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2026

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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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Removal Of Iron From Produced Water Using Silica Adsorbent Material, Zamen Mekhelf, Akeel Subhi, Ramzy Hamied Aug 2026

Removal Of Iron From Produced Water Using Silica Adsorbent Material, Zamen Mekhelf, Akeel Subhi, Ramzy Hamied

Engineering and Technology Journal

The removal of Iron from produced water using adsorbent materials is taking a space of attention from the perspective of researchers. In this work, the characterization of chemically modified silica used as Iron ions adsorbent using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), laser granularity instrument was performed. The point of zero charge (PZC) of modified silica was determined using titration method. Different parameters were used to better approach Iron removal. These parameters are 0.2 and 0.4 mg/l modified silica adsorbent dose, 30-180 min adsorption time and pH values of 4-10. The results showed that modified silica exhibited …

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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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Improve The Micro-Hardness Of Single Point Incremental Forming Product Using Magnetic Abrasive Finishing, Baqer Ahmed, Saad Shather, Wisam Hamdan Aug 2026

Improve The Micro-Hardness Of Single Point Incremental Forming Product Using Magnetic Abrasive Finishing, Baqer Ahmed, Saad Shather, Wisam Hamdan

Engineering and Technology Journal

In this paper the Magnetic Abrasive Finishing (MAF) was utilized after Single Point Incremental Forming (SPIF) process as a combined finishing process. Firstly, the Single Point Incremental forming was form the truncated cone made from low carbon steel (1008-AISI) based on Z-level tool path then the magnetic abrasive finishing process was applied on the surface of the formed product. Box-Behnken design of experiment in Minitab 17 software was used in this study. The influences of different parameters (feed rate, machining step size, coil current and spindle speed) on change in Micro-Vickers hardness were studied. The maximum and minimum change in …

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Preparation And Study Of Flexural Strength And Impact Strength For Hybrid Composite Materials Used In Structural Applications, Teeb Mohameed, Sihama Salih, Wafaa Salih Aug 2026

Preparation And Study Of Flexural Strength And Impact Strength For Hybrid Composite Materials Used In Structural Applications, Teeb Mohameed, Sihama Salih, Wafaa Salih

Engineering and Technology Journal

Many of the polymeric materials used for structural purposes have weak mechanical properties, these characteristics can therefore be improved by preparing a hybrid laminar composite. In this work use melting mixing method using screw extruder to prepare sheets of polymer blends and nanocomposites based on polymer blends, and using a hot hydraulic press machine to prepared hybrid laminates composites. Two groups of hybrid laminar composites were prepared, the first group is consist of [((94%PP: 5%PMMA: 1 %( PP-g-MA)): 0.3% ZrO2): 6%KF and 8%KF] and the second group is [((94%PP: 5%UHMWPE: 1 %( PP-g-MA)): 0.3% ZrO2): 6%KF and 8%KF]. The results …

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Influence Of Nanocermic On Some Properties Of Polyetheretherketone Based Biocomposites, Alaa Mohammed, Jawad Oleiwi, Emad Al-Hassani Aug 2026

Influence Of Nanocermic On Some Properties Of Polyetheretherketone Based Biocomposites, Alaa Mohammed, Jawad Oleiwi, Emad Al-Hassani

Engineering and Technology Journal

Polyetheretherketone (PEEK) materials belong to a group of high-performance thermoplastic polymers thermoplastic that has been proposed as a substitute for metals in biomaterials. In this research, in order to improve the performances of PEEK, nano titanium dioxide (n-TiO2) and nano-hydroxyapatite (n-HAp) were incorporated into PEEK loading up to (1.5 wt%) to fabricate PEEK composites by using a method of melt-blending and hot compressing. Properties, such as compression, density, the morphology of fracture, and element analysis were examined for preparing samples. The results showed that the compression and density properties improved with increased weight fraction for two types of reinforcement, but …

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Evaluation Of Mechanical Properties And Finite Element Modeling In Friction Stir Welding Of C12200 Copper Alloy To C36000 High-Leaded Brass Pipe, Ahmed Akber, Ali Khleif, Abbas Hasein Aug 2026

Evaluation Of Mechanical Properties And Finite Element Modeling In Friction Stir Welding Of C12200 Copper Alloy To C36000 High-Leaded Brass Pipe, Ahmed Akber, Ali Khleif, Abbas Hasein

Engineering and Technology Journal

In systems transporting fluids like petrol, water, or any fluids. Copper and brass pipes are used because of the capability to resist corrosion. The copper alloys can be welded by several methods like arc, resistance, friction welding, and gas methods and they can be readily soldered and brazed. In the present study, mechanical properties and finite element modeling evaluation for friction stir welding of two dissimilar pipes (C12200 copper alloy pipe with C36000 copper alloy pipe). During this study six parameters were used where rotation speed of (775,1000,1300 and1525rpm), welding speed of 1.7 mm/min, axial force of 8.5KN, with a …

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Mechanical Properties Of Martensitic Stainless Steel (Aisi420) Subjected To Conventional And Cryogenic Treatments, Hareer Mohamed, Ali Ataiwi, Jamal Dawood Aug 2026

Mechanical Properties Of Martensitic Stainless Steel (Aisi420) Subjected To Conventional And Cryogenic Treatments, Hareer Mohamed, Ali Ataiwi, Jamal Dawood

Engineering and Technology Journal

Martensitic Stainless Steel (AISI420) MSS are vastly used because of their properties conventional which mix good mechanical and corrosion resistance. Cryogenic up to -196°C for different soaking time and heat treatments at (1000,500,200°C) for 15 minutes is one of the ways that used to enhance mechanical properties of these steels by means transformation of retained austenite, deformation regarding martensite then carbide refinement. the result showed an increase in tensile strength of samples that were treated cryogenically and tempered at 500°C was 933 (MPa) compared to samples that just treated conventionally in austenitizing and tempering at the same temperature that was …

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Hollow Fiber Ultrafiltration Membrane For Methyl Green Dye Removal, Saja Alardhi, Jamal Alrubaye, Talib Albayati Aug 2026

Hollow Fiber Ultrafiltration Membrane For Methyl Green Dye Removal, Saja Alardhi, Jamal Alrubaye, Talib Albayati

Engineering and Technology Journal

In this study, the behavior of a Polyvinyl chloride (18 wt % PVC) hollow fiber ultrafiltration (UF) membrane for methyl green (MG) dye removal from aqueous solution was estimated by studying the influence of varying the operation conditions (the concentration of the dye and volumetric flow rate) to determine their impact on the separation processes (permeate flux and rejection coefficient) at constant pressure and temperature. The PVC membrane was characterized by scanning electron microscopy. Furthermore, tests of the UF were carried out with pure water and MG aqueous solutions as feed. Outcomes explained a notable influence of feed concentration and …

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Synthesis And Characteristics Of Acetylated Corn Cob Powder/ Unsaturated Polyester Composite, Assala Oribe, Kadhum Shabbeb, Ayad Hassan Aug 2026

Synthesis And Characteristics Of Acetylated Corn Cob Powder/ Unsaturated Polyester Composite, Assala Oribe, Kadhum Shabbeb, Ayad Hassan

Engineering and Technology Journal

In this research, the composite material was prepared from untreated and treated corn cob powder by acetylation process and the physical and mechanical properties have been studied. Cellulose is extracted using the Kürchner-Hoffer method and then acetylated. Untreated corn cob powder and Acetylated corn cob powder were mixed with unsaturated polyester resin in different concentrations (0, 1, 2, and 3 wt. %). The Mechanical and the physical test results showed that there is an enhanced in mechanical properties (Tensile, Impact, Hardness, and Bending) with the treatment (Acetylation) by increasing treated corn cob powder mass fraction (1, 2, and 3wt. %) …

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Investigation Of Cost-Influencing Factors Potentially Controllable By Main Contractors In Construction Projects In Iraq, Layth Ali, Raid Abid Ali, Zeyad Khaled Aug 2026

Investigation Of Cost-Influencing Factors Potentially Controllable By Main Contractors In Construction Projects In Iraq, Layth Ali, Raid Abid Ali, Zeyad Khaled

Engineering and Technology Journal

Cost overrun in construction projects is a common phenomenon in Iraq. This might occur due to diversity of factors. This study aims to identify the factors influencing construction projects cost that are potentially controllable by main contractors. A field study through a questionnaire survey was directed to a sample of related Iraqi professional engineers from general contracting companies at both public and private sectors. Their opinions on the impact and frequency of each factor were investigated. The questionnaire offered (59) factors classified in (8) categories namely; legislations, financial and economic, design, contractual, site management, material, labor and equipment. The factors …

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Effect Of Heating Borehole Spacing On Plasticity Of Expansive Soil, Falah Rahil, Husam Baqir, Nabeel Tumma Aug 2026

Effect Of Heating Borehole Spacing On Plasticity Of Expansive Soil, Falah Rahil, Husam Baqir, Nabeel Tumma

Engineering and Technology Journal

This paper presents the effect of spacing between boreholes heating on plasticity of expansive soils. The expansive soils used were prepared artificially by mixing Kut clay with different percentages of bentonite. Nine laboratory models of expansive soils having dry unit weight of 17.8 kN/m3 with 6% initial water content were prepared inside a steel box of (300 mm × 300 mm × 400 mm height). A special heating system generates 400 Co for six hours was designed and manufactured for this purpose using 12 mm diameter electric heaters inserted through boreholes. Square pattern boreholes of 170 mm length with spacing …

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Influence Of Minimum Tension Steel Reinforcement On The Behavior Of Singly Reinforced Concrete Beams In Flexure, Ali Abdulsada, Raid Khalel, Kaiss Sarsam Aug 2026

Influence Of Minimum Tension Steel Reinforcement On The Behavior Of Singly Reinforced Concrete Beams In Flexure, Ali Abdulsada, Raid Khalel, Kaiss Sarsam

Engineering and Technology Journal

The requirements of minimum flexural reinforcement in the last decades have been a reason for controversy. The structural behavior of beams in bending is the best way of investigating and evaluating the minimum reinforcement in flexure. For this purpose, twelve singly reinforced concrete beams with a rectangular cross-section of (125 mm) width by (250 mm) height and (1800 mm) length were cast and tested under two-point loads up to failure. These beams were divided into three groups with different compressive strengths (25, 50, and 80 MPa). Each group consists of four beams with different amounts of tension steel reinforcement approximately …

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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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Flexural And Impact Properties Of Epoxy Composites Reinforced With Peanut Shell Particles, Hwazen Fadhil Aug 2026

Flexural And Impact Properties Of Epoxy Composites Reinforced With Peanut Shell Particles, Hwazen Fadhil

Engineering and Technology Journal

Natural materials have been extensively used as reinforcements in polymer matrices instead of non-degradable synthetic reinforcement such as carbon, glass or aramid. The use is because of their low density, good mechanical properties, availability, and biodegradability. Peanut shell is one such natural waste filler used, and it contains cellulose, hemicellulose, and lignin. Natural fiber/particle sources are not only strong and lightweight but are relatively very cheap. This paper offers the comparison of the flexural, and impact energy test properties of the peanut shell reinforced with the epoxy resin matrix. Peanut shells add into the epoxy resin matrix with various weight …

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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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Erosion Wear Behavior Of Natural And Industrial Material For Polymer Matrix Composite By Using Taguchi Analysis, Marwa Atallah Aug 2026

Erosion Wear Behavior Of Natural And Industrial Material For Polymer Matrix Composite By Using Taguchi Analysis, Marwa Atallah

Engineering and Technology Journal

The behavior of the erosion wear for samples manufactured by hand layup method of epoxy-supported fiberglass, eggshells and calcium carbonate particles were investigated. The test was performed in accordance with the experimental designs Taguchi (L 9) MINITAB (19) to select samples that have the resistance to erosion under the influence of factors. The erosion rate was assessed under the influence of three factors: weight fraction (2% to 8% eggshells and CaCO3 particles), sand size (450, 650, 850 μm) and angles (30º, 60º, 90º) with a fixed face distance of 30 cm, 10 hours and a flow rate of 45 L/min. …

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Studying The Settlement Of Backfill Sandy Soil Behind Retaining Wall Under Dynamic Loads, Reham Hamdi, Mohamed Fattah, Mohammed Aswad Aug 2026

Studying The Settlement Of Backfill Sandy Soil Behind Retaining Wall Under Dynamic Loads, Reham Hamdi, Mohamed Fattah, Mohammed Aswad

Engineering and Technology Journal

For a long time, the seismic examination of retaining walls has been contemplated by a few strategies dependent on the basic augmentation of Coulomb's limit equilibrium investigation. These techniques cannot gauge the removal of the refill soil upheld by the wall. A trial examination is completed to contemplate the vertical settlement on sandy soil under dynamic loads with other burden amplitudes, vibration frequencies, relative density, and various separations between the establishment and holding divider. The model balance utilized in this investigation is square. Dynamic burden test is done on cohesion less soil with three burden amplitudes (0.25 ton, 0.5 ton …

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Solar Photovoltaic Direct-Driven Air Conditioning System Performance In Iraq, Hashim Hussein, Ali Numan, Krar Kuder Aug 2026

Solar Photovoltaic Direct-Driven Air Conditioning System Performance In Iraq, Hashim Hussein, Ali Numan, Krar Kuder

Engineering and Technology Journal

The present research_paper is on photovoltaic air conditioning system using the direct drive method. The experimental system setup arranged in Iraq at Al-taje site at longitude 44.34 and latitude 33.432 during the summer season inside a room. The proposed off-grid system consists of an array of photovoltaic, battery used to store power, PWM (pulse width modulation) charge controller, and DC air cooler. During the examination of the system, proven success of this new type(dc air conditioner ) of client urges Iraq warm conditions as an alternative type used instead of the prevailing types of air conditioners (AC air conditioner )in …

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Influence Of Polarity Of Electro Discharge Machine (Edm) On Surface Roughness (Sr) And Metal Removal Rate (Mrr) Of Low Carbon Steel, Shahd Taqi, Saad Shather Aug 2026

Influence Of Polarity Of Electro Discharge Machine (Edm) On Surface Roughness (Sr) And Metal Removal Rate (Mrr) Of Low Carbon Steel, Shahd Taqi, Saad Shather

Engineering and Technology Journal

Electro discharge machining (EDM) is one of a thermal process that is used for remove of metal from the workpiece by spark erosion. The work of this machine depends on multiple variables. One of the more influential variants on this machine is the change of polarity and the use of this variable is not wide and the research depends on the polarity of the machinist. Essentially, the polarity of the tool (electrode) is positive and the workpiece is negative, this polarity can be reversed. This paper focuses on the influence of changing the polarity (positive and negative) on the surface …

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Influence Of Loading Pattern Regime On Behavior Of Self Compacting Concrete Voided Slab Strips Under Repeated Load, Ihsan Al-Shaarbaf, Amar Ali, Mohammed Ahmed Aug 2026

Influence Of Loading Pattern Regime On Behavior Of Self Compacting Concrete Voided Slab Strips Under Repeated Load, Ihsan Al-Shaarbaf, Amar Ali, Mohammed Ahmed

Engineering and Technology Journal

This study presents an experimental approach to investigate the structural behavior of normal and moderately high strength Self Compacted Concrete (SCC) voided slab strips under repeated loading system. The experiments were carried out on eight one-way simply supported slabs. Four of them have been tested under two types of repeated loading regime. The required number of cycles of the first load pattern (R1) to achieve permanent damage in the slab is more than 40 cycles, while the second type of repeated loading regime (R2) requires more than 20 cycles to achieve complete damage in the slab for the selected loading …

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The Influence Of Shear Strain On The Torsion Capacity Of Hybrid Beams, Alyaa Mohammed, Kaiss Sarsam, Qais Hasan Aug 2026

The Influence Of Shear Strain On The Torsion Capacity Of Hybrid Beams, Alyaa Mohammed, Kaiss Sarsam, Qais Hasan

Engineering and Technology Journal

This research discusses experimentally the shear strain of the reinforcement concrete hybrid beams composed of reactive powder concrete (RPC) at the peripheral and conventional concrete (CC) at the core beams under torsional strength tests. Shear strain is usually represented by is explained as the tangent of the angle and is be like the length of deformation at its maximum divided by the length of perpendicular in the plane of the force application. Twelve reinforced concrete beams are tested having the following dimensions: 100, 200 and 1500mm as width, height and length respectively with thickness of the RPC concrete were 40 …

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Impact Strength, Flexural Modulus And Wear Rate Of Pmma Composites Reinforced By Eggshell Powders, Aseel Abdullah, Hussein Jaber, Hanaa Al-Kaisy Aug 2026

Impact Strength, Flexural Modulus And Wear Rate Of Pmma Composites Reinforced By Eggshell Powders, Aseel Abdullah, Hussein Jaber, Hanaa Al-Kaisy

Engineering and Technology Journal

In the present study, the impact strength, flexural modulus, and wear rate of poly methyl methacrylate (PMMA) with eggshell powder (ESP) composites have been investigated. The PMMA used as a matrix material reinforced with ESP at two different states (including untreated eggshell powder (UTESP) and treated eggshell powder (TESP)). Both UTESP and TESP were mixed with PMMA at different weight fractions ranged from (1-5) wt.%. The results revealed that the mechanical properties of the PMMA/ESP composites were enhanced steadily with increasing eggshell contents. The samples with 5 wt.% of UTESP and TESP additions give the maximum values of impact strength, …

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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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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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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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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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Hydrological Model For Derbendi-Khan Dam Reservoir Watershed Using Swat Model, Thair Khayyun, Imzahim Abdulkareem, Ali Hayder Aug 2026

Hydrological Model For Derbendi-Khan Dam Reservoir Watershed Using Swat Model, Thair Khayyun, Imzahim Abdulkareem, Ali Hayder

Engineering and Technology Journal

In this study, the watershed’s runoff of Derbendi-Khan dam reservoir within the upper part of Diyala River reach the northeast of Iraq was modeled by Soil Water Assessment Tool (SWAT). The model calibration and validation were based on monthly measured inflow to the dam reservoir. They extended for a period between 1979 and 2008 with a warm-up period of two years, twenty-year for calibration, and eight-year for validation. Sequential Uncertainty Fitting version 2 (SUFI2) automatic calibration algorithm method used for model calibration and sensitivity analysis. Results demonstrate that the model performance for the studied watershed which is evaluated, with many …

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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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A Study On The Behavior Of Composite Concrete And Open Web Steel Joists, Marwah Abduljabbar, Wael Baldawi, Mohammed Hamood Aug 2026

A Study On The Behavior Of Composite Concrete And Open Web Steel Joists, Marwah Abduljabbar, Wael Baldawi, Mohammed Hamood

Engineering and Technology Journal

In this research, the results of three composite open web steel joist static tests are presented along with the results of companion pushout tests. The effect of shear connection degree and span-to-depth ratio on the behavior of composite open web joists under distributed static loading is reviewed and discussed, followed by a comparison of results of the shear stud strength from push-out tests, back-calculated from the ultimate capacity of the composite joist tests, and to the provisions in the AISC, EC4, NZS, SJI, and BS5950. Specimen test results of the studied span-to-depth ratios showed that the load-deflection behavior was similar …

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