Author

Florian Ion T. Petrescu

Bucharest Polytechnic University, Romania

64 articles in our journals

Articles where this person is an author, newest first. People are matched by their name as printed (no ORCID iD is recorded for them), not by name alone; search the name as text to find namesakes too.

Research ArticleOpen accessInverse Kinematics at the Anthropomorphic Robots, by a Trigonometric MethodRelly Victoria V. Petrescu, Raffaella Aversa, Bilal Akash et al.A robot is a machine especially programmable one through a computer capable of performing a complex series of actions in the automatic mode. Robots may be guided by a control device or external control may be incorporated in the inside. Robots can be built to take human form, but most robots are machines designed to perform a task without taking … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 2 · 27 Apr 2017 · 8,817 accessesView PDF Cite

Research ArticleOpen accessForces at Internal Combustion EnginesRelly Victoria V. Petrescu, Raffaella Aversa, Bilal Akash et al.The paper presents an algorithm to set the parameters of the dynamics of the classic mechanism the main of internal combustion. It shows the distribution of the forces (on the main mechanism of the engine) on engines with internal combustion. Dynamic, the gears can be distributed in the same way as forces. Practically, in the dynamic regimes, the velocities have … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 2 · 27 Apr 2017 · 8,325 accessesView PDF Cite

Research ArticleOpen accessAnthropomorphic Solid Structures n-R KinematicsRelly Victoria V. Petrescu, Raffaella Aversa, Bilal Akash et al.This paper presents and treats (in an original way) the specific elements of the structures of robotic solid mobile anthropomorphic type. Are "placed on the wallpaper", the geometry and kinematics of the anthropomorphic robotic solid systems, in an original vision of the authors. One presents the inverse kinematics of anthropomorphic systems, with mechanical elements and points: Geometry, cinematic, positions, displacements, … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 1 · 30 Mar 2017 · 7,775 accessesView PDF Cite

Research ArticleOpen accessInfluence of Curing Light Type and Staining Medium on the Discoloring Stability of Dental Restorative CompositeJamaluddin Syed, Ayman Al. Dharrab, Muhammad S. Zafa et al.Discoloration kinetics of 4 commercial nano-filled resin composites polymerized with LED and QTH source types in 4 different staining media held at 37°C are investigated. Quartz Tungsten Halogen (QTH) and Light Emitting Diode (LED) were used. Dental composites color change was monitored with a digital spectrophotometer at one, two and four weeks for quantitative comparison. The kinetics and intensities of … …American Journal of Biochemistry and Biotechnology, Vol. 13, Issue 1 · 21 Mar 2017 · 8,354 accessesView PDF Cite

Research ArticleOpen accessVelocities and Accelerations at the 3R Mechatronic SystemsRelly Victoria V. Petrescu, Raffaella Aversa, Bilal Akash et al.This article presents an original method to determine the speeds and accelerations to structures MP R-3 The structure of the 3R (space) are known (required) rotation speeds of the triggers and must be determined speeds and accelerations of the endeffector M. Starting from the positions of direct kinematic system MP R-3deriving these system of relations in depending on the time, … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 1 · 20 Mar 2017 · 7,963 accessesView PDF Cite

Research ArticleOpen accessYield at Thermal Engines Internal CombustionRelly Victoria V. Petrescu, Raffaella Aversa, Bilal Akash et al.The paper presents an algorithm to set the parameters of the dynamics of the classic mechanism the main of internal combustion. It shows the distribution of the forces (on the main mechanism of the engine) on engines with internal combustion. With these strong points and together with speeds of kinematic couplings shall be determined when the output of the engine … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 1 · 20 Mar 2017 · 7,970 accessesView PDF Cite

Research ArticleOpen accessSomething about the Balancing of Thermal MotorsRaffaella Aversa, Relly Victoria V. Petrescu, Bilal Akash et al.Internal combustion engines in line (regardless of whether the work in four-stroke engines and two-stroke engines Otto cycle engines, diesel and Lenoir) are, in general, the most used. Their problem of balancing is extremely important for their operation is correct. There are two possible types of balancing: Static and dynamic balance. The total static to make sure that the sum … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 1 · 15 Mar 2017 · 7,785 accessesView PDF Cite

Research ArticleOpen accessNano-Diamond Hybrid Materials for Structural Biomedical ApplicationRaffaella Aversa, Relly Victoria V. Petrescu, Antonio Apicella, Florian Ion T. PetrescuThe development of new diamond based bio-mechanically active hybrid nano-structured scaffolds for cartilage cells tissue engineering are proposed in this study. Innovative tissue engineering biomimetic materials based on hydrogel have shown attractive physical, biological and mechanical properties in several biomedical applications. A highly biocompatible novel hybrid material based on nanodiamonds and hydrophilic poly-(hydroxyl-ethyl-methacrylate) (pHEMA) is proposed. The aim of this … …American Journal of Biochemistry and Biotechnology, Vol. 13, Issue 1 · 9 Mar 2017 · 9,183 accessesView PDF Cite

Research ArticleOpen accessProcessability of Bulk Metallic GlassesRaffaella Aversa, Daniela Parcesepe, Relly Victoria V. Petrescu et al.Microfluidic Shear Flow Instabilities in Injection Molded Glassy Metal are investigated. The formation of microfluidic shear flows instabilities involving the presence of different viscosities fluids has been observed in injection molded Bulk Metallic Glasses. The complex rheology of injection molded metastable glassy metal, which has been hypothesized to induce selective clustering of atoms of different steric hindrance, is discussed. Smaller … …American Journal of Applied Sciences, Vol. 14, Issue 2 · 15 Feb 2017 · 7,487 accessesView PDF Cite

Research ArticleOpen accessKinematics and Forces to a New Model Forging ManipulatorRaffaella Aversa, Relly Victoria V. Petrescu, Bilal Akash et al.Forging manipulators have become more prevalent in the industry of today. They are used to manipulate objects to be forged. The most common forging manipulators move on a railway to have a better precision and stability. Heavy payload forging manipulators systems are normally characterized by a large load output and a large capacitive load input as well. The relationship between … …American Journal of Applied Sciences, Vol. 14, Issue 1 · 3 Jan 2017 · 8,167 accessesView PDF Cite