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Investigation Of Microstructure And Chemical Analysis Along Weldments Aisi 410 Mss/Er Nicrmo-3, Emad Al-Hassani Aug 2026

Investigation Of Microstructure And Chemical Analysis Along Weldments Aisi 410 Mss/Er Nicrmo-3, Emad Al-Hassani

Engineering and Technology Journal

In this research work the weldability of AISI 410 martensitic stainless steels (SS) LP-blades of steam turbine joined by GTAW (gas tungsten arc welding); inconel-3 filler wire was investigated. To study the mechanical performance and microstructural characteristics of the welded joint, the optical-microscopic and micro-hardness were applied along the cross-section of specimens, respectively. Line/Point and EDS technique were used to predict the chemical composition of welding joint. WDS MAP/ WDS LINK (Energy Dispersive Spectroscopy) used to know the movement of elements along the weldments. Results showed that micro-hardness along the HAZ regions increased. Microstructure photographs revealed γ-austenite as predominate phase …

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Beneficiation Of Low Grade Calcium Bentonite Claystone, Hijran Toama, Abdul-Wahab Al-Ajeel, Ekhlas Abdullah Aug 2026

Beneficiation Of Low Grade Calcium Bentonite Claystone, Hijran Toama, Abdul-Wahab Al-Ajeel, Ekhlas Abdullah

Engineering and Technology Journal

The beneficiation of Ca-bentonite claystone has been studied with dispersion sedimentation technique using polyionic salts as dispersant.The claystone is located in the Western Desert of Iraq. It is of a low grade, associated with different amount of clay and non-clay mineral impurities. Calcite (CaCO3) constitutes the major proportion of these impurities. Various parameters; solid concentration, dispersant amount (e.g. sodium tripolyphosphate, and tetrasodium pyrophosphate), conditioning time, and centrifugal sedimentation speed and time on the efficiency of the beneficiation process were investigated and followed through the measurement of CaO% and cation exchange capacity (CEC) values of the upgraded claystone concentrate. Centrifugal sedimentation …

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Stability Analysis Of An Earth Dam Using Geo-Slope Model Under Different Soil Conditions, Usama Mishal, Thair Khayyun Aug 2026

Stability Analysis Of An Earth Dam Using Geo-Slope Model Under Different Soil Conditions, Usama Mishal, Thair Khayyun

Engineering and Technology Journal

Numerical models are used to check the stability of earth dams and to simulate the effects of all the parameters, which affect its safety. The physical properties of the materials used in the construction of an earth dam are one of these important parameters. The finite element analysis software used for numerical modeling in this study is GeoStudio 2007(SEEP/W and SLOPE/W). The total number of finite elements used to simulate the standard model is 13508 (triangular elements with global size = 2m), while the total number of nodes is 6939. The selected case study is Al-Adhaim dam, which is an …

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Applying Fuzzy Multi-Criteria Decisionmaking And Different Techniques To Solve Multi Objective Project Planning, Mahmoud Mahmoud, Luma Al-Kindi, Haider Hady Aug 2026

Applying Fuzzy Multi-Criteria Decisionmaking And Different Techniques To Solve Multi Objective Project Planning, Mahmoud Mahmoud, Luma Al-Kindi, Haider Hady

Engineering and Technology Journal

For achieving successful projects, effective planning and scheduling should be taken into consideration besides reaching an accepted balance among project objectives. As a result, this research focuses on attaining an effective balancing among a set of objectives that are time, cost, and number of laborers. The purpose of this research is to solve the problem of multi-objective project using multi-technique in a best possible way that accommodate with the nature of project activities. This aim is achieved by facilitating the accuracy of decision taking throughout choosing the best technique among group of techniques used in project planning and control these …

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Investigate The Effect Of Different Kinds Of Discontinuous Fibers On The Mechanical Properties Of Epoxy Matrix Composite Materials, Ahmed Muhammad, Ibrahim Atiyah, Hamza Kamal, Ahmed Al-Mukhtar Al-Mukhtar Aug 2026

Investigate The Effect Of Different Kinds Of Discontinuous Fibers On The Mechanical Properties Of Epoxy Matrix Composite Materials, Ahmed Muhammad, Ibrahim Atiyah, Hamza Kamal, Ahmed Al-Mukhtar Al-Mukhtar

Engineering and Technology Journal

The composite manufacturing has been a wide variety of applications. The low density, stiffness, and weight to strength ratio giving these materials significant mechanical properties in aerospace, and automotive industries. In this work, the specimens of fiber reinforced composites have been prepared by adding different percentage of two types of fibers in epoxy resins matrix. So, the aim of this study is to evaluate the effect of additives on the mechanical properties according to Standard Test Method for Tensile Properties ASTM D3039. The tensile and hardness testing show that the carbon fibers improve the hardness and tensile strength due to …

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Dcf With Fbg For Dispersion Compensation In Optical Fiber Link At Various Bit Rates Using Duobinary Modulation Format, Hussein Mahmood Aug 2026

Dcf With Fbg For Dispersion Compensation In Optical Fiber Link At Various Bit Rates Using Duobinary Modulation Format, Hussein Mahmood

Engineering and Technology Journal

Dispersion is one of the very important parameters that effect on the performance of optical fiber communication systems. It causes pulse broadening, limiting of transmission distance and the number of channels on optical fiber link and low Bit rate. Dispersion compensation fiber (DCF) based on Fiber Bragg Grating (FBG) is widespread used in the dispersion compensation scheme. In this work, the proposed dispersion compensation fiber is included (pre – post–symmetrical) schemes with Fiber Bragg Grating and duo-binary modulation format. These are at various bit rates (10 Gbit/s, 20 Gbit/s, 30 Gbit/s and 40 Gbit/s) and different input laser power from …

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Specific Absorption Rate (Sar) Simulated For Square Patch Antenna Of Head Tissues, Ahmed Ahmed Aug 2026

Specific Absorption Rate (Sar) Simulated For Square Patch Antenna Of Head Tissues, Ahmed Ahmed

Engineering and Technology Journal

Square patch antennas (SPA) are widely used today is in wireless communication systems, mainly with a popular frequency of 2.4 GHz. Wireless devices is the main source of electromagnetic (EM) radiation, which penetrates the tissues of human and causes health danger. In this paper, SPA antenna is designed, simulated and evaluated at 2.4 ������ for internet application by using CST Microwave studio 2014. Specific absorption rate (SAR) is the term, which measures the exposure of human to EM radiation of communication antenna. SAR values are calculated over 1 ���� ������ 10 ���� mass of tissues, according to the IEEE and …

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Studying The Efficiency Of Lime-Soda Sinter Process To Extract Alumina From Colored Kaolinite Ores Using Factorial Technique Of Design Of Experiments, Hijran Toama, Abdul-Wahab Al-Ajeel, Ajheen Jumaah Aug 2026

Studying The Efficiency Of Lime-Soda Sinter Process To Extract Alumina From Colored Kaolinite Ores Using Factorial Technique Of Design Of Experiments, Hijran Toama, Abdul-Wahab Al-Ajeel, Ajheen Jumaah

Engineering and Technology Journal

As the increasing demand for alumina in recent years with the result diminishing reserve of bauxite, the need to secure a domestic raw material base is driving research in new technologies to process low grade ores into alumina, with the intention that these technologies will lead to a significant reduction of bauxite and alumina transportation costs, allow the extraction of more valuable components from the ore and reduce environmental impact. Clays are types of the low-grade aluminum ores, they're also well abundant which make them a potential substitutes for Bauxite. In this work, lime soda sinter process was adopted for …

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Experimental Study Of Mechanical Properties Of Type Linear Low Density Polyethylene And Mold Design, Samir Amin, Ali Hassan Aug 2026

Experimental Study Of Mechanical Properties Of Type Linear Low Density Polyethylene And Mold Design, Samir Amin, Ali Hassan

Engineering and Technology Journal

In general, the manufacture of plastic materials is commonly in the world due to their applications. Plastic is light weight, cheap, and able to be used in different industries, for example parts of automotive and home tools. This research represents a challenge on how to design and manufacture a changeable mold. First, a mold was designed by the Auto CAD program and then manufactured in the workshop. The mold consists of three parts, the middle part has changeable cavity. The mold was cooled by worm net pipes embedded into the third part. All specimens were manufacture in this mold. The …

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Select The Best Cyclic Prefix For Various Effective Area In An O-Ofdm System, Sinan Majid, Razi Al Azawi, Rend Alrays Aug 2026

Select The Best Cyclic Prefix For Various Effective Area In An O-Ofdm System, Sinan Majid, Razi Al Azawi, Rend Alrays

Engineering and Technology Journal

In the past few years, the Optical Orthogonal Frequency Division Multiplexing (O-OFDM) has been deliberated as a promising future in high data transmission technology. OFDM is a special case of FDM technology, which is a multi-carrier-modulation (MCM). OFDM has been developed in the wireless as well as wireline systems, for that reason it is popularly used in optical transmission systems. O-OFDM system is simulated with Optisystem V14.0 program from @Optiwave company. This paper provides an examination of O-OFDM system using different cyclic prefix length to eliminate the effect of ICI and ISI, on the other hand using different values of …

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On The Performance Of A Microstrip Antenna Based Uc-Pbg Structures For Uhf Rfid Readers, Ali Jalal, Marwa Jwair Aug 2026

On The Performance Of A Microstrip Antenna Based Uc-Pbg Structures For Uhf Rfid Readers, Ali Jalal, Marwa Jwair

Engineering and Technology Journal

Microstrip antennas suffer from low gain bandwidth product due to surface wave effects and aperture diffractions that limit their use for long-range communications. On top of that, the difficulty of achieving a pure circularly polarized radiation with high gain due to the feeding structure effects. This paper is subjected to design a gain enhanced circularly polarized patch antenna using Uniplanar Compact-Photonic Band Gap (UC-PBG) structu.res for UHF RFID applications. The patch is structured as truncated corners with cross slots at the centre mounted on an FR-4 epoxy substrate of 1.6mm thickness with an overall area of 188×188mm2. The UC-PBG is …

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Study Of Some Mechanical Properties And Erosive Behavior By Taguchi Method For Hybrid Nano Composites, Reem Mohammed Aug 2026

Study Of Some Mechanical Properties And Erosive Behavior By Taguchi Method For Hybrid Nano Composites, Reem Mohammed

Engineering and Technology Journal

The aim of this research is study the effect Nano TiO2 powder on impact strength, fracture toughness, hardness shore (D) and erosive wear behavior of polymer composites materials are prepared by simple hand lay-up technique. The specimens was prepared by adding (1%, 2%,3%,4%,5% & 6%) weight fraction of nano powder (TiO3) has average size of (16 nm) to unsaturated polyester resin reinforcement with (5%) weight fraction of carbon fiber. The value of erosive wear rate for polymer composite materials can be obtaining after (15 hours) and under effect various parameters such as impingement angle (30 º, 45 º, 60 º, …

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Performance Evaluation Of The V–Basin Tube Solar Collector By Using .Different Nanoparticles And Base Fluids, Ibtisam Hasan, Khaliid Sultan Aug 2026

Performance Evaluation Of The V–Basin Tube Solar Collector By Using .Different Nanoparticles And Base Fluids, Ibtisam Hasan, Khaliid Sultan

Engineering and Technology Journal

This research discuss the performance and evaluation of V –basin collector in heating systems of solar with different nanofluids and base fluids, where metal nanofluids [Ag (20nm) + DW + EG], and metal oxide nanofluid [TiO2 (40nm) + DW + EG]are the used operating fluids with flow rate of 25 lit/hr, 50 lit/hr and ratios of concentration (i.e. 1, 2, 3 and 5 % vol). The base fluids employed in these experiment is distilled water and ethylene glycol. The metal and oxide metal nanofluids are shown a significant improvement in the performance of V –basin tube solar collector with higher …

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A Mathematical Model To Determination Of Alum Amount Added For The Purpose Of Coagulation In Water Purification Plants, Hassan Omran, Mizher Kadhim Aug 2026

A Mathematical Model To Determination Of Alum Amount Added For The Purpose Of Coagulation In Water Purification Plants, Hassan Omran, Mizher Kadhim

Engineering and Technology Journal

Chemicals are used to increase the settling velocity for suspended deposition colloids which are not settled in sedimentation tanks in water purification plants . For this purpose, the alum is used in wide spread across the water purification projects in Iraq. This research contains studying the factors that effect on alum amount added by conducting laboratory tests of water samples from Euphrates river at the purification plant in AL-Musayyab city over ten years (with monthly rate). It was noted that the amount added depends heavily on the turbidity of water entering the purification plant, in addition to water temperature and …

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Strength Evaluation Of Hybrid Reinforced Concrete Columns Under Eccentric Loads, Ammar Ali, Zaynab Mohammed Aug 2026

Strength Evaluation Of Hybrid Reinforced Concrete Columns Under Eccentric Loads, Ammar Ali, Zaynab Mohammed

Engineering and Technology Journal

This study presents an experimental investigation of the behavior of hybrid circular columns composed of outer precast reactive powder concrete (RPC) tubes filled with normal concrete (NC). The column specimens were subjected to an eccentric load producing both flexural and axial stresses within the section. The specimens consisting of 200 mm outer diameter with 400 mm height. The column specimens were divided into three groups, each group contains two specimens of thicknesses of outer RPC walls of 50 and 25 mm that filled with NC, in addition to RPC solid column section. The columns of first group were without any …

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Effect Of Dem And Land Cover Resolutions On Simulated Runoff Of Adhaim Watershed By Swat Model, Mahmoud Saleh Al-Khafaji, Fouad Saeed Aug 2026

Effect Of Dem And Land Cover Resolutions On Simulated Runoff Of Adhaim Watershed By Swat Model, Mahmoud Saleh Al-Khafaji, Fouad Saeed

Engineering and Technology Journal

Accurate estimation of surface runoff by using Soil and Water Assessment Tool (SWAT) model is highly depends on the accuracy of the Digital Elevation Model (DEM), Land Cove and Land Use (LC/LU), soil and weather data as input variables. The interactive and complementary effects of the DEM and LC/LU resolutions on the estimated runoff were not taken into consideration in previous studies. This research aims to study these effects on the accuracy of runoff estimation of Adhaim Watershed by using SWAT Model. Twenty surface runoff estimation SWAT models of Adhaim Watershed were implemented using five DEMs with spatial resolution of …

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Numerical And Experimental Study Of Cooling In Desktop Computer With Block Heat Sink, Jalal Jalil, Ekbal Ali, Hiba Kurdi Aug 2026

Numerical And Experimental Study Of Cooling In Desktop Computer With Block Heat Sink, Jalal Jalil, Ekbal Ali, Hiba Kurdi

Engineering and Technology Journal

This paper investigates numerically and experimentally fluid flow and heat transfer inside the desktop P.C.. The study of cooling considers the components; CPU, heat sink, power supply, motherboard, CD, HDD and fans. Three components have heat source (CPU, motherboard and power supply unit). There were two openings for air inlet and two for air outlet. The tested values of air inlet velocities were 1.2, 1.8 and 2.4 m/s. The work investigates the effect of inlet air velocity and powers (PCPU = 8.5 W, PPSU = 24 W, PMO=12 W) of multi-components (CPU, motherboard and PSU). The numerical results obtained (by …

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Removal Of Cr (Vi) And Cu (Ii) Ions From Synthetic Wastewater By Solar Photocatalytic Reactor, Mohammad Abid, Luma Mahmood, Noor Hamza, Sukaine Mohamed Mohamed Aug 2026

Removal Of Cr (Vi) And Cu (Ii) Ions From Synthetic Wastewater By Solar Photocatalytic Reactor, Mohammad Abid, Luma Mahmood, Noor Hamza, Sukaine Mohamed Mohamed

Engineering and Technology Journal

Heavy metal ions in wastewater have promoted increasing concern on environmental and health risks. The present work was devoted to investigate the feasibility of utilizing solar light to degrade Cr (VI) and Cu (II) ions in synthetic wastewater. The effect of the key process parameters on the quality of product was studied by varying the pH (3, 5, 7, 9, and 11), H2O2 (50, 100, 200, and 300 mg/L) and TiO2 loading (0.9, 1.3, and 1.7 g/L). Experimental results revealed that after 120 min of solar illumination the highest reduction of Cr (VI) ions was 97.0% obtained under (pH = …

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Design Of Compact Dual-Mode Bpfs Based On Cantor Fractal Geometry With U-Shaped Capacitive Coupling, Seevan Abdulkareem Aug 2026

Design Of Compact Dual-Mode Bpfs Based On Cantor Fractal Geometry With U-Shaped Capacitive Coupling, Seevan Abdulkareem

Engineering and Technology Journal

This study displays two microstrip bandpass filters using dual mode loop and patch resonators in form of Cantor geometry. The proposed filters exhibits one and two bands frequency responses for each of them respectively. The microstrip filter using Cantor loop has been tested by AWR 12 software package at resonances of 4.55 and 4.58 GHz, whereas for Cantor dual band patch filter has been simulated at band frequencies of 3.6 and 6.84 GHz respectively. RT/ Duroid 6010 substrate has been adopted for filter designs with thickness and relative permittivity of 1.27 mm and 10.8, respectively. The simulated filters have notable …

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Effect Of Nano Carbon Tube On The Mechanical And Physical Properties Of Composites Based On Resin Route, Aseel Abdul-Hussein, Emad Al-Hassani, Marwa Atallah Aug 2026

Effect Of Nano Carbon Tube On The Mechanical And Physical Properties Of Composites Based On Resin Route, Aseel Abdul-Hussein, Emad Al-Hassani, Marwa Atallah

Engineering and Technology Journal

In this work, the physical and mechanical properties of nano composites are investigate. The nano composites consist of matrix was polyester resin and 3% volume fractions of glass fibers as reinforcement with (0.5%, 1%, 1.5%, 2 %( volume fractions of carbon nanotube as filler. Samples of nano composite materials in this research have been prepared by hand – layup. The results showed that the sample (UP+3% GF) has higher water absorption than sample net polyester. As can be noted from the results that the sample (UP+3% GF+2% CNTs) has higher value water absorption than other samples. Also can be observed …

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Using Polyethylene Glycol To Produce Self Cured Cement Mortar, Rasha Rawdhan, Awham Hameed, Shakir Salih Aug 2026

Using Polyethylene Glycol To Produce Self Cured Cement Mortar, Rasha Rawdhan, Awham Hameed, Shakir Salih

Engineering and Technology Journal

The capacity of self-curing admixture is to reduce the evaporation of water from mortar, and subsequently they increase the ability of water retention from mortar contrasted with those traditionally cured mortar. Polymeric phase is disperse in cement causing diminish in water absorption and Likewise its connection with hydrating cement create further bond formation which lead to the increment in strength. In this study two group of mortar samples were prepared, first group consist reference and fly ash mortar, second group prepare with admixtures of polymer were PEG 400 used as self-curing agent in this study. Flow test and setting time …

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Earth Fault Protection Failure In The Distribution Transformer 11/0.4 Kv Supply, Thamir Abdul-Wahhab, Mohammed Jasim Aug 2026

Earth Fault Protection Failure In The Distribution Transformer 11/0.4 Kv Supply, Thamir Abdul-Wahhab, Mohammed Jasim

Engineering and Technology Journal

This research studies a miss-coordination problem in the protection of 11 kV distribution network in Iraq. The problem arises when an underground cable is exposed to an earth fault at a location between the High Rupturing Capacity (HRC) fuses and the high voltage windings of the distribution transformer. In this case, the protective relay of the main circuit breaker of the feeder operates at a time faster than the HRC fuses of the faulty transformer. The distribution network considered in this work is an underground 11kV distribution network at Al-Rusafa General Directorate geographical region in Baghdad city. The problem was …

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Design And Implementation Of A Two Stage Controller For Ball And Beam System Using Fpga, Ivan Hashim, Ekhlas Karam, Noor Abdul-Jaleel Aug 2026

Design And Implementation Of A Two Stage Controller For Ball And Beam System Using Fpga, Ivan Hashim, Ekhlas Karam, Noor Abdul-Jaleel

Engineering and Technology Journal

The ball and beam is, in fact, a standout amongst the essentially vital models, which are generally utilized for educating the control system because its simplicity to be built, modeled, and controlled. This system involve a ball roll on a beam and since the angle of the beam manipulate by servo motor, so the purposes of this paper is to design two stages controller to stabilize the ball position along the beam by varying the angle of beam. The First controller stage “is Proportional- Integral- Derivative” (PID) “for servo motor. The second stage of the controller is Proportional-Derivative (PD) to …

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Comparison Of The Behavior For Free Standing Pile Group And Piles Of Piled Raft, Awf Al-Kaisi, Falah Rahil, Mohanned Waheed Aug 2026

Comparison Of The Behavior For Free Standing Pile Group And Piles Of Piled Raft, Awf Al-Kaisi, Falah Rahil, Mohanned Waheed

Engineering and Technology Journal

The intended task of this paper is studying the behavior of free standing pile groups and piles of piled raft driven in clayey soil under axial loading. The raft-piles interaction is investigated as well through the two series of tests. Each one of these series includes twelve tests, the two series are conducted with the same configuration, spacing, size of piles and undrained shear strength of soil except that in the free standing group there is a gap of about (20-25 mm) between the raft and the soil surface to have the applied load transferred to the piles only in …

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Studying Of Heat Treatment Influence On Mechanical Behavior Of Aa6061-T6 By Desirability Function Analysis Approach, Hashim Neamah Aug 2026

Studying Of Heat Treatment Influence On Mechanical Behavior Of Aa6061-T6 By Desirability Function Analysis Approach, Hashim Neamah

Engineering and Technology Journal

This paper presents optimization of warmth treatment parameters for the mechanical conduct on 6061 Aluminum alloy using desirability function analysis (DFA). Stability The experiments have been carried out using Taguchi’s L9 toughness orthogonal array. The warmth treatment durability parameters certain quenching average, getting older dead heat stability or growing older heat are optimized through multi-response considerations particularly hardness yet put on obstruction .The gold standard parameters bear been determined by the decomplex desirability value near beyond desirability characteristic analysis, yet longevity enormous contribution of parameters be able keep determined by using evaluation on dissonance (ANOVA). The evaluation effects suggests so …

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Flexural Behavior Of Rc Beams Strengthened By Nsm-Cfrp Laminates Or Bars, Ikram Saeed, Riadh Al-Mahaidi, Tareq Al-Attar, Basil Al-Shathr Al-Shathr Aug 2026

Flexural Behavior Of Rc Beams Strengthened By Nsm-Cfrp Laminates Or Bars, Ikram Saeed, Riadh Al-Mahaidi, Tareq Al-Attar, Basil Al-Shathr Al-Shathr

Engineering and Technology Journal

The strengthening and enhancing the structures represents an important aspect in the construction industry due to the growing need to increase the tolerability of origin to a specific level and within the required rehabilitation and maintenance work. This paper assessed the performance and effectiveness of the Near Surface Mounted (NSM) strengthening technique for the reinforced concrete beams. Three (140x260x2700 mm) reinforced concrete beams were strengthened in flexure with NSM strengthening systems using Carbon Fiber Reinforced Polymer (CFRP) strips, bars, and cement-based adhesive as a binding materials. The flexural behaviour of the beams was evaluated by testing the specimens under three-point …

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H-Infinity Based Full State Feedback Controller Design For Human Swing Leg, Hazem Ali, Azhar Abdulridha Aug 2026

H-Infinity Based Full State Feedback Controller Design For Human Swing Leg, Hazem Ali, Azhar Abdulridha

Engineering and Technology Journal

In this paper, the robustness properties of H-infinity control to produce a dynamic output feedback controller is applied to a human swing leg system. The double pendulum structure is usually used to model this system. The pendulum links will represent the thigh and shank of a human leg. The upper body will be connected to the thigh and then the shank via hip and knee joints. The muscles of thigh and shank are moved by applied two external (servomotor) torques at the hip and knee joints. The mathematical model of the system is developed. The results show that the proposed …

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Effect Of Laser Surface Melting On Chromium Carbide Of 304 Stainless Steels, Sami Jafar, Mohammad Kadhim, Sameer Faayadh Aug 2026

Effect Of Laser Surface Melting On Chromium Carbide Of 304 Stainless Steels, Sami Jafar, Mohammad Kadhim, Sameer Faayadh

Engineering and Technology Journal

In the present study, the effects of laser surface melting (LSM) on chromium carbide of heat treated (AISI 304) austenitic stainless steels (ASS) was studied with the aim to suppress sensitization of 304SS. Austenitic stainless steels were heated (aging) up to (800) ºC at constant holding time for two hours. LSM was conducted by using a (600 W) Yb-YAG laser. The microstructure was characterized by using optical microscopy (OM), scanning electron microscopy (SEM) and X-ray diffraction (XRD). Results shows, refined and homogeneous microstructure which contains austenite (γ) as basically phase and delta ferrite (δ) as the secondary phase, however, chromium …

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Optimal Reconfiguration And Distributed Generation Placement In Baghdad Distribution Sector, Inaam Ibrahim Ali, Omar Saeed Aug 2026

Optimal Reconfiguration And Distributed Generation Placement In Baghdad Distribution Sector, Inaam Ibrahim Ali, Omar Saeed

Engineering and Technology Journal

The power losses in distribution system are high, which form 70 – 80% of total transmission and distribution losses. High losses have severe impact on stability, reliability as well as economy. Therefore, minimization of these losses is very necessary. In this paper proposed various schemes to reduce the active power losses in distribution network, given as:- Optimum reconfiguration network,- Optimum Distributed Generation (DG) placement and- Optimum reconfiguration with optimum (DG) placement.Using Cymdist software to implement the optimal reconfiguration algorithm and proposed Genetic Algorithm (GA) to find the size and location, which programmed under MATLAB software package. Whereon the proposed methodology …

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Mechanical Properties Of Al 6061/Al2o3 Nanocomposite By Stir Casting, Hussain Al-Alkawi, Huda Al-Salihi Aug 2026

Mechanical Properties Of Al 6061/Al2o3 Nanocomposite By Stir Casting, Hussain Al-Alkawi, Huda Al-Salihi

Engineering and Technology Journal

Present work deals with the examination of the mechanical properties of Al 6061 composites, which were successfully fabricated by stir casting technique and then reinforced by using different percentages of Al2O3 nanoparticles up to 10 wt%. The required samples were carefully prepared. Evaluation of the mechanical properties such as hardness, yield tensile stress and ultimate tensile stress were effectively obtained at various percentages of Al2O3 nanoparticles .It was found that the mechanical properties of 6061 /Al2O3 nanoparticles are critically influenced by the concentrations of the reinforced Al2O3 nanoparticle, since there was a substantial enhancement in the mechanical properties, as the …

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