Table of content

Engineering and Technology Journal

مجلة الهندسة والتكنولوجيا

ISSN: 16816900 24120758
Publisher: University of Technology
Faculty: Presidency of the university or centers
Language: Arabic and English

This journal is Open Access

About

The Journal aims to disseminate knowledge in the fields of Engineering, Technology and Sciences .All the researches will submit to the scientific evaluation procedures of publishing and documentation. The journal under takes only the publishing of the new researches that had not been published previously on other journals or debated in conferences.

The Instructions of Submitting The Research to Scientific Evaluation:
a- The research should be Submitted in 4 copies in Arabic or English Languages, auther's name should be eliminated from 2 copies only. The abstract should be typed on the front page not exceeding (150 words) in both Arabic and English on size (A4) sheet. Pages should be numbered and not more than (15) page.
b- The researcher should fill a declaration form which states that he doesn't publish the research during the evaluation period. He must give his full address phone number and e-mail.

Firstly- The author should pay a fee of (ID55000) when he submits the research and a fee of (ID55000) when the research is accepted .These fees are obligatory for all. The sum cannot be reimbursed in any case.
Secondly- The annual subscription in the journal inside Iraq is ID250000) Iraqi dinar, and outside Iraq is (us $250) abroad.
____________________________________________
____________________________________________
Engineering and Technology Journal
Publication Ethics
The publication of science and technology include thorough, methodical and complete processes by publishers and editors which have to be handled efficiently and proficiently. To sustain high ethical values of publication, publishers attempt to work intimately at all times with editors, authors, and peer-reviewers. The ethics statement for the Engineering & Technology Journal is based on those issued by the Committee on Publication Ethics (COPE) Code of Conduct guidelines available at www.publicationethics.org. The basic publishing ethics involved in the publishing process can be summarized as follows:

Reviewers’ Responsibilities
The responsibilities of the reviewers can be identified as:
• To provide a detailed, effective, and unbiased evaluation in promptly on the scientific content of the work.
• To indicate whether the writing is relevant, brief and clear and evaluating the originality and scientific accuracy of the submitted paper.
• To maintain the confidentiality of the complete review process.
• To inform the journal editor about any financial or personal conflict of interest and reject to review the manuscript when a possibility of such a conflict exists.
• To inform the journal editor of any ethical concerns in their evaluation of submitted manuscripts; such as any violation of ethical treatment of animal or human subjects or any considerable similarity between the previously published article and any reviewed manuscript.

Authors’ Responsibilities
The responsibilities of the authors can be described as:
• To assure that all the work reported in the manuscript must be original and free from any plagiarism.
• To make confident that the submitted work should not have been published elsewhere or submitted to any other journal(s) at the same time.
• To explicitly acknowledge any potential conflict of interest.
• The author(s) must give proper acknowledgments to other work reported (individual/company/institution). Permission must be obtained from any content used from other sources.
• It is important to note that only those who have made any substantial contribution to the interpretation or composition of the submitted work should be listed as ‘Authors’. On the other hand, other contributors should be mentioned as ‘co-authors’.

Publishers’ Responsibilities
The responsibilities of the Engineering & Technology Journal can be defined as:
• Engineering & Technology Journal is committed to working with journal editors, defining clearly their relevant roles, in order to ensure appropriate decisions regarding publication procedures and maintaining the transparency of editorial decisions.
• Engineering & Technology Journal guarantees the integrity autonomy and originality of each published article concerning:
o publication and research funding
o publication ethics and integrity
o conflicts of interest
o confidentiality
o authorship
o article modifications
o timely release of content.
____________________________________________
____________________________________________

ENGINEERING AND TECHNOLOGY JOURNAL
Scientific Refereed Journal Issued by University of Technology, IRAQ
COPYRIGHT AGREEMENT

The following assignment of copyright, executed and signed by the Author, is required with each manuscript submission. If the article is a “work made for hire”, the employer must sign it. The Author warrants that he/she has full power to make this agreement on behalf of himself and all his co-authors.
To the extent transferable, copyright in and of the undersigned, Author’s article titled:
************************************************************************by: *************************************************Reference ID: ******* submitted to the Engineering and Technology Journal is hereby assigned for publication.
In consideration of the acceptance of the Article for publication, the Author assigns to the Journal with full title guarantee, all copyrights, rights in the nature of copyright, and all other intellectual property rights in the Article throughout the world (present and future, and including all renewals, extensions, revivals, restorations and accrued rights of action).
The Author represents that he is the author and proprietor of this Article and that this Article has not heretofore been published in any form. The Author warrants that he has obtained written permission and paid all fees for use of any literary or illustration material for which rights are held by others. The Author agrees to hold the Editor(s)/Publisher harmless against any suit, demand, claim or recovery, finally sustained, by reason of any violation of proprietary right or copyright, or any unlawful matter contained in this article:



Signature: Date:
Name of Author:
Institution or Company:

Loading...
Contact info

جمهورية العراق –بغداد
الجامعة التكنولوجية- مجلة الهندسة والتكنولوجيا- ص.ب. 35010
Email: etj@uotechnology.edu.iq
____________________________________________
Journal website:
http://uotechnology.edu.iq/tec_magaz/EN/index.htm
____________________________________________
Republic of Iraq, Baghdad
University of Technology, Engineering & Technology Journal.
P.O.Box.35010
Email: etj@uotechnology.edu.iq

Email: uot_magaz@yahoo.com
__________________________________________
__________________________________________

Google Scholar Citations:
________________________
https://scholar.google.com/citations?user=w1aCAoMAAAAJ&hl=en

Table of content: 2018 volume:36 issue:10 Part (A) Engineering

Article
Studies on Characterization of Sawdust for Application in a Gasification Process for Syngas Production

Loading...
Loading...
Abstract

Quintessential characteristics of sawdust were investigated in this study as well as to to investigate the ability of reed as a Production of gases via gasification technique by using special gasifier made for this purpose. The physical properties of solid waste results showed that sawdust were suitable for using in production of syngas due to its high volatile matter and cellulose content and low moisture content. The CHNS analysis results showed that high content of hydrogen for sawdust has generated higher amount of syngas heat value, while gravimetric analysis results showed that high cellulose and hemicellulose content gave higher concentration of hydrogen gas. The percentage of production gases was 15.6%, 10.2%, 7.81% and 1.69% for carbon monoxide, carbon dioxide, hydrogen and methane respectively. The effect of operation time on composition of syngas was investigated to generate good quality gas from different types of solid waste. The quality of syngas was started decreasing after about 30 min of gasifier operation. Therefore, each full capacity run should be limited to only 30 min until refeeding is required.

Keywords

Gasifire --- Sawdust --- syngas --- biomass materials.


Article
Study The Effect of Micro CaCO3 and SiO2 and their Mixture on Properties of High Strength Concrete

Loading...
Loading...
Abstract

This paper investigated the effect of incorporating two types of micro particles micro CaCO3 and micro SiO2 on mechanical properties and durability of concrete. Micro materials were added in four different dosages of 1%, 2%, 3% and 4% by weight as partial replacement of cement in concrete mixture. Mechanical properties of hardened concrete (compressive strength, flexural strength and split tensile strength) have been done after 28 days of water curing. In addition, water absorption test was carrying out for obtaining the durability properties of concrete specimen. Binary combination of micro CaCO3 + micro SiO2 were also studied the combined effect of the micro particles. Micro-structural characteristic of modified concrete was done through the scanning electron microscope. The results showed that incorporation of micro CaCO3 and micro SiO2 particles lead to increase the packing and enhance the mechanical properties and durability of concrete. A significant performance was observed in case of micro silica addition to the concrete in comparing with other micro particles.


Article
Microstructure and Electrical Conductivity of 7075Al alloy/SiC Nano Composites

Authors: Hussain J. Al-Alkawi --- Sameir A. Aziez --- Deana A. Idan
Pages: 1034-1038
Loading...
Loading...
Abstract

Analysis using scanning electron microscope (SEM) at high magnification showed that the microstructure of the nano composites exhibited uniform distribution of SiC particles and less porosity. The experimental results revealed that adding Nano Reinforcement to 7075Al alloy improve the electrical conductivity for the metal matrix composites with 3, 6, 9 wt. % SiC were adopted in this work. The maximum enhancements were observed at 9wt. %SiC of 5200(Ω. m) -1 compared with the metal base of 35 (Ω. m) -1.


Article
Influence of SAW Welding Parameters on Microhardness of Steel A516-Gr60

Authors: Sadeq H. Bakhy --- Samir A. Amin --- Fouad A. Abdullah
Pages: 1039-1047
Loading...
Loading...
Abstract

Submerged Arc Welding (SAW) process is generally used for industries, such as petroleum storage tanks, pressure vessels, and structural components. Good mechanical properties of welded joint lead to crack-free strong joints. In this research, included angle, current, welding travel speed and arc voltage were utilized as welding parameters to weld ASTM A516 Grade 60 (low carbon steel). The experiments were carried out according to a design matrix that established by DOE (Version10) with RSM technique. Microhardness of welded samples was measured by a Digital Microhardness Tester, and then RSM technique was used to model and optimize the microhardness based on the welding parameters. The results showed that the including angle and welding current have a great effect on the microhardness. The optimum solution for minimum microhardness was found at 450 Amp welding current, 38 cpm welding speed, 34-volt arc voltage and included angle of 60⁰. The optimum value of microhardness was (186.7 HV). Eventually, the experimental and predicted results of microhardness were found in good agreement with 4.6%. maximum error.

Keywords

SAW --- Microhardness --- Welding parameters --- DOE --- RSM


Article
The Influence of Punch Profile Radius on Deep Drawing Process in Case of a Low Carbon Steel Cylindrical Cup

Authors: Waleed K. Jawad --- Abdullah S. Jaafar
Pages: 1048-1058
Loading...
Loading...
Abstract

This research aims to investigate the effect of punch profile radius on the drawing force, cup wall thickness, amount of spring back induced in the drawn cup, contact regions between blank and punch, strain distributions over the cup wall and height of drawn cup, in deep drawing operation. In this study, a commercial FEA software package (ANSYS11.0) was employed to model a deep drawing operation. A 3-D model of cylindrical cup of (53.4 mm) outer diameter and (33mm) height from a low carbon steel (1008–AISI) of (0.7mm) sheet thickness has been developed and then the FE simulations results are compared with experimental results. To carry out the experimental work, six types of punches of (52mm) diameter with various punch profile radius of (4, 8, 12, 16, 20, 26 mm), die of (53.75mm) die opening diameter with die profile radius of (4 mm) and blanks of (95 mm) diameter have been manufactured. The results indicate that the strain distributions for all punches chosen are similar in shape, and have the same trends. The length of contact distance between the punch and blank increases as the punch corner radius increases and its value approximately is equal to punch corner radius. Drawing force dose not significantly influence by punch corner radius. Thinning increases as punch profile radius increases, and the greatest thinning occurs with the hemispherical punch of (Rp= 26mm). The cup height and the amount of spring back percentage increases as punch profile radius increases.


Article
Effect of Natural Fibers on Mechanical Properties of Polymer Composites

Authors: Ruaa H. AbdulRaheem
Pages: 1059-1067
Loading...
Loading...
Abstract

The mechanical behavior of coconut shell (CS) particulate epoxy composites was concentrated on keeping in mind the end goal to create designing materials for modern application. Minute of the support with various weight portions (5, 10, 15, 20 and 25) wt%. Epoxy and composite materials were prepared by hand lay-up molding. The physical properties are thermal conductivity while the mechanical properties were hardness, tensile properties, impact properties, and flexural strength. The resulting composites of thermal conductivity 0.1005 W∕ m.c° that is lower than pure epoxy and commonplace materials utilized for home-structures. As for the mechanical properties, composite materials with (Epoxy+25%CS) has the maximum hardness of (76.6) shore D, The ultimate tensile strength of 33.42MPa was obtained from (Epoxy+25%CS), while the elongation at fracture with addition in filler concentration of 1.50 % was obtained from (Epoxy+25%CS) is lower than other composites. The highest impact strength, fracture toughness was 80J∕m2, 12.87 MPa.m-1/2 respectively. Flexural strength & shear stress of the composite materials with addition in reinforcement content at 5wt % &10wt% (39, 40.5)Mpa & (1.95,2.03)Mpa respectively while is other composites.


Article
Preparation and Characterization of TiO2 Nanoparticles and its Applications as Antibacterial Agents

Loading...
Loading...
Abstract

TiO2NP’s were synthesis by sol-gel method at different calcination temperatures. The prepared TiO2NP’s were characterized by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and UV-Vis spectrophotometer. The antimicrobial activities of the prepared TiO2NP’s were investigative for two kinds of bacteria, (Gram-negative and Gram-positive bacterium. XRD results shows that the type of the TiO2 structure was anatase (A) at low temperatures, rutile (R) with rise of calcination temperature (Tc) into 800 ᵒC and mixed phases .SEM demonstrated that the size of nanoparticles seems larger and the accumulations appears clearly with raise calcinations temperature. The optical properties measured by the UV-Vis. Spectroscopy to compute the energy band gap for all phases around (3.75- 3.5 eV) for anatase and (3.4eV) for rutile. TiO2 nanoparticles in both phases showed excellent antibacterial activity against two representative bacteria, Pseudomonas aeruginosa and Staphylococcus aurous.


Article
Synthesis of Multi-Walled Carbon Nanotubes Decorated with Zinc Oxide Nanoparticles for Removal of Pathogenic Bacterial

Loading...
Loading...
Abstract

A series of Zinc Oxide Nanoparticles (ZnONPs)-functionalized Multi-Walled Carbon Nanotubes (F-MWCNTs) Nano composites were developed as antibacterial. In this study, chemical oxidation of pristine MWCNTs were carried out with a mixture of strong acids (3H2SO4 98%:1 HNO3 65%).The F-MWCNTs were used as templates to prepare hybrid material like ZnONPs decorated F-MWCNTs. Pristine MWCNTs, F-MWCNTs and (ZnONPs/F-MWCNTs) Nano composites powder were investigated using Fourier Transform Infrared spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). Anti-bacterial activity has been carried out using standard agar dilution (plate count) method against Escherichia coli (E. coli). This study demonstrated that (ZnONPs/F-MWCNTs) Nano composite has a powerful bactericidal effect against Escherichia coli (E. coli) at concentration 0.5 mg/ml after 3 hr, which led to speculation that the combination of ZnONPs and F-MWCNTs altered their toxicity and improved antibacterial property of Nano composite.


Article
Analysis and Simulation of Unmanned Aircraft Propeller Motor Using PSIM

Authors: Ahmed S. Yousif --- Ammar S. Mohammed
Pages: 1081-1090
Loading...
Loading...
Abstract

The study and simulation of a PI speed controller for small UAV or quadcopter motor is discussed in this research. The motor under consideration is MAXON 2260 215, which is a brushless DC motor that has permanent magnets on the rotating part and the stationary windings are connected so that the back electromotive force is trapezoidal. The motor utilizes a PI controller, which dominate the duty cycle of the PWM pulses applied on the switches of the inverter so that the motor can run at the required speed. A Chopper is used as a power converter and a proportional–integral as speed and current controller. The DC motor, which is being run individually, can be controlled on a wide range of operation up to the rated speed. The simulation is implemented and evaluated using PSIM software program under a wide range of speed, voltage and load torque inputs such as the rated speed and load torque, half the rated load torque and half speed since these tests are vital to test maneuver movement such as roll, pitch, yaw and throttle. The main objectives of this paper are; to understand the process of deriving the model for a propeller motor, to evaluate the stability and accuracy of the control loop for successful aviation, to apply a tuning plan on a closed loop system (PI) and to check the system procedure versus the given technical specifications.

Keywords

PSIM --- quadcopter --- Propeller --- PWM --- PI --- Motor --- simulation


Article
Optimization of Heat Treatment Parameters for the Tensile Properties of Medium Carbon Steel

Authors: Abbas Kh. Hussein --- Laith K. Abbas --- Wisam N. Hasan
Pages: 1091-1099
Loading...
Loading...
Abstract

The purpose of this study is designate quenching and tempering heat treatment by using Taguchi technique to determination optimal factors of heat treatment (tempering temperature, percentage of nanoparticles, type of base media, nanoparticles type and tempering time)for increasing ultimate tensile strength, yield strength and ductility properties of medium carbon steel. An (L18) orthogonal array was chosen for the design of experiment. The optimum process parameters were determined by using signal-to-noise ratio (larger is better) criterion. The importance levels of process parameters on tensile properties were obtained by using analysis of variance, which applied with the help of (Minitab18) software. Percentage of volumetric fractions of nanoparticles with three different levels(0.01, 0.03 and 0.08 %) were prepared by dispersing nanoparticles that are (α-Al2O3,TiO2 and CuO) with base fluids (De-ionized water, salt solution and engine oil).Medium carbon steel specimens were suffered to hardening and tempering heat treatment process. The variables of tempering heat treatment were temperatures (400 C˚, 550 C˚) and a soaking times (30, 45 and 60 minutes) respectively. Tensile testing performed on samples using united universal hydraulic machine. The results for ( S/N) ratios showed the order of the factors in terms of the proportion of their effect on ultimate tensile strength, yield strength and ductility properties as follow: Tempering temperature ( 400 C˚) ,Nanoparticles type (TiO2 ),Tempering time (30 min),Type of base media (salt solution, engine oil) and Percentage of nanoparticles ( 0.03%) was the least influence for ultimate strength and yield strength while for the elongation were as follows: Tempering temperature (550 C˚),Tempering time(60min), Nanoparticles type (CuO),Type of base media (deionized water) and last percentage of nanoparticles (0.08%).


Article
MaximizinggtheeValueeoffDecay Rateefore a VibratednBeam

Authors: Sherko A. Ibrahem --- Tahseen T. Othman
Pages: 1100-1109
Loading...
Loading...
Abstract

This paper presents design controllers by using control strategies and (LMI) in order to attenuate the vibrations of a beam. An Aluminum beam with fixed-fixed configuration was chosen as an application example of (AVC) of structure. Six conditions had been taken for (AVC) of the beam. In each condition the beam was the same, the changes was in the actuator and in the disturbance according to the location and the kind of the force applied. The attenuation in vibrations of this beam is in maximizing the decay rate (increasing the damping) and limiting the amplitude of the Beam. In this study Pzt actuator had be used, this Pzt have some constraints in the maximum voltage that can be applied, so the input signal must be bounded and limited to some value. In the result there are four requirements for (AVC), stability, input peak bound, output peak bound, and maximizing the decay rate. These requirements had been formulated in the form of (LMI). These (LMI) can be solved by using The Method of Centers For Minimizing The Eigen values. Once the problem solved, the response of the system in the time domain and in frequency domain had been plotted with controller and without controller. The percentage of reduction in the settling time for condition one was (75.9%), while for condition four was (94.6%) and for condition five was (88.32%). The settling time for conditions two and three had increased which means these two conditions are not useful for active vibration control


Article
Table of content: volume:36 issue:10 Part (A) Engineering