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Effect Of Carbonization On The Mechanical Properties Of Mild Steel Utilizing Oak Charcoal As A Carbon Source, Omer Mahmood Mar 2026

Effect Of Carbonization On The Mechanical Properties Of Mild Steel Utilizing Oak Charcoal As A Carbon Source, Omer Mahmood

Engineering and Technology Journal

Carburizing is a process that improves the mechanical properties of low-carbon steel, particularly its surface hardness. Introducing carbon into the steel's surface enhances the creation of a durable and resistant outer layer.  The technique is especially useful for low-carbon steel because it cannot be hardened by quenching and tempering. This work investigates the effects of solid carburizing on the mechanical properties of mild steel. Oak charcoal was used as a carbon source due to its local availability and low cost. The study examined how solid carburization affects the microstructure and mechanical characteristics of mild steel. Mild steel samples were carburized …

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Microwave Dielectric Properties Of Zn1-Xcuxwo4 (X= 0, 0.03)/Polymer Composites, Lamees Faeq, Saad Farid, Fadhel Hashim Mar 2026

Microwave Dielectric Properties Of Zn1-Xcuxwo4 (X= 0, 0.03)/Polymer Composites, Lamees Faeq, Saad Farid, Fadhel Hashim

Engineering and Technology Journal

The rapid growth in wireless telecommunication systems has spurred a strong interest in lightweight, compact, and cost-effective materials. One promising solution for achieving these characteristics is using polymer matrix ceramic-reinforced composites. In this context, complex oxide materials, specifically Zn1-xCuxWO4 (where x=0 and x=0.03), were used to reinforce three different polymer matrices: epoxy, polyurethane, and silicone rubber. The primary objective was to create composites with low loss factors and high dielectric constants, essential qualities for telecommunications systems. To create the complex oxides, the solid-state reaction method was employed. In particular, the X-ray diffraction (XRD) analysis confirmed that Zn0.97Cu0.03WO4 exhibited a monoclinic …

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Experimental And Optimization Study Of Powder Metallurgy Process Parameters Of Magnesium Base Az31 Alloy Using Taguchi Method, Basma Sultan, Muna Abbass, Jawdat Yagoob, Yang Guo Mar 2026

Experimental And Optimization Study Of Powder Metallurgy Process Parameters Of Magnesium Base Az31 Alloy Using Taguchi Method, Basma Sultan, Muna Abbass, Jawdat Yagoob, Yang Guo

Engineering and Technology Journal

Powder metallurgy (PM) is a highly effective re-processing method mostly used for magnesium-base alloys, especially in high-performance Mg alloys. In the present work, the experimental and optimization of PM process parameters, including compaction pressure, sintering temperature, and sintering time, for AZ31 magnesium alloy have been investigated using Taguchi Design of Experiment (DOE) and ANOVA method. The regression equation for obtaining density, porosity, and hardness of AZ31 Mg alloy has been formulated and experimentally validated. Three parameters are dependent in the current work, 450, 550, and 600 MPa compaction pressure, 455, 520, and 585ºC sintering temperature, and 30, 60, and 90 …

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Design And Manufacturing Of Custom 3d Printed Bone Implants, Zaineb Neamah, Luma Al-Kindi, Ghassan Al-Kindi Mar 2026

Design And Manufacturing Of Custom 3d Printed Bone Implants, Zaineb Neamah, Luma Al-Kindi, Ghassan Al-Kindi

Engineering and Technology Journal

In medical surgery, a customized implant is often required to meet surgical requirements, especially in cases with complicated or traumatic deformities. The emerging techniques of additive manufacturing, e.g., 3D printing, may help provide a quick response to such needs, provided that a valid approach capturing required implant shape data is generated and processed to better suit 3D printing. Different materials, including biocompatible polymer and metal, may suit medical-surgical applications. In this paper, an investigation is conducted to assess 3D printing technology use as part of a full system, from capturing implant shape data to producing the customized implant. The investigation …

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Antibacterial Improvement With Multilayer Of Bio-Composite Coatings Produced By Electrophoretic Deposition, Noor Al-Ali, Makarim Abdulkareem, Iman Anoon Mar 2026

Antibacterial Improvement With Multilayer Of Bio-Composite Coatings Produced By Electrophoretic Deposition, Noor Al-Ali, Makarim Abdulkareem, Iman Anoon

Engineering and Technology Journal

In this study, multi-structured coatings of biocompatible and antibacterial materials on a 316L stainless steel (SS) implant have been electrophoretically deposited for orthopedic applications. Two layers of composite coatings have been deposited; the first layer of composite coating biopolymer layer consists of (chitosan with Gelatin) and the second composite coating layer of bio-ceramic comprises Hydroxyapatite with chitosan. The first layer was deposited at (3 g/L concentration of Gelatin, 20 voltage, and 3 min and 0.5 g/L chitosan) parameters, and the second layer was deposited at (6 g/L, 40 voltage, 1 min, and 0.5 g/L chitosan) parameters. In this study, the …

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Cold Sintering Process Of Hydroxyapatite Derived From Natural Bone And Co-Precipitation Method: A Comparative Study, Hawraa Abbas, Hanaa Smeig, Zuhair Abdul Ameer Mar 2026

Cold Sintering Process Of Hydroxyapatite Derived From Natural Bone And Co-Precipitation Method: A Comparative Study, Hawraa Abbas, Hanaa Smeig, Zuhair Abdul Ameer

Engineering and Technology Journal

This study uses a novel sintering technique at very low temperatures (below 300°C) named the Cold Sintering Process to produce highly dense Hydroxyapatite (HA) samples. Nano hydroxyapatite was prepared using two different methods: Synthesis by chemical precipitation method (HA1) and natural source from Boven bone (HA2). The samples are characterized using scanning electron microscope (SEM), X-ray energy dispersive spectrometry (EDS), X-ray diffractogram (XRD), transition electron microscope (TEM), Fourier transform infrared spectrometry (FTIR) and Nuclear magnetic resonance spectroscopy (NMR). Also, physical and mechanical properties measurements were detected, including density and hardness. The results indicated that cold sintering could result in Hydroxyapatite …

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Experimental And Multi-Optimization Investigation Of Machining (X210) Alloy Steel Using Angled Edm Electrodes, Ahmed Abbas, Ali Khleif Mar 2026

Experimental And Multi-Optimization Investigation Of Machining (X210) Alloy Steel Using Angled Edm Electrodes, Ahmed Abbas, Ali Khleif

Engineering and Technology Journal

Electrical Discharging Machining (EDM) offers broad capabilities that allow it to be used in the manufacturing, automotive, and aviation industries, as well as practically all disciplines of conductive material machining. This experimental and numerical work aims to use EDM to evaluate the surface of Alloy Steel (X210). The experiments used the EDM copper electrode with a novel horizontal flushing hole. The findings of the investigations have been analyzed so that the best settings for the input process factors can be determined. Alloy tool steel (X210) is cut in dimensions by the Wire EDM (dk7740) (15 × 15 × 10 mm) …

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Dynamic Displacement Of Sheet Pile Walls Adjacent To The Railway Track, Kather Naji, Mohammed Al-Neami, Mahmood Mahmood Mar 2026

Dynamic Displacement Of Sheet Pile Walls Adjacent To The Railway Track, Kather Naji, Mohammed Al-Neami, Mahmood Mahmood

Engineering and Technology Journal

Due to the scarcity of experimental laboratory research on the effect of repetitive stress resulting from the railway on retaining walls, this study presents an investigation of an experimental laboratory model to study the effect of repetitive loads resulting from the railway on the adjacent retaining wall through several factors. The results of an experimental investigation of horizontal displacements of steel sheet pile walls behind excavations in the sand adjacent to railway tracks are presented. A series of model tests have been carried out in which the effect of sand density, horizontal distance between the railway and the sheet wall, …

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Comparison Of Locally Manufactured Composite Tile Adhesive Using Waste Material With Imported Tile Adhesive, Samer Turki, Sarmad Ibrahim, Mohammed Al Maamori Mar 2026

Comparison Of Locally Manufactured Composite Tile Adhesive Using Waste Material With Imported Tile Adhesive, Samer Turki, Sarmad Ibrahim, Mohammed Al Maamori

Engineering and Technology Journal

One of the most important construction activities worldwide is the construction using autoclaved aerated concrete units at the global level is increasing significantly and the use of these units leads to the consumption of large amounts of resources and causes large residues waste, which leads to great damage to the environment and significant economic losses for companies and people. In recent periods, a noticeable increase has been observed in the manufacture of building units in Iraq. Iraqi factories have been affected by the waste resulting from manufacturing processes. The main objective of the study is to utilize tons of waste …

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Performance Of Potato Starch Admixture On Fresh And Hardened Behaviours Of Concrete At Varied Mix Design Ratios, Chidobere Nwa-David Mar 2026

Performance Of Potato Starch Admixture On Fresh And Hardened Behaviours Of Concrete At Varied Mix Design Ratios, Chidobere Nwa-David

Engineering and Technology Journal

The urgency to attenuate techno-economic and ecological threats constituted by chemical admixtures has necessitated the adoption of feasible natural admixtures. The chemical interaction of admixtures with concrete ingredients affects concrete's plastic and hardened structure. The impact of concrete properties on construction works is of great concern to engineers as it plays a vital role towards viable infrastructural development. This study focused on developing an eco-friendly, sustainable structural concrete using potato starch (PS) as an admixture. PS has been included to in concrete in discrete percentages (0%, 0.4%, 0.8%, 1.2%, 1.6%, 2.0%) of cement weight employing mix ratios of 1: 1.5: …

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Drought Forecasting Model For Future Climate Change Effects In A Regional Catchment Area In Northern Iraq, Nasser Muhaisen, Thair Khayyun, Mustafa Al-Mukhtar Mar 2026

Drought Forecasting Model For Future Climate Change Effects In A Regional Catchment Area In Northern Iraq, Nasser Muhaisen, Thair Khayyun, Mustafa Al-Mukhtar

Engineering and Technology Journal

Climate change plays a crucial role in shaping the hydrological dynamics of rivers owing to its immediate implications on the driving meteorological parameters. Therefore, Understanding climate change and its implications is essential for sustainable water resource management. This study aims to assess the extent of climate change and its effects on streamflow in the Mosul Dam watershed Under three global warming Representative Concentration Pathways scenarios (i.e., 2.6, 4.5, and 8.5) based on mean climate data extracted from four Global Circulation Models (i.e., Beijing Climate Center, China, Commonwealth Scientific and Industrial Research Organization, Australia, Met Office Hadley Center, United Kingdom, and …

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Strain Capacity And Flexural Strength Behavior Of Bendable Concrete Produced With Different Polymeric Fibers, Ikram Al-Mulla, Tareq Al-Attar, Abbas Al-Ameeri, Ammar Al-Rihimy Mar 2026

Strain Capacity And Flexural Strength Behavior Of Bendable Concrete Produced With Different Polymeric Fibers, Ikram Al-Mulla, Tareq Al-Attar, Abbas Al-Ameeri, Ammar Al-Rihimy

Engineering and Technology Journal

The incorporation of fibers into engineered cementitious composite concrete imparts flexibility to the material. Therefore, using different types and contents of polymeric fibers would affect the behavior of such concrete types, and it is worth contemplating. The present research aims to study the flexural strength and the strain capacity of engineered cementitious composite concrete produced with polyvinyl alcohol fibers (PVA) and polypropylene fibers (PP) with different volume fractions (1%, 1.5%, and 2%). Six mixes of engineered cementitious composite concrete of three grades of strengths, 30, 45, and 60 MPa, were produced. Results revealed that mixes of 60 MPa with 2% …

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Manufacturing Of Sustainable Ultra-High-Performance Concrete Using Response Surface Methods, Abbas Mohammed, Maan Hassan, Hussein Al-Quraishi Mar 2026

Manufacturing Of Sustainable Ultra-High-Performance Concrete Using Response Surface Methods, Abbas Mohammed, Maan Hassan, Hussein Al-Quraishi

Engineering and Technology Journal

Quartz powder is used in ultra-high-performance concrete to improve granular packing, but repeated inhalation during manufacture can cause health issues. The mechanical properties of UHPC are influenced by the post-setting curing method. A hypothesis suggests limestone powder could be a viable filler to mitigate these issues under three different curing regimes, replacing quartz powder of similar size. The study assessed 18 mixtures with different w/b ratios for flow characteristics and compressive strength after 7 and 28 days of curing under various conditions. Limestone powder positively impacted compressive strength and had fresh properties. A two-factor interaction model accurately correlated variables and …

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Modifying The Strength Of Soft Soils Via Heating And Cement Grouting Method, Ali Shareef, Mohammed Al- Neami, Falah Rahil Mar 2026

Modifying The Strength Of Soft Soils Via Heating And Cement Grouting Method, Ali Shareef, Mohammed Al- Neami, Falah Rahil

Engineering and Technology Journal

Soft clayey soils present geotechnical engineering challenges with significant stability and settlement. Various methods are employed to enhance the geotechnical properties of these soils. Heating and grouting are the methods used to improve such soil. A new heating and cement grouting system using gas as a source of heating through boreholes and Portland cement for grouting was designed and manufactured to enhance the soft soil. Different parameters were investigated, including the shear strength and the angle of internal friction, as well as the water/cement ratio, W/C (0.5, 0.75, 1, 1.25, 1.5, and 1.75), and the period of curing (3, 14, …

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Solving Westergaard Half-Space Problems Using Potential Theory, Charles Ike Mar 2026

Solving Westergaard Half-Space Problems Using Potential Theory, Charles Ike

Engineering and Technology Journal

The Westergaard half-space problem has been solved using the potential theory in this work. It is a classical theme in elasticity theory that seeks to find the displacements and stresses in the half-space caused by known boundary loads. It has important applications in analyzing stresses and displacement fields in soil due to applied points and distributed loads on the boundary caused by structures placed on the soil. It is governed by stress–strain, strain-displacement, and equilibrium equations. Horizontal inextensibility is assumed in developing the problem, simplifying the displacement formulation to a three-dimensional (3D) Laplace equation. The potential theory is applied to …

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Recycling Of Waste Papers: Yield And Quality Of The Ash-Derived Materials, Ubong Robert, Sunday Etuk, Okechukwu Agbasi, Prosperity Ambrose, Rowland Adewumi Mar 2026

Recycling Of Waste Papers: Yield And Quality Of The Ash-Derived Materials, Ubong Robert, Sunday Etuk, Okechukwu Agbasi, Prosperity Ambrose, Rowland Adewumi

Engineering and Technology Journal

This research was designed to assess the yield and quality of ash prepared from different types of waste papers. Waste newspapers, writing papers, and cartons were selected for combustion to obtain the ashes and coded as WNPA, WWPA, and WCPA, respectively. The waste papers were incinerated simultaneously in separate but identical incinerators at 850 ℃. An experiment on the yield of the ashes was performed on two days before the ashes obtained were mixed based on the type of waste papers from which they were derived. The results showed that irrespective of the day and time, the WCPA was the …

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Effect Of The Stochastic Weibull Parameters On The Reliability Of The Dialysis Machine, Sofiene Fenina, Souheyl Jendoubi, Faker Bouchoucha Mar 2026

Effect Of The Stochastic Weibull Parameters On The Reliability Of The Dialysis Machine, Sofiene Fenina, Souheyl Jendoubi, Faker Bouchoucha

Engineering and Technology Journal

Dialysis machines operate in an uncertain environment with several sources of disturbances; therefore, it is necessary to take account of the uncertainties during all their life phases. This paper presents a study of the random reliability of the dialysis machine in a stochastic environment through the two-parameter for Weibull distribution. The shape and scale parameters were estimated through analytical and graphical methods based on the failure history of the devices. The formulation of the analytical methods and their exploitation using numerical simulations was one of the objectives of this work. The uncertainties in the stochastic environment of the machines are …

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Influence Of Oil Palm Mesocarp Fiber On Physical Properties Of Fabricated Plaster Of Paris Ceilings, Armstrong Anonaba, Francis Eze, Israel Ndukwe Mar 2026

Influence Of Oil Palm Mesocarp Fiber On Physical Properties Of Fabricated Plaster Of Paris Ceilings, Armstrong Anonaba, Francis Eze, Israel Ndukwe

Engineering and Technology Journal

This study was designed to investigate how some important physical properties of Plaster of Paris (POP) ceilings are affected by the utilization of untreated oil palm mesocarp fiber (UOPMF) and treated oil palm mesocarp fiber (TOPMF) as a modifier. Both fibers were utilized separately at various weight proportions (0, 10, 20, 30, and 40%) to fabricate the ceiling samples. The samples were dried completely and then tested for water absorption, porosity, bulk density, thermal conductivity, specific heat capacity, thermal diffusivity, heat flow time, and flakiness. All the samples could improve thermal insulation performance better than conventional ceilings like asbestos and …

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Assessment Of Properties Of Composite Boards From Groundnut Shells And Sawdust For Their Suitability For Structural Applications, Ekong Nathaniel, Nsikak Ekpenyong, Casmir Zanders Akaolisa, Okwet Yawo, Grace Umoren, Samuel Akpan Mar 2026

Assessment Of Properties Of Composite Boards From Groundnut Shells And Sawdust For Their Suitability For Structural Applications, Ekong Nathaniel, Nsikak Ekpenyong, Casmir Zanders Akaolisa, Okwet Yawo, Grace Umoren, Samuel Akpan

Engineering and Technology Journal

Groundnut shells and sawdust are generated in vast quantities yearly but under-utilized. In developing countries, this situation leads to their disposal by unplanned landfilling, indiscriminate dumping, or open burning as ineffective solid waste management systems persist. Such practices constitute severe environmental problems that need to be urgently tackled. In this work, composite boards were fabricated from groundnut shell particles (GSP) and sawdust particles (SDP) at varying volumetric proportions of 0%, 25%, 50%, 75%, and 100 % using Topbond as a binding agent. The boards were dried completely and then assessed for water absorption, bulk density, thermal conductivity, specific heat capacity, …

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An Empirical Investigation And Computational Modeling Of Volatile Organic Compound (Vocs) Elimination From Aqueous Solutions By Means Of Pervaporation, Salam Rasheed, Salah Ibrahim, Asmaa Abbas, Raed Al-Jaboori, Zeinab Jawad, Low Chun, Qusay Alsalhy Mar 2026

An Empirical Investigation And Computational Modeling Of Volatile Organic Compound (Vocs) Elimination From Aqueous Solutions By Means Of Pervaporation, Salam Rasheed, Salah Ibrahim, Asmaa Abbas, Raed Al-Jaboori, Zeinab Jawad, Low Chun, Qusay Alsalhy

Engineering and Technology Journal

The present study harnessed a commercially available polydimethylsiloxane (PDMSTM4060) membrane designed for the selective separation of soluble benzene (C6H6) and toluene (C7H8) compounds from an aqueous solution employing pervaporation (PV). Two distinct mathematical models, namely the universal quasi-chemical (UNIQUAC) model and the conventional driving force model, were formulated to replicate the intricate transport mechanisms of both organic solvent and water across these membranes. These models were instrumental in projecting the membrane's performance across diverse operational scenarios. The anticipated results were rigorously compared with experimental data to validate the projected outcomes for non-ideal volatile organic compounds (VOCs)-water systems within the membrane. …

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Carbon Fiber Cloth Performance Improvement Via Hybrid Materials (Fe2o3, Feco2o4, And Conducting Polymer) Addition For Energy Storage Applications, Abeer Radhi, Sami Jafar Al-Rubaiey, Shaymaa Al-Rubaye Mar 2026

Carbon Fiber Cloth Performance Improvement Via Hybrid Materials (Fe2o3, Feco2o4, And Conducting Polymer) Addition For Energy Storage Applications, Abeer Radhi, Sami Jafar Al-Rubaiey, Shaymaa Al-Rubaye

Engineering and Technology Journal

Carbon fiber cloths (CFCs) are essential materials extensively studied and utilized in numerous applications, including supercapacitors (SCs), batteries, solar cells, and catalysis. CFC is gaining significant research attention as an inexpensive choice for (SC) electrode materials, mainly owing to its peculiar adaptability, which makes it suitable for conveyable or flexible devices. In fact, this characteristic is not easily attainable with other carbon-based matrices. However, bare CFC electrodes face difficulties concerning their capacitive performance because of numerous factors, including markedly little surface space, poor electrochemical efficacy, and limited porousness. In this way, these factors reduce their efficiency as supercapacitor electrodes. To …

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A Review On Alginate-Nanoparticle As A Potential Tool For Managing Water Pollution, D. Lakshmi, K. Radha, Thahira Azeez, Shanmugam Munisamy Mar 2026

A Review On Alginate-Nanoparticle As A Potential Tool For Managing Water Pollution, D. Lakshmi, K. Radha, Thahira Azeez, Shanmugam Munisamy

Engineering and Technology Journal

Sustainable source-based hydrogels are now paid much importance for managing water pollution due to their distinctive chemical and physical properties like hydrophilicity, biocompatibility, viscoelasticity, superabsorbancy, softness, fluffiness, and biodegradability. Alginate-based hydrogels can incorporate much water due to their hydrophilic nature.Water pollution often changes groundwater, resulting in the inability to use it. Alginate-based gels remove pollutants through adsorption/desorption, transport, and other conventional techniques. Alginate-based hydrogels can incorporate much water due to their hydrophilic nature. Their composites have been demonstrated to control different water pollutants like inorganic, organic, and pathogenic microbes from various water streams in unique structural forms like a flat …

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Image Encryption Based On S-Box And 3d-Chaotic Maps And Secure Image Transmission Through Ofdm In Rayleigh Fading Channel, Jenan Namuq, Fadhil Hasan, Alaa Ali Mar 2026

Image Encryption Based On S-Box And 3d-Chaotic Maps And Secure Image Transmission Through Ofdm In Rayleigh Fading Channel, Jenan Namuq, Fadhil Hasan, Alaa Ali

Engineering and Technology Journal

Data security is vital if transferred over a wireless network or stored on a personal computer. The essential properties of chaos, such as initial state sensitivity and unpredictability, make it a crucial candidate for encryption applications. This paper proposes a 3D chaotic map and a cascaded S-Box that can be combined to get a high-efficiency and complex cryptographic algorithm. The first stage is ciphering using a 3D cat map, the second stage is an S-box based on a 3D Henon map, and the third stage is another ciphering stage using a 3D Henon map. This study combines various encryption techniques, …

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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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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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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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