Farag Mahel

University of Technology, Iraq · Department of Electro-Mechanical Engineering

The performance of the engine oil is affected over time by the different parameters such as combustion products such as soot particles, carbon, unburned fuel, and unburned hydrocarbon (UHC). The engine oil degradation was analysed by using Transmission Electron Microscopy (TEM), Thermogravimetric Analysis (TGA) and Fourier Transform Spectrometry (F...

The Linear elevators driven by linear motors have recently been widely used because they produce direct motion to transfer people between floors without using ropes, rollers, gears, and counterweights. However, these elevators usually suffer from the production of ripple force when traveling through floors and this makes its application to elevator...

The hydraulic elevator is both a cost-effective system and results in extremely clean building exterior lines since the usual penthouse-type machine room is eliminated. Without the need for wires, counterweights, or pulleys, this elevator can transfer people between levels. One of the most significant factors to consider when designing people's ele...

Traditional hydraulic cylinders are widely used in industry as load lifting tools. There is difficulty in employing these cylinders in narrow installation space like building elevators as well as they require a long working stroke, so solving this problem requires using the telescopic hydraulic cylinder instead. This cylinder is a unique hydraulic...

Next generation of fuels and injection technology system are growing attention in the transportation sector. The effects of castor oil of biodiesel (C30D) and two conditions (500 bar and 1000 bar) of fuel injection pressure (FIP) on soot nanoparticles characteristics and NOX emissions were performed in a direct injection (DI) diesel engine. The res...

Multiple injection strategies have been used in diesel engines to eliminate particulate emissions and increase the exhaust gas temperature. The effects of a post-injection (PI) strategy on engine performance, emissions, and soot nanoparticle characteristics in a common-rail (CR) diesel engine fueled with alternative fuels and diesel fuel were inves...

The mechanical properties play an important role in the selection of suitable material in the manufacturing of boats. In this paper, the effect of glass fiber orientations and the fillers weight fraction on the mechanical properties of un saturated polyester composite material were studied. The glass fibers were used with (0/0, 0/90, 45/45) angles....

Due to the industrial development and the growing modernity, the elevator systems have become indispensable in many multi-story buildings. When electrical elevators are employed to transport people, riding comfort becomes a very important issue, especially when high-speed elevators are used in high-rise buildings. The elevator systems should provid...

The effect of brake pad wear on the electromechanical disc brake system response using MATLAB/Simulink software was investigated in this paper. The analysis of the pad wear involves building thermal model and electromechanical brake model, and calculating the required braking force at a constant and variable coefficient of friction between the pad...

Taguchi method and a regression model have been developed to study the effect of AL% filler contents on the glass/polyester honeycomb sandwich panel behavior subjected to impact load. Using the standard Taguchi’s array L9, analysis of means (ANOM) including main effects of S/N ratio and experimental response, ANOVA was used to determine the optimum...

The mechanical properties of the dental are very important in order to make the proper selection of the right material to be used by the dentist. The effect of natural filler on the mechanical properties of PMMA used for denture manufacture has been investigated. Three natural materials, which are Siwak, Pomegranate, and Olive, are selected. The fi...

The thermal and acoustic isolation properties of unsaturated polyester composites reinforced by palm waste filler have been experimentally investigated. The composites have been prepared using hand lay-up technique with filler weight fraction of (0%, 3%, 5% and 7%). Three types of palm waste that (Date seed, old leaf bases and petiole) were ground...

This paper addresses experimentally the performance of mechanical and physical properties of unsaturated polyester composite reinforced by natural fillers. Three samples of date palm waste from trees of Baghdad region that (Date seed, old leaf bases and petiole) be selected. The samples were ground and sieved separately to produce the natural fille...

In recent decades, the demand for a linear motor has increased in various applications, due to its ability to develop a linear motion directly. One of the significant problems facing the operation of the linear motor is the presence of force ripple caused by the irregular magnetic field of the permanent magnets. Accordingly, a developed single-side...

Linear motor offers several features in many applications that require linear motion. Nevertheless, the presence of cogging force can deteriorate the thrust of a permanent magnet linear motor. Using several methodologies, a design of synchronous single sided linear iron-core motor was proposed. According to exact formulas with surface-mounted magne...

The efficiency of the solar PV panel decreases significantly as the PV panel’s operating temperature increases. There are many cooling techniques might be suitably deal with this problem to enhance the solar panel efficiency. The presented cooling technique used for solving the PV panel’s temperature elevation is an active close loop cooling system...

Hydraulic actuators are one of the most viable choices due to their high power-to-weight ratio, low cost, robustness, fast response and great power supply. The present work focuses on building an elevator prototype model simulates real hydraulic elevator. This model consists of hydraulic parts (double-acting hydraulic cylinders, pump, valves, pipel...

The fall angle of sun rays on the surface of a photovoltaic PV panel and its temperature is negatively affecting the panel electrical energy produced and efficiency. The fall angle problem was commonly solved by using a dual-axis solar tracker that continually maintains the panel orthogonally positioning to the sun rays all day long. This leads to...

Pneumatic vacuum elevator (PVE) has become a popular choice for our homes and low-rise buildings in recent years. The Pneumatic vacuum elevator represents a new concept evolved from the idea of pressed air applied in the pneumatic elevator replaced by a vacuum air idea. The pneumatic vacuum elevator is able to transport people between building floo...

Experimental investigations had been done in this work to demonstrate the effect of graphite filler contents on the dynamic behavior of (30%) weight fraction glass-polyester sandwich panel under low velocity impact. The composite sandwich panels are manufactured using the honeycomb core and laminated composite face sheets. The wet hand layup techni...

Experimental investigations had been done in this work to demonstrate the effect of aluminum filler contents on the dynamic behavior of (30%) weight fraction glass-polyester sandwich panel under low velocity impact. The composite sandwich panels are manufactured using the honeycomb core and laminated composite face sheets. The wet hand layup techni...

In IRAQ, the air conditioners are the principal cause of high electrical demand. In summer, the outer temperature sometimes exceeds 500C which significantly effects on the A/C system performance and power consumed. In the present work, the improvement in mechanical and electrical performance of split A/C system is investigated experimentally and an...

In this paper, the performance improvement of a split air conditioning system has been experimentally investigated to be efficiently utilized in the hot and dry weathers. To examine these improvements, a hybrid proportional integral differential controller was designed and implemented. This controller depends upon dual Proportional Integral Deferen...

This paper focus on the integration of wireless technology and CAD/CAM system for CNC workshop development. A specific case study is described a system based on embedded wireless device and Internet of Things (IoT) concept with Bezier techniques for the proposed model. The focus of the case study is to show a complete stage of manufacturing process...

This paper aims to explore the theories and techniques behind procedures of wireless controller system for mini CNC milling machine. The developed controller enables the machine tool to be controlled based on wireless communication and NC data generated from CAD/CAM systems. Then, a computer vision component using a web camera is proposed for the N...

This paper focus on the integration of wireless technology and CAD/CAM system for CNC workshop development. A specific case study is described a system based on embedded wireless device and Internet of Things (IoT) concept with Bezier techniques for the proposed model. The focus of the case study is to show a complete stage of manufacturing process...

Neural networks are complex nonlinear models; this characteristic enables them to be used in nonlinear system modeling and prediction applications. The estimation and prediction are important roles in the communication system. The proposed approach based on the Wavelet Neural Networks (WNNs) uses morlet as an activation function in the hidden layer...

In the present work the effect of residual stress on the fatigue behavior of 2024 Aluminum alloy was studied experimentally and numerically using finite element method with aid of ANSYS-11 software. All the test specimens treated by annealing before any process to remove the internal stresses due to cold work. Residual stresses were imparted to the...