Menoufia University, Faculty of Engineering
ERJ. Engineering Research Journal
1110-1180
36
3
2013
07
01
Evaluation Study on Speed Control of dc Series Motor Supplied by Photovoltaic System via Bacterial Foraging
205
215
EN
A. S.
Oshaba
Electronics Research Institute, Power Electronics and Energy Conversions
E. S.
Ali
Electric Power and Machine Department, Faculty of Engineering, Zagazig University, Egypt
10.21608/erjm.2013.67424
<span>This paper presents the design and evaluation of a speed control scheme for a DC series motor</span><br /><span>supplied by Photovoltaic (PV) system. The proposed design problem of speed controller is formulated</span><br /><span>as an optimization problem. Bacteria Foraging Optimization Algorithm (BFOA) is employed to search</span><br /><span>for optimal controller parameters by minimizing the time domain objective function. The performance</span><br /><span>of the proposed technique has been evaluated with respect to load torque variation, ambient</span><br /><span>temperature and radiation. Simulation results have shown the validity of the proposed technique in</span><br /><span>cont ling the speed of DC series motor under different disturbances.</span>
DC Series Motor,Photovoltaic System,Speed Control,PI controller,Bacteria Foraging Optimization Algorithm
https://erjm.journals.ekb.eg/article_67424.html
https://erjm.journals.ekb.eg/article_67424_3c62cd6415b0d14b3f07676d7b0946b9.pdf
Menoufia University, Faculty of Engineering
ERJ. Engineering Research Journal
1110-1180
36
3
2013
07
01
Five-level Inverter Fed Five-phase Induction Motor Drive
217
223
EN
I.
Bedir
Faculty of Engineering - Tanta university - Egypt
Abd El-wahab
Hassan
Faculty of Engineering - Tanta university - Egypt
Essam M.
Rashad
Faculty of Engineering - Tanta university - Egypt
S. A,
Mahmoud
Faculty of Engineering, Shebin El-Kom - Minoufiya university - Egypt
10.21608/erjm.2013.67426
<span>This paper presents simulation and experimental implementation of five-level, five-phase cascaded</span><br /><span>H-bridge inverter. The inverter is controlled by sinusoidal pulse width modulation technique and</span><br /><span>fed five-phase induction motors. The speed of the motor is controlled by varying stator voltage</span><br /><span>with frequency, so as to maintain v/f ratio constant at the rated value. A fuzzy logic controller is</span><br /><span>also considered for controlling the speed. Simulation program using the MATLAB/SIMULINK</span><br /><span>software, for five-phase induction motors controlled by the proposed system is developed.</span><br /><span>Experimental results of the 1.5 Hp of five-phase induction motor show the effectiveness of the</span><br /><span>proposed control scheme.</span>
Multilevel inverter,Fuzzy logic control,Multi-phase Induction Motor
https://erjm.journals.ekb.eg/article_67426.html
https://erjm.journals.ekb.eg/article_67426_bd6a99af84a52231c065ef71ea470d3f.pdf
Menoufia University, Faculty of Engineering
ERJ. Engineering Research Journal
1110-1180
36
3
2013
07
01
PERFORMANCE OF CASCADED H-BRIDGE INVERTER INTEGRATED WITH HFT FOR PV SYSTEM APPLICATIONS
225
231
EN
Mahrous
Ahmed
Aswan Faculty of Engineering, Aswan university, Aswan, Egypt
i.
Taha
Tanta University, Faculty of engineering, Tanta, Egypt
10.21608/erjm.2013.67427
<span>This paper presents a photovoltaic system as a standalone system. The proposed system</span><br /><span>consists of photovoltaic (PV) module, battery energy storage system (BESS), high frequency</span><br /><span>transformer, and multilevel inverter (MLI). The MLI consists of two H-bridge single phase inverter</span><br /><span>per arm (phase) with unequal dc voltages which needs 6 isolated de sources for the conventional</span><br /><span>MLI. The relative values between the upper (auxiliary) inverter dc voltage and the lower H-bridge</span><br /><span>(main) inverter is 1/3 resulting in 9 levels MLI. Each isolated dc source comes from a PV module</span><br /><span>accompany with a BESS. A high frequency transformer (HFT) is proposed in this paper to generate</span><br /><span>the dc bus voltage of the auxiliary inverter from the main inverter dc bus voltage. As a result of that</span><br /><span>the number of isolated dc bus voltages required is reduced by half which is reflected in reducing the</span><br /><span>number of PV required and thus reducing the cost of the overall system. In addition, a natural</span><br /><span>balancing between the main and auxiliary inverters dc bus voltages of each arm will be attained due</span><br /><span>to the HFT turns ratio which result in simplifying the overall control of the whole system. In order to</span><br /><span>reduce the size of the HFT a judicious modulation index (MI) will be chosen. The proposed system</span><br /><span>has been simulated using static inductive load. Analyses and simulation have been proposed to</span><br /><span>validate the proposed control scheme.</span>
MLI,PV,HF Transformer,bidirectional converter,Isolated dc sources
https://erjm.journals.ekb.eg/article_67427.html
https://erjm.journals.ekb.eg/article_67427_d41d8cd98f00b204e9800998ecf8427e.pdf
Menoufia University, Faculty of Engineering
ERJ. Engineering Research Journal
1110-1180
36
3
2013
07
01
Welding of Cylindrical Parts by using Friction Stir Technique
233
245
EN
A.M.
Khourshid
Production Eng., Faculty of Eng., Tanta University
Tareq.s.
ELabiadi
Faculty of Eng., Benghazi University
I.
Sabry
10.21608/erjm.2013.67429
<span>The objective of this work was to investigate the mechanical and metallurgical properties in</span><br /><span>order to demonstrate the feasibility of friction stir welding for joining A16061 and A16063</span><br /><span>aluminum alloys Welding was performed on cylindrical parts with different thickness 2mm and</span><br /><span>3mm, five rotational speeds,485,710,910,1120 and 1400 rpm and a traverse speed 4mm/min was</span><br /><span>applied. The tests were conducted for the study to determine the mechanical properties (maximum</span><br /><span>stress - the percentage of elongation) and hardness measurement along the welded sections using</span><br /><span>the Vickers method, was also studying the crystalline structure of welded joints .The FSW welds</span><br /><span>exhibited many advantages over traditional arc welding techniques.</span>
https://erjm.journals.ekb.eg/article_67429.html
https://erjm.journals.ekb.eg/article_67429_9613c5c07cbb7ca4b4437853ae8ba0f8.pdf
Menoufia University, Faculty of Engineering
ERJ. Engineering Research Journal
1110-1180
36
3
2013
07
01
التوافق بين الهوية وتنمية المجتمعات والتغاير العالمي في المباني الثقافية مباني المتاحف الحديثة
247
257
EN
ناهد أحمد
عمران
مدرس بالاکاديمية الحديثة للهندسة والتکنولوجيا - قسم الهندسة المعمارية
10.21608/erjm.2013.67425
استوعبت مباني المتاحف الکثير من المتغيرات من جرد الحفاظ علي الثقافات الماضية الي التغيير في الشکل والتشکيل والمج مع العمران الحاضر بثقافته، وتعرض الدراسة مفهوم انثروبولوجيا المتاحف واهمية دور المتاحف في تنمية المجتمع الحلي والسياحة الثقافية
تنمية ثقافية,تصميم المتاحف,الهوية,ثقافة العولمة,مدن المعرفة
https://erjm.journals.ekb.eg/article_67425.html
https://erjm.journals.ekb.eg/article_67425_ab9bb6086c5538609cad4eb1552a5cdf.pdf
Menoufia University, Faculty of Engineering
ERJ. Engineering Research Journal
1110-1180
36
3
2013
07
01
الحمامات الشعبية وتطورها في المجتمعات العربية
259
275
EN
أحمد يحيي
إسماعيل
مدرس - قسم العمارة - کلية الفنون الجميلة - جامعة حلوان
10.21608/erjm.2013.67423
اتخذت الحمامات العامة (الحمامات الشعبية) مکانة متميزة في مختلف الحضارات غير ان کل حضارة کانت تضع تعديلات في تصميم هذه الحمامات بما يتناسب مع ظروفها وعاداتها ومعتقداتها کما کانت تختلف في المقياس من حضارة الي اخري ففي الحضارة الرومانية مثلا کانت تصل الي مقياس مدن کاملة وفي الحضارة الاسلامية کانت متداخلة في النسيج العمراني للمدينة بل وکانت تنتشر في الاحياء السکتية الي ان وصل تطور هذه الحمامات الي الشکل الحديث الذي هو عليه الان في هيئة منجعات اسشفائية او مراکز استشفائية
الحمامات العامة,الحمامات الشعبية,حمامات حلوان,الحمامات الرومانية
https://erjm.journals.ekb.eg/article_67423.html
https://erjm.journals.ekb.eg/article_67423_f53e79026c241558abbed0348e8170de.pdf
Menoufia University, Faculty of Engineering
ERJ. Engineering Research Journal
1110-1180
36
3
2013
07
01
(مؤسسات علاج الادمان الحکومية في مصر (دراسة تحليلية
277
286
EN
محمود أحمد
دسوقي
صفاء
عيسي
قسم الهندسة المعمارية - کلية الهندسة - جامعة المنوفية
10.21608/erjm.2013.67428
يتناول البحث دراسة نموذجين من مباني علاج الادمان الحکومية في مصر ومشاکلها التصميمية المختلفة وتأثيرها علي نجاح العملية العلاجية ويقوم بتحليلها والمقارنة ما بينها ومن ثم يستطيع التوصل للنتائج والتوصيات التي من شأنها تحسين هذه الخدمات معماريا.
تصميم,علاج الادمان,مصر الحکومية,تحليل
https://erjm.journals.ekb.eg/article_67428.html
https://erjm.journals.ekb.eg/article_67428_a396195f99993aa573bfde9cdbedb8f7.pdf
Menoufia University, Faculty of Engineering
ERJ. Engineering Research Journal
1110-1180
36
3
2013
07
01
LARGE SCALE PHYSICAL MODEL TO INVESTIGATE THE MECHANICS OF EMBANKMENT EROSION DURING OVERTOPPING FLOW
287
302
EN
Entesar A. S.
EL-Ghorab
Hydraulic Research Institute, National Water Research Centre
Ahmed
Fahmy
Hydraulic Research Institute, National Water Research Centre
M.
Fodda
Hydraulic Research Institute, National Water Research Centre
10.21608/erjm.2013.67430
<br /><span>This paper presents the results of large scale physical model embankment failure</span><br /><span>experiments. The model simulates the failure by overtopping of three embankments</span><br /><span>that are varying in dimensions and soil type. The soil is either homogeneous pure</span><br /><span>sand or mixture of sand, silt and clay. A new measuring technique consists of the</span><br /><span>labeled rod bridge; grids lined and captured instantaneous pictures are utilized to</span><br /><span>monitor the failure. It was used to analyze the morphological evolution during</span><br /><span>embankment failure. The flow pattern and progressive failure of embankment</span><br /><span>overtopping were investigated. The results showed four types of phenomenon</span><br /><span>during embankment failure: erosion; erosion with sliding; erosion with mass failure</span><br /><span>and head cut migration. The results revealed that the recorded time to reach the full</span><br /><span>breach failure in case of mixture materials (sand, silt and clay) is seven times that</span><br /><span>with pure sand. Also, reducing the embankment height to 50% (0.9m), led to</span><br /><span>increase the time to peak discharge 8.4 times that of large one (1.8m). Adding 15%</span><br /><span>clay to pure sand changes soil characteristics to (c and o) soil which makes soil to</span><br /><span>have a critical vertical cut height. Set of dimensionless regression equations are</span><br /><span>developed by using the experimental data. In conclusion, types of embankment</span><br /><span>failure are defined. Adding a percentage of clay (15%) to the pure sand led to the</span><br /><span>maximum remain vertical cut height of about 50% of the calculated critical vertical</span><br /><span>cut height (Z). Bearing in mind the limited number of large scale testes for</span><br /><span>embankment breach in literatures, the set of data could be used for calibration of</span><br /><span>mathematical breach models and provides a reference for the flood risk management</span><br /><span>of embankments.</span>
https://erjm.journals.ekb.eg/article_67430.html
https://erjm.journals.ekb.eg/article_67430_8c9010deb5eb22b9faac6d5a63d95c53.pdf
Menoufia University, Faculty of Engineering
ERJ. Engineering Research Journal
1110-1180
36
3
2013
07
01
INFLUENCE OF USING CONCRETE JACKET ON THE BEHAVIOR OF REPAIRED REINFORCED CONCRETE BEAMS
303
315
EN
Noha M.
Soliman
Civil Engineering Department, Faculty of Engineering, Menoufia University, Egypt
Alaa A.
Bashandy
Civil Engineering Department, Faculty of Engineering, Menoufia University, Egypt
10.21608/erjm.2013.67431
<span>Reinforced concrete jacketing is one of the widely used repairing techniques for beams and</span><br /><span>columns. The aim of this research is to evaluate the efficiency of using concrete jackets using</span><br /><span>different reinforcements and thicknesses. The behavior of repaired reinforced concrete defected</span><br /><span>beams is investigated under flexural effect. The tested beams are preloaded up to 70 and 90% of</span><br /><span>their ultimate capacity then, repaired using concrete jackets. The main variables are thickness of</span><br /><span>concrete jacket (3, 5 cm), diameter of reinforcing steel bars (8, 10 mm) and concrete jacket type.</span><br /><span>The experimental results showed that, repairing using concrete jackets enhances the load capacity</span><br /><span>up to 378%. Increasing jacket thickness enhances the structural performance of the tested beams</span><br /><span>and in the same time increases its weight. It also increases the stiffness compared to the control</span><br /><span>beam and consequently the repaired concrete beams indicated a brittle manner compared to the</span><br /><span>ductile failure of the control beams.</span>
Rehabilitation,Beam,Jacketing,Concrete, reinforced,deterioration
https://erjm.journals.ekb.eg/article_67431.html
https://erjm.journals.ekb.eg/article_67431_bfa10244e1ceb7df4beb4f7d93340cb7.pdf
Menoufia University, Faculty of Engineering
ERJ. Engineering Research Journal
1110-1180
36
3
2013
07
01
Behavior of Recycled Self-Compacting Concrete
317
327
EN
M.M
Kamal
Department of Civil Engineering - Faculty of Engineering- Menoufia University
M. A.
Safan
Department of Civil Engineering - Faculty of Engineering- Menoufia University
Z. A
Etman
Department of Civil Engineering - Faculty of Engineering- Menoufia University
E. A
Eldaboly
Civil Engineer and Postgraduate Fellow
10.21608/erjm.2013.67433
<span>The effect of recycled materials as a recycled aggregate (crushed red brick and crushed ceramic)</span><br /><span>on the fresh and hardened properties of Recycled Self-Compacting Concrete (RSCC) was</span><br /><span>investigated. Recycled materials were used to replace coarse aggregate at different ratios of 25%,</span><br /><span>50%, 75% and 100% to produce RSCC mixes. Twenty one concrete mixes were cast and test to</span><br /><span>fulfill the aim of this paper. This paper aimed at studying the properties of RSCC mixes and</span><br /><span>evaluating the behavior of RSCC beams under flexural loads. Nine tested loading simply</span><br /><span>supported concrete beams were tested in flexure. The fresh properties of RSCC were evaluated</span><br /><span>using slump flow, J-ring and V-funnel tests. Compressive strength, splitting tensile strength and</span><br /><span>flexural strength were performed in order to investigate mechanical properties. The density for</span><br /><span>different mixes was evaluated. The behavior of the tested beams was investigated with special</span><br /><span>attention to the deflection under different stages of loadings, initial cracking, cracking pattern, and</span><br /><span>ultimate load. The average of the compressive strength decreased by 34% and 26% for the mixes</span><br /><span>with crushed red break and ceramics, respectively compared to that of control mix was observed.</span><br /><span>In addition, the density for the mixes with crushed red brick decreased by 14 % compared to that</span><br /><span>of control mix. The obtained results presented the properties of this concrete were expected from a</span><br /><span>structure point of view, and that the recycled coarse aggregates can successfully be used for</span><br /><span>making of SCC.</span>
Self-compacted concrete,Red brick,ceramic,Recycled materials,flexural strength
https://erjm.journals.ekb.eg/article_67433.html
https://erjm.journals.ekb.eg/article_67433_2d7ac06af990fe2265438d85762bae9b.pdf
Menoufia University, Faculty of Engineering
ERJ. Engineering Research Journal
1110-1180
36
3
2013
07
01
Reduction in environmental pollution using rice-husk ash in concrete
329
338
EN
Turki Mesfer
Al-Aboud
Department of Civil Engineering, Faculty of Engineering and Islamic Arccheticture Umm Al-Qura University,
10.21608/erjm.2013.67434
<br /><span>The production of cement as a binding component of concrete is costly, consumes high energy,</span><br /><span>depletes natural resources and emits huge amounts of greenhouse gases (one ton of cement</span><br /><span>production emits about one ton of CO2). Consequently, environmental degradation, serious</span><br /><span>pollution and health hazards associated with cement and concrete industries, have come under</span><br /><span>intense scrutiny from environmentalists and the governments. Developed and some developing</span><br /><span>countries, are already using industrial and agricultural wastes in concrete. These wastes also pose</span><br /><span>several environmental problems. Partial inclusion of waste instead of 100% cement has been found</span><br /><span>to be environmentally safe, stable, durable as well as economical. Rice husk ash (RHA), rich in</span><br /><span>silica content, can be produced from rice husk using appropriate combustion technique for use in</span><br /><span>concrete as a supplementary cementitious material. The present study used rice-husk ash (RHA) as</span><br /><span>a partial replacement of cement in concrete. X-ray diffraction analysis, scanning electron</span><br /><span>microscopic examination, compressive strength (without and with superplasticizers), flexural</span><br /><span>strength, resistance to aggressive chemicals and cost analysis were carried out. Concrete and</span><br /><span>mortars containing 25% RHA as a replacement of cement, exhibited same or better results</span><br /><span>compared to conventional concrete. Moreover, it leads to substantial cost savings not to mention</span><br /><span>benefits to the environment.</span>
Concrete,Rice-husk ash,X-Ray Diffraction,Scanning Electron Microscopy,Compressive strength,Flexural strength. Chloride and sulphate resistance
https://erjm.journals.ekb.eg/article_67434.html
https://erjm.journals.ekb.eg/article_67434_383da2241561650c9b0d6121ee238e43.pdf
Menoufia University, Faculty of Engineering
ERJ. Engineering Research Journal
1110-1180
36
3
2013
07
01
ASSESSING THE BEHAVIOUR OF CONCRETE REINFORCED WITH DIFFERENT POLYPROPYLENE FIBER TYPES
339
349
EN
a M. I
Abu-Khashab
Construction Research Institute, Delta Barrages, Egypt
10.21608/erjm.2013.67435
<span>This research was initiated with the objective of evaluating the effect of different polypropylene</span><br /><span>fibers on the mechanical characteristics of the concrete, experimentally. This was achieved by</span><br /><span>examining the effectiveness of fiber addition in order to improve the concrete mechanical</span><br /><span>behavior. Five types of polypropylene fiber (PPF) were investigated to select an appropriate fiber</span><br /><span>to be added to the concrete mixture based on its purpose. A concrete mixture was designed and its</span><br /><span>different mechanical characteristics were examined. Specimens were tested after curing (i.e. after</span><br /><span>7 and 28 days). Durability tests (i.e. abrasion, plastic/drying shrinkage and temperature</span><br /><span>differences exposure) were investigated. The results indicated that using PPF, randomly, helps to</span><br /><span>bridge and arrest the formed cracks in the concrete under different stresses such as that resulted</span><br /><span>from temperature differences exposure. Most of the tested PPF added to the concrete mixes</span><br /><span>proved its efficiency in improving the concrete abrasion resistance, controlling plastic so as drying</span><br /><span>shrinkage cracking as well as reducing it and enhancing its distribution along the concrete surface.</span><br /><span>Using PPF-1/PPF-2 could improve the abrasion resistance up to 35%. Also, the plastic shrinkage</span><br /><span>strain is minimized by 32% to 61% compared to its original value.</span>
Polypropylene Fibers (PPF),inclusion,Durability,Abrasion,Plastic,Drying,Shrinkage,resistance,Cracking,Tensile Properties,
https://erjm.journals.ekb.eg/article_67435.html
https://erjm.journals.ekb.eg/article_67435_8841af1cc222f75d6127e47714b158d6.pdf