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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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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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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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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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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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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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Improvement Of Formability Of Aisi 1006 Sheets By Hydroforming With Die In Square Deep Drawing, Adil Jaber, Adnan Mohammed, Karem Younis Mar 2026

Improvement Of Formability Of Aisi 1006 Sheets By Hydroforming With Die In Square Deep Drawing, Adil Jaber, Adnan Mohammed, Karem Younis

Engineering and Technology Journal

An effort has been made to improve the formability of (1006) AISI steel alloy sheets in deep drawing of square-shaped parts with flat bases through hydroforming. To achieve this goal, the manufacturing process involved the use of a newly developed experimental setup for sheet hydroforming with a die, which was created by the researchers. The key design features of this setup aimed for simplicity and modularity, allowing for potential utilization with oil pressures of up to 100 MPa. The obtained results were compared with those of conventional deep drawing. Both processes were examined under specific conditions to form identical cups …

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Investigation And Prediction Of The Impact Of Fdm Process Parameters On Mechanical Properties Of Pla Prints, Mostafa Abdullah, Tahseen Abbas Mar 2026

Investigation And Prediction Of The Impact Of Fdm Process Parameters On Mechanical Properties Of Pla Prints, Mostafa Abdullah, Tahseen Abbas

Engineering and Technology Journal

Complex geometry components can be produced using FDM-based additive manufacturing (AM). In this study, the compressive and tensile strength were investigated, considering variations in layer thickness (0.2, 0.25, and 0.3 mm), density (40%, 60%, and 80%), and infill pattern (tri-hexagon, zig-zag, and gyroid). The experiment was designed using the Taguchi technique and carried out on a commercial FDM 3D printer, involving nine specimens with different processing settings. The compression standard ASTM D695 and tension standard ASTM D638-02a were used for evaluation. The results indicated that infill density significantly impacted compressive and tensile strength, contributing to 65% and 60% of the …

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Synthesis And Characterization Of Nip-Tic-Sic Nanocomposite Coating Via Electroless Process On Alumina Substrate, Rusul Abd, Abbas Hussien, Laith Abbass Mar 2026

Synthesis And Characterization Of Nip-Tic-Sic Nanocomposite Coating Via Electroless Process On Alumina Substrate, Rusul Abd, Abbas Hussien, Laith Abbass

Engineering and Technology Journal

Present-day industrial need high surface engineering quality since it deals with many material properties that are applied in modern applications. Autocatalytic plating of material surfaces enhances their mechanical and chemical properties. This study used electroless plating to create (NiP-TiC-SiC) nanocomposite coatings on alumina ceramic under various time and temperature deposition conditions to get the best performances of nanocomposite coatings. Different coating morphologies have been created, as seen in (FESEM) images. The (EDX) results show that the (NPs) were effectively integrated and that the main elements of the coating are nickel and phosphorus. The (XRD) pattern validates the existence of metallic …

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Experimental And Theoretical Analysis To Produce Pentagonal Cup In Deep Drawing Process, Zainab Mohsen, Waleed Jawad, Assel Abed Mar 2026

Experimental And Theoretical Analysis To Produce Pentagonal Cup In Deep Drawing Process, Zainab Mohsen, Waleed Jawad, Assel Abed

Engineering and Technology Journal

The manufacturing industry heavily relies on deep drawing due to its remarkable ability to produce intricate symmetrical and asymmetrical shapes with accuracy and efficiency. This research aimed to create a deep drawing tool capable of producing a pentagonal cup measuring 41mm in diameter and 30mm in height. This was achieved by conducting numerical simulations and experimental tests using two different methods. The first method involved converting an 80mm diameter circular blank into a pentagonal cup through a drawing operation, while the second method involved redrawing a cylindrical cup into a pentagonal shape. The study also analyzed the impact of these …

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The Influence Of The Inclusion Of Nano Ceramic Particles On The Pmma Composite Properties For Biomaterials Applications, Aya Shahir, Aseel Al.Zubaidi, Wafaa Salih Mar 2026

The Influence Of The Inclusion Of Nano Ceramic Particles On The Pmma Composite Properties For Biomaterials Applications, Aya Shahir, Aseel Al.Zubaidi, Wafaa Salih

Engineering and Technology Journal

This study examines the effects of reinforcing PMMA acrylic resin with different Nanoparticle types: Silica (SiO2) (67.8nm), Titania (TiO2) (57.3nm), and Talc powders (TP) (80.1nm). This was done by using the ultrasonic mixing method for dispersing the nano-powder in the matrix and using them at three different proportions (0. 5, 1, and 1.5%) to improve the properties of PMMA composite materials for medical applications. The characteristic functional groups associated with Nano-ceramic particles and PMMA in the composite specimens were confirmed by FT-IR spectroscopy. Also, this research investigates some mechanical properties, including (tensile strength, compression strength, elastic modulus, hardness, and surface …

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Dynamic Characterization Assessment And Optimization Of Reactive Powder Underwater Concrete, Doha Alsaffar, Basil Al-Shathr, Suhair Abed Mar 2026

Dynamic Characterization Assessment And Optimization Of Reactive Powder Underwater Concrete, Doha Alsaffar, Basil Al-Shathr, Suhair Abed

Engineering and Technology Journal

This study investigates the dynamic properties of Reactive Powder Underwater Concrete (RPUWC), a novel composite integrating attributes of Reactive Powder Concrete and underwater cast concrete. The study focuses on assessing the impact resistance, dynamic modulus of elasticity, rigidity, and Poisson's ratio. The influence of micro steel fibers (MS) at different volume fractions (1%, 1.25%, and 1.5%) and different anti-washout admixture (AWA) dosages (0.5 %, 0.7%, and 0.9%) are examined. The findings indicate that increasing the MS content improves crack resistance and energy absorption, resulting in a substantial 155.6% enhancement in the first crack resistance when using 1.5% MS. Additionally, ultimate …

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Single Variable Thick Plate Buckling Problems Using Double Finite Sine Transform Method, Charles Ike Mar 2026

Single Variable Thick Plate Buckling Problems Using Double Finite Sine Transform Method, Charles Ike

Engineering and Technology Journal

This paper derives buckling solutions for single variable thick plate buckling problems using the double finite sine transform method (DFSTM). The problem governing partial differential equation (GPDE), originally formulated by Shimpi and others, uses a refined plate theory (RPT) and accounts for transverse shear deformations, rendering it applicable to thick plates. The thick plate is simply supported and subjected to (i) uniform uniaxial compressive load in the x direction. (ii) uniform biaxial compressive load in the x and y axes. The DFSTM was applied to the GPDE, and the problem transformed into an algebraic equation, which was simpler in this …

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A Static And Dynamic Analysis Of A High-Speed Turbo Machine Foundation, Ameer Ahmed, Mohammed Fattah, Makki Mohsen Mar 2026

A Static And Dynamic Analysis Of A High-Speed Turbo Machine Foundation, Ameer Ahmed, Mohammed Fattah, Makki Mohsen

Engineering and Technology Journal

The foundation plays a significant role in safe and efficient turbo machinery operation. Turbomachinery generates harmonic load on the foundation due to its high-speed rotating motion, which causes vibration in the machinery foundation. Any increase in machine vibration reduces the machine's performance. In studying engineering problems, using numerical programs helps get a well-designed foundation. Before conducting a parametric study, the program used shall be validated and/or verified by conducting a series of analyses to ensure that the program output represents the reference studied cases well. In many cases, the real problem is simplified by assuming that the machine's loads are …

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Waste Rubber Pre-Treatments And Their Effects On Compressive And Flexural Strength Of Modified Sifcon, Ali Hashim, Basil Al-Shathr Mar 2026

Waste Rubber Pre-Treatments And Their Effects On Compressive And Flexural Strength Of Modified Sifcon, Ali Hashim, Basil Al-Shathr

Engineering and Technology Journal

Slurry-infiltrated fiber concrete (SIFCON) is a comparatively new and unique steel fiber-reinforced concrete (FRC) form. SIFCON possesses many desirable characteristics, including high strength and ductility. Sustainable concrete is one of the most critical types of concrete for the current environment. An enormous volume of waste rubber tires is produced globally due to the expansion of the automobile industry. This study's primary purpose is to assess the impact of employing pre-treated waste rubber tires in slurry-infiltrated fiber concrete on its flexural and compressive strengths. Based on flexural and compressive strengths, an experimental program was conducted to evaluate the flexural and compressive …

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Stay In Place Formwork, Encased Reinforced Concrete Column: A Review, Zainab Abbas, Maan Hassan, Iqbal Gorgis Mar 2026

Stay In Place Formwork, Encased Reinforced Concrete Column: A Review, Zainab Abbas, Maan Hassan, Iqbal Gorgis

Engineering and Technology Journal

Formwork systems are required for almost all cast-in-place concrete construction. However, some forms cost too much, often exceeding 30% of the entire cost of the concrete construction. Thus, the stay-in-place (SIP) formwork, a premanufactured permanent constructional member that holds fresh concrete to the intended sizes and stays in the site to afford loads over the construction lifecycle, could be an auspicious alternative to the classic formwork procedure. Several types of stay-in-place (SIP) formworks for columns have been reviewed, like PVC tubes, CFRP, steel tubes, and the composite of two or more types of stay-in-place (SIP) formwork used together. Moreover, some …

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A Proposed New Mix Proportioning Method For Fly Ash-Based Geopolymer Concrete, Mazin Alhifadhi, Tareq Al-Attar, Qais Hasan Mar 2026

A Proposed New Mix Proportioning Method For Fly Ash-Based Geopolymer Concrete, Mazin Alhifadhi, Tareq Al-Attar, Qais Hasan

Engineering and Technology Journal

Global warming on planet Earth results from the high emission of greenhouse gases, especially CO2. The Portland cement industry releases high amounts of CO2 and is responsible for about 5-8% of total emissions. Efforts have been made to look for alternative cementless binders to mitigate the impact on the environment. Geopolymers are one of the highlighted alternatives and can be obtained from the reaction of any aluminosilicate material with an alkaline solution. Aluminosilicate materials are found in byproduct materials such as fly ash. Geopolymer concrete is a promising environmentally friendly option. However, previous conventional mix proportioning methods for fly ash-based …

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Some Properties Of Sustainable Concrete With Rubber Waste Aggregate, Rafid Motloq, Wasan Khalil, Eethar Dawood Mar 2026

Some Properties Of Sustainable Concrete With Rubber Waste Aggregate, Rafid Motloq, Wasan Khalil, Eethar Dawood

Engineering and Technology Journal

The cumulative quantities of non-biodegradable solid tire waste, which are byproducts of transport vehicles, contribute to environmental pollution.. This study seeks to address this issue by investigating the impact of using this waste as a replacement for natural coarse and fine aggregate in varying ratios (10%, 15%, and 20% as coarse aggregate, and 5%, 10%, and 15% as fine aggregate by volume) to create sustainable concrete. All mixtures incorporate 10% silica fume (SF) as a cement replacement by weight. Results reveal decreased workability, fresh density, compressive, and splitting tensile strength with increasing rubber replacement proportions. However, utilizing tire rubber aggregate …

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Studying The Possibility Of Producing Paving Flags From Geopolymer Concrete Containing Local Wastes, Nazar Al- Obeidy, Wasan Khalil Mar 2026

Studying The Possibility Of Producing Paving Flags From Geopolymer Concrete Containing Local Wastes, Nazar Al- Obeidy, Wasan Khalil

Engineering and Technology Journal

Geopolymer concrete is an inorganic composite material created by interacting alkaline substances with an aluminosilicate source and aggregate. Precast building units are considered the most prominent uses of geopolymer concrete, and the utilization of recycled steel fibres and rubber from damaged tires that are non-biodegradable to reduce environmental pollution. The results of this investigation show the possibility of using geopolymer concrete with and without the inclusion of crumbed rubber and recycled steel fibers from damaged tires in the production of paving flags with dimensions of 400 × 200 × 50 mm class c according to IQS 1107. Four types of …

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Studying Characteristics And Strength Of The Unsaturated Gypseous Soil With Various Saturation Degrees, Ahmed Abood, Mohammed Fattah, Aqeel Al-Adili Mar 2026

Studying Characteristics And Strength Of The Unsaturated Gypseous Soil With Various Saturation Degrees, Ahmed Abood, Mohammed Fattah, Aqeel Al-Adili

Engineering and Technology Journal

The main objective of this study is to determine the appropriateness of unsaturated gypseous soil as a subgrade layer for carrying foundations. A comprehensive laboratory testing program was implemented to investigate the geotechnical characteristics and behavior of unsaturated gypseous soil. Tests that are physical included specific gravity, classification tests, relative density, Proctor compactions, single and double oedometer collapse potential, and static triaxial compression (CU-test). Chemical testing, Scanning Electron Microscopy (SEM), and Electronic Dissipation x-ray Scanning (EDS) analyses were also carried out. The tests were performed for samples prepared at 70% relative density of the natural gypseous soil. Tests are performed …

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Enhancing Pullout Load Performance Of Under-Reamed Piles In Homogeneous Layered Clay: A Numerical Comparative Study, Anji Al-Bayati, Mohammed Al-Neami, Falah Rahil Mar 2026

Enhancing Pullout Load Performance Of Under-Reamed Piles In Homogeneous Layered Clay: A Numerical Comparative Study, Anji Al-Bayati, Mohammed Al-Neami, Falah Rahil

Engineering and Technology Journal

A 3D numerical model generated using PLAXIS-3D software was used in the present research to predict the behavior of under-reamed piles under pullout loading conditions with presumed soil Mohr-Coulomb failure. The under-reamed pile was embedded in homogeneous, layered clay soil, with stiff clay overlain by soft clay and soft clay overlain by stiff clay. The piles were chosen per the Indian Code (IS 2911) specification, and two variables were studied: bulb provision and soil layering. Inhomogeneous clay with varying cohesion values (20, 40, and 80 kPa) and under the same conditions, the pullout capacity was improved compared to a straight …

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Free Vibration Of Thin Beams On Winkler Foundations Using Generalized Integral Transform Method, Charles Ike Mar 2026

Free Vibration Of Thin Beams On Winkler Foundations Using Generalized Integral Transform Method, Charles Ike

Engineering and Technology Journal

The determination of free vibration frequencies of thin beams on Winkler foundations is important in their design to avoid resonant failures when the excitation frequency equals the least natural frequency. This article presents the determination of natural transverse vibration frequencies of Euler-Bernoulli beams on Winkler foundations using the Generalized Integral Transform Method (GITM). The problem is governed by a fourth-order partial differential equation (PDE) and boundary conditions dependent on the end restraints. The governing PDE is transformed into an algebraic eigenvalue problem for harmonic vibrations and harmonic response. Analytical solutions of the governing equations are difficult and complex. Hence, other …

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Elzaki Transform Method For Natural Frequency Analysis Of Euler-Bernoulli Beams, Charles Ike, Tarig Elzaki Mar 2026

Elzaki Transform Method For Natural Frequency Analysis Of Euler-Bernoulli Beams, Charles Ike, Tarig Elzaki

Engineering and Technology Journal

Free vibration analysis of thin beams under dynamic excitation is important in design to prevent resonance failures that occur when the excitation frequency coincides with the natural vibration frequency. In this paper, the Elzaki transform method (ETM) is used, for the first time, to solve the free vibration problem of thin beams. The beam is assumed to be homogeneous and prismatic, and the vibration is assumed to be harmonic. As a result, the field equation becomes a fourth-order homogeneous ordinary differential equation (ODE). The Elzaki transform method is chosen in this study due to its proven ability to solve ODEs, …

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Uncracked Palm Kernel Shell Effect On Compressive Strength Of Concrete, Chidiebere Ezenkwa, Thaddeus Elogu Mar 2026

Uncracked Palm Kernel Shell Effect On Compressive Strength Of Concrete, Chidiebere Ezenkwa, Thaddeus Elogu

Engineering and Technology Journal

In recent times, the production of concrete has become a significant concern due to the rapid population growth and the depletion of raw materials. In this research, we investigated the use of Uncracked Palm Kernel Shell (UPKS) as a replacement for crushed granite in concrete production, with replacement percentages of 0%, 10%, 20%, 30%, and 100%. The concrete mix combined Ordinary Portland Cement with river sand and coarse aggregates (granite and UPKS). The properties of fresh concrete were assessed using the slump test, while the compressive strength test was conducted after curing the samples for 7, 14, 21, and 28 …

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Cold-Bonded Lightweight Synthetic Aggregate Involving High Reactive Attapulgite At Different Curing Conditions, Mohammed Abbas, Waleed Abbas Mar 2026

Cold-Bonded Lightweight Synthetic Aggregate Involving High Reactive Attapulgite At Different Curing Conditions, Mohammed Abbas, Waleed Abbas

Engineering and Technology Journal

This study aimed to develop an eco-friendly, lightweight, and synthetic aggregate (SLA) based on clay suitable for use in structural lightweight concrete. The researchers utilized the cold-bonded pelletization process to agglomerate pozzolanic materials, specifically attapulgite extracted from a quarry, and crushed into a fine filler. The appropriate calcination temperature for manufacturing this clay as a pozzolanic material is 750°C. A total of 22 mixes were created using a combination of high reactive attapulgite (HRA) and cement (PC), with the attapulgite replacement rate varying from 100-50% by a 10% decrement. Different types of curing methods, including oven-dry, oven-water, room-water, and room-room, …

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Effect Of Bridge Piers Locations And Flow Intensity On Morphological Change In A 180-Degree River Bend, Abdurazaq Abdulwahd, Jaafar Maatooq Mar 2026

Effect Of Bridge Piers Locations And Flow Intensity On Morphological Change In A 180-Degree River Bend, Abdurazaq Abdulwahd, Jaafar Maatooq

Engineering and Technology Journal

Bridges when it crossing rivers often required multiple piers for support. One of has a limited investigation is the impact of piers on scouring and morphological aspects when a bridge crossing sharp-bend of river. Consequently, it is crucial to investigate the hydraulic behavior of water flow in these areas due to the presence of these piers. In present study, an experimental program was conducted on a laboratory flume featuring a two-pier bridge within a 180-degree (sharp) bend to accomplish this. The piers were strategically positioned at 90 and 150 degrees within the bend. The results indicated that the bridge within …

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Review On The Physicl Properties Of Polyethylene Oxide, Fahad Kamal, Nahida Hameed, Evan Salim, Subash Gopinath Mar 2026

Review On The Physicl Properties Of Polyethylene Oxide, Fahad Kamal, Nahida Hameed, Evan Salim, Subash Gopinath

Engineering and Technology Journal

Solid polymeric electrolytes have become crucial today due to their stability and high conductivity. Recently, lithium ion-doped polymeric electrolytes have gained intense attention for their superior ability to create highly conductive electrolytes for batteries and energy storage. This innovative electrolyte type has displaced many traditional systems due to their flammability and bulkiness. Traditional liquid organic electrolytes pose risks due to their flammable and unstable nature. Solid-state composite electrolytes offer both mechanical stability and electrical conductivity by using solid polymeric matrices like polyethylene oxide and polyurethane reinforced with inert fillers like alumina and titanium dioxide. Polyethylene oxide (PEO)-based materials show promise …

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A Comparative Study Of Antibacterial Activity Of Zno And Tio2 Nanoparticles Against Gram-Positive And Gram-Negative Bacteria, Ghaed Salman Mar 2026

A Comparative Study Of Antibacterial Activity Of Zno And Tio2 Nanoparticles Against Gram-Positive And Gram-Negative Bacteria, Ghaed Salman

Engineering and Technology Journal

Using the sol-gel technique, this study successfully synthesized two types of nanoparticles, ZnO and TiO2. The Fourier-transform infrared (FTIR) spectrum exhibited a broad peak, providing insights into crucial chemical bonds. The average grain sizes, 18.6 nm for ZnO and 12.6 nm for TiO2 were determined through X-ray diffraction (XRD). Scanning electron microscopy (SEM) images of the (ZnO & TiO2) powder revealed the presence of pores and agglomeration. The antimicrobial efficacy of these nanoparticles was evaluated against Gram-negative bacteria (E. coli and Proteus) and Gram-positive bacteria (Staph. aureus). The results demonstrated the capability of both ZnO and TiO2 to impact bacterial …

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