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Articles 841 - 870 of 195910

Full-Text Articles in Engineering

Effect Of Tigris River's Stage On The Groundwater Level, Mustafa Al-Tahir, Thair Khayyun Jul 2026

Effect Of Tigris River's Stage On The Groundwater Level, Mustafa Al-Tahir, Thair Khayyun

Engineering and Technology Journal

The research studies the effect of change of the Tigris  River's surface stage on groundwater movement by building a three-dimension model  using GMS model for a catchment area in Baghdad city. The model is built and calibrated by using the information of 16 wells for the year 2015 . Three scenarios of river elevation stage are used when the stage  elevation is maximum, average and minimum. The movement of groundwater according to the results was from the north-west to the Tigris River location. Also, the results show the velocity of groundwater in case of the minimum water surface level stage …

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Real-Time Hand Gesture Extraction Using Python Programming Language Facilities, Azher Fahad, Hassan Hassan, Salma Abdullah Jul 2026

Real-Time Hand Gesture Extraction Using Python Programming Language Facilities, Azher Fahad, Hassan Hassan, Salma Abdullah

Engineering and Technology Journal

Hand gesture recognition is one of communication in which used bodily behavior to transmit several messages. This paper aims to detect hand gestures with the mobile device camera and create a customize dataset that used in deep learning model training to recognize hand gestures. The real-time approach was used for all these objectives: the first step is hand area detection; the second step is hand area storing in a dataset form to use in the future for model training. A framework for human contact was put in place by studying pictures recorded by the camera. It was converted the RGB …

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Wheelchair Movement Based On Convolution Neural Network, Maisaa Kodher, Jammila Saud, Hani Hassan Jul 2026

Wheelchair Movement Based On Convolution Neural Network, Maisaa Kodher, Jammila Saud, Hani Hassan

Engineering and Technology Journal

This paper intends to develop a methodology for helping amputees and crippled people old, by ongoing voice direction and association between patient and personal computer (PC) where these blends offer a promising response for helping the debilitated people. The major objective of this work is accurately detected audio orders via a microphone of an English language (go, stop, right and left) in a noisy environment by the proposed system. Thus, a patient that utilizes the proposed system can be controlling a wheelchair movement. The venture depends on preparing an off-line dataset of audio files are included 10000 orders and background …

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Optimized Pid Control Of Quadrotor System Using Extremum Seeking Algorithm, Abdullah Muhsen, Safanah Raafat Jul 2026

Optimized Pid Control Of Quadrotor System Using Extremum Seeking Algorithm, Abdullah Muhsen, Safanah Raafat

Engineering and Technology Journal

This paper presents the development of an automatic tuning of conventional PI-D controllers for Quadrotor system. The most critical problem of tuning the parameters of the PID, is that they can drastically affect the performance of the system. Accordingly, Extremum seeking (ES) algorithm is utilized here to reduce a selected cost function that brings the required performance aspects. The results show that the ES-PID controller provides better stability and performance as compared with only PI-D controller. The parameters of ES-PID controller have been successfully tuned and modified to reach the desired destination with significantly less overshoot, oscillations, and faster convergence.

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Preparation Of Nickel Oxide Microparticles By Pulsed Laser Ablation And Application To Gas Sensors, Nedal Hussain, Luma Abbas, Lamyaa Latif Jul 2026

Preparation Of Nickel Oxide Microparticles By Pulsed Laser Ablation And Application To Gas Sensors, Nedal Hussain, Luma Abbas, Lamyaa Latif

Engineering and Technology Journal

Nickel oxide (NiO) microparticles were synthesized by pulsed laser ablation in double deionized water and intensively studied using Nd:YAG laser. The obtained sample was examined by X-ray diffraction, XRD measurement which tests the existence of polycrystalline. The structural parameters introduced and surface morphology was studied using field emission scanning electron microscopy devices. The optical properties of microparticles in a liquid were investigated through UV-VIS spectroscopy. The CO/CO2 sensing properties of the NiO microstructure sensors were systematically investigated, and the effects of different laser fluencies on the CO/CO2 sensing characteristics were analyzed. XRD measurements reflected the existence of polycrystalline, the optical …

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Investigating The Effect Of Magnetite (Fe3o4) Nanoparticles On Mechanical Properties Of Epoxy Resin, Ehab Kaadhm, Khansaa Salman, Ahameed Raja Jul 2026

Investigating The Effect Of Magnetite (Fe3o4) Nanoparticles On Mechanical Properties Of Epoxy Resin, Ehab Kaadhm, Khansaa Salman, Ahameed Raja

Engineering and Technology Journal

In this paper, study the effects of magnetite nanomaterial Fe3O4 on the mechanical properties of epoxy. Dispersion of Fe3O4 nanoparticles in the epoxy resin was performed by ultrasonication. The samples of the nanocomposites were prepared using the casting method. The nanocomposites contain epoxy resins as a matrix material incorporated by different weight percentages of magnetite Fe3O4 that varies from 0wt.% to 15wt.% as a reinforcing material. The epoxy with the additive reinforcement materials Fe3O4 was slowly mixed in a sonication bath for 15 minutes, then the mixture poured into silicon molds. Field Emission Scanning Electron Microscopy FESEM and X-ray diffraction …

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An Experimental Study Of Porous Hydroxyapatite Scaffold Bioactivity In Biomedical Applications, Auday Mehatlaf, Alaa Atiyah, Saad Farid Jul 2026

An Experimental Study Of Porous Hydroxyapatite Scaffold Bioactivity In Biomedical Applications, Auday Mehatlaf, Alaa Atiyah, Saad Farid

Engineering and Technology Journal

Hydroxyapatite is one of the most bioactive materials used in tissue engineering due to its excellent biocompatibility and chemical composition which is equivalent to the mineral element of bone. In this study, polymer sponge replication method was used to fabricate porous hydroxyapatite scaffolds. Pure phase of hydroxyapatite scaffolds and the chemical bonding were verified via Fourier Transform Infrared and X-ray diffraction. Emission scanning electron microscopy (F E S E M) examination showed that the proposed scaffold has high interconnected pores that were achieved just after sintering at temperatures 1350 ºC for 2 hours. The percentage porosity values were estimated to …

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Outdoor Localization In Mobile Robot With 3d Lidar Based On Principal Component Analysis And K-Nearest Neighbors Algorithm, Hanan Atiyah, Mohammed Y. Jul 2026

Outdoor Localization In Mobile Robot With 3d Lidar Based On Principal Component Analysis And K-Nearest Neighbors Algorithm, Hanan Atiyah, Mohammed Y.

Engineering and Technology Journal

Localization is one of the potential challenges for a mobile robot. Due to the inaccuracy of GPS systems in determining the location of the moving robot alongside weathering effects on sensors such as RGBs (e.g. rain and light-sensitivity(. This paper aims to improve the localization of mobile robots by combining the 3D LiDAR data with RGB-D images using deep learning algorithms. The proposed approach is to design an outdoor localization system. It is divided into three stages. The first stage is the training stage where 3D LiDAR scans the city and then reduces the dimensions of 3D LiDAR data to …

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The Effect Of The Waste Of Materials And Carbon Nanotube On The Concrete Incorporated With Steel Fibers, Mayada Saleem, Farhad. Othman, Alla Abdul-Hameed Jul 2026

The Effect Of The Waste Of Materials And Carbon Nanotube On The Concrete Incorporated With Steel Fibers, Mayada Saleem, Farhad. Othman, Alla Abdul-Hameed

Engineering and Technology Journal

The addition of agricultural and industrial solid wastes and nanomaterials to concrete combined with steel fibers to improve the mechanical and electrical properties of concrete was investigated. This approach could be used in advanced applications in electromagnetic shielding and conductive concrete. Steel fibers were used at 2%wt. of sand and (induction furnace slag (EIF), carbon nanotube (CNT), steel wool fibers, prepared corn husks) at 0.5 and 1 wt.%. of cement. Obtained results of using 1% for both carbon nanotube and steel wool with steel fibers in the mixture 4 and 6, respectively, showed the highest rates of compressive strength. A …

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A Desirability Function For Evaluation Of Corrosion Behavior For Nanocoated- Steel Using Electroless Technique, Muroog Shinyar, Abbas Hussein, Laith Abbas Jul 2026

A Desirability Function For Evaluation Of Corrosion Behavior For Nanocoated- Steel Using Electroless Technique, Muroog Shinyar, Abbas Hussein, Laith Abbas

Engineering and Technology Journal

The current work is conducting an experimental investigation into the effect of those technical parameters, called nanomaterial, bath temperature and plating time on the micro-hardness and corrosion rate of electroless plated low carbon steel undergoing electroless deposition operation. It was used to prepare (Ni-P/ Nano TiO2), (Ni-P/ Nano Al2O3) and (Ni -P/ Nano SiO2) alloys in this research. The Taguchi design is used to describe the variations located within the corrosion and mechanical properties. To achieve a comprehensive study, a Taguchi-based design was used to account for all applicable combinations of factors. Experimental models had been advanced that linking the …

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Study Of Cus Thin Films Deposited By Pld Simulated For Prism Based Spr Sensor, Isaac Najm, Ali Alwahib, Suad Kadhim Jul 2026

Study Of Cus Thin Films Deposited By Pld Simulated For Prism Based Spr Sensor, Isaac Najm, Ali Alwahib, Suad Kadhim

Engineering and Technology Journal

Copper Sulfide CuS thin film was prepared using pulsed laser deposition PLD technique and characterized by X-ray and SEM. The optical, structural, and morphological properties are examined at different energies 500 mJ, 600 mJ, 700 mJ, and 800 mJ. The best result was 600 mJ which annealed at various annealing temperatures 300°C, 350°C, 400°C, and 450°C. The effect of thermal annealing on CuS thin film was examined X-ray and SEM. CuS Film was simulated using a prism-based SPR optical sensor. This paper introduces the optical test study of CuS thin film deposited by pulsed laser deposition technique on the quartz …

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Effect Of Input Parameters On Sr And Mrr For Tool Steel Aisi L2 By Electric Discharge Machine (Edm), Shukry Aghdeab, Raead Rashed, Tahseen Salman Jul 2026

Effect Of Input Parameters On Sr And Mrr For Tool Steel Aisi L2 By Electric Discharge Machine (Edm), Shukry Aghdeab, Raead Rashed, Tahseen Salman

Engineering and Technology Journal

Electric discharge machine (EDM) or may be call electric spark machine is one of the most important cutting process or manufacturing process because it gives high accurate dimension and can be produced the most complex shape. In this present material removal rate and surface roughness for tool steel AISI L2 studied. The input parametric for this process is current, pulse on time (Ton) and pulse off time (Toff).A full factorial method is used to formulate machine parameters and find the optimal process parameters of an electric spark. The result shows that the Surface roughness increasing with increasing current and pulse …

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Nonlinear Finite Element Analysis Of The Seismic Retrofitting Of Existing Buildings, Shirin Abdulla, Mohammed Hamood, Mohammed Al Hamdani Jul 2026

Nonlinear Finite Element Analysis Of The Seismic Retrofitting Of Existing Buildings, Shirin Abdulla, Mohammed Hamood, Mohammed Al Hamdani

Engineering and Technology Journal

Finite Element Analysis (FEA) is a helpful tool for finding solutions to civil engineering problems. In this paper, the numerical analysis was performed by simulating an experimental test by using FEA tools, Abaqus /CAE2019 was used to develop and retrofit solutions to sustain existing structures for seismic hazard. The 3D building was modeled, and nonlinear analysis was adopted. This experimental building was tested at the Joint Research Centre (JRC) of the ELSA facility that is in Ispra-Italy. This model was a building of a full-scale four-story tested using the pseudo-dynamic (PsD) techniques.The retrofitting model was done by adding new RC …

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Indices-Based Evaluation Of Spatiotemporal Distribution Of Drought Within Derbendkhan Dam Watershed, Mahmoud Saleh Al-Khafaji, Rusul Al-Ameri Jul 2026

Indices-Based Evaluation Of Spatiotemporal Distribution Of Drought Within Derbendkhan Dam Watershed, Mahmoud Saleh Al-Khafaji, Rusul Al-Ameri

Engineering and Technology Journal

Drought is one of the most significant natural disasters in Iraq. It has a strong impact on the water resources in Iraq. Consequently, it causes massive environmental damage, economic deficiency, and social problems to the country. Therefore, more considerations towards the study and management of drought has become of vital importance in recent decades.In this paper, three drought indices (DIs) were computed for evaluation of the spatiotemporal of drought within Derbendikhan Dam Watershed (DDW) in the Diyala River Basin, Iraq. Based on the monthly weather data for the period (1984 – 2013) downloaded from the Climate Forecast System Reanalysis (CFSR) …

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Effect Of Hollow Shape On The Behavior Of Reinforced Self-Compacting Concrete Slender Column Under Eccentric Loading, Maha Ghaddar Jul 2026

Effect Of Hollow Shape On The Behavior Of Reinforced Self-Compacting Concrete Slender Column Under Eccentric Loading, Maha Ghaddar

Engineering and Technology Journal

Results of testing reinforced self-compacted concrete slender columns having longitudinal holes concealing PVC pipe in their cross sections under axial compression load and uniaxial bending are presented in this paper. The effect of hollow shape on the performance of slender columns having 200x200mm quadratic cross section and 1300mm long under concentric and eccentric loads was investigated. Three different shapes of central hole: circular, square, and lozenge pattern in addition to the different load eccentricity values were considered to investigate the axial loading resistance and cracking load, lateral and longitudinal deflections of the columns. Test results have showed that altering the …

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Ansys-Based Structural Analysis Study Of Elevated Spherical Tank Exposed To Earthquake, Mahmoud Al-Khafaji, Ahlam Mohammed, Muna Salman Jul 2026

Ansys-Based Structural Analysis Study Of Elevated Spherical Tank Exposed To Earthquake, Mahmoud Al-Khafaji, Ahlam Mohammed, Muna Salman

Engineering and Technology Journal

Damage of elevated tanks during earthquakes can jeopardize the supply of drinking water and causes significant economic losses. Therefore, seismic analysis of tanks containing liquids requires special consideration. Knowledge of liquid hydrodynamic pressures developed during an earthquake is important for tank design. This paper aims to verify the dynamic reaction of structural systems of spherical elevated steel tanks containing water, and determine the natural frequencies that contribute to the physical response, as well as seismic analysis of the tank. A three dimensional Finite Element Model was developed to identify the main parameters involved in this response for three different fullness …

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Quadratic Support Vector Machine And K-Nearest Neighbor Based Robust Sensor Fault Detection And Isolation, Ahmed Abed, Sabah Gitaffa, Abbas Issa Jul 2026

Quadratic Support Vector Machine And K-Nearest Neighbor Based Robust Sensor Fault Detection And Isolation, Ahmed Abed, Sabah Gitaffa, Abbas Issa

Engineering and Technology Journal

Fault detection plays a serious role in high-cost and safety-critical processes. There are two main drivers for continuous improvement in the area of early detection of process faults safety and reliability of technical plants. Detect fault in Geophone string sensors (SG-10) are very important in oil exploration to avoid loss economy. Methods are developed to enable earlier detection of process faults than the traditional limit and trend checking based on a single process variable and the development of these methods is a key matter. Classification methods will be used for pattern recognition and as such is appropriate for fault detection. …

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Experimental Investigation Of The Optimal Location Of Pcm Capsules In A Hollow Brick Wall, Hayder Abbas, Jalal Jalil, Sabah Ahmed Jul 2026

Experimental Investigation Of The Optimal Location Of Pcm Capsules In A Hollow Brick Wall, Hayder Abbas, Jalal Jalil, Sabah Ahmed

Engineering and Technology Journal

In this paper, an experimental investigation of the integration of PCM capsules as insulation material into the outer or inner rows of hollow brick to find out the optimum location of the PCM capsules that give the best thermal performance of a wall. A test model consists of two identical cubical rooms was designed and fabricated to test the wall with and without PCM in a natural outdoor condition in Diwaniyah city in Iraq during the summer. The results show that the PCM will reduce the temperature of the inner side of the test wall and test room by 2.7℃ …

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Gasoil Hydro-Desulfurization Using Catalyst Synthesized From Iraqi Kaolin Clay: Optimization With Response Surface Methodology (Rsm), Khlood Alkhafaji, Zaidoon Shakor, Bashir Al-Zaidi, Sattar Hussein [email protected] Jul 2026

Gasoil Hydro-Desulfurization Using Catalyst Synthesized From Iraqi Kaolin Clay: Optimization With Response Surface Methodology (Rsm), Khlood Alkhafaji, Zaidoon Shakor, Bashir Al-Zaidi, Sattar Hussein [email protected]

Engineering and Technology Journal

This search aim to study the feasibility of hydro-desulfurization (HDS) of gas oil in fixed bed reactor by using economic support catalyst alumina meta kaolin (AMK) under various operating condition, i.e. Temp. (240−320 ◦C), Press. (3–12 bar), WHSV (2–6 h−1) at H2/HC ratio (50 vol./vol.). The support catalyst was prepared from Iraq kaolin and characterization by using scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX) and Fourier transform infrared (FTIR) spectroscopy.  Experimental design was used to determine which parameter (e.g. temperature, pressure and WHSV) has a greater influence on the obtained HDS and the optimum condition of process. The …

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A Review On Path Planning Algorithms For Mobile Robots, Mustafa Abed, Omar Lutfy, Qusay Al-Doori Jul 2026

A Review On Path Planning Algorithms For Mobile Robots, Mustafa Abed, Omar Lutfy, Qusay Al-Doori

Engineering and Technology Journal

Mobile robots use is rising every day. Path planning algorithms are needed to make a traveler of robots with the least cost and without collisions. Many techniques have been developed in path planning for mobile robot worldwide, however, the most commonly used techniques are presented here for further study. This essay aims to review various path planning strategies for mobile robots using different optimization methods taken recent publisher’s paper in last five year.

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Flexural Properties Of Functionally Graded Polymer Alumina Nanoparticles, Mahdi Shareef, Ahmed Al-Khazraji, Samir Amin Jul 2026

Flexural Properties Of Functionally Graded Polymer Alumina Nanoparticles, Mahdi Shareef, Ahmed Al-Khazraji, Samir Amin

Engineering and Technology Journal

In this paper, a functionally graded polymer nanocomposite (FGPNC) was arranged via mixing the Alumina (Al2O3) nanoparticles (50 – 100 nm) with an epoxy matrix through five layers of 1.2 mm thickness for each layer using hand lay–up technique. Different volume fractions were taken (0, 1, 2, 3 and 4) % of the used nanoparticles and were cast in molds made from acrylic for creating the graded composite sheet in the thickness direction. The prepared isotropic specimen was tested by tensile and compressive test. The results showed that the (4% Vf of Al2O3) has the best enhancement of the ultimate …

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Humidification Effect On The Performance And Emissions Of (Di) Diesel Engine Running On Diesel Fuel With Biodiesel Blended Nano Additives, Hussein Jumaa, Mahmoud Mashkour Jul 2026

Humidification Effect On The Performance And Emissions Of (Di) Diesel Engine Running On Diesel Fuel With Biodiesel Blended Nano Additives, Hussein Jumaa, Mahmoud Mashkour

Engineering and Technology Journal

The effect of humidification of the air on the performance of a compression ignition engine operating on diesel, biodiesel with nano additives was investigated. The experiment was carried out on a single-cylinder, four-stroke, naturally aspirated water-cooled, direct injection Ricardo (E6/US) diesel engine at a constant speed of 1800 rpm, and varying loads. A mixture of Biodiesel (waste cooking oil) and diesel fuel by four ratios (B5, B10, B15, and B20) was used in the experiment. Besides, five concentrations of Iron oxide nanoparticles (Fe2O3, with particle size 20 nm) as fuel-additives were prepared (10 ppm, 30 ppm, 50 ppm, 70 ppm, …

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Modeling And Control Of Wheeled Mobile Robot With Four Mecanum Wheels, Sameh Hasana, Hasan Alwan Jul 2026

Modeling And Control Of Wheeled Mobile Robot With Four Mecanum Wheels, Sameh Hasana, Hasan Alwan

Engineering and Technology Journal

This work presents a driving control for the trajectory tracking of four mecanum wheeled mobile robot (FMWMR). The control consists of Backstepping-Type 1 Fuzzy Logic-Particle swarm optimization i.e.,(BSC-T1FLC-PSO). The kinematic and dynamic models have been derived. Backstepping controller (BSC) is used for finding controlled torques that generated from robot motors while Type-1 fuzzy logic control (T1FLC) as well as particle swarm optimization (PSO) used for finding the appropriate values of gain parameters of BSC. Square trajectory has been selected to test the performance of the control system of FMWMR. MATLAB/ Simulink is used to simulate the results. It has been …

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Experimental Investigation Of Surface Roughness Using Uncoated And Coated Tungsten Carbide Cutting Tool In Turning Operation, Frzdaq Thamer, Ali Abbar, Farhad. Othman Jul 2026

Experimental Investigation Of Surface Roughness Using Uncoated And Coated Tungsten Carbide Cutting Tool In Turning Operation, Frzdaq Thamer, Ali Abbar, Farhad. Othman

Engineering and Technology Journal

The cutting process is an important process of industrialization. It is requisite to using advantage quality cutting tools in order to preserve the type of product. Coating on the cutting tool has a substantial effect in terms of mechanical properties and the end results of the product. The cutting tool can be manufactured in various material types, but today's cemented tungsten carbide is the most commonly used material in the tool industry because its properties comply with manufacturers' requirements. This study investigates the impact of an Al2O3 coated cutting tool relative to an uncoated cutting tool on the dry cutting …

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Dynamic Power Consumption In Cmos N Bit Full-Adder Circuit, Amal Hasan, Qusay Al-Doori Jul 2026

Dynamic Power Consumption In Cmos N Bit Full-Adder Circuit, Amal Hasan, Qusay Al-Doori

Engineering and Technology Journal

This paper discusses power consumption in the full adder circuit using some fabrication technologies. Though many studies related to power consumption in the full adder circuit were performed, however, few investigations about the effect of the number of bits on the power consumption are addressed. In this paper, the effect of changing the number of bits on the power consumption and time delay of the full adder circuit will be observed and the effect of changing the technology size is going to be calculated. The results will show that there is a direct relationship between the number of bits and …

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Analysis Of Distribution System Reconfiguration Under Different Load Demand In Al-Kut City By Using Pso Algorithm, Zahraa Dawood, Rashid Al-Rubayi Jul 2026

Analysis Of Distribution System Reconfiguration Under Different Load Demand In Al-Kut City By Using Pso Algorithm, Zahraa Dawood, Rashid Al-Rubayi

Engineering and Technology Journal

Network reconfiguration is the best way to inquisitive a flexible, reliable and effective distribution network. An efficient optimization technique that uses Particle Swarm Optimization (PSO) is described and analyzed with the goal of reducing power losses and enhancing the voltage profile in the distribution network by reconfiguring the network, taking into account the branch current limit, branch capacity limit, bus voltage limits and radial structure constraint (no meshed loop). The approach is applied to the part of AL-KUT city distribution system (TAMOZE region system) to attain an optimum network configuration in connection with power loss. Two dissimilar load situations are …

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Protection Coordination Of 33/11 Kv Power Distribution Substation In Iraq, Thamir Abdul-Wahhab, Yamur Obied Jul 2026

Protection Coordination Of 33/11 Kv Power Distribution Substation In Iraq, Thamir Abdul-Wahhab, Yamur Obied

Engineering and Technology Journal

The coordination between protective devices is the process of determining the most appropriate timing of power interruption during abnormal conditions in the power system. The aim of this work is to coordinate the protection of the 33/11 kV power distribution substation in Iraq using the CYME 7.1 software package. In this paper overcurrent and earth fault relays are simulated in two cases, with time delay setting and instantaneous setting, to obtain the Time Current Characteristics (TCC) curves for each Circuit Breaker (CB) relay of Al-Karama substation (2×31.5 MVA, 33/11 kV) in Babil distribution network. The short circuit current at each …

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Secured Medical Image Hashing Based On Frequency Domain With Chaotic Map, Amira Jabbar, Ashwaq Hashim, Qusay Al-Doori Jul 2026

Secured Medical Image Hashing Based On Frequency Domain With Chaotic Map, Amira Jabbar, Ashwaq Hashim, Qusay Al-Doori

Engineering and Technology Journal

Recently, online-medicine got increased global interest, particularly during COVID19 pandemic. Data protection is important in the medical field since when promoting telemedicine applications, it is necessary to protect the patient data and personal information. A secured process is needed to transmit medical images over the Internet. In this paper hash algorithm is employed to protect the data by using powerful features from the coupled frequency domains of the Slantlet Transformation (SLT) and the Discrete Cosine Transform (DCT). The Region of Interest (ROI) is localized from an MRI image then extraction of a feature set is performed for calculating the hash …

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Effect Of Co2 Laser Fluence On Cladding Geometrical Dimensions Alternations, Mohammed Kadhim, Mahdi Hanon, Suhair Hussein Jul 2026

Effect Of Co2 Laser Fluence On Cladding Geometrical Dimensions Alternations, Mohammed Kadhim, Mahdi Hanon, Suhair Hussein

Engineering and Technology Journal

Geometrical dimensions could play a potential role in the function of laser cladding of nickel-base powder on the cold-rolled carbon steel substrate. The geometrical dimensions and their impact on the efficiency of the process of laser cladding of nickel-base powder (Ni -10wt% Al) on cold rolled 0.2% carbon steel substrate was investigated. This work focused on the effect of laser-specific energy input of CO2laser. The geometrical dimensions of cladding regions are including cladding width, cladding height, depth of dilution, contact angle, dilution area, cladding area, and heat-affected zone dimensions determinations. The laser power (1.8 kW) was used at different traverse …

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Effect Of Adding Tio2on Some Mechanical Properties Of Galloy, Osamah Khadhair, Rana Anaee, Kadhum Shabeeb Jul 2026

Effect Of Adding Tio2on Some Mechanical Properties Of Galloy, Osamah Khadhair, Rana Anaee, Kadhum Shabeeb

Engineering and Technology Journal

Because of importance the Ga alloys in dental applications, many attempts were  done  to  improve  the  properties  of  this  alloy. The  currentwork involves  addition  of  TiO2nanotube  powder  to  Galloy  to  improve  somemechanical  properties.  These  properties  included  hardness,  compression, and creep. The characterization of prepared TiO2/Galloys with five wt% of TiO2(1, 2, 3, 4, and 5 wt%) was done by XRD and SEM/EDS. The results showed  that  the  hardness,  compression, were  increased  with  increasing percentage  of  added  TiO2,  while  creep  decrease.Some phases  such as β-Sn,  Ag2Ga  and  Ag9In4were  contributed  to  improve  the  properties  of  new TiO2/Galloycomposites.

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