Time filter

Source Type

Abullah Z.T.,Wuhan University of Technology | Abullah Z.T.,Institute of Technology Baghdad | Guo S.S.,Wuhan University of Technology | Yun S.B.,Wuhan University of Technology
IOP Conference Series: Materials Science and Engineering | Year: 2015

End-of-life scrap steel such as vehicles bulks and bodies, steel wheel and shells are easily land filled at the end-of-life when treated in a developing country with non-industrial infrastructure. Research idea is about composite shape steel remanufacturing to be sheet steel for construction application through nested recovered pieces of scrap steel within new sheet steel base to meet innovation value creation of remanufactured steel and innovation eco-design of steel products to close supply chain through linkage developed and developing countries of non-industrial infrastructure economy. That can be satisfied through comprehensive business- education-training model conduction firstly at the developing countries to reduce costs and change the intensive labour remanufacturing paradigm collaboratively. Sustainable remanufacturing business model can be applied based on infrastructure of educational institutions such as institutes of technology to adopt environmental, economic, and social developments as triple bottom line sustainability. Such innovation value creation is driven by eco-design and eco-innovation enabling where the meet to deliver human development, employment, and education conscious environment and bench mark recommendations of development directions for upgrading to apply business that allows eco-societies to emerge, through cooperative steel scrap processing. © Published under licence by IOP Publishing Ltd.


Slave D.D.,Polytechnic University of Bucharest | Gales L.N.,Oncologic Institute Prof Dr Al Trestioreanu | Totu E.E.,Polytechnic University of Bucharest | Al-Ani H.N.A.,Polytechnic University of Bucharest | And 3 more authors.
Revista de Chimie | Year: 2016

This study was conducted in order to applicability of magnetic nanoparticles in order to reduce bio burdened surface water for drinking purposes. Ferromagnetic nanoparticles were obtained by co-precipitation method Cold salts based on iron, cobalt and nickel in strong basic medium. These magnetic nanoparticles have been used in various experiments which was intended to reduce the biomass content of a surface water potable purposes. Efficient use of nanoparticles in the treatment process was checked by spectrophotometric analysis, titration and microscopic analysis.


Aboud W.S.,National University of Malaysia | Aboud W.S.,Institute of Technology Baghdad | Haris S.M.,National University of Malaysia | Yaacob Y.,National University of Malaysia
Journal of Zhejiang University: Science C | Year: 2014

The suspension system is a key element in motor vehicles. Advancements in electronics and microprocessor technology have led to the realization of mechatronic suspensions. Since its introduction in some production motorcars in the 1980s, it has remained an area which sees active research and development, and this will likely continue for many years to come. With the aim of identifying current trends and future focus areas, this paper presents a review on the state-of-the-art of mechatronic suspensions. First, some commonly used classifications of mechatronic suspensions are presented. This is followed by a discussion on some of the actuating mechanisms used to provide control action. A survey is then reported on the many types of control approaches, including look-ahead preview, predictive, fuzzy logic, proportional-integral-derivative (PID), optimal, robust, adaptive, robust adaptive, and switching control. In conclusion, hydraulic actuators are most commonly used, but they impose high power requirements, limiting practical realizations of active suspensions. Electromagnetic actuators are seen to hold the promise of lower power requirements, and rigorous research and development should be conducted to make them commercially usable. Current focus on control methods that are robust to suspension parameter variations also seems to produce limited performance improvements, and future control approaches should be adaptive to the changeable driving conditions. © 2014, Journal of Zhejiang University Science Editorial Office and Springer-Verlag Berlin Heidelberg.


Haris S.M.,National University of Malaysia | Aboud W.S.,National University of Malaysia | Aboud W.S.,Institute of Technology Baghdad
Proceedings of the SICE Annual Conference | Year: 2013

Difficulties in vehicle suspension design arise from conflicting performance requirements, widely varying operating mode dynamics and uncertainties in the system model. To overcome these problems, in this work, a weighted multiple model adaptive control scheme is proposed for a mechatronic active suspension system. Candidate controllers corresponding to four operating mode conditions were optimally designed a priori. A multicontroller generates a control input made up of the sum of weighted values of all candidate controllers. The control system was designed within the framework of Adaptive Mixing Control, for which some stability criteria have been established. Simulation tests showed that the system produces significantly improved performance compared to passive suspension systems.


Aboud W.S.,National University of Malaysia | Haris S.M.,National University of Malaysia | Yaacob Y.,Institute of Technology Baghdad
ICIC Express Letters | Year: 2014

Difficulties in vehicle suspension design arise from conflicting performance requirements, widely varying operating mode dynamics and uncertainties in the system model. To overcome these problems, in this work, a weighted multiple model adaptive control scheme is proposed for a mechatronic suspension system. Proportional-Integral- Derivative (PID) Candidate controllers corresponding to four operating mode conditions were optimally designed a priori. A multicontroller generates a control input made up of the sum of weighted values of all candidate controllers. The control system was designed within the framework of Adaptive Mixing Control, for which some stability criteria have been established. Simulation tests showed that the system produces significantly improved performance compared with passive suspension systems. © 2014 ICIC International.


Siba M.A.,Institute of Technology Baghdad | Wan Mahmood W.M.F.,National University of Malaysia | Nuawi M.Z.,National University of Malaysia | Rasani R.,National University of Malaysia
International Journal of Mechanical and Mechatronics Engineering | Year: 2015

Flow velocity and pressure are two related phenomena in the flowing fluid in a pipe containing an orifice. In this study, the focus will be on the pressure which is known to researchers under variety of names such as pressure distribution, pressure fluctuation, static pressure, pressure loss, or line pressure. This pressure (not the dynamic pressure) is triggered by the disturbance of the flow passed the orifice as the flow contract spinning, rotation, and circulation through which the flow transiently causes pressure on the wall which increasingly becomes a real concern to the designers of piping circuit of nuclear plant, turbines, or, more importantly, the flow measurement. Navier-Stocks equations have been employed to describe the velocity, pressure, stress, vorticity, strain, and total deformation using commercial CFD code ANSYS for incompressible fluid. The pressure fluctuation in conjunction with flow velocity was studied at three aspect ratios of 0.2, 0.4, and 0.6 at Reynolds number of 10000, 20000, and 30000. The study shows a strong correlation between the flow velocity (directly related to Reynolds number) and both the pressure and the stress acting on the wall. The axial maximum magnitude of the velocity and pressure appear around the orifice plate and both diminish beyond that. Vorticity and flow velocity are well correlated and are in good agreement with previous studies. The maximum stress, strain, and total deformation have powerful effect on wall at aspect ratio of 0.2 while this effect is almost nullified when the aspect ratio is higher. The study adds to the body of knowledge better understanding to the effect of higher Reynolds numbers and higher aspect ratios. © April 2015 IJENS.


Modrogan C.,Polytechnic University of Bucharest | Miron A.R.,Polytechnic University of Bucharest | Pincovschi I.,Polytechnic University of Bucharest | Costache C.,Polytechnic University of Bucharest | Kamar F.H.,Institute of Technology Baghdad
Revista de Chimie | Year: 2015

The generation of liquid effluents containing heavy metal residues from industrial activities presents a potential hazardousness for environment and human health. The extraction of Zn (II), Cu (II) and Cd (II) from aqueous solutions was performed using solvents corresponding from both efficient and economic point of view. After the preliminary studies and taking into account the literature indications, the following solvents have been experimented: DEHPA (di 2 ethylhexyl phosphoric acid) with TOPO (tri-n-octylphosphine oxide) and Cyanex 272 (di 2,4,4trimetylpentyl phosphinic acid).


Kamar F.H.,Polytechnic University of Bucharest | Kamar F.H.,Institute of Technology Baghdad | Nechifor A.C.,Polytechnic University of Bucharest | Mohammed A.A.,University of Baghdad | And 2 more authors.
Revista de Chimie | Year: 2015

In this study dry walnut shells were used as adsorbent to remove of Pb(II) and Cd(II) ions from aqueous solution through batch adsorption of single component. An investigation was carried out to identify the effect of pH, initial concentration of the heavy metal's ions, contact time, dose and size diameter of adsorbent on the removal efficiency at 25 C°. Isotherm adsorption parameters were determined by using both Langmuir and Freundlich models. Two simplified kinetic models including a pseudo-first-order equation and pseudosecond-order equation were selected to follow the adsorption process. Results showed that the maximum removal efficiency of Pb(II) and Cd(II) ions are 86.16% and 72.35% respectively in the best conditions. The experimental data fitted better to the Langmuir isotherm model than to Freundlich isotherm model. The experimental data proved that the adsorption kinetic of Pb(II) and Cd(II) ions could be described by a pseudo-second order model.


Raddaha N.S.J.,Friedrich - Alexander - University, Erlangen - Nuremberg | Raddaha N.S.J.,Institute of Technology Baghdad | Seuss S.,Friedrich - Alexander - University, Erlangen - Nuremberg | Boccaccini A.R.,Friedrich - Alexander - University, Erlangen - Nuremberg
Key Engineering Materials | Year: 2015

This study presents experimental results on the electrophoretic deposition (EPD) of chitosan/halloysite nanotube/titanium dioxide composite coatings based on the Taguchi design of experiments (DOE) approach. Taguchi array of L18 type with mixed levels of the control factor was used to study the influence of EPD parameters, including halloysite nanotubes concentration, electric voltage and deposition time, on deposition yield. For identifying the significant factors that affected the deposition yield, multivariate analysis of variance (MANOVA) and regression analysis based on partial least-square method were used. The coatings were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy analyses, respectively. It was found that the deposition time has significantly influenced the deposition rate but the halloysite nanotube concentration and the applied voltage have the smallest effect on the deposition. The optimum condition for high yield of deposition with low standard deviation is achieved when the concentration of halloysite nanotubes is 0.3g/L and the applied voltage is 40volt with 300sec. as a deposition time. The predicted EPD conditions were verified by experiments and qualitative agreement was obtained. © (2015) Trans Tech Publications, Switzerland.


Al Gizi A.J.H.,University of Technology Malaysia | Al Gizi A.J.H.,Institute of Technology Baghdad | Mustafa M.W.,University of Technology Malaysia | Al-geelani N.A.,University of Technology Malaysia | Alsaedi M.A.,University of Technology Malaysia
Applied Soft Computing Journal | Year: 2015

We report a novel design method for determining the optimal proportional-integral-derivative (PID) controller parameters of an automatic voltage regulator (AVR) system, using a combined genetic algorithm (GA), radial basis function neural network (RBF-NN) and Sugeno fuzzy logic approaches. GA and a RBF-NN with a Sugeno fuzzy logic are proposed to design a PID controller for an AVR system (GNFPID). The problem for obtaining the optimal AVR and PID controller parameters is formulated as an optimization problem and RBF-NN tuned by GA is applied to solve the optimization problem. Whereas, optimal PID gains obtained by the proposed RBF tuning by genetic algorithm for various operating conditions are used to develop the rule base of the Sugeno fuzzy system and design fuzzy PID controller of the AVR system to improve the system's response (∼0.005 s). The proposed approach has superior features, including easy implementation, stable convergence characteristic, good computational efficiency and this algorithm effectively searches for a high-quality solution and improve the transient response of the AVR system (7E-06). Numerical simulation results demonstrate that this is faster and has much less computational cost as compared with the real-code genetic algorithm (RGA) and Sugeno fuzzy logic. The proposed method is indeed more efficient and robust in improving the step response of an AVR system. © 2014 Elsevier B.V. All rights reserved.

Loading Institute of Technology Baghdad collaborators
Loading Institute of Technology Baghdad collaborators