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Optimization Of Plasma Cutting Parameters On Dimensional Accuracy And Machining Time For Low Carbon Steel, Sami Hamood, Vian Najm Aug 2026

Optimization Of Plasma Cutting Parameters On Dimensional Accuracy And Machining Time For Low Carbon Steel, Sami Hamood, Vian Najm

Engineering and Technology Journal

This work aims to study the influence of plasma arc cutting parameters on dimensional accuracy and machining time for mild steel (1010) material with the thickness (4 mm). Selected three cutting parameters (arc current, cutting speed, and arc distance) or the experimental work. 12 tests have been performed at each test one parameter has been changed with four various levels and other parameters are constant. The influence of the cutting parameters on response results (dimensional accuracy and machining time) have been studied and analyzed by using response surface methodology (RSM) using the second-order model and main effect plot have been …

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Prediction Of Surface Roughness And Optimization Of Cutting Parameters In Cnc Turning Of Rotational Features, Yousif Shounia, Tahseen Abaas, Raed Shwaish Aug 2026

Prediction Of Surface Roughness And Optimization Of Cutting Parameters In Cnc Turning Of Rotational Features, Yousif Shounia, Tahseen Abaas, Raed Shwaish

Engineering and Technology Journal

This research presents a model for prediction surface roughness in terms of process parameters in turning aluminum alloy 1200. The geometry to be machined has four rotational features: straight, taper, convex and concave, while a design of experiments was created through the Taguchi L25 orthogonal array experiments in minitab17 three factors with five Levels depth of cut (0.04, 0.06, 0.08, 0.10 and 0.12) mm, spindle speed (1200, 1400, 1600, 1800 and 2000) r.p.m and feed rate (60, 70, 80, 90 and 100) mm/min. A multiple non-linear regression model has been used which is a set of statistical extrapolation processes to …

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Experimental Investigation Of Thermodynamics, Kinetics, And Equilibrium Of Nickel Ion Removal From Wastewater Using Zinc Oxide Nanoparticles As The Adsorbent, Shurooq Remedhan Aug 2026

Experimental Investigation Of Thermodynamics, Kinetics, And Equilibrium Of Nickel Ion Removal From Wastewater Using Zinc Oxide Nanoparticles As The Adsorbent, Shurooq Remedhan

Engineering and Technology Journal

In the present study commercial zinc oxide (ZnO) nanoparticles in the size of 30 nm were utilized as an adsorbent for the removal of Ni (II) ion from synthetic waste aqueous solution. Adsorption capacity of ZnO for removing Ni (II) ions from aqueous solutions was measured at different pH, adsorbent dose, contact time, temperature and metal ion concentration. Moreover,  adsorption isotherms, kinetics and thermodynamics were studied to understand  the  nature  and  mechanism  of  adsorption. ZnO nanoparticles were characterized by X-Ray diffract analysis(XRD),Fourier Transform Infrared Spectroscopy(FT-IR), scanning electron microscopy (SEM),energy dispersive X-ray spectroscopy(EDS) and Brunauer-Emmett-Teller (BET). The maximum amount of Ni …

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Pv/T Performance Evaluation As Electricity Generation And Hot Air Supplier For Fully And Partially Covered With Pv Modules, Jalal Jalil, Ahmed Hussein, Anwar Faisal Aug 2026

Pv/T Performance Evaluation As Electricity Generation And Hot Air Supplier For Fully And Partially Covered With Pv Modules, Jalal Jalil, Ahmed Hussein, Anwar Faisal

Engineering and Technology Journal

The solar energy system is environmentally friendly and the utilization of photovoltaic thermal collectors, (PV/T) has attracted more attention, which directly converts solar radiation into electricity and thermal energy simultaneously. This study investigated the air biased Photovoltaic thermal hybrid solar collectors, (PV/T) trend for two cases, denominate case one (PV/T system fully covered with PV modules), and case tow (PV/T system partially covered with glass). The studied parameters were solar irradiance and the air mass flow rate. The investigation has been performed in terms of outlet air temperature, electrical power, thermal and electrical efficiencies. A numerical model was developed using …

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A Comparative Study Of Various Intelligent Controllers’ Performance For Systems Based On Bat Optimization Algorithm, Luay Rasheed Aug 2026

A Comparative Study Of Various Intelligent Controllers’ Performance For Systems Based On Bat Optimization Algorithm, Luay Rasheed

Engineering and Technology Journal

The aim of this paper is to demonstrate the performance of two intelligent controllers; the proportional-integral-derivative (PID) controller, and the proportional-integral-derivative-acceleration (PIDA) controller, based on optimization algorithm for higher order systems. In this work, bat control algorithm has been utilized to find and tune the optimal weight parameters of the controllers as simple and fast tuning technique to find the best unsaturated state and smooth control action for the systems based on the intelligent controllers. The simulation results using (Matlab Package) show that both controllers with the bat control algorithm can give excellent performance but the performance of the PIDA …

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Hand Gesture Recognition Of Static Letters American Sign Language (Asl) Using Deep Learning, Abdulwahab Abdulhussein, Firas Raheem Aug 2026

Hand Gesture Recognition Of Static Letters American Sign Language (Asl) Using Deep Learning, Abdulwahab Abdulhussein, Firas Raheem

Engineering and Technology Journal

An American Sign Language (ASL) is a complex language. It is depending on the special gesture stander of marks. These marks are represented by hands with assistance by facial expression and body posture. ASL is the main communication language of deaf and people who have hard hearing from North America and other parts of the world. In this paper, Gesture recognition is proposed of static ASL using Deep Learning. The contribution consists of two solutions to the problem. The first one is resized with Bicubic static ASL binary images. Besides that, good recognition results in of detection the boundary hand …

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Point Clouds Pre-Processing And Surface Reconstruction Based On Tangent Continuity Algorithm Technique, Ali Al-Bdairy, Ahmed Al-Duroobi, Maan Tawfiq Aug 2026

Point Clouds Pre-Processing And Surface Reconstruction Based On Tangent Continuity Algorithm Technique, Ali Al-Bdairy, Ahmed Al-Duroobi, Maan Tawfiq

Engineering and Technology Journal

Pre-processing is essential for processing the row data point clouds which acquired using a 3D laser scanner as a modern technique to digitize and reconstruct the surface of the 3D objects in reverse engineering applications. Due to the accuracy limitation of some 3D scanners and the environmental noise factors such as illumination and reflection, there are some noised data points associated with the row point clouds, so, in the present paper, a preprocessing algorithm has been proposed to determine and delete the unnecessary data as noised points and save the remaining data points for the surface reconstruction of 3D objects …

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Process Capability Analysis To Assess Capacity Of A Cleaning Liquid Product With Asymmetric Tolerances, Sohaib Khlil, Huthaifa Al-Khazraji, Zina Alabacy Aug 2026

Process Capability Analysis To Assess Capacity Of A Cleaning Liquid Product With Asymmetric Tolerances, Sohaib Khlil, Huthaifa Al-Khazraji, Zina Alabacy

Engineering and Technology Journal

Process capability indices are a powerful tool used by quality control engineering to measure the degree to which the process is or is not meeting the requirements. This paper studies the application of process capability indices in the evaluation of a process with asymmetric tolerances. The analyzed collected data of the cleaning liquid “Zahi”, was used to investigate the ability of the filling process to meet the requested specifications. Matlab software was used to plot ̅ ̅ control charts, normal probability, and histogram of the data gathered from the production line and further performed statistical calculations. It was observed from …

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Prediction The Influence Of Machining Parameters For Cnc Turning Of Aluminum Alloy Using Rsm And Ann, Hind Abdulridha, Aseel Helael, Ahmed Al-Duroobi Aug 2026

Prediction The Influence Of Machining Parameters For Cnc Turning Of Aluminum Alloy Using Rsm And Ann, Hind Abdulridha, Aseel Helael, Ahmed Al-Duroobi

Engineering and Technology Journal

The main objective of this paper is to develop a prediction model using Response Surface Methodology (RSM) and Artificial Neural Network (ANN) for the turning process of Aluminum alloy 6061 round rod. The turning experiments carried out based on the Central Composite Design (CCD) of Response Surface Methodology. The influence of three independent variables such as Cutting speed (150, 175 and 200 mm/ min), depth of cut (0.5, 1 and 1.5 mm) and feed rate (0.1, 0.2 and 0.3 mm/rev) on the Surface Roughness (Ra) were analyzed through analysis of variance (ANOVA). The response graphs from the Analysis of Variance …

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Effect Of Wire Diameter, Feeding Rate, Pulse (On/Off) Time On Surface Roughness And Metal Removal Rate For Cr-Mo Steel (Scm425h) During Wire Electrical Discharge Machine (Wedm) Cutting Operation, Saad Shather, Sami Hammood, Noor Al-Huda Hussain, Noor Hasson Hasson Aug 2026

Effect Of Wire Diameter, Feeding Rate, Pulse (On/Off) Time On Surface Roughness And Metal Removal Rate For Cr-Mo Steel (Scm425h) During Wire Electrical Discharge Machine (Wedm) Cutting Operation, Saad Shather, Sami Hammood, Noor Al-Huda Hussain, Noor Hasson Hasson

Engineering and Technology Journal

Increase the demand to produce complex shapes with high quality and dimensional accuracy such as production aerospace, cars, die sinking has been leading to increase the demand to use the non- traditional cutting operations such as wire electro-discharge machine (WEDM) rather than using the traditional operations. An idea to understand the effect of wire diameter, wire feed, pulsing (on/off) time on surface roughness, and metal removal rate of Cr-Mo steel during wire electrical discharge machining was investigated. Two Steel alloy samples with dimensions of (60 x50 x 20)mm were cut into four rectangular spaces with (5x10x20)mm at one side of …

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Correlation Of Soil Liquefaction Potential Index And Geotechnical Properties For Baghdad City, Iraq, Hussein Karim, Zena Samueel, Dalia Abdul Hussein Aug 2026

Correlation Of Soil Liquefaction Potential Index And Geotechnical Properties For Baghdad City, Iraq, Hussein Karim, Zena Samueel, Dalia Abdul Hussein

Engineering and Technology Journal

This paper comprises the study and analysis of Baghdad soil for eight geotechnical properties, which extract from field experiments of 630 boreholes with depth taken to 30m and representing 200 sites. Soil investigation reports are composed from altered laboratory tests. The soil layers. Divided into each 2m, which means 15 studied’ layers and soil properties values were embraced and submitted. in tables and charts which have been analysis-using excel2013 and check the charts using curve expert program to get the relationships between the properties values and the factor of safety against liquefaction. The correlations between liquefaction potential represented by the …

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Arabic Speaker Identification System Using Multi Features, Rawia Mohammed, Nidaa Hassan, Akbas Ali Aug 2026

Arabic Speaker Identification System Using Multi Features, Rawia Mohammed, Nidaa Hassan, Akbas Ali

Engineering and Technology Journal

The performance regarding the Speaker Identification Systems (SIS) has enhanced because of the current developments in speech processing methods, however, an improvement is still required with regard to text-independent speaker identification in the Arabic language. In spite of tremendous progress in applied technology for SIS, it is limited to English and some other languages. This paper aims to design an efficient SIS (text-independent) for the Arabic language. The proposed system uses speech signal features for speaker identification purposes, and it includes two phases: The first phase is training, in this phase a corpus of reference database is built which will …

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Performance Improvement Of A Conventional Hydraulic Elevator By Using Electro-Hydraulic Servo Mechanism, Jamal Mohammed, Walaa Hashim, Bahaa Beram Aug 2026

Performance Improvement Of A Conventional Hydraulic Elevator By Using Electro-Hydraulic Servo Mechanism, Jamal Mohammed, Walaa Hashim, Bahaa Beram

Engineering and Technology Journal

An electro-hydraulic elevator is a new type of enhanced elevators that are used in low-rise buildings that do not exceed more than three floors. In this paper, an electro-hydraulic servo system for controlling the speed of a hydraulic elevator prototype by using a proportional valve and PID controller was investigated theoretically and experimentally. A three floors elevator prototype model with 76cm height was built including hydraulics components and electrical components. The elevator system is fully automated using the Arduino UNO board based Data Acquisition (DAQ) system. LabVIEW software is used to control the hydraulic elevator system through L298 DC drive …

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Utilization Of Mineral Sequestration For Co2 Capturing In Car Parks And Tunnels, Aymen Alsaad, Tareq Al-Attar, Basil Al-Shathr Aug 2026

Utilization Of Mineral Sequestration For Co2 Capturing In Car Parks And Tunnels, Aymen Alsaad, Tareq Al-Attar, Basil Al-Shathr

Engineering and Technology Journal

Decreasing the emissions of CO2 that come from vehicle exhaust, especially in car parking and tunnels, is so vital. CO2 emissions cause corrosion to a reinforcement of concrete. Thus, there is a need to provide a layer that protects the reinforcement from the reach of this harmful gas. This work goals to investigate the efficiency of using board units from Pozzolime concrete and pervious concrete to sequestrate CO2 from the environment and then to convert it into calcium carbonate inside the concrete. The units have dimensions of (200×400×40±5). All specimens were cured in a water tank after about 48 hours …

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Analysis And Comparison Of Dc-Dc Boost Converter And Interleaved Dc-Dc Boost Converter, Karrar Faraj, Jasim Hussain Aug 2026

Analysis And Comparison Of Dc-Dc Boost Converter And Interleaved Dc-Dc Boost Converter, Karrar Faraj, Jasim Hussain

Engineering and Technology Journal

The step-up converters are widespread use in many applications, including powered vehicles, photovoltaic systems, continuous power supplies, and fuel cell systems. The reliability, quality, maintainability, and reduction in size are the important requirements in the energy conversion process. Interleaving method is one of advisable solution for heavy-performance applications, its harmonious in circuit design by paralleling two or more identical converters. This paper investigates the comparison performance of a two-phase interleaved boost converter with the traditional boost converter. The investigation of validation performance was introduced through steady-state analysis and operation. The operation modes and mathematical analysis are presented. The interleaved boost …

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Improve The Surface Characteristics Of The Electric Discharge Machining Employing A Method Burnishing Process, Shukry Aghdeab, Ahmed Abdulameer, Ahmed Abdulwahhab, Majid Ismiel Ismiel Aug 2026

Improve The Surface Characteristics Of The Electric Discharge Machining Employing A Method Burnishing Process, Shukry Aghdeab, Ahmed Abdulameer, Ahmed Abdulwahhab, Majid Ismiel Ismiel

Engineering and Technology Journal

Electrical Discharge Machining (EDM) applies the concept of material eradication by utilizing electric spark erosion. The target of this exploration concentrates to examine the ideal procedure parameters of EDM on Aluminum 6061-T6as a workpiece with copper as a tool electrode. The effect of various process operators 'on machining rendering was examined. Internal factors with current (10, 20, 30) Ampere, pulse on time (50, 100, 150) μs was used after which takes pulse off time (25, 50, 75) μs. All parameters applied for empirical acts with influence on Ra (surface roughness ). The result showed that MRR" Material Removal Rate” is …

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Hydrogeological And Hydro Chemical Evaluation Of Groundwater In Karbala Region Using Geographic Information System (Gis), Marwa Hussein, Imzahim Alwan, Tariq Hussain Aug 2026

Hydrogeological And Hydro Chemical Evaluation Of Groundwater In Karbala Region Using Geographic Information System (Gis), Marwa Hussein, Imzahim Alwan, Tariq Hussain

Engineering and Technology Journal

The study area is located in the holy governorate of Karbala, Iraq; the research studied a predictive mathematical model of groundwater within Dibdiba Formation and by fifty (50) wells distributed randomly within the boundaries of the study area, all of them fall within the unconfined aquifer. Likewise, there is no component to direct the activity of these wells, where a mathematical model for the study area has been developed using the groundwater system modeling program (GMS v.10). The area was divided into a grid where the dimensions of a single cell ranged from 250m×250m. The model of the steady flow …

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Comparative Study Of Perturb & Observe, Modified Perturb & Observe And Modified Incremental Conductance Mppt Techniques For Pv Systems, Mohanad Mahmood, Inaam Ali, Oday Ahmed Aug 2026

Comparative Study Of Perturb & Observe, Modified Perturb & Observe And Modified Incremental Conductance Mppt Techniques For Pv Systems, Mohanad Mahmood, Inaam Ali, Oday Ahmed

Engineering and Technology Journal

This paper presents a modified maximum power point tracking algorithm (Modified MPPT) for PV systems based on incremental conductance (IC) algorithm. This method verified with the dynamic irradiance and sudden change of irradiance, the comparisons with conventional methods, for example, the perturbation and observation (P&O) and Modified perturbation and observation (Modified P&O) were performed. A photovoltaic (PV) panel was simulated and tested using MATLAB/Simulink based on PV panel at Power Electronics Laboratory. The results show that this method capable to find the maximum power point (MPP) under dynamic behavior faster than ( P&O) and Modified P&O). Reduced oscillation of MPP …

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Considerations On Spark- Gap Channel Radius And Electrical Conductivity, Bassam Habib Aug 2026

Considerations On Spark- Gap Channel Radius And Electrical Conductivity, Bassam Habib

Engineering and Technology Journal

A simple phenomenological model is established to determine the temporal evolution of spark gap channel radius and electrical conductivity during the resistive phase period. The present determination is based on the Braginskii’s equation for the channel radius which includes the electrical conductivity of the discharge channel as a constant quantity. In the present model, however, the electrical conductivity is regarded as a time varyingquantity. Basing on this, a mathematical formulation for the channel radius as a function of time was derived, and this has made possible the derivation of an explicit expression for the conductivity as a function of time …

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Study The Effect The Laser Intensity On The Behavior Of The Kinetic Energy, Drift Energy And The Total Energy Of The Silver Plasma, Esam Tawfiq Aug 2026

Study The Effect The Laser Intensity On The Behavior Of The Kinetic Energy, Drift Energy And The Total Energy Of The Silver Plasma, Esam Tawfiq

Engineering and Technology Journal

The particle-in-cell plasma simulation program in two dimensions was developed to display the properties of silver plasma under the effect of Ruby laser 694.3 nm with different intensities; 1012Wcm-2, 1015 Wcm-2, 1018 Wcm-2, and 1020 Wcm-2. The time evolution and the properties of total energy, kinetic energy, and drift energy of the system were examined in the region near the critical density (ne=0.2ncr). The charged particles respond to the laser pulse after a specified period of interaction time in the form of an increase in the energy of the system. This response depends on the intensity of the laser pulse …

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A Study Of Some Mechanical And Physical Properties For Palm Fiber/Polyester Composite, Samah Hussein Aug 2026

A Study Of Some Mechanical And Physical Properties For Palm Fiber/Polyester Composite, Samah Hussein

Engineering and Technology Journal

This research has been done by reinforcing the matrix (unsaturated polyester) resin with natural material (date palm fiber (DPF)). The fibers were exposure to alkali treatment before reinforcement. The samples have been prepared by using hand lay-up technique with fiber volume fraction of (10%, 20% and 30%). After preparation of the mechanical and physical properties have been studied such as, compression, flexural, impact strength, thermal conductivity, Dielectric constant and dielectric strength. The polyester composite reinforced with date palm fiber at volume fraction (10% and 20%) has good mechanical properties rather than pure unsaturated polyester material, while the composite reinforced with …

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Ethanol Gas Sensor Fabrication Based On Zno Flower Like Nanorods, Abdulqader Faisal, Mofeed Jaleel, Fahad Kamal Aug 2026

Ethanol Gas Sensor Fabrication Based On Zno Flower Like Nanorods, Abdulqader Faisal, Mofeed Jaleel, Fahad Kamal

Engineering and Technology Journal

Zinc oxide flower-like nanorods (ZnO NRs) was successfully synthesized via the hydrothermal method. The growth process was conducted with seed layer concentrations of 20mM. The as-synthesized nanostructures were characterized by x-ray diffraction (XRD), scanning electron microscope (SEM), atomic force microscope (AFM), and ultraviolet-visible (UV-VIS) spectrophotometer. The analysis results revealed a pure Wurtzite ZnO hexagonal nanostructures with preferred orientation (002) along the c-direction. The calculated band gap of average crystallite size is 3.2eV and 25 nm respectively. New designed, constructed and successfully calibrated for ethanol gas sensing was found. The ethanol gas sensor was fabricated at room temperature based on the …

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Discontinuous Control And Stability Analysis Of Step-Down Dc-Dc Voltage Converters, Bashar Midhat Aug 2026

Discontinuous Control And Stability Analysis Of Step-Down Dc-Dc Voltage Converters, Bashar Midhat

Engineering and Technology Journal

Step down DC-DC converters are power electronic circuits, which mainly used to convert voltage from a level to a lower level. In this paper, a discontinuous controller is proposed as a control method in order to control Step-Down DC-DC converters. A Lyapunov stability criterion is used to mathematically prove the ability of the proposed controller to give the desired voltage. Simulationsl1 are performedl1 in MATLABl1 software. The simulationl1 resultsl1 are presentedl1 for changesl1 in referencel1 voltagel1 and inputl1 voltagel1 as well as stepl1 loadl1 variations. The resultsl1 showl1 the goodl1 performancel1 of the proposedl1 discontinuousl1 controller.

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Analysis Of Thermal And Insulation Performance Of Double Glazed Window Doped With Paraffin Wax, Jalal Jalil, Salih Salih Aug 2026

Analysis Of Thermal And Insulation Performance Of Double Glazed Window Doped With Paraffin Wax, Jalal Jalil, Salih Salih

Engineering and Technology Journal

In this paper, a numerical investigation has been performed to study the effect of varying the thermal properties of the paraffin wax on the performance of a double glazed window doped with it during the summer climate of Baghdad (33.3 °N, 44.4 °E). Using FORTRAN (f 90) constructed computer program, finite difference combined with the enthalpy method was utilized to deal with the conduction with phase change problems within the wax. Results obtained show that increasing the density, latent heat, and thickness of the paraffin wax PCM) would increase the temperature-time lag and reduce the temperature decrement factor of the …

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Design And Implementation Of A Fuzzy Logic Controller For Inverted Pendulum System Based On Evolutionary Optimization Algorithms, Ahmed Ghaliba, Ahmed Oglah Aug 2026

Design And Implementation Of A Fuzzy Logic Controller For Inverted Pendulum System Based On Evolutionary Optimization Algorithms, Ahmed Ghaliba, Ahmed Oglah

Engineering and Technology Journal

The inverted pendulum is a standard classical problem in the branch ofcontrol and systems. If a cart is bushed by force then its position and angleof the pendulum will be changed. Several controllers may employed,keeping the pendulum arm upright by controlling at the cart location. Inthis search paper, the fuzzy-like PID (FPID) controller has been used tocontrol the inverted pendulum, and the parameters of the controller aretuned with several evolutionary optimization algorithms like a geneticalgorithm (GA), ant colony optimization (ACO), and social spideroptimization (SSO.) The result of tuned FPID with evolutionaryoptimization is compared with conventional PID, and it shows that …

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Air Temperature Modelling Depended On Remote Sensing Techniques, Zainab Mohammed, Riyad Al-Anbari, Oday Jasim Aug 2026

Air Temperature Modelling Depended On Remote Sensing Techniques, Zainab Mohammed, Riyad Al-Anbari, Oday Jasim

Engineering and Technology Journal

Air temperature (T air) near the land surface is a fundamental descriptor of physical environmental conditions and one of the most widely used climatic variables in global change studies. In this study, the researcher trying to suggest a model for estimating air temperature in summer season for any region through integrating of Iraqi Agrometeorological networkdaily (T air) with the moderate resolution imaging spectroradiometer (MODIS) land surface temperature (LST), Duration Day Length (DDL) and Digital Elevation Model (DEM). In this model, using satellite images for the study area and data of air temperature for four weather stations located in Babylon governorate …

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Effect Of Laser Shock Peening On Fatigue Stress Concentration Of Polyester Reinforced By Al-Micro Powder Composites, Ahmed N. Al- Khazraji, Ammar A. Mutasher Aug 2026

Effect Of Laser Shock Peening On Fatigue Stress Concentration Of Polyester Reinforced By Al-Micro Powder Composites, Ahmed N. Al- Khazraji, Ammar A. Mutasher

Engineering and Technology Journal

Laser shock peening is a widely common process for materials treatment and typically used for fatigue strength enhancement especially for metals. In this paper, its effect on polymeric composite materials studied experimentally. Unsaturated polyester was used as a matrix in order to composites preparation and Aluminum powder as fillers. A Hand lay-up technique has been used for composites making. Composites with three volume fractions of Aluminum powder were prepared (2.5%, 5%, and 7.5%). Fatigue specimens as a standard and with (1mm) semi-circular notch are prepared for testing. The fatigue test was performed at room temperature and stress ratio (R=-1). Laser …

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Investigation Of The Effect Of Nano Powder Mixed Dielectric On Edm Process, Rasha R. Elias Aug 2026

Investigation Of The Effect Of Nano Powder Mixed Dielectric On Edm Process, Rasha R. Elias

Engineering and Technology Journal

In this paper, Artificial Neural Network was adopted to predict the effect of current, the concentration of aluminum oxide (Al2O3) and graphite Nanopowders in dielectric fluid for the machining of Carbon steel 304 using Electrical Discharge Machining (EDM). The process variables were utilized to find their effect on Material Removal Rate (MRR), Surface Roughness (SR), and Tool Wear Rate (TWR). It was revealed from the experimental work that the addition of aluminum oxide and graphite Nanopowders into dielectric fluid maximizing MRR, minimized the SR and TWR at various variables. Minitab software was used in the design of experiments. Analysis of …

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Improved Wear Rate Resistance, Compression Strength And Hardness Of Polymethylmethacrylate Resin With Orange Peel Powder For Artificial Denture Base, Reem A. Mohammed Aug 2026

Improved Wear Rate Resistance, Compression Strength And Hardness Of Polymethylmethacrylate Resin With Orange Peel Powder For Artificial Denture Base, Reem A. Mohammed

Engineering and Technology Journal

The material utilized for manufacturing artificial dentures should have high-grade mechanical properties in order to resist heavy forces inside the mouth. This study includes investigation of some of the mechanical properties (wear rate resistance, compression strength, and hardness) of the specimens prepared by (hand lay-up) method. The wear behavior experiments were performed on (a pin-on-disk tester) under various factors 5%, 8%, 11%, 14%, 17% weight fraction of orange peel, (10, 15, 20 N) load applied and (5, 10, 15 minutes) sliding time, and analysis these experimentally by using the Taguchi’s experimental design (L9) (MINITAB 16). Tests explicated that the specimens …

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A Modification On Key Stream Generator For Rc4 Algorithm, Suhad Kareem, Abdul Monem Rahma Aug 2026

A Modification On Key Stream Generator For Rc4 Algorithm, Suhad Kareem, Abdul Monem Rahma

Engineering and Technology Journal

Rivest Cipher 4 (RC4) is one of most common stream cipher, but it experience many problem, such as, there is little combination between the plaintext and cipher-text. For this reason RC4 Cipher is vulnerable to a number of attacks. Thereupon, this paper proposes a new modification of the RC4 to strong it. This achieved by modifying key-stream generator based on linear equation with four state tables for generating random numbers. Key control is used for selecting one state table to apply # operation, then performing forward and backward effects to generate the key-stream that used in encryption and decryption. Being …

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