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Impact Of Acute Flight Training Stress On Cardiovascular Health, Toni Butler, Noah Robbins, Sophia Vaden, Bryan Hinton Mar 2026

Impact Of Acute Flight Training Stress On Cardiovascular Health, Toni Butler, Noah Robbins, Sophia Vaden, Bryan Hinton

Student Research Symposium (SRS)

Student pilots face a unique set of stressors that are a part of their flight training. These acute stressors can have immediate and long-term impacts on their physiological and psychological well-being. Using near-infrared spectroscopy (NIRS) to measure vascular endothelial function (a marker of cardiovascular health), this investigation will help us understand how the stressors involved in acute flight training affects the cardiovascular health of student pilots. We will test the hypothesis that acute flight training stress obtained from a single bout of flight training reduces cardiovascular function as shown by a reduced post-occlusive reactive hyperemic (PORH) response. Cardiovascular health will …

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The Electrical And Mechanical Aspects Of Aluminum And Copper Resistance Spot Weld Joints, Marwah Fakhri, Ibtihal Mahmood, Ahmed Al-Mukhtar Mar 2026

The Electrical And Mechanical Aspects Of Aluminum And Copper Resistance Spot Weld Joints, Marwah Fakhri, Ibtihal Mahmood, Ahmed Al-Mukhtar

Engineering and Technology Journal

Resistance spot welding (RSW) is widely used in the automotive industry, particularly for copper-aluminum alloys in electric cars. RSW joint conductivity is crucial for electric vehicles. Welded parts may fracture due to tension, altering conductivity. The study examines resistance spot post-weld joint metallurgy and deformation-induced conductivity changes. The electric resistance of similar and dissimilar RSW joints was examined during tensile tests. Metallurgical tests for RSW joints revealed an increase in grain size from the base metal (BM) to the heat-affected zone (HAZ) and finally the fusion zone (FZ). Satisfactory shear tension strength results were obtained for dissimilar joints (Al-Cu) at …

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Improving The Charging Rate And Energy Recovery Of Triplex Tube Heat Storage-Based Pcm With Mono/Hybrid Nanoparticles, Ibrahim Sadiq, Sattar Aljabair, Abdulhassan Karamallah Mar 2026

Improving The Charging Rate And Energy Recovery Of Triplex Tube Heat Storage-Based Pcm With Mono/Hybrid Nanoparticles, Ibrahim Sadiq, Sattar Aljabair, Abdulhassan Karamallah

Engineering and Technology Journal

Latent thermal energy storage systems are widely utilized to match the inequality between heat supply and demand. Despite these systems' wide range of uses in various applications, their high potential is limited by the slow charging rate. The target of this study is to augment the thermal performance of paraffin-based on triplex tube heat storage by dispersion of two different types of conductive mono nanoparticles (Al2O3, CuO) and hybrid Nano additives of various volume fractions (0.4, 0.8, 1.6, 3.2%) into paraffin wax. The experimental work involves measurements and preparation of the considered Nano-PCM. The enthalpy porosity model and finite volume …

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Numerical Study Of The Effect Of Thermal Insulation And Window-To-Wall Ratio On Reducing The Thermal Loads Of The Residential Sector In Iraq, Abd Hussein, Ahmed Saleh, Hamdi Ahmed Mar 2026

Numerical Study Of The Effect Of Thermal Insulation And Window-To-Wall Ratio On Reducing The Thermal Loads Of The Residential Sector In Iraq, Abd Hussein, Ahmed Saleh, Hamdi Ahmed

Engineering and Technology Journal

The climate change that the world is witnessing has cast a greater shadow on the Middle East. Iraq, one of the region's countries, is experiencing harsh thermal conditions. With the increase in population growth in the country, there was a significant development in the housing sector, which exacerbated the thermal loads that the residential sector requires to overcome harsh weather conditions. This leads to increased energy consumption. To reduce this consumption and energy waste, a simulation study was conducted using the TRNSYS program to analyze the thermal behavior of a building whose walls consist of Gypsum, Juss, brick, and mortar, …

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Analyzing Energy Performance And Assessing Dry Moisture Content Of Briquettes Through Numerical Investigations, Oluwaseyi Alabi, Timothy Adeyi, Sakiru Ekun Mar 2026

Analyzing Energy Performance And Assessing Dry Moisture Content Of Briquettes Through Numerical Investigations, Oluwaseyi Alabi, Timothy Adeyi, Sakiru Ekun

Engineering and Technology Journal

This study presents a comprehensive numerical investigation into the energy evaluation and determination of dry moisture content of briquettes, a vital aspect of renewable energy production. Utilizing advanced computational fluid dynamics (CFD) modeling and simulations, we explored key parameters impacting briquette combustion, such as moisture content, size, density, and temperature profiles. The research demonstrates that these factors significantly influence combustion behavior, with the CFD model accurately predicting mass loss curves and burnout times. The process was completed in 10 minutes, reaching a temperature of 300K and yielding gases consisting of CO2, CO, and H2O, while the devolatilization front was assumed …

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Effect Of The Magnetic Field And Exhaust Gas Recirculation On The Performance And Emissions Of Biodiesel Engine Coated With Nanoceramics, Qusai Mahdi, Mahmoud Mashkour, Ibtihal Mahmoud Mar 2026

Effect Of The Magnetic Field And Exhaust Gas Recirculation On The Performance And Emissions Of Biodiesel Engine Coated With Nanoceramics, Qusai Mahdi, Mahmoud Mashkour, Ibtihal Mahmoud

Engineering and Technology Journal

This study investigates the influence of ceramic coating on diesel engine efficiency through comprehensive analysis. The investigation was conducted on a four-stroke Kirloskar TV1 diesel engine. The study further examined the effects of employing an 8000 Gauss magnetic field and exhaust gas recirculation on engine performance. The surfaces of the head of the cylinder, the piston, and both the inlet and exhaust valves are then covered with nano-ceramic materials. Atmospheric plasma spray-created nanostructured thermal barrier coatings (TBCs). The feeding powder type is 7% Y2O3-ZrO2 with a particle size of less than 100 nm yttria stabilized zirconia (YSZ) nano X (S4007) …

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State-Of-The-Art Review Into Signal Processing And Artificial Intelligence-Based Approaches Applied In Gearbox Defect Diagnosis, Asaad Dubaish, Alaa Jaber Mar 2026

State-Of-The-Art Review Into Signal Processing And Artificial Intelligence-Based Approaches Applied In Gearbox Defect Diagnosis, Asaad Dubaish, Alaa Jaber

Engineering and Technology Journal

Various industrial applications, including rotating and reciprocating machinery, depend on gears. Therefore, a sudden breakdown of the gears could result in substantial financial losses. Due to this, extensive studies have focused on defect diagnosis. Both machinery maintenance decisions and preventive maintenance techniques have been aided by vibration analysis. An increased vibration is a warning sign that a machine is about to malfunction or break down. Observing and evaluating the machine's vibration pulses can identify the nature and extent of the issue and, as a result, predict when the machine will fail. The vibration signal may identify gearbox defects early on …

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Enhancing Wind Tunnel Computational Simulations Of Finite Element Analysis Using Machine Learning-Based Algorithms, Luttfi Al-Haddad, Alaa Jaber, Latif Ibraheem, Sinan Al-Haddad, Naseem Ibrahim, Fawaz Abdulwahed Mar 2026

Enhancing Wind Tunnel Computational Simulations Of Finite Element Analysis Using Machine Learning-Based Algorithms, Luttfi Al-Haddad, Alaa Jaber, Latif Ibraheem, Sinan Al-Haddad, Naseem Ibrahim, Fawaz Abdulwahed

Engineering and Technology Journal

Wind tunnels are essential for examining aircraft model aerodynamics, accurately simulating real-world conditions, and enhancing design and performance evaluations. This study introduces a novel technique to improve the time and accuracy of stress distribution forecasts in wind tunnel simulations. This method combines Finite Element Analysis (FEA) with two regression models: Support Vector Machine (SVM) and k-Nearest Neighbors (kNN). The investigation begins with a thorough analysis of ANSYS fluent flow data, which reveals intricate fluid dynamics details within the wind tunnel. A comparative analysis of stress projections, supplemented by Root Mean Square Error (RMSE) metric, demonstrates the proposed methodology’s viability. High …

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Investigating The Effect Of Electroplated Coatings On Single-Phase Fluid Flow And Heat Transfer In Microchannel, Hasan Hussein, Ekhlas Fayyadh, Moayed Hasan Mar 2026

Investigating The Effect Of Electroplated Coatings On Single-Phase Fluid Flow And Heat Transfer In Microchannel, Hasan Hussein, Ekhlas Fayyadh, Moayed Hasan

Engineering and Technology Journal

A significant heat flux affects the efficacy and durability of most equipment. Cooling these devices is the primary concern, prompting specialists to propose and investigate various solutions. For these applications, microchannels are regarded as a possibility. Experiments were conducted in this study to determine the effect of an electroplating coating on the characteristics of a single-phase flow. As the working fluid for the experiments, deionized water was used. During the investigations, a microchannel of 0.3mm width and 0.7mm depth with an average roughness of 18.64 nm was machined; the inlet temperature was maintained at 30°C, and the Reynolds number ranged …

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Application Of Discrete Wavelet Transform For Condition Monitoring And Fault Detection In Wind Turbine Blades: An Experimental Study, Ahmed Ogaili, Mohsin Hamzah, Alaa Jaber, Ehsan Ghane Mar 2026

Application Of Discrete Wavelet Transform For Condition Monitoring And Fault Detection In Wind Turbine Blades: An Experimental Study, Ahmed Ogaili, Mohsin Hamzah, Alaa Jaber, Ehsan Ghane

Engineering and Technology Journal

Effective structural monitoring maximizes efficiency in wind turbines, a crucial renewable energy asset. Using advanced condition monitoring techniques is crucial for reliability. This experiment shows how to use DWT and FFT for wind turbine blade fault detection. DWT allowed for multiresolution analysis of vibration signals from a healthy and eroded lab-scale turbine blade under controlled wind speeds. A 5-level DWT decomposition identified frequency sub-bands with localized fault information. The FFT post-processing of level 5 approximation coefficients revealed precise modal frequency shifts between blade states. The healthy blade showed a dominant 16 Hz mode that matched operational dynamics. Erosion caused a …

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Experimental Study Of The Double Pipe Heat Exchanger For Heat Transfer And Pressure Drop Characteristics Of The Grooved Tube, Natiq Fadhil, Amer Aldabbagh, Falah Hatem Mar 2026

Experimental Study Of The Double Pipe Heat Exchanger For Heat Transfer And Pressure Drop Characteristics Of The Grooved Tube, Natiq Fadhil, Amer Aldabbagh, Falah Hatem

Engineering and Technology Journal

Experiments are conducted to investigate the heat transfer and pressure drop characteristics of corrugated tubes and rod baffles in a shell-and-tube heat exchanger. One of the effective techniques to improve heat transfer is to use corrugated tubes. This article investigates rod baffles with varied corrugation depths and corrugated tubes for (1 start). In the heat exchanger's shell side, where a constant wall temperature was attained on the tube side, water was employed as the working fluid after being heated at the wall. Corrugation ratios (e/dh) of 0.1 and 0.13, pitch (p) of 10, 20, and 30mm, and two types (x/d) …

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An Analytical Solution To Buckling Of Thick Beams Based On A Cubic Polynomial Shear Deformation Beam Theory, Charles Ike Mar 2026

An Analytical Solution To Buckling Of Thick Beams Based On A Cubic Polynomial Shear Deformation Beam Theory, Charles Ike

Engineering and Technology Journal

This paper presents analytical solutions for the buckling of thick beams. The Bernoulli-Euler beam theory (BEBT) overestimates their critical buckling load. This paper has derived a cubic polynomial shear deformation beam buckling theory (CPSDBBT) from first principles using the Euler-Lagrange differential equation (ELDE). It develops closed-form solutions to differential equations using the finite sine transform method. The formulation considers transverse shear deformation and satisfies the transverse shear stress-free boundary conditions. The governing equation is developed from the energy functional, Õ, by applying the ELDE. The domain equation is obtained as an ordinary differential equation (ODE). The finite sine transformation of …

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Aerodynamic Characteristics Evaluation Of S-Series Airfoils, Hamzah Jaffar, Laith Al-Sadawi, Abdulkareem Khudair, Till Biedermann Mar 2026

Aerodynamic Characteristics Evaluation Of S-Series Airfoils, Hamzah Jaffar, Laith Al-Sadawi, Abdulkareem Khudair, Till Biedermann

Engineering and Technology Journal

The present study utilizes the commercial software ANSYS-Fluent to explore the influence of the geometry of thick S- S-series airfoil on the near-wake region. Four different S-series airfoils, namely S809, S811, S814, and S818, were investigated at a wide range of angles of attack, which were varied from 0 degrees to 20 degrees with an increment of 2 degrees and at a Reynolds number based on chord length Re = 1x106. Analysis of the resultant data revealed that the aerodynamic performance of the S811 and S818 airfoils superseded that of the S809 and S814 airfoils. To illustrate, at the critical …

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Solar Photovoltaic Thermal Cells Performance Improvement Using Jet, Phase Change Material And Nanoparticles Cooling Technology: A Review, Mays Shaeli, Monier Baccar, Jalal Jalil Mar 2026

Solar Photovoltaic Thermal Cells Performance Improvement Using Jet, Phase Change Material And Nanoparticles Cooling Technology: A Review, Mays Shaeli, Monier Baccar, Jalal Jalil

Engineering and Technology Journal

The cooling of solar photovoltaic (PV) cells is reviewed in this study. The critical analysis aims to increase PV cell life span and electrical efficiency. To improve the caliber of future studies, this paper examines the implications of earlier studies as well as technical specifics for optimization. Additionally, some of the benefits and drawbacks of various cooling methods are explored. The PV cells cool rate and the PV system's jet impingement cooling technology in PV systems are more effective than any conventional PV cooling systems. Phase change material (PCM) is one of the effective methods used to cool PV cells, …

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Enhancing The Solar Still Performance Using Different Designs Of Absorber With Heat Storage Materials And Different Wick Materials: A Review, Lujain Hyal, Jalal Jalil, Abduljabbar Hanfash Mar 2026

Enhancing The Solar Still Performance Using Different Designs Of Absorber With Heat Storage Materials And Different Wick Materials: A Review, Lujain Hyal, Jalal Jalil, Abduljabbar Hanfash

Engineering and Technology Journal

Despite water covering more than two-thirds of the planet, improving potable water production technologies is a significant issue because of the increased demand for treated water. Solar desalination presents a simple, costless energy and friendly technology which utilizes solar energy and gives great incentive to decrease pollution effects produced by burning fossil fuels. In order to address the global drinking water shortage, particularly in rural and distant locations, this technique can be employed to give pure water to people using a solar still, which in many respects, is one of the most significant feasible uses of solar energy and perfect …

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Phase Change Material In Glazing Windows System: A Review, Mina Nsaif, Mounir Baccar, Jalal Jalil Mar 2026

Phase Change Material In Glazing Windows System: A Review, Mina Nsaif, Mounir Baccar, Jalal Jalil

Engineering and Technology Journal

As far as thermal insulation is concerned, phase change materials (PCM) have a very good potential to be excellent insulation materials due to their thermal properties like low thermal conductivity and high latent heat. The researchers started to incorporate the walls and windows with PCM to reduce the internal surface temperature and indoor temperature of the room. This paper focuses on double and triple-glazed windows’ thermal performance, different filling insulation materials, ventilation windows, and thermochromic glazing. In addition, a detailed discussion on the effect of changing the thickness and the thermal characteristics of the PCM and its influence on the …

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Studying The Influence Of Variable Inlet Guide Vane With The Physical Faults On The Performance Of Industrial Gas Turbine At Part-Load Operation, Waleligne Salilew, Zainal Abdul Karim, Tamiru Lemma Mar 2026

Studying The Influence Of Variable Inlet Guide Vane With The Physical Faults On The Performance Of Industrial Gas Turbine At Part-Load Operation, Waleligne Salilew, Zainal Abdul Karim, Tamiru Lemma

Engineering and Technology Journal

This research work presents a gas turbine performance investigation. Researchers have put efforts into this field of study; however, the influence of the concurrence of variable inlet guide vane (VIGV) drift, fouling, and erosion on the three-shaft gas turbine’s performance during part-load operation has remained unexplored. Therefore, this study addresses this gap. First the gas turbine design point and off-design performance model have been developed by utilizing the original engine manufacturer data provided. The accuracy of the models was validated, and the maximum mean absolute percentage error of the design point performance model is shown at exhaust temperature prediction, it …

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Investigating The Impact Of Process Parameters On Thinning And Formability In Aluminum Alloy Aa 1050 Incremental Sheet Metal Forming, Safaa Ghazi, Aqeel Bedan, Maher Salloom Mar 2026

Investigating The Impact Of Process Parameters On Thinning And Formability In Aluminum Alloy Aa 1050 Incremental Sheet Metal Forming, Safaa Ghazi, Aqeel Bedan, Maher Salloom

Engineering and Technology Journal

ISMF is a potential manufacturing technology that uses progressive deformation to create complicated shapes. ISMF produces sheet metal consecutively using targeted tool movement. This innovative method increases component precision, material waste reduction, and design flexibility. A tool is moved along a set path over a flat metal sheet while twisting forces are applied to get the needed shape. SPIF could be used in the medical equipment, aerospace, automotive, and building industries, but it is only profitable in certain situations because it is slower than other sheet-forming methods. SPIF-based die-less making makes it easier to shape. To make cone-shaped structures with …

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Investigation Of The Effect Of Spif Parameters On The Thickness Of Al 2024 Alloy, Halah Habeeb, Muhsin Jweeg, Ali Khleif Mar 2026

Investigation Of The Effect Of Spif Parameters On The Thickness Of Al 2024 Alloy, Halah Habeeb, Muhsin Jweeg, Ali Khleif

Engineering and Technology Journal

Sheet metal forming is one of the most commonly used manufacturing processes because millions of different parts are formed daily. In the single-point incremental forming process (SPIF), the change in the thickness of the sheet material is an essential parameter because it is an indicator of the occurrence of failure. In this context, this study investigates the effect of SPIF parameters on the thickness of the Al 2024 alloy used in producing the truncated pyramid. The process parameters were the sheet thicknesses of (1, 1.5, and 2) mm, the step depths of (0.2, 0.4, and 0.6) mm, and the wall …

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Investigation Of The Level Of Adoption Of The Lean Philosophy In Small And Medium Enterprises Using Integrated Fuzzy Assessment Model Based On Fuzzy Dematel / Fuzzy Topsis, Zainab Al-Baldawi, Allaeldin Kassam, Sawsan Al-Zubaidi Mar 2026

Investigation Of The Level Of Adoption Of The Lean Philosophy In Small And Medium Enterprises Using Integrated Fuzzy Assessment Model Based On Fuzzy Dematel / Fuzzy Topsis, Zainab Al-Baldawi, Allaeldin Kassam, Sawsan Al-Zubaidi

Engineering and Technology Journal

Lean Production is a continuous improvement philosophy derived from the Toyota Production System (TPS) aimed at improving the operational efficiency and performance of companies. Although the Lean philosophy has been widely applied in large enterprises, its implementation and adoption in small and medium-sized enterprises (SMEs) has remained relatively underexplored. In this paper, a fuzzy assessment model has been proposed that integrates Fuzzy Decision-Making Trial and Evaluation Laboratory (Fuzzy DEMATEL) and Fuzzy Technique for Order of Preference by Similarity to Ideal Solution (Fuzzy TOPSIS) to aim to investigate the level of implementation and adoption of the lean philosophy in SMEs through …

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Analyzing The Impact Of Fdm Parameters On Compression Strength And Dimensional Accuracy In 3d Printed Pla Parts, Hind Abdulridha, Tahseen Abbas Mar 2026

Analyzing The Impact Of Fdm Parameters On Compression Strength And Dimensional Accuracy In 3d Printed Pla Parts, Hind Abdulridha, Tahseen Abbas

Engineering and Technology Journal

Fused deposition modeling (FDM) is an additive manufacturing (AM) technique frequently used to create prototypes and parts with intricate geometrical designs. It is gaining popularity since it enhances products by removing the need for expensive equipment. The materials used, the printing process, and the parameters influence the mechanical properties of printed objects. The quality and functionality of the parts are impacted by FDM process parameters. This study focused on the impact of six parameters on the mechanical and physical properties of samples printed using the FDM machine (Creality Ender-5 Pro). The infill density percentage, infill pattern, layer thickness, shell thickness, …

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Integrating Grey Relation Analysis And Artificial Neural Networks For Optimal Machining Of Tungsten Carbide Composite Using Hybrid Electrochemical Discharge, Vian Najm, Tahseen Abbas, Shukry Aghdeab Mar 2026

Integrating Grey Relation Analysis And Artificial Neural Networks For Optimal Machining Of Tungsten Carbide Composite Using Hybrid Electrochemical Discharge, Vian Najm, Tahseen Abbas, Shukry Aghdeab

Engineering and Technology Journal

Hybrid Electrochemical Discharge Machining (ECDM) streamlines the manufacturing process for challenging materials. Tungsten carbide (WC) is widely recognized as a formidable material due to its exceptional hardness and its ability to maintain hardness even at elevated temperatures. This study has conducted a comprehensive investigation of the multi-response optimization of ECDM process parameters to enhance the machining of tungsten carbides, utilizing Grey Relation Analysis (GRA) and Artificial Neural Network (ANN) methods. This optimization's primary objective is to achieve the maximum Material Removal Rate (MRR) and machining depth. The study involved a systematically designed experiment based on the Taguchi design method. Scanning …

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Evaluation Of The Performance Of Steel Slag And Waste Glass As A Cement Replacement, Ahmed Azeez, Maan Hassan, Alaa Atiyah Mar 2026

Evaluation Of The Performance Of Steel Slag And Waste Glass As A Cement Replacement, Ahmed Azeez, Maan Hassan, Alaa Atiyah

Engineering and Technology Journal

The industrial development and growth in population activity caused an annual increase in solid wastes over the past decades. The emissions of CO2 from the cement industry are the main source of air pollution. Recycling wastes as cementitious materials conserve the ecosystem in different aspects, e.g., reduction of CO2 footprint. Consequently, the pozzolanic activity of two solid wastes abundantly available in Iraq, steel slag (SS) and waste glass (WG), were evaluated. This study aimed to replace them with ordinary Portland cement. This will achieve a sustainable, eco-efficient, and environmentally friendly construction industry. The Chemical analysis of the wastes by XRF …

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Using Taguchi Design To Compare The Corrosion Behavior Of Commercial Pure Ti Alloys Coated By Dip And Electrophoretic Deposition With Ysz, Marwan Hussein, Ali Mustafa, Makarim Abdulkareem Mar 2026

Using Taguchi Design To Compare The Corrosion Behavior Of Commercial Pure Ti Alloys Coated By Dip And Electrophoretic Deposition With Ysz, Marwan Hussein, Ali Mustafa, Makarim Abdulkareem

Engineering and Technology Journal

This study makes experimental evaluations of the corrosion and tip tests of  CP-Ti joint (commercial pure Ti) implant alloys coated with YSZ nanoceramic. A Taguchi design of experiments (DOE) strategy was used to create a thin adhesive covering utilizing dip coating and electrophoretic deposition techniques. An L9-type orthogonal Taguchi array determined how dip coating and electrophoretic deposition factors, such as temperature, voltage, YSZ concentration, time, and the degree of pulverizing the Ti alloy substrate, affected the deposition yield. The Ti alloys were coated using the optimal settings for the dip coating and electrophoretic deposition procedures as previously described, utilizing the …

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Comparison Between The Effect Of Adding Msgnp And B4c-Wc Nanoparticles On The Metallurgical And Mechanical Characterization Of Al-7075 Composites Produced By Stir Casting, Haneen Lateef, Saad Ali Mar 2026

Comparison Between The Effect Of Adding Msgnp And B4c-Wc Nanoparticles On The Metallurgical And Mechanical Characterization Of Al-7075 Composites Produced By Stir Casting, Haneen Lateef, Saad Ali

Engineering and Technology Journal

Metal Matrix Composite (MCC) reveals considerably better properties, such as low density, high tensile strength, hardness, and good resistance to wear compared with every alloy or other metal. The current study concentrated upon the assessment of the properties of aluminum matrix composites (AMCs) synthesis with the Al-7075 as a matrix and the MSGNPs that sieved to (35 nm) at different weight fractions percentages as reinforcements using stir-casting method and compared with Al7075/B4C-WC nanocomposites. These experiments aim to select the appropriate type and percentage of reinforcement particles for producing Al-7075 composites with the best mechanical properties. The mechanical properties, as well …

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Mechanical Strength Optimization For The Polylactic Acid Printed Parts In Material Extrusion Process Using Artificial Neural Network, Mustafa Abdulrazaq, Mohanned Al-Khafaji, Abdulkader Kadauw Mar 2026

Mechanical Strength Optimization For The Polylactic Acid Printed Parts In Material Extrusion Process Using Artificial Neural Network, Mustafa Abdulrazaq, Mohanned Al-Khafaji, Abdulkader Kadauw

Engineering and Technology Journal

Material Extrusion technology is one of the most widely used Additive Manufacturing processes due to its simplicity in use, affordable parts fabricating costs, product durability, and possibility for changing materials. Despite having many advantages, parts manufactured through this technique fall short in strength criteria. The present paper focuses on predicting and optimizing three critical printing parameters in additive manufacturing: printing temperature, extrusion width, and number of shells. A neural network model was built to predict the tensile and compressive strengths and optimize the process parameters for maximum strength. The full factorial design experiments found that higher strength is achieved at …

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Effect Of Ecap Routes On Mechanical Properties And Microstructure Of Aa6061-T4 Recycled Chips, Rawa Mohammed, Ayad Shahab Mar 2026

Effect Of Ecap Routes On Mechanical Properties And Microstructure Of Aa6061-T4 Recycled Chips, Rawa Mohammed, Ayad Shahab

Engineering and Technology Journal

Aluminum alloy finds strong suitability in automotive, sporting, goods aerospace, and weight reduction industries. Its blend of lightweight attributes and robust strength make it well-suited for crafting lightweight components and structures while upholding overall strength and performance standards. In this research, AA6061-T4 alloy chips underwent a recycling process involving hot extrusion followed by Equal Channel Angular Pressing. The influence of various routes and varied numbers of cycles on microstructure and mechanical characteristics were examined utilizing a die featuring angles of 90° and 20°. Two routes, BC and C, were scrutinized, and the outcomes displayed significant enhancements in properties for the …

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Improvement Of Performance Evaluation Using Hybrid Composite Electrode (Cu/Cr/Wc/Ag) In Electric Discharge Machining, Ahmed Abdulwahhab, Abbas Ibrahim Mar 2026

Improvement Of Performance Evaluation Using Hybrid Composite Electrode (Cu/Cr/Wc/Ag) In Electric Discharge Machining, Ahmed Abdulwahhab, Abbas Ibrahim

Engineering and Technology Journal

Electrical Discharge Machining (EDM) is a non-traditional technique widely used in various industries to remove material using electrical discharges. Finding a suitable electrode material that can resist high temperatures and efficiently remove material from the workpiece is a major difficulty in electrical discharge machining (EDM). Due to their exceptional electrical and thermal properties, composite electrodes of various metals have become extremely popular. In this study, a composite electrode (Cu-1%Cr-0.5%WC-1%Ag) manufactured using the stir casting technique will be utilized to evaluate the electrical discharge machining (EDM) process. The study compares the performance between conventional pure copper electrodes and composite electrode utilization …

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The Effect Of Calcium Carbonate-Nanoparticle On The Mechanical And Thermal Properties Of Polymers Utilizing Different Types Of Mixing And Surface Pre-Treatment: A Review Paper, Nashwan Mahmood, Mohammed Hikmat Mar 2026

The Effect Of Calcium Carbonate-Nanoparticle On The Mechanical And Thermal Properties Of Polymers Utilizing Different Types Of Mixing And Surface Pre-Treatment: A Review Paper, Nashwan Mahmood, Mohammed Hikmat

Engineering and Technology Journal

The effect of calcium carbonate nanoparticles (CaCO3) on the mechanical and thermal properties of various polymers was investigated in this review. The results were compared to scholarly research published between 2002-2022. Different polymers were evaluated, including Polypropylene (PP), High-density polyethylene (HDPE), Polyvinyl chloride (PVC), Low-density polyethylene (LDPE), Polyethylene (PE), and natural rubber (NR). Through this work, the effect of CaCO3 nanoparticles that act as fillers in polymeric materials has been reviewed. It can be concluded that mechanical and thermal properties can be decreased, increased, or unchanged by increasing and decreasing the fillers to obtain optimal results. It is reasonable to …

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Study Of Physical Properties Of Biocomposite Based On The Polymer Blends Used For Denture Base Applications, Wassan Hussain, Jawad Oleiwi, Qahtan Hamad Mar 2026

Study Of Physical Properties Of Biocomposite Based On The Polymer Blends Used For Denture Base Applications, Wassan Hussain, Jawad Oleiwi, Qahtan Hamad

Engineering and Technology Journal

In this study, two different types of polymers—Polyamide (PA) type (6) and Polyvinylpyrrolidone (PVP) type (K30), each added separately with a different weight fraction (0%, 2%, 4%, 6%) to Polymethylmethacrylate (PMMA) heat-cured resin as blend matrix—have been blended with heat-cured PMMA resin to develop the PMMA resin properties used for prosthesis complete denture. Sisal and coconut powder, two natural powders, were added separately to the polymer blend matrices with varying weight fractions (2%, 4%, 6%) to create composite specimens. Testing for density, water absorption, thermal conductivity, FTIR, and DSC were included in this study. The results show that adding reinforcing …

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