Table of content

Journal of Engineering

مجلة الهندسة

ISSN: 17264073/25203339
Publisher: Baghdad University
Faculty: Engineering
Language: Arabic and English

This journal is Open Access

About

The Journal Engineering was issued in 1986. It was Stopped from 1990 – 1997 because of the economic blockade. It restarted publication after the fourth scientific engineering conference for it published the papers that were accepted in the conference.
It is a scientific engineering journal refereed by specialized and qualified professors in most of the engineering fields and those Specialists in the issued by the college of Engineering university of Baghdad .It was serenely publibued , but from 2011 it has issued of monthly for the numerous papers submitted to the journal to publish their papers in this scientific journal in addition to some of the Arabs professors because the journal is considered one of the valued journals in the Arabic homelan .
Many professions were the head editor of the journal from its first issue. The first one was prof.dr. Laith Ismail Namiq then prof.dr. Mohammed A.Alawis ,prof.dr.Ali A Al – kilidar prof.dr. Abdul-Ilah Younis and currently Prof.dr.Qais S. Ismail.

AIMS AND SCOPE

The Journal of Engineering is an open access, monthly, refereed, peer-reviewed journal. It focuses on the different disciplines of engineering.

Its scope is to cover almost all the aspects of engineering and technology and their related topics. The Journal of Engineering tries to emphasize on publishing high-quality papers with an acceptable, professional and considerable background.

The submitted papers undergo plagiarism, a double-blind peer review by professionals in the paper specific specialty. This process is accomplished according to the Journal criteria of evaluation, where the manuscript, contents, and organization of the paper are to be checked. The papers will be available online for the readers.

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Contact info

Jadriyah, Baghdad
Iraq
Mobile:+964 7714076860
Email: info@jcoeng.edu.iq
https://www.jcoeng.edu.iq

Table of content: 2017 volume:23 issue:7

Article
Enhancing Performance of Self–Compacting Concrete with Internal Curing Using Thermostone Chips
تحسين اداء الخرسانه ذاتية الرص بواسطة الانضاج الداخلي باستعمال فتات الكتل الخرسانية الخلوية

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Abstract

This paper is devoted to investigate the effect of internal curing technique on the properties of self-compacting concrete (SCC). In this study, SCC is produced by using silica fume (SF) as partial replacement by weight of cement with percentage of (5%), sand is partially replaced by volume with saturated fine lightweight aggregate (LWA) which is thermostone chips as internal curing material in three percentages of (5%, 10% and 15%) for SCC, two external curing conditions water and air. The experimental work was divided into three parts: in the first part, the workability tests of fresh SCC were conducted. The second part included conducting compressive strength test and modulus of rupture test at ages of (7, 28 and 90). The third part included the shrinkage test, at ages (7, 14, 21, 28) days. The results show that internally cured SCC has the best workability, and the best properties of hardened concrete which include (compressive strength and modulus of rupture) then the externally cured SCC with both water and air as compared with reference concretes. Also, the hardened properties of internally cured SCC with replacement percentage of (10%) by thermostone chips is the best as compared with that of percentages (5% and 15%) for both external curing conditions. In general, the results of shrinkage test, showed reduction in shrinkage of internally cured SCC as compared with reference concrete.


Article
Prepare rules spatial data for soils and the Calculation of an Area in Iraq for Industrial Purposes using Geographic Information Systems (GIS)
اعداد قواعد بيانات المكانية للترب وحساب مساحاتها في العراق للإغراض الصناعية باستخدام نظم المعلومات الجغرافية (GIS)

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Abstract

The process of soil classification in Iraq for industrial purposes is important topics that need to be extensive and specialized studies. In order for the advancement of reality service and industrial in our dear country, that a lot of scientific research touched upon the soil classification in the agricultural, commercial and other fields. No source and research can be found that touched upon the classification of land for industrial purposes directly. In this research specialized programs have been used such as geographic information system software The geographical information system permits the study of local distribution of phenomena, activities and the aims that can be determined in the local surrounding like points, lines and areas, where the geographical information system treats the data related to these points, lines and areas to make the data ready to be returned for analysis or asking about certain information by using it. The research aims to employ the potential given by GIS use in the field for building geo data based for soil classification in Iraq and transferring the traditional paper maps into digital maps. Then making the layers that the maps made of and preparing the geo data base that are appropriate .After that analysis of these data is done which permits for less effort and cost and finally increasing in the production speed and accuracy.


Article
Influence of Temperature Upon Permanent Deformation Parameters of Asphalt Concrete Mixes
تأثير درجات الحرارة على معاملات التشوهات الدائمية للخلطات الإسفلتية

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Abstract

The performance of asphalt concrete pavement has affected by many factors, the temperature is the most important environmental one which has a large effect on the structural behavior of flexible pavement materials. The main cause of premature failure of pavement is the rutting, Due to the viscoelastic nature of the asphalt cement, rutting is more pronounced in hot climate areas because the viscosity of the asphalt binder which is inversely related to rutting is significantly reduced with the increase in temperature resulting in a more rut susceptible paving mixtures. The objective of this study is to determine the effect of temperatures variations on the permanent deformation parameters (permanent strain (p), intercept (a), slope (b), Alpha and Mu) as well as resilient strain (r) and resilient modulus (Mr). To achieve this objective, one aggregate gradation with 12.5mm nominal maximum size, two grades of asphalt cements (40-50 and 60-70) brought form Al- Daurah refinery, limestone dust filler has been used to prepare the asphalt concrete mixtures. 30 Marshall specimens were prepared to determine the optimum asphalt cement content. Thereafter, 30 cylindrical asphalt concrete specimens (102mm in diameter and 203 mm in height) are prepared in optimum asphalt cement and optimum ±0.5 percent. The prepared specimens were used in uniaxial repeated load test to evaluate the permanent deformation parameters of asphalt concrete mixes under the following testing temperature (5, 15, 25, 40 and 60̊c). The test result analyses appeared that Mr is decrease 51 percent when temperature increased from 5 ̊c to 25 ̊c and then decrease 22 percent with further increase in temperature from 25 ̊c to 60 ̊c. Also, the Alpha value decreases by a factor of 1.25 and 1.13 when temperature increases from 5 ̊c to 25 ̊c and 25 ̊c to 60 ̊c, respectively. Finally, statistical models were developed to predict the Alpha and Mu parameters of permanent deformation.


Article
Regulations Enforcement Mechanisms for Sustainable Housing Projects
آليات انفاذ ضوابط مشاريع السكن المستدام

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Abstract

Regulations are one of the instruments that governments used to achieve objectives of their policies. Sustainable projects often face compliance problems when working to meet the applicable regulations. The challenge for governments is to develop and apply enforcement mechanisms that achieve the best possible outcomes by achieving the highest possible levels of compliance. The aim of this paper is to identify the most effective mechanisms that can be used to develop a framework for the regulations enforcement for the applications of sustainable housing projects. Accordingly, this paper reviews the common classification of building regulations and enforcement steering mechanisms, in addition to the related international tools of sustainable housing development. The researchers developed a questionnaire included proposals for legislation within five main themes: materials, energy efficiency, water efficiency, health and safety as well as management of residential complexes during the occupation and maintenance phase. Findings represented the highly importance and top preference of incentive mechanism for enhancing sustainable housing regulations. Furthermore, in the theme of health and safety is within the authority of the institution that set these regulations to be imposed on providers and developers of housing. While the results of both energy efficiency and management of housing complexes indicate that legislation be obligated through centralized Act and not as an institutional, so any institution must impose these legislations on housing developers.


Article
Adsorption of Mefenamic Acid From Water by Bentonite Poly urea formaldehyde Composite Adsorbent
امتزاز حامض الميفيناميك من الماء بواسطة خليط البنتونيت البولى يوريا فورمالدهايد كمادة ممتزة

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Abstract

Poly urea formaldehyde –Bentonite (PUF-Bentonite) composite was tested as new adsorbent for removal of mefenamic acid (MA) from simulated wastewater in batch adsorption procedure. Developed a method for preparing poly urea formaldehyde gel in basic media by using condensation polymerization. Adsorption experiments were carried out as a function of water pH, temperature, contact time, adsorbent dose and initial MA concentration .Effect of sharing surface with other analgesic pharmaceuticals at different pH also studied. The adsorption of MA was found to be strongly dependent to pH. The Freundlich isotherm model showed a good fit to the equilibrium adsorption data. From Dubinin–Radushkevich model the mean free energy (E) was calculated and the value of 5 KJ/mole indicated that the main mechanism governing the adsorption of MA on PUF-Bentonite composite was physical in nature. The kinetics of adsorption tested for first order, pseudo second order models and Elovich’s equation, results showed the adsorption followed the pseudo-second-order model.


Article
Performance Evaluation of a PID and a Fuzzy PID Controllers Designed for Controlling a Simulated Quadcopter Rotational Dynamics Model
تقييم اداء مسيطر تناسبي تكاملي تفاضلي و مسيطر تناسبي تكاملي تفاضلي ضبابي مصممان للتحكم بنموذج للديناميكا الدورانية لمروحية رباعية محاكى رقميا

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Abstract

This work is concerned with designing two types of controllers, a PID and a Fuzzy PID, to be used for flying and stabilizing a quadcopter. The designed controllers have been tuned, tested, and compared using two performance indices which are the Integral Square Error (ISE) and the Integral Absolute Error (IAE), and also some response characteristics like the rise time, overshoot, settling time, and the steady state error. To try and test the controllers, a quadcopter mathematical model has been developed. The model concentrated on the rotational dynamics of the quadcopter, i.e. the roll, pitch, and yaw variables. The work has been simulated with “MATLAB”. To make testing the simulated model and the controllers more realistic, the testing signals have been applied by a user through a joystick interfaced to the computer. The results obtained indicated a general superiority in performance for the Fuzzy PID controller over the PID controller used in this work. This conclusion is based by the following figures: 70%,70%,and 52% lesser ISA for the roll, pitch, and yaw consequently, 70.5%,70.5%,56.4% lesser IAE for the roll, pitch, and yaw consequently, 53%,and 80.6% lesser rise time and settling time for the roll and pitch consequently, and 77% lesser settling time for the yaw. Moreover, the FPID gave zero overshoot versus 18%, 18%, and 25% in the PID case for the roll, pitch, and yaw consequently. Both controllers gave zero steady state error with close rise times for the yaw. This superiority of the FPID controller is gained as the fuzzy part of it continuously and online adapts the parameters of the PID part.


Article
Simulation of Groundwater Movement for Nuclear Research Center at Al-Tuwaitha Area in Baghdad City, Iraq
محاكاة حركة المياه الجوفية لمركز البحوث النووي في منطقة التويثة, مدينة بغداد, العراق

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Abstract

The simulation of groundwater movement has been carried out by using MODFLOW model in order to show the impact of change of water surface elevation of the Tigris river on layers of the aquifer system for Nuclear Research Center at Al-Tuwaitha area, in addition to evaluate the ability of the proposed pumping well to collect groundwater and change the direction of flow at steady-state. The results of the study indicated that there is a good match between the values of groundwater levels that calculated in the model and measured in the field, where mean error is 0.09 m. The study also showed that the increasing of water surface elevation of the Tigris river led to increase in the hydraulic head of observed wells, while the use proposed pumping well reduced the hydraulic head and intercepted the movement of groundwater flow. The flow direction is toward the Tigris river, and the velocity of flow is clear in the third layer identified medium sand which is 0.0015 m/day. The using of the proposed pumping well has changed the direction of groundwater, especially in the area around the well.


Article
Aluminium Matrix Composites Fabricated by Friction Stir Processing A Review
عرض للمواد المركبة ذات الاساس من الالمنيوم والمصنعة بواسطة عملية الخلط الاحتكاكي

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Abstract

Aluminum alloys widely use in production of the automobile and the aerospace because they have low density, attractive mechanical properties with respect to their weight, better corrosion and wear resistance, low thermal coefficient of expansion comparison with traditional metals and alloys. Recently, researchers have shifted from single material to composite materials to reduce weight and cost, improve quality, and high performance in structural materials. Friction stir processing (FSP) has been successfully researched for manufacturing of metal matrix composites (MMCs) and functional graded materials (FGMs), find out new possibilities to chemically change the surfaces. It is shown that the technique of FSP is very promising to modify the microstructure of strengthened metal matrix composite materials. There has the benefit of decline in distortion and flaw of material when FSP uses instead of other manufacturing processes. The aim of the present work is to give a review of technology of (FSP) as a method to produce the aluminium matrix composite, and conclusions of this review will be demonstrated.

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