Tareq M.A. Al-Quraan
@bau.edu.jo
Technical Sciences Department
Al-Balqa Applied University, Ma’an College
EDUCATION
Kiev International University of civil Aviation- Ukraine 1999.
PH.D in Engineering Sciences Friction and Wear in Machinery.
Kiev International University of civil Aviation- Ukraine 1994.
Honors Diploma in Mechanical Engineering.
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Tareq M. A. Al-Quraan, Fadi Alfaqs, Jamil Haddad, Viktor Vojtov, Anton Voitov, Andrey Kravtsov, Oleksandr Miroshnyk, and Andrii Kondratiev
MDPI AG
Based on the analysis of standards for the testing of lubricants, both liquid and plastic, on a four-ball tribometer, and the analysis of the parameters by which lubricants are evaluated, this paper proposes a methodology and an integral parameter for the estimation of tribological properties. The methodological approach proposed in this paper allows for the integration of a variety of parameters provided in the standards for the testing of lubricants into one indicator. Herein, we show that the developed technique is based on the energy approach and takes into account the specific wear work of the test material (steel balls) in the lubricating medium to be investigated. The results of laboratory tests of a wide range of lubricants are presented: hydraulic fluids, motor and transmission oils of various purposes and classifications. It is shown that the magnitude of the integral parameter can be used to assess the effectiveness of anti-wear and anti-scuff additives in base lubricants, as well as the ranges of their applications. This allows for differentiation and quantitative evaluation of the effectiveness of such additives. The obtained results allow us to state that all tests according to the developed method are reproducible and homogeneous, which is confirmed using the Cochran criterion. The coefficient of variation during testing does not exceed 18%. We show that the presented methodology and the integral parameter can be used in the first stage of the laboratory selection tests of new lubricants and additives of various origins, reducing the costs of their development and implementation.
Jamil Haddad, Fadi Alfaqs, Tareq Al-quraan, and Ibrahim I Ikhries
Dnipro University of Technology
Purpose. Current research focuses on studying experimentally various parameters affecting the particle size produced in a vibrating jaw crusher developed and implemented at Al-Balqa Applied University. The main purpose is to find the optimal conditions at which the jaw crusher under study works. Methods. The jaw crusher angle and rotating mass type are considered to study all particle sizes and reduction ratios obtained for three different motor operation speeds: 1500, 2000, and 2500 rpm. Coarse aggregate weighing 900 g with 26 mm particle size is fed into the jaw crusher, which produces several particle sizes (19, 12.5, 9.5, 4.75, and less than 4.75 mm). Furthermore, the mass of the particles is measured and the particle size reduction is calculated. Findings. It has been found that the jaw crusher angle, rotating mass type, and the motor operation speed play an important role in both reducing the amount of mass and reducing the size of each particle produced. In addition, it has been determined that operation at a speed of 2000 rpm provides a significant change in both mass and size reduction of each particle size considered. Originality. The originality of this research lies in its experimental investigation of the effects of various parameters on particle size reduction in a vibrating jaw crusher, as well as in the introduction of a new design that uses one motor to drive two plates operating at different speeds and in opposite directions. Practical implications. The findings can be used to optimize the design and operation of jaw crushers in various industries, including metallurgical, quarry, and mining industries, where these crushers are widely used. The results of this study can also serve as a basis for future research on particle size reduction in other types of crushers and milling equipment.
Tareq M. A. Al-Quraan, Olha Ilina, Mukola Kulyk, Rudolf Mnatsakanov, Oksana Mikosianchyk, and Volodumur Melnyk
Hindawi Limited
Self-organization mechanisms of metastable dissipative structures during friction depending on base and oil functional additives for hypoid gears are considered. Research was conducted on a software-hardware complex with simulation of gears’ operation in rolling with slipping conditions in start-stop mode. Indicators of formation of wear-resistant dissipative structures include the following: improvement of antifriction characteristics, lubricant boundary layers’ formation, contact surfaces’ strengthening, and formation of heterogeneous deformation microrelief with a fine-grained structure. The formation of chemically modified boundary layers on 90% of the contact area of tribo-coupling elements ensures an increase in the wear resistance of leading and lagging surfaces by 2 and 1.4 times, respectively. The sclerometry method was used to establish that the formation of dissipative structures when lubricating tribo-coupling elements with various transmission oils can reduce deformation processes in metal near-surface layers by 23%. Highly viscous flavored lubricant with distillate oil and additive composition ensures wear-resistant dissipative structures with active components, including oxygen, sulfur, and phosphorus.
Tareq M. A. Al-Quraan, Fadi Alfaqs, Ibrahim F. S. Alrefo, Viktor Vojtov, Anton Voitov, Andrey Kravtsov, Oleksandr Miroshnyk, Andrii Kondratiev, Pavel Kučera, and Václav Píštěk
MDPI AG
In the presented work, a methodical approach was developed for determining rational operation modes of tribosystems, taking into account their design. This approach makes it possible in the designing stage, according to the predicted operating modes, to calculate the limits and margins of stable work in operation. The definition of the robustness of the tribosystem and the criteria for assessing the robustness are formulated based on the theory of stability of technical systems. It is shown that such a methodical approach allows for determining the modes of the rational operation of the designed structures without damaging the friction surfaces. Experimental studies have proven that not all designs of tribosystems lose stability due to the appearance of friction surface burrs. There are designs where the loss of stability occurs upon the appearance of accelerated wear. The developed criteria take into account two options for the loss of stability. An experimental verification of the modes of loss of stability of tribosystems was performed by the appearance of a burr or the beginning of accelerated wear with the calculated values of the robustness criteria. The obtained results allow us to conclude that the modeling error is within 8.3–18.7%, which is a satisfactory result in the study of friction and wear processes. Robustness criteria is based on the coefficient of friction RRf and wear rate RRI, and must be used when designing new constructions of tribosystems. Theoretical calculations of such criteria and the dependence of their change on changing the predicted operating modes will allow for justifying rational operating modes within their stability.
Tareq M. A. Al-Quraan, Oleksandr Vovk, Serhii Halko, Serhii Kvitka, Olena Suprun, Oleksandr Miroshnyk, Vitalii Nitsenko, Nurul Mohammad Zayed, and K. M. Anwarul Islam
MDPI AG
The influence of reduced voltage on the service life of an induction motor is considered in this article. An algorithm for calculating the rate of thermal wear of induction motor insulation under reduced supply voltage depending on the load and the mechanical characteristics of the working machine has been developed. It determines the change in the rate of thermal wear under alternating external effects on the motor (supply voltage and load) and allows forecasting its service life under these conditions. The dependency graphs of the rate of insulation thermal wear on the motor load for various levels of supply voltage and various mechanical characteristics of working machines are provided in the work. It was determined that the rate of thermal wear of the induction motor insulation increases significantly when the voltage is reduced compared to its nominal value with nominal load on the motor. The authors propose to consider this fact for resource-saving control of the motor. The paper presents the results of experimental verification of the obtained rule for “Asynchronous Interelectro” (AI) series electric motors that confirm its accuracy. Based on the obtained correlation, the rule of voltage regulation in energy-saving operation mode has been derived. The proposed rule takes into account the thermal impact on the electric motor running in energy-saving mode and enables saving its resource, which, in turn, results in extending its service life. The research does not consider additional effects on the electric motor except the thermal one.
T.M.A. Al-Quraan, R.G. Mnatsakanov, V.V. Tokaruk, O.A. Mikosianchyk, N.M. Kichata, and N.O. Kuzin
Faculty of Engineering, University of Kragujevac
O.I. Bogdanovych, T.M.A. Al-Quraan, V.V. Tokaruk, and J.S. Haddad
Faculty of Engineering, University of Kragujevac
Mykhaylo Zagirnyak, Alexandr Salenko, Mykhailo Elizarov, Olga Chencheva, Sergey Klimenko, Al-Quraan Tareq, and Viktor Shchetynin
Private Company Technology Center
The results of theoretical and experimental studies aimed at identifying hidden defects in the structure of hard alloys and superhard composites used in the manufacture of cutting tools in order to control and predict gradual and sudden failures of cutting inserts.Damage control of cutting inserts is carried out by microscopic analysis. Deeper damage to the structure can be detected using the method of chemographic imaging. The proposed method is based on obtaining photographs of the oxidative reactions of materials of ultra-low concentrations occurring on the surface of solids under thermobaric loading.Before the moment of a sharp release of the energy of destruction, chemical processes of ultra-low concentrations are activated. Chemography allows to fix the zones where the incipient microcracks and microdefects are ready to actively develop, which can lead to the onset of macrodamage and failure to work.The chemographic image of the plate obtained as a result of the study is compared with the reference sample, as a result of which it is possible to assess the initial defect state of the material and predict the further period of the plate’s operation.The criterion for the existing defects and imperfections in the structure is the change in the blackness index of the chemographic image, the minimum value of which indicates a minimum of structural defects and internal defects in the material under study.The results allow to propose a new method for controlling the surface of cutting plates, which can be easily implemented in any machine shop, which makes its application very promising
T.M.A. Al-Quraan
Faculty of Engineering, University of Kragujevac
It has been found that empirical analysis provides a possibility to select the optimum concentration of the repair and restoring composition (RVS), addition of which to the transmission oil provides an increase in wear resistance of 42Cr4 steel under rolling and slip conditions. The structural adaptability of finely dispersed components of the friction geo-modifier RVS, boundary lubricating films and surface layers of metal under friction and under dynamic loading conditions contribute to reducing the wear of contact surfaces. It has been established that the addition of 1.5 % RVS to the lubricant provides a 17 % reduction in the wear of rolling friction pairs, provides hardening of the surface layers of the metal by 1.36 times, compared with the initial surface. The micro-hardness of the surface layers of the metal and its gradient depth distribution, the microgeometry of the surface layer formed during friction, and the formation of boundary lubricating layers on the friction-activated contact surfaces are key indicators that increase the wear resistance in friction pairs. © 201x Published by Faculty of Engineering Corresponding author: Tareq M.A. Al-Quraan Al-Balqa Applied University Ma’an College Technical Sciences Department, 19117 Al-Balqa, Jordan. E-mail: tarjorggg@bau.edu.jo
T. Alquraan, Yu. Kuznetsov, and T. Tsvyd
Elsevier BV
Abstract The operation principles of both new and improved clamping mechanisms of the CNC lathe with the automatic no–reinstallation workpiece manipulation are described in this article. The theoretical analysis of power characteristics with the spindle in rotary and non-rotary modes has been carried out with the account of unbalanced chuck jaws’ centrifugal forces. The efficiency of the new clamping mechanism at a higher spindle velocity has been justified.
RECENT SCHOLAR PUBLICATIONS
MOST CITED SCHOLAR PUBLICATIONS
Publications
1-The effect of friction and joints rigidity on the power characteristics of rotating chucks
2-Structural-Energy Characteristics of Tribotechnical Contact in Unsteady Operational Modes
3- High-speed clamping Mechanism of the CNC lathe with Compensation of Centrifugal Forces.
4-The Effect of the Slippage Degree at Rolling with Slipping on the Wear Resistance of Contact Surfaces
5-Temperature Resistance of the Boundary Lubrication Layers Under Rolling with Slippage Condition
6-A Manifestation of Non-Hydrodynamic Factors in Steady-State Conditions of Friction
7-Evaluation of Influence of the RVS Friction Geomodifier on Tribotechnical Parameters of the Contact in Non-Stationary Working Conditions.