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: 2013 volume:31 issue:14 Part (A) Engineering

Article
Development of a Computer System to Find the Productivity of the Road Finisher
بناء نظام حاسبي لحساب انتاجیة مكائن اكساء الطرق

Loading...
Loading...
Abstract

The infrastructures are one of the basic elements which reflect nation’s development; therefore infrastructures are the main concern for all of the Officials responsible for development and maintenance of infrastructures. Preceding from this fact the main goal of the researcher is to build a management system, base on site investigation for pavement plants in several projects, to study their productivity and trying to improve them. After the completion of data collection for all plants which were used for road pavements, and process these data, several factors were found which affect their productivity. Based on the above, many suggestions were made, that will rise the productivity of these plants such as systematic planning, determine the requirements for the tracks that is used, types and number of rollers and finishers, number of compacting, speed of finisher, and gang size. All these factors may insure a good execution for the work, and also the construction of height production asphalt patching plants, maintenance, monitoring, daily tracking, training courses for the staff, provision of spare parts. An equation is determined for the optimum number of tracks, and also another equation for daily productivity per ton for the finisher is determined. Idle time for the finisher is determined, from the collected data, and from the finisher speed which was estimated in the finisher manual, and the asphalt layer thickness and density, equals to (18%) in the branches and (22%) in the main roads. The researcher is also determined a computer program for calculating the finisher productivity depending on the surrounding environments.

Keywords


Article
Interactive Architectural Design
التصمیم المعماري والتفاعلي

Loading...
Loading...
Abstract

Our time is an era of development of technological digital (connectional _ Informational)، which affected on human life. Thus it has an impact on the built environment according to the needs. In the same time it has to absorb the achievements of digital technology including architecture. This is the focuses of theresearch. Architecture has proved through ages its ability to accept technological development to generate output،to achieve the architectural innovation through recomposing its figure getting to a state of mutual interaction with manandnature. The research reviews in its discussing literatures previous definition of interactive Architecture and its historical development as a general placement of the research moving in its special segment to explore the particularity of interactive architectural design and its impact on architectural outcomes. Research problem focuses on the most important strategies of interactive design that represented by the interactive walls map with its application mechanisms applied in the latest architectural designs of the world in progress.

Keywords


Article
Improvement of Vertical Savonius Wind Turbine Performance
تحسین أداء توربین الھواء العمودي سوفینیس

Authors: Mohammed Hassan Ali Al –Musawi
Pages: 2596-2610
Loading...
Loading...
Abstract

This work presents a study of the vertical Savonuis wind rotor, including design, construct, and test, with a new configuration parameters, to improve its performance. The new rotor's parameters consist of two stages-four blades (main and secondary). The blades are arranged such that, leaving a separation gap between the inner ends of the blade to get the benefit of the air flow reaction energy in the bucket on the exit side, The secondary stage height equals 1/4 of the rotor height. The blades of the second stages are shifted by 45 degrees from main stage on the same axes. It is expected that the secondary stage assists the starting of the rotor and prevents the counter torque to appear in the static and dynamic torque cycle. This Savonius rotor turbine was tested on the subsonic wind tunnel model AF100 made by TecQuipment Ltd., with the range of wind velocities (U=0 to 20 m/s), on no load, it is found that the rotor started rotation at wind velocity of 1.2 m/s. The test of static torque Ts was done under constant velocity of 12 m/s, and dynamic torque T was performed under air velocities of (U=10, 12, 14, 16, and 18 m/s). Testing results show that the Savonius rotor turbine can start at low wind velocity from any position. The static torque coefficient Cts was improved, with peak to peak value of (17.2 – 39) % in the positive range during cycle of α=180º. The maximum power coefficient approach to (Cp=16% at λ= 0.8). Comparing the performance of this turbine with the others show that the power and torque coefficients are improved.


Article
Influence of Ceramic Particles Reinforcement on some Mechanical Properties of AA 6061 Aluminium Alloy
تاثیر التقویة بالدقائق السیرامیكیة على بعضالخواصالمیكانیكیة لسبیكة الالمنیوم (AA 6061)

Authors: Jameel Habeeb Ghazi
Pages: 2611-2618
Loading...
Loading...
Abstract

This paper is to investigate the influence of adding 5,10 and 15 weight percentage silicon carbide particles on some mechanical properties of 6061 Aluminium alloy. The composites Al6061/SiC were prepared by stir casting technique. The results revealed that as the reinforcement content was increased, there were significant increases in the ultimate tensile strength, yield strength and hardness of composites accompanied by a reduction in its percentage of elongation. Microstructural studies have been carried out to understand the nature of structure.


Article
Experimental and Theoretical Study of Vacuum Cooling System
دراسة تجریبیة ونظریة لمنظومة التبرید بالتفریغ

Loading...
Loading...
Abstract

A vacuum cooling system and the parameters which affect on its performance were studied experimentally and theoretically. For the experimental study the rig was built up to studying the performance of cooling system in three cases. These cases are: Cooling water by vacuum only, cooling water in conventional method, and cooling water by vacuum with condensation. The experimental results show that the addition of a condenser to the vacuum cooling system leads to sweep of largest amount of generated vapor, also the time consumed for the process was decreased. The times required for cooling 45 g from water from temperature 29oC to 10oC for the three test cases were 4375 second, 3535 second and 263 second, respectively. Vacuum cooling with condenser is a fast cooling of three systems test, which is about (13.7 times) faster than the system of natural convection cooling. To work properly, the existence of condenser is very important in vacuum cooling. It normally removes the large amount of water vapor generation (about 94%). For the theoretical study, a computer program was built up by employing the governing equation to simulate the performance of the vacuum cooling system. The theoretical results indicate an acceptable agreement with the experimental results. Also, the results show that the decreasing of condenser temperature causes decreasing of cooling time according to the equation (t = 0.2031Tcd4 - 2.8958 Tcd3 + 16.406 Tcd2 - 21.104 Tcd + 313.39), and increasing the evaporation surface area leads to decreasing of cooling time according to the equation (t=1/ (0.0006*Area+0.0005)), and the increasing of water mass causes in increasing of cooling time according to the equation (t=7.2667*mass+14).


Article
Study Natural Convection in a Porous Trapezoidal Cavity with a Square Body at the Center of the Enclosure
دراسة الحمل الحر داخل فجوة على شكل شبھ منحرف مملؤة بالمادة المتسامیة مع جسم مربع في مركز الغلاف

Authors: Zainab K. Radhi
Pages: 2632-2649
Loading...
Loading...
Abstract

Steady state free convection heat transfer in a two dimensional trapezoidal enclosure filled with a fluid-saturated porous medium with a square solid body located at the center of cavity, is performed in this study. The bottom wall of the cavity was heated with a sinusoidal temperature distributionq = l(1 - cos( 2pX )) , the inclined walls are insulated (adiabatic) and the top wall is maintained at q = 0. To obtain the effects of the presence of a square body on heat transfer and fluid flow inside the enclosure, three different temperature boundary conditions were applied for the body as cold ( θbody=0) , heated (θbody=1) and adiabatic ( = 0) ¶ ¶ n q at different Ra numbers. In this study, the governing equations were solved numerically using finite element software package (FLEXPDE). Results for the mean Nusselt number, Num, the contour maps of the streamlines and isotherms are presented. It is observed that fluid flow and temperature fields strongly depend on thermal boundary conditions of the body. A comparison of the flow field, isotherm field and averaged Nusselt number, Num with previous work, which revealed a good agreement.


Article
Bi2-Xhgxsr2-Ybaycacu2o8/Ag Sheath HTSC Wires, (Hg, Ba) Substitution Effect on the Critical Temperature

Authors: Akram R. Jabur --- Matti N. Makadsi --- Mohammed S.Mehde
Pages: 2650-2664
Loading...
Loading...
Abstract

Bi2-xHgxSr2-yBayCaCu2O8 High Temperature Superconductor (HTSC) has been prepared as a pellet by solid state reaction with a certain substitution percentages (0 ,0.05 ,0.1) of Hg and Ba substitution instead of Bi and Sr respectively . Then, HTSC wires were fabricated from the prepared superconductor pellets using powder in tube (PIT) method utilizing silver as the tube material. The prepared wires are of three types; with monofilament MOF, 9 multifilament core 9MF and 81 filaments core(81MF). Several cycles of mechanical drawing and rolling process performed to the starting silver tube of 0.4 cm diameter and 5 cm length to minimize the filament diameter. The average filament diameter with 81MFC wire was about 25μm measured with an optical microscope. Tc critical temperature for superconductivity is measured for the pellets and wires using four point probes techniques. These results show that the substation Bi by Hg give a rise to the superconductor to improve highly Tc , while substitution Sr with Ba lowers Tc .substitution of 0.05 , 0.1 Hg to the composition Bi2-xHgxSry-2BayCa1Cu2O8 will raise the transition temperature (Tc) . Also substitution of Sr by Ba decreases the transition temperature (Tc), Hg( 0.05 – 0.1 ) substitution still raise Tc after substitution of Ba with (0.05 – 0.1). low – Tc phase (2212) , 2201 phase in B-2212 system and the addition of Ag to silver sheaths and a small amount of impurity phases appear in the result of XRD analysis.


Article
PSO-Based Optimum Design Of PID Controller for Switching Reluctance Motor
التصمیم المثالي المستند الى حشد الجزیئات للمسیطر التناسبي – التكاملي – التفاضلي (PID) لمحرك المعاوقة التبادلي

Authors: Ekhlas M. Thejeel --- Mazin M. Mahdi --- Zainab N. Abbass
Pages: 2665-2679
Loading...
Loading...
Abstract

This paper presents simulation results for three phase, 6/4 poles switched reluctance motor (SRM) by using particle swarm optimization (PSO) method for formative the optimal proportional-integral-derivative (PID) controller tuning parameters.The proposed approach has superior feature, including easy implementation, stable convergence characteristics and very good computational performances efficiency. The main focus of this paper is to investigate the dynamic performance of switched reluctance (SR) motors. This investigation is achieved through simulation using MATLAB/SIMULINK. Digital simulation results show that the designed (PSO) have a good dynamic behaviour of the motor, a perfect speed tracking with no overshoot and a good rejection of impact loads disturbance. The results of applying the (PSO) mode controller to a SRM give best performances and high robustness than those obtained by the application of others controller. The obtained results of the closed loop PSO-PID response shows excellent performance with respect to the PID controller.


Article
Increasing the Protocol Gain of Quantum Cryptography
زیادة المكسب لبروتوكول التشفیر الكمي

Loading...
Loading...
Abstract

Quantum cryptography is a technique to distribute a sequence of truly random and unconditionally secure bits over a secure communication by applying the phenomena of quantum physics. The distributed secret bits perform the secret key which is used later to encrypt messages with an encryption algorithm, usually the One-Time-Pad is used. Quantum Key Distribution solves the security problem in classical cryptography by depending on the laws of physics which is focusing on the physics of information. Quantum protocol gain usually is low due to the quantum channel noise and the difference between the photon polarization at the sender and receiver side; in this research, a method is proposed to increase the protocol gain without decreasing the security level of quantum key. BB84 quantum key distribution algorithm is implemented and simulated with MATLAB R2010a simulation; and a comparison is made with A. Singh and N. Sharma [14] results.


Article
Effect of Quenching Media on Wear Resistance of AISI 52100 Bearing Steel Alloy
تأثیرأوساط التقسیة على مقاومة البلیان لسبیكة فولاذ المسند AISI 52100 steel

Authors: Enaam obeid hassoun
Pages: 2692-2700
Loading...
Loading...
Abstract

A study has been made to evaluate wear behavior of AISI 52100 steel under different quenching media. This investigation was accomplished by two stages. In the first stage of the study , quenching treatment was applied to the steel alloy and then cooling was carried out in various media (Oil , Polyvinyl Alcohol , Glycerol), and finally low temperature tempering (200Co) was applied to the quenched samples to eliminate internal stresses after transformation from austenization temperature to the temperature which the samples were cooled. Microstructural examination was achieve using light microscopic for all heat treated specimens after metallographic preparations . In the second stage , pin - on - disk technique was used to determine the wear rate of the treated specimens depending on weight loss method . Worn surfaces of the steels were examined using light microscopic to characterize the topography of the surfaces. The results exhibited that (i) Martensitic matrices with retained austenite can be obtained depending on the quenching medium . (ii) Chromium carbides have been precipitated as a result of quenching heat treatment in different quenchants . (iii) Quenching in oil and then tempering revealed wear resistance more than other quenchants . (iv) wear cracks were presented on the worn surfaces of the steels which was used in this work .


Article
A Comparison Study of Mechanical Properties between Friction StirWelding and TIG Welded Joints of Aluminum Alloy (Al 6061-T6)
دراسة مقارنة الخواص المیكانكیة لوصلات ملحومة بطریقة اللحام بالخلط الاحتكاكي واللحام بقطب التنكستن لسبیكة المنیوم 6061-T6

Authors: Muna Khethier Abbass --- Hassan Hady Abd
Pages: 2701-2715
Loading...
Loading...
Abstract

In this study two different welding processes have been considered, a conventional tungsten inert gas (TIG) and a relatively new solid state welding known as friction stir welding (FSW). TIG welding process has been performed on Al 6061-T6 of thickness 4mm by using filler metal of Al-Mg alloy type (ER5356) according to AWS classification metal with tungsten electrode (EWth-2) and arc voltage of (12V). Various welding currents of (125, 160, 200, 225) Amp were used under argon as shielding gas of flow rate of (15-20 cf / hour) and welding speed of 280 mm/min. Friction stir welding is carried out using automatic milling machine with five different welding or bed speeds of (25-50-80-100-125 mm/min) and five different tool rotation speeds of (630-800-1000-1250-1600 rpm). Tool steel of type R18 consists of a shoulder with diameter of (20 mm) and pin of diameter (5.5 mm). Xray radiographic inspection, tensile test and microhardness test of FSW and TIG joints at optimum welding conditions were made. The results indicate that the best tensile strength of FSW joints is 289 MPa and joint efficiency is 79% which were welded with welding parameters of (1250 rpm, 800 rpm and 50 mm/min, 125 mm/min) respectively. While in case of TIG joint the best tensile strength is 210 MPa and joint efficiency is 57%. It was found that the microhardness hardness values in the TIG welded joints are lower than that of the FSW joints. The formation of fine equiaxed grains and very fine strengthening precipitates (Mg₂Si) in the stir or weld region are the reasons for higher tensile strength and hardness of FSW joints compared to TIG joints.


Article
Aluminum Filler Content Effect on the Dynamic Behavior of Sandwich Panel Subjectedt Impact Load
تأثیر كمیة دقائق الالمنیوم على السلوك الدینامیكي لشطیره خلیة النحل عند سرعة الصدم الواطئة

Loading...
Loading...
Abstract

Experimental investigations had been done in this work to demonstrate the effect of aluminum filler contents on the dynamic behavior of (30%) weight fraction glass-polyester sandwich panel under low velocity impact. The composite sandwich panels are manufactured using the honeycomb core and laminated composite face sheets. The wet hand layup technique is used. The mechanical properties were tested based on ASTM D- 638. The panel is fixed from three sides and the other is free. The impact load is applied. The dynamic response of the plate is measured using vibration data collector (TVC 200). The panel is supported also on a rigid foundation. The steel impactor of 15 kg weight dropped from 2 m height. The deformation is measured using vernier caliper. The results showed that the mechanical properties are improved when the aluminum filler content increased up to 5% and then decreased after that. The dynamic behaviors have the same but differ in magnitude. The minimum deflection and deformation takes at 5% filler content for both face and core. At 5% filler content the deflection and deformation decreased by 20% and 56% respectively less than the unfilled panel. The effects of using different faces with the same core have a little variation.


Article
Practical Application and Construction for Mobile Robot
التطبیق والبناء العملي للإنسان الآلي النقاَّلِ

Authors: Mohamed Jasim Mohamed --- Mustaffa waad Abbas
Pages: 2727-2745
Loading...
Loading...
Abstract

This paper describes the construction of a rover mobile robot which is used to follow the resultant optimal path from the global path planning technique. A remote computer is used to control the motion of the mobile robot and to upload the data of the path wirelessly. The control (positioning and directing) of the robot is based on the readings of two wheel encoders. The current direction and position of the robot are calculated relatively to its previous direction and position. The control algorithm is capable to move the mobile robot in order to follow a certain path. The software of the control algorithm is executed using PIC microcontroller. To prove the efficiency of the control algorithm, this algorithm applied on the constructed mobile robot to move it in real world environment between different start and end points. The constructed mobile robot shows that it can follow the required path and reach the target within specified error percent.


Article
Investigation of Correlation and Prediction of Excess Molar Volume Using Different Equations of States
دراسة الارتباط و تنبؤ الحجم الفائض باستخدام معادلات الحالة المختلفة

Authors: M. O. Abdullah --- Venus M. BakallBashy --- Fatma Dhaif Ali
Pages: 2746-2759
Loading...
Loading...
Abstract

Prediction and correlation of accurate value of excess molar volume VE are of great interest for adequate design of industrial process and for theoritical purpose.Soave RedlichKwong (SRK-EOS), Peng-Robinson (PR-EOS), and Peng- Robinson-Stryjek-Vera (PRSV-EOS) are selected.Five Mixing Rules are applied on different groups systems of different polarity which are: Conventional Mixing Rules, Quadratic Mixing Rules, Adachi and SugieMixing Rules,a modified Adachi and Sugie mixing rules. Another tried method to extend the applicability of CEOS by usingthe best applicable EOS from the three selected EOS with the PRSV-EOS with a new correlation method thatuses Excess Gibbs free energy (GE) and Huron- Vidal Method.Also by means of using Huron-Vidal Mixing Rules (HV) .the Huron-Vidal Method is developed by using an adjustable parameter hij.The developed applied method gave very acceptable results for binary mixtures. To find the applicability of the gated constant for different group families; same constants of the binaries which confirm the ternary system are quite well applicable to calculate VE data for ternary system with very reasonable accuracy.


Article
Experimental Behavior of Circular Steel Tubular Columns Filled with Self-Compacting Concrete under Concentric Load
السلوك العملي للاعمدة الفولاذیة الانبوبیة الدائریة و المملؤة بالخرسانة ذاتیة الرص تحت تأثیر حمل محوري

Authors: Saad N. Sadik --- Wael S. Abdul-Sahib --- Ammar A. Ali
Pages: 2760-2772
Loading...
Loading...
Abstract

This paper presents an experimental study on the behavior of circular, concretefilled, steel tube (CFT) columns concentrically loaded in compression to failure. Selfcompacting concrete (SCC) is used here as a filler in order to increase homogeneity of the core and reduce segregation problems. Total six column specimens with different lengths (0.4 m – 1.5 m) of constant diameter of 160 mm and wall thickness of 2.8 mm were tested. The purpose here is to investigate the ultimate capacity and the deformation behavior of different slenderness ratio columns. The behavior of these columns in confinement was discussed. Experimental results indicate that the compression force capacity is affected by slenderness ratio of the column. For slender column the overall buckling was observed while for the short columns the crushing and the local buckling is the dominant failure shape.

Keywords

circular --- column --- steel --- SCC --- slenderness

Table of content: volume:31 issue:14 Part (A) Engineering