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Optical Characterizations Of Rf-Magnetron Sputtered Nanocrystalline Tio2 Thin Film, Azhar Sadkhan Aug 2026

Optical Characterizations Of Rf-Magnetron Sputtered Nanocrystalline Tio2 Thin Film, Azhar Sadkhan

Engineering and Technology Journal

TiO2 nanocrystalline thin films are widely used as antireflection coatingin solar cell, in this paper, RF magnetron sputtering technique is used to prepareTiO2 thin film on glass substrates, TiO2 thin films deposited under differentpowers (75,100,125 and 150) Watt for (1.5) hour resulted in different layerthickness (62.5,88,118 and 132.6) nm respectively. The optical propertiesexamined by UV-VIS spectroscopy. TiO2 thin films exhibit a high transparency inthe region from about 350 nm above, we suggest that these results indicate themost suitable growing conditions for obtaining high quality sputtered TiO2 thinfilms with higher transparence performance for solar cell application. the opticalabsorbance coefficient for all …

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Levels Of Lead And Chromium Ions In Different Brands Of Lipstick Sold At Local Markets In Iraq, Shaymaa Khazaal, Khalida Al-Azawi, Hamsa Eessa, Abdulnasser Al-Gebori Al-Gebori, Hasan Obayes, Abeer Khasraghi Aug 2026

Levels Of Lead And Chromium Ions In Different Brands Of Lipstick Sold At Local Markets In Iraq, Shaymaa Khazaal, Khalida Al-Azawi, Hamsa Eessa, Abdulnasser Al-Gebori Al-Gebori, Hasan Obayes, Abeer Khasraghi

Engineering and Technology Journal

Lead and Chromium ion samples of five commercial samplesof each of twenty brands of lipstick sold at locally markets in Iraq weredetermined by atomic absorption spectrophotometer. Samples ofdigested Lipstick were used, acid digestion method using acids HCl:HNO3 in ratio 1:3 were used before analysis. Average for analyzedsamples were Pb, 0.10-4.85 ppm; Cr, 0.18-5.2 ppm. Samples No.9 andNo.4 showed the least concentrations of Pb and Cr respectively. Thesevalues are not expected to be toxic to humans. However, exposure overlong periods might cause accumulation of the elements in the body andeven at low concentration; some metals could initiate allergic reactions.

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Hydraulic Parameters Of Groundwater Aquifers In Khan-Al-Baghdadi Area, Hussein Al-Sudani Aug 2026

Hydraulic Parameters Of Groundwater Aquifers In Khan-Al-Baghdadi Area, Hussein Al-Sudani

Engineering and Technology Journal

The mainly objective of groundwater studies is assessment the physicalcharacterizations of water-bearing layers. Conducting and analyzing aquifertests is one of the most efficient ways to assessment these characterizations. Theaim of this research is to carry out hydrogeological investigation in Khan Al-Baghdadi area within Anbar Governorate in the west of Iraq to evaluatehydraulic properties of the most important groundwater aquifers in order toachieve optimum use of groundwater in term of sustainable water management byusing Cooper-Jacob and Theis Recovery Test methods to calculate transmissivityand storage coefficient after field investigation of aquifers extended in the areawhere geographical position, elevations, static water levels, depths, …

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The Growth Characteristics Of Rf-Magnetron Sputtered Nanocrystalline Tio2 Thin Films, Azhar Sadkhan, Suaad Mohammed, Mohammed Khalaf Aug 2026

The Growth Characteristics Of Rf-Magnetron Sputtered Nanocrystalline Tio2 Thin Films, Azhar Sadkhan, Suaad Mohammed, Mohammed Khalaf

Engineering and Technology Journal

In this paper, RF Magnetron sputtered TiO2 thin films deposited onglass slices at various powers (75,100,125 and 150) Watt for (1.5) hour anddifferent thickness (62.5-88-118 and 132.6) nm, the TiO2 thin films annealed with400°C for 2 hour and the morphology and structure of these films are describedby X-ray diffraction XRD and atomic force microscopy AFM to show the phasestructure. X-ray diffraction investigation uncovered that the crystalline size of theTiO2 thin films displays an expanding pattern with increasing the sputteringpower. The preferred orientation of (101) was watched for the films depositedwith sputtering power of (75,100,125 and 150) Watt.

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Easy And New Chemical Synthesis Of Stable Nano Sliver Using Propylene Glycol And Glycerin As Reducing Agents, Abdulah Mohammed, Sarab Mahmood Aug 2026

Easy And New Chemical Synthesis Of Stable Nano Sliver Using Propylene Glycol And Glycerin As Reducing Agents, Abdulah Mohammed, Sarab Mahmood

Engineering and Technology Journal

In this present work we have synthesized stable silvernanoparticles (Ag-NPs) by chemical reduction with aqueous solutions ofsilver nitrate (i) propylene glycol (ii) glycerin as reducing agents and guargum as a stabilizer. The reaction were done at room temperature and atpH=8. Systematic characterizations of the Ag-NPs were done using UV-Vis,zeta potential analysis, X-Ray diffraction (XRD), AFM and SEM whichreveal stable Ag-NPs. These measurements indicate that the particles aremostly spherical in shape. The UV-Vis spectra of the result solution of Ag-NPs show an absorption peak at 412 nm and 424 nm for using propyleneglycol and for using glycerin respectively. These color occurring …

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Studying The Effect Of Annealing Temperature On Some Physical Properties Of In2o3 Thin Films, Duaa Mohammed, Muslim Jawad Aug 2026

Studying The Effect Of Annealing Temperature On Some Physical Properties Of In2o3 Thin Films, Duaa Mohammed, Muslim Jawad

Engineering and Technology Journal

In this study, In2O3 thin films were deposited on quartz substrates bypulsed laser deposition technique at room temperature and followed bythermally annealing at 300℃, 400℃ and 500℃ for 1 hour. The optical bandgap was found to increase with the annealing temperature from 3.5 to 3.85 eVand the transmittance was observed above 90%. XRD results show that the filmsare polycrystalline in nature and crystallizes with preferred orientation (222).SEM images show that the films are

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The Influence Of Immersion In Different Chemical Solutions On The Mechanical And Physical Properties Of (Epoxy/Styrene-Butadiene Rubber) Blend Reinforced With Nano Copper Oxide, Rana Salih Aug 2026

The Influence Of Immersion In Different Chemical Solutions On The Mechanical And Physical Properties Of (Epoxy/Styrene-Butadiene Rubber) Blend Reinforced With Nano Copper Oxide, Rana Salih

Engineering and Technology Journal

The aim of this work was to evaluate some mechanical and physicalproperties of a composite material which consists of (epoxy/styrene-butadienerubber) blend as a matrix, reinforced with copper oxide (CuO) with a weightfraction 3%, and the composite material was manufactured by hand lay-up.The optimum mixing ratio was (75:25) % of epoxy and (SBR) was chosen toaccomplish the work due to its highest impact strength (2.1KJ/m2). The teststhat were performed on the material were: tensile test, impact test, thermalconductivity test, and the absorption test, in addition to the microscopicimaging using scanning electron microscope (SEM), to determine the surfacemorphology of the specimens. Sodium …

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Influence Of Spirals On The Behavior Of Short Rc Columns Strengthened By External Cfrp, Kaiss Sarsam, Raid Khalel, Mohammed Hadi Aug 2026

Influence Of Spirals On The Behavior Of Short Rc Columns Strengthened By External Cfrp, Kaiss Sarsam, Raid Khalel, Mohammed Hadi

Engineering and Technology Journal

An experimental study was carried out to investigate the behavior of normal strength reinforced concrete (RC) circular short columns strengthened by carbon fiber reinforced polymer (CFRP) sheets. Three series comprising total of (15) specimens were loaded to failure under axial concentric compression load. Strengthening was varied by changing CFRP strips number, spacing and wrapping methods. The finding of this research can be summarized as follows; for the columns without CFRP, the influence of the spiral pitch was significant: compared with 100 mm spiral pitch, dropping the spacing to 65 mm and 30 mm increased the load carrying capacity by 25% …

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Corrosion Inhibition Of Mild Steel In Hydrochloric Acid Solution By An Isatin-Aniline Compound, Khalida Al-Azawi Aug 2026

Corrosion Inhibition Of Mild Steel In Hydrochloric Acid Solution By An Isatin-Aniline Compound, Khalida Al-Azawi

Engineering and Technology Journal

Recently the researchers go to the eco-friendly corrosion inhibitors.In the present investigation, isatin which found in many plants, Isatis tinctoria,Calanthe discolor and Couroupita guianensis has been used as corrosioninhibitor. An isatin-aniline compound, namely ethyl 4-amino-N-(3-isatinyl)benzoate (AIB), was successfully synthesized in high yield and its inhibitionimpact on corrosion of MS (mild steel) in hydrochloric acid as corrosivesolution was examined via weight loss and Scanning electron microscopetechniques. The results acquired appeared that AIB has employ perfect as acorrosion inhibitor at low concentrations towards mild steel in HCl bath. Theimpact of temperature on the corrosion behavior of MS in corrosive bath withpresence of …

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Frequency Reconfigurable Monopole Antenna Using Switchable Slotted Triangular Radiators, Fayyadh Ahmed, Bayez Al-Sulaifanie Aug 2026

Frequency Reconfigurable Monopole Antenna Using Switchable Slotted Triangular Radiators, Fayyadh Ahmed, Bayez Al-Sulaifanie

Engineering and Technology Journal

A new configuration of multi-state switchable wideband /multi-narrowband is demonstrated. The proposed antenna is based on a printed rectangular monopole antenna (PRMA) that covers wideband 3.3 GHz WiMAX frequency range. To generate a multi-state switchable antenna, center part of PRMA has been removed without distorting the PRMA behavior. Three PIN diode switches are used to control different operating modes. Eight-operating modes, 2n modes (n is number of switches) are achieved by setting the switches ON or OFF. Initial results were obtained by using short and open circuits instead of implanting PIN diode. The merit of the antenna design is that …

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Relationships Between Actual Compressive Strength, Modulus Of Elasticity And Non-Destructive Tests Of High Strength Concrete, Jasim Abd Aug 2026

Relationships Between Actual Compressive Strength, Modulus Of Elasticity And Non-Destructive Tests Of High Strength Concrete, Jasim Abd

Engineering and Technology Journal

The present research investigate with Nondestructive testing (NDT) of high strength concrete (HSC). An experiential work was carried out including both destructive and nondestructive test methods utilized to various concrete mixes with compressive strength ranged from 44 to 84.4MPa.Correlation curves were derived as pulse velocity and modulus of elasticity vs. compressive strength for high strength concrete. Two empirical relations were proposed for foretelling the modulus of elasticity Ec = 0.4141f`c + 8.6077, and compressive strengths fcu = 320.85ln (V) – 467.73 with a good coefficient of determination R2 for these equations 0.94and 0.90 respectively. Obtained from cubic and cylinders using …

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Workability Of Hybrid Fiber Reinforced Self-Compacting Concrete, Tareq Al-Attar, Samer Daoud, Anmar Dhaher Aug 2026

Workability Of Hybrid Fiber Reinforced Self-Compacting Concrete, Tareq Al-Attar, Samer Daoud, Anmar Dhaher

Engineering and Technology Journal

The aim of this work is to evaluate the effect of adding different types of fibers on the fresh properties of the self-compacting concrete, SCC. The used types of fibers were steel (with volume ratios of 0.75, 1.0 and 1.25 %) and polypropylene fibers (0.10 and 0.15 %) and a hybrid system of these fibers (0.65 % steel and 0.10 % polypropylene). The conducted tests in the fresh state were slump flow, T500, V-funnel and L-box. It was noticed that increasing the volume fraction of fibers would lead to decrease in the workability of SCC. According to EFNARC requirements for …

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Preparation, Characterization And Utilization Of Polyacrylamid-Kaolin Composite In The Removal Of Nickel Ions From Water, Mahmood Barbooti, Raghad Hilal, Balkees Al-Dabbagh Aug 2026

Preparation, Characterization And Utilization Of Polyacrylamid-Kaolin Composite In The Removal Of Nickel Ions From Water, Mahmood Barbooti, Raghad Hilal, Balkees Al-Dabbagh

Engineering and Technology Journal

A composite material of polymeric matrix Polyacrylamid (PAM) that is reinforced by a certified clay mineral of the Iraqi kaolinite at several weight ratios (10, 20, 30, 40 and 50%) was prepared by mixing the polymer water solution with the clay followed by hand molding method. Some of the mechanical properties of the prepared composite such as tensile strength, impact and hardness Shore A were studied to improve the mechanical capability to be as a sorbent for the removal of heavy metals from water.The results showed an improvement in the mechanical properties as the kaolin content was increased. The powdered …

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Analytical Characterization And Antimicrobial Activity Of Bismuth Nanoparticles Synthesized Using Laser Ablation Technique, Abdul Hadi Judran Aug 2026

Analytical Characterization And Antimicrobial Activity Of Bismuth Nanoparticles Synthesized Using Laser Ablation Technique, Abdul Hadi Judran

Engineering and Technology Journal

Bismuth nanoparticles were synthesized using laser ablation technique by focusing solid bismuth target in distilled deionized water by 1064 nm and 532 nm laser radiations generated by Q-switched pulsed Nd:YAG laser, respectively. Synthesized nanoparticles were characterized using UV–Vis spectrophotometer, X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), and Atomic Force Microscopy (AFM). The XRD pattern of the synthesized sample was indexed as. UV–Vis spectrophotometer indicated that the peak of absorption spectra of bismuth nanoparticles located in UV-region (230 nm) and increased towards IR region with increase laser energy and laser wavelength. SEM and TEM exhibited spherical shape …

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Ultrasonic Technique In Treating Wastewater By Electrocoagulation, Najem Al-Rubaiey, Mohammed Al-Barazanjy Aug 2026

Ultrasonic Technique In Treating Wastewater By Electrocoagulation, Najem Al-Rubaiey, Mohammed Al-Barazanjy

Engineering and Technology Journal

Electrocoagulation Treatment can be considered as a favorable tool for the removal of many pollutants of various forms of wastewater. These pollutants may include the removal of colloidal, the breaking-up of emulsions and heavy metals. This process consists of the disintegration of the anodes (usually iron or aluminum), exciting the creation of coagulant mixtures in wastewater. That will aid to coagulate contaminants and generate bubbles in favor of mixing and elimination of solids suspension by flotation. Recently, the arrangement of using this technique with other treatment tools has turned out to be an interesting subject leading to an improvement in …

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Potential Of Ethylhexyl Ester Oil To Enhance Drilling Of Hthp Wellbores, Lina Jassim, Robiah Yunus, Suraya Abdul Rashid, Amar Salleh Salleh Aug 2026

Potential Of Ethylhexyl Ester Oil To Enhance Drilling Of Hthp Wellbores, Lina Jassim, Robiah Yunus, Suraya Abdul Rashid, Amar Salleh Salleh

Engineering and Technology Journal

Ester-based drilling fluids have been accepted as an alternative to mineral oils in drilling applications and currently being utilized to drill oil or gas wells around the world. However, the ester-based fluids have deficiencies that limit its ability to carry and transfer drilled solids, stabilize the wellbore and drill the extended reach wells. Several approaches have been considered to overcome the ester limitations. Thus, the main aim of this study is to overcome these limitations by developing the high performance ester-based green drilling fluids for deep and ultra-deep wells. The low-pressure technology was applied in the synthesis of the ester …

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The Role And Important Of Internet Of Things In Building Sustainable City, Nahla Alwan, Muna Al-Nuaimi Aug 2026

The Role And Important Of Internet Of Things In Building Sustainable City, Nahla Alwan, Muna Al-Nuaimi

Engineering and Technology Journal

Every year many people migrate from country to city to live there. This will load a big pressure on the whole living in the city, Baghdad city also suffer from this problem in addition to other found problems like energy consumption , waste accumulate , Traffic congestion, noise, environmental pollution. To offer a good sustainable future living to population without any damage to environment and to solve many problems , one can use internet of things which is the connection network of the things especially with high spread of networks now which Internet of things based on it .the purpose …

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Green Synthesis, Characterization And Antimicrobial Activity Of Titanium Dioxide Nanoparticles Using Laser Ablation Technique, Azhar Haleem, Ruaa Abbas, Abdulhadi Kadhim Aug 2026

Green Synthesis, Characterization And Antimicrobial Activity Of Titanium Dioxide Nanoparticles Using Laser Ablation Technique, Azhar Haleem, Ruaa Abbas, Abdulhadi Kadhim

Engineering and Technology Journal

Titanium dioxide nanaoparticles (TiO2 NPs) were prepared using laser ablation technique by ablation of titanium target immersed in distilled de-ionized water (DDW) by Q-switched pulsed Nd:YAG laser of 1064 nm, 1 Hz, (490) mJ and 700 pulse. UV-visible spectrophotometer and Transmission Electron Microscopy (TEM) were used to characterize the optical and morphological properties of prepared nanoparticles, respectively. The absorption spectrum of TiO2 NPs was at ultraviolet-region (214 nm) due to Surface Plasmon Resonance (SPR), and the particles size distribution of the prepared nanoparticles ranged from 30 to 100 nm. The antifungal activity ofTiOR2R NPs was carried out against Microsporum canis. …

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Studying The Effect Of Ambient Temperature On Wastewater Degradation In Simulated Self-Purification Aerated Sewer System, Tala Al-Khateeb, Riyad Al-Anbari, Kareem Al-Jumaili Aug 2026

Studying The Effect Of Ambient Temperature On Wastewater Degradation In Simulated Self-Purification Aerated Sewer System, Tala Al-Khateeb, Riyad Al-Anbari, Kareem Al-Jumaili

Engineering and Technology Journal

Designing and operating a simulated gravity sewer system had been accomplished in the current research. The design had been provided with aeration system in order to deliver oxygen to microorganisms presented in sewage water. The system had been used in three different seasons in order to investigate the ambient temperature effect on treating wastewater. The results revealed that ambient temperature had a significant role in organic waste degradation powered by the presence of air into sewage pipes and level tanks. Maximum degradation measured in terms of chemical oxygen demand removal (RCOD) was recorded to be 14.28 under 30 OC ambient …

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Potential Of Alfalfa For Use In Phytoremediation Of Soil Polluted With Total Petroleum Hydrocarbons, Abdul Hameed Al-Obaidy, Riyad Al-Anbari, Sara Hassan Aug 2026

Potential Of Alfalfa For Use In Phytoremediation Of Soil Polluted With Total Petroleum Hydrocarbons, Abdul Hameed Al-Obaidy, Riyad Al-Anbari, Sara Hassan

Engineering and Technology Journal

Remediation technology is a promising technique decrease pollutant like hydrocarbons from the environment. An experimental work was made at green house of University of Technology in order to study the effect of crude oil on the vegetate growth and to measure the decrement which happened on shoot height, germination rate and the reduction of total petroleum hydrocarbon (TPH), which result, by this phytoremediation technique. The samples of soil were measured for TPH reduction and removal by Horiba model (oil content analyzer) OCMA–350. Five doses were used in this experiment (0 control, 10x103, 30 x103, 50 x103, 75 x103) (mg crude …

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Effect Of Laser Pulses On Characterization Of Zincoxide Thin Film Prepared By Pld, Suaad Shaker, Asma Mohammed, Majid Khalaf Aug 2026

Effect Of Laser Pulses On Characterization Of Zincoxide Thin Film Prepared By Pld, Suaad Shaker, Asma Mohammed, Majid Khalaf

Engineering and Technology Journal

In this work, ZnO thin films have been deposition using pulsed laserdeposition (PLD) method on glass and Si (111) substrates at different laserpulsed. Some properties of ZnO thin films were studied, the results of XRDexplain Zinc oxidethin films with hexagonal wurtzite structure with thicknessabout 155and 200 nm. FTIR spectrum shows the existence of Zn – O bond thatappear the texture of ZnOnanostructures. The root mean square of thin filmswere explained with the range 8.31–15.2 nm with particle size about 41.6 -45.41and was only slightly dependent on number of laser pulses. Zinc oxide thinfilms showed transmittance of over 80% .The photovoltaic …

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Assessment Of Some Heavy Metal Concentrations In Drilling Mud Samples In Az Zubair Oil Field, Basra, Iraq, Sahar Amin, Abdul Hamid Al- Obiady, Rana Alani, Athmar Al-Mashhady Al-Mashhady Aug 2026

Assessment Of Some Heavy Metal Concentrations In Drilling Mud Samples In Az Zubair Oil Field, Basra, Iraq, Sahar Amin, Abdul Hamid Al- Obiady, Rana Alani, Athmar Al-Mashhady Al-Mashhady

Engineering and Technology Journal

Analysis of eight heavy metal concentrations (Cd, Cr, Cu, Fe, Mn,Ni, Pb and Zn) of 14 drilling mud samples collected from oil well at differentdepths which is located in AZ Zubair oil field-Basra was done in this study .The samples were measured using atomic absorption spectrophotometry.Obtained results indicated that the heavy metal concentrations range from thelowest value of 1.66mg/kg for Cd to the highest value of 1235.86mg/kg forFe. The abundance trend for the heavy metals concentration was in thedescending order of Fe, Mn, Ni, Cu, Cr, Zn, Pb, and Cd. Four parameters:Enrichment Factor (EF), Contamination Factor (CF), Geo-accumulationIndex (Igeo) and …

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Transesterification Of Castor Oil By Using Methanol And Ethanol (50/50) Mixture, Muna Khudhair, Sajeda Husain, Zahraa Jassim, Shefaa Salih Salih Aug 2026

Transesterification Of Castor Oil By Using Methanol And Ethanol (50/50) Mixture, Muna Khudhair, Sajeda Husain, Zahraa Jassim, Shefaa Salih Salih

Engineering and Technology Journal

Biodiesel is gaining considerable attention as a renewable sourceof energy, as an alternative to petroleum fuel and can be used in enginewithout modification in this paper, the profile of preparation of fatty acidmethyl ethyl ester from castor oil via a base-catalyzed transesterification wasinvestigated.. The variables chosen for the study were reaction time, oil to(methanol and ethanol) mixture ratio, and reaction temperature at constantconcentration of KOH(catalyst) .The effects of these variables on viscosity andspecific gravity were studied.

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Optical And Structural Properties Of (In2o3:Zno:Au) Nanocomposite Thin Films Prepared By Spray Pyrolysis Method, Abdul Hadi Judran, Farah Noori, Nawres Hamza Aug 2026

Optical And Structural Properties Of (In2o3:Zno:Au) Nanocomposite Thin Films Prepared By Spray Pyrolysis Method, Abdul Hadi Judran, Farah Noori, Nawres Hamza

Engineering and Technology Journal

Indium Oxide (In2O3) and Zinc Oxide (ZnO) nanoparticles weremixed carefully with gold nanoparticles, which were synthesis, by turkevichmethod. By using the method of spray pyrolysis different concentrations(5:5:0 ml, 5:4:1 ml, 5:3:2 ml, 5:2:3 ml, 5:1:4 ml and 5:0:5 ml) from thesechemical compounds were used to preformed nanocomposite thin films ofthickness of (250-300) nm. The structural properties were studied for allnanocomposite thin film samples with different concentrations. The existenceof Miller indices conforms to (211), (222), (400), (333), (440) and (622) majorlattice planes of the cubic spinel phase of In2O3 at 2θ =20.17, 33, 44.66, 50.95,59.02, 72.48 and 73.12. While secondary lattice …

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Theoretical Study Of Comparative Between The Speed Of Penetration And Cutting Using A Laser Beam, Ekhlas Mahmood Aug 2026

Theoretical Study Of Comparative Between The Speed Of Penetration And Cutting Using A Laser Beam, Ekhlas Mahmood

Engineering and Technology Journal

This research is devoted to study the effect of a laser beampower TEA-CO2 , Nd- YAG laser, and thermal properties of the materialswhen it is constant once and varying another once with the time on thepenetration and cutting speeds. It is concluded that the processes ofpenetration and cutting by using laser Nd-YAG is the best comparativewith using of laser TEA-CO2, penetration speeds when (P = P0, C = C0,and ρ = ρ0) by using laser Nd-YAG greater than penetration speeds byusing of laser TEA-CO2 by 15.5 approximately while penetration speedswhen (P = P(t), C = C0, and ρ = ρ0) …

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Effects Of Electrode Geometry On Energy Transfer Characteristics Of Electrolytic Cells Used For Production Of Metallic Nanostructures, Noor Naji Aug 2026

Effects Of Electrode Geometry On Energy Transfer Characteristics Of Electrolytic Cells Used For Production Of Metallic Nanostructures, Noor Naji

Engineering and Technology Journal

In this work, the effects of geometries of stainless steel electrodes used inelectrolytic analysis cells were studied. These cells are used for preparation ofmetallic nanostructures. These effects can be observed by studying energy transfercharacteristics of electrolytic cell as the electric field and current density aredetermined by its electrode geometry. Four electrode geometries were used in thiswork.

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Preparation And Investigation Of Flexural Strength And Impact Strength For Nano Hybrid Composite Materials Of The Tri- Polymeric Blend Used In Structural Applications, Sihama I. Salih, Wleed Salih, Mustafa Mohammed Aug 2026

Preparation And Investigation Of Flexural Strength And Impact Strength For Nano Hybrid Composite Materials Of The Tri- Polymeric Blend Used In Structural Applications, Sihama I. Salih, Wleed Salih, Mustafa Mohammed

Engineering and Technology Journal

Current work is aimed to preparation the nanocomposites laminatesof low density and good durability to use in structural applications. So, in thispaper, the preparation and compare of some mechanical properties of twogroups of tri-polymer blends composites consisting of ((93% unsaturatedpolyester resin (UP)+(5%PMMA) (Poly methyl methacrylate)+2%NR(Natural Rubber)) as the matrix materials. Added the reinforce materials(silica (SiO2) and zirconia (ZrO2) nanoparticles) individually, with differentvolume fraction of (0, 0.5, 1, 1.5%) to the ternary polymer blends accordingto the following formula:- [((100-X) (93%UP)+2%NR+5%PMMA): (X%SiO2or X% ZrO2)] The first group is composed of matrix material reinforced withzirconia (ZrO2) nanoparticles with average diameter of nanoparticles(56.88nm) and …

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Re-Use Of Glass Wool Fiber As New Composite Polyester System, Raghad Abass Aug 2026

Re-Use Of Glass Wool Fiber As New Composite Polyester System, Raghad Abass

Engineering and Technology Journal

Four different ratios of composites were prepared by varying thewool glass, at different additive weight percentages (0, 0.2, 0.4, 0.6 wt. %)in order to study the effect of glass wool reinforcement on mechanical andchemical properties of GW-reinforced polyester composites. The vacuumbagging technique was adopted for the fabrication of hybrid compositematerials. Afterword many mechanical properties as hardness, impactresistance, and compression resistance for these hybrid composites wereevaluated according ASTM Standards. The mechanical properties wereimproved as the fibers reinforcement content increased in the matrixmaterial. The chemical properties were improved as increased the weight ofglass wool. The chemical and mechanical properties have been increasedfor …

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Density And Ultrasonic Pulse Velocity Investigation Of Self-Compacting Carbon Fiber- Reinforced Concrete, G.A. Salman Aug 2026

Density And Ultrasonic Pulse Velocity Investigation Of Self-Compacting Carbon Fiber- Reinforced Concrete, G.A. Salman

Engineering and Technology Journal

comprehensive research has been carried out to understand the effect of adding carbon fibers to density and ultrasonic pulse velocity of self-compacting concrete. Fifteen SCC mixes were prepared with two types of mineral admixtures and carbon fibers. Metakaoline and silica fume were used as mineral admixtures while carbon fibers were used as fiber inclusions. Two different fiber length (6mm and12mm) and fiber fraction (0.1 % and 0.5 %) was used. Different parameters such as slump flow diameter, T500 time, V-funnel time, blocking ratio and filling height difference were used to evaluate fresh state properties. Air-dry density and Ultrasonic Pulse Velocity …

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Design A Fuzzy Pid Controller For Trajectory Tracking Of Mobile Robot, M.J. Mohamed, M.Y. Abbas Aug 2026

Design A Fuzzy Pid Controller For Trajectory Tracking Of Mobile Robot, M.J. Mohamed, M.Y. Abbas

Engineering and Technology Journal

In this paper, a trajectory tracking control for a non-holonomic differential wheeled mobile robot (WMR) system is presented. A big number of investigations have been used the kinematic model of mobile robot which is a nonlinear model in nature, thus a hard task to control it. This work focuses on the design of fuzzy PID controller tuned with a firefly optimization algorithm for the kinematic model of mobile robot. The firefly optimization algorithm has been used to find the best values of controller's parameters. The aim of this controller is trying to force the mobile robot tracking a pre-defined continuous …

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