... Published: 01 August 2017
Key Engineering Materials, doi: 10.4028/www.scientific.net/kem.750.20
DOI See at publisher website
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