AL Rafdain Engineering Journal最新文献

{"title":"Design and Modeling of Speed Sensorless Control of DC Motor Drive System","authors":"R. Antar, A. Allu","doi":"10.33899/RENGJ.2014.101020","DOIUrl":"https://doi.org/10.33899/RENGJ.2014.101020","url":null,"abstract":"","PeriodicalId":339890,"journal":{"name":"AL Rafdain Engineering Journal","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123089412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Different Sustainable Rainfall on the Peak Flow","authors":"M. Mohammad, Sahar Sameer Younus","doi":"10.33899/rengj.2014.101001","DOIUrl":"https://doi.org/10.33899/rengj.2014.101001","url":null,"abstract":"Rainfall is the main source of normal and flood surface flow. The storm intensity and sustainability in addition to the watershed properties soil type and land use have a direct effect on the peak flow. In the first stage of this research the TR-20 model and HEC-1 model based on both SCS method and Snyder method operating under watershed modeling system (WMS). The models were calibrated based on a number measured hydrograph for Khashban which is one of sub-basin of Alkhoser seasonal river near Mosul city, and Solak in SinjarRepublic of Iraq. The comparison between the two model based on Nash model efficiency E%, determination coefficient (r) and the t-test values for the measured on predicted value of peak flow, time of peak flow and runoff volume. The result showed that TR-20 model is the best. In the next stage, the TR-20 model was applied for the two watershed for different value of rainfall intensity, duration, and curve number for soil conservation service (SCS) method that reflect the effect of soil type, initial water content, land use and plant cover. The aim is to obtain the peak flow the watershed for different value of consider variables to an equation of peak flow for different values of rainfall duration.","PeriodicalId":339890,"journal":{"name":"AL Rafdain Engineering Journal","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134408033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of Performance of Combined Gas Units Using Steam Injection Technique","authors":"A. Haboo, S. Ibrahim","doi":"10.33899/RENGJ.2014.101006","DOIUrl":"https://doi.org/10.33899/RENGJ.2014.101006","url":null,"abstract":"","PeriodicalId":339890,"journal":{"name":"AL Rafdain Engineering Journal","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113971886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling and Validating the Optimal Routes of a Sensor Network Using the Electrostatic Field Equations","authors":"A. Jabbar, M. H. Mohammed","doi":"10.33899/RENGJ.2014.101019","DOIUrl":"https://doi.org/10.33899/RENGJ.2014.101019","url":null,"abstract":"In this paper, the analogy between the optimal routes within a sensor network and the electrostatic field lines is utilized successfully. In other words, partial differential equations similar to those of the electrostatic field theory are solved using Finite Difference Method (FDM) to find the optimal routes of the network. For the purpose of validation, an Opnet program based on the generated optimal routes is written to find the throughput and delay of the sensor network, a similar program is then applied to some arbitrary routing scenarios. The results show that the throughput and delay performance of the proposed method is better than that of the chosen arbitrary routing scenarios. It is also found from the results that the throughput of some scenarios is 50 % lower than that of the proposed method.","PeriodicalId":339890,"journal":{"name":"AL Rafdain Engineering Journal","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133879761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanistic properties of the unaged and aged DGAMs","authors":"A. Al-Hadidy, M. Abdullah","doi":"10.33899/rengj.2014.101016","DOIUrl":"https://doi.org/10.33899/rengj.2014.101016","url":null,"abstract":"Al-Hadidy A.I. Rashed Abdullah M. Lecturer of Civil Engineering Department, MSc. Student, Civil Engineering Department University of Mosul, Mosul/Iraq, University of Mosul, Mosul/Iraq E-mail address abd_et76@yahoo.com. Tel. +9647710736289 , Abstract Short and long term aging were conducted on the dense graded asphalt mixtures (DGAMs) containing 40-50 penetration grade asphalt cement binders. The short term oven aging (STOA) was conducted on loose mixtures at temperature of 135 C for four hours and at temperature of 154 C for two hours, whereas, the long term oven aging (LTOA) was conducted at temperature of 85 C and at two periods of time between four and eight days. The performance tests includes: Marshall properties, indirect tensile strength at 25 and 60C, compressive strength at 25 and 60C, flexural strength at 0 and -10C, cohesion at 60C, tensile strength ratio, and index of retained strength were carried out on unaged and aged DGAM. A mechanistic-empirical design approach using BISAR program was adopted for estimating the improvement in service life of the pavement or reduction in thickness of DGAM and base layer for the same service life due to the aging of DGAM. The results showed that the STOA and LTOA increases: (1) resistance of DGAM against permanent deformation at high temperatures; (2) resistance to stripping phenomenon; (3) flexural strength at low temperatures; (4) traffic benefit ratio between 10 and 20%; and (5) reduces the thickness of the surface layer between 8 and 14%; and (6) the base thickness reduces between 35% and 55%.","PeriodicalId":339890,"journal":{"name":"AL Rafdain Engineering Journal","volume":"203 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131735005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of steel fibres on punching shear strength of flat slabs self compacting concrete","authors":"J. R. Al-Feel, Asmahan Mahmood Sultan","doi":"10.33899/rengj.2014.101499","DOIUrl":"https://doi.org/10.33899/rengj.2014.101499","url":null,"abstract":"Flat slabs are the slab without beam so it save level of the floor. The punching shear caused failure around the column area under applied load on the column, to reduce this failure shear reinforcement were used but it is not easy practically especially for low slab thickness, it can be used steel fibres in the concrete mix to increase the punching shear strength. The aim of the research to study the punching shear of flat slab of self compacting concrete ,this type of concrete used widely because it is environmental friendly. The main parameters are the reinforcement of the slab, two percent were taken with different volume percent of steel fibre (0,0.4,0.8,1.2)%.The main results obtained that the punching shear strength increased with the volume percent of fiber and steel reinforcement, it increased about 27.95% , 21.4% for slabs with reinforcement ratio =1.4%, =1.8% respectively for 1.2% fibre, and the energy absorption increased about 107% for slab with 1.2% fibre and =1.8% compared with slab without fibre. The results show also increased in ductility as the fibre content increase and the failure perimeter of the slabs is approximately circular shape and the failure perimeter increase as the fibre content increased. :ملتسأ 28 – 6 2013 :لبق 13 – 10 2013 Al-Rafidain Engineering Vol.22 No. 4 May 2014","PeriodicalId":339890,"journal":{"name":"AL Rafdain Engineering Journal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116963878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prediction Of Onset Rain at Tal-Abta Area- Nineveh Governorate","authors":"A. Hachum, Zahraa Younis","doi":"10.33899/rengj.2014.101534","DOIUrl":"https://doi.org/10.33899/rengj.2014.101534","url":null,"abstract":"The present research aims to identify the date of the start of the rainfall season (Onset Rainfall) at TelAbta area western of the province of Nineveh. The study relied on data for daily rainfall, mean maximum and minimum monthly temperatures, mean monthly relative humidity, and wind speed at 2 m height for the period (1996 to 2010). The study involved four models; three already available in the literature and one is developed in this study. The developed model depends on the principles of water balance in the top soil layer in the field. The previously proposed models depend on some sort of statistical analysis of the daily rainfall. A computer program using Microsoft Excel code is developed for each model. The results revealed that the proposed (developed) model is the most suitable one for the dry areas suffering rainfall shortage. The performance of the second and third model was very close to that of the proposed model. The fourth model, however, gave results that are very much different and far from the other three models. We recommend not to adapt Model 4 at all. Models 2 and 3 may be used for practical and quick applications. However, the proposed model (Model 1) stays the best and most accurate because it depends on sound scientific and realistic bases.","PeriodicalId":339890,"journal":{"name":"AL Rafdain Engineering Journal","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126869310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Particle Size on Some Mechanical Properties of Functionally Graded Polymeric Matrix Composite Produced by Centrifugal Casting","authors":"A. Khidhir, A. A. Abdullah","doi":"10.33899/rengj.2014.101536","DOIUrl":"https://doi.org/10.33899/rengj.2014.101536","url":null,"abstract":"In this research a functionally graded polymeric composites (FGPCs) were produced using centrifugal casting method . These composites were fabricated from unsaturated polyester resin as a matrix reinforced with silicon carbide particles (SiCp) of different particle size (75,106,150 μm) and ( 6 vol%)bulk volume fraction, using (600 RPM) mold rotational speeds . The aim of the present research was to study the effect of (SiCp)particle size on local values of volume fraction ,hardness and Young modulus at specific points along the graded samples. Hardness was measured at these points then graded samples were cut to eight portions . Density , volume fraction were calculated, then standard homogenous samples of constant but different volume fractions were manufactured. Results show that local values of volume fraction, hardness and young modulus decreased in nearby positions of the center of rotation and increased in positions far away from the center of rotation.","PeriodicalId":339890,"journal":{"name":"AL Rafdain Engineering Journal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123845170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and Analysis of A High Resuluation Navigation System for The Intillegent Transportation System","authors":"A. Salih, Q. Ali","doi":"10.33899/rengj.2014.101504","DOIUrl":"https://doi.org/10.33899/rengj.2014.101504","url":null,"abstract":"This paper suggests an information gathering and monitoring system designed for vehicular adhoc networks(VANETs) and that implemented in a large area. The suggested infrastructure consists of low cost wireless sensors covering certain areas and connected to “the monitoring and control center” through a master node, the study is divided into four phases: the first phase discusses the information gathering process in vehicles and sensors level, the second phase discusses how to send the brief road traffic information to the master node. This process is based on the concepts of the summarization and aggregation and study the effect of using one or two channels for that purpose, the third phase focuses on the information transportation between the master nodes until it reaches to “the monitoring and control center”, The mechanism of the information transportation in this phase is proposed to be in an ad-hoc manner using four adhoc protocols Ad-hoc On Demand Distance Vector Routing Protocol AODV, Dynamic Source routing DSR, Optimized Link State Routing Protocol OLSR and Temporally-Ordered Routing Algorithm Protocol TORA. The best protocol will be selected according to its data delivery, latency and average throughput on the radio channel and the fourth phase deals with dissemination of the gathered information to the vehicles. The proposed system is designed and simulated using “OPNET” package. The results indicate the ability of applying real time and high resolution monitoring system using these techniques. :ملتسأ 17 – 11 2013 :لبق 6 – 3 – 2013 Al-Rafidain Engineering Vol.22 No. 4 May 2014 00 1 . :ةمدقملا (ةيكلسلالا ةيلحملا تاكبشلا يف ةثيدحلا تاروطتلا Wireless Local Area Network WLAN عون روهظ ىلا تدأ ) تاكبشلا نم ديدج لثم ـلا تاكبشو تابكرملا تاكبش Ad-hoc (تابكرملل Vehicular Ad-Hoc Networks Vanets ) [ 1 ] ـلا ةكبش . Ad-hoc (تابكرملل VANET ـلا تاكبش لاكشأ نم لكش يه ) Ad-hoc ةزهجلأل (ةلوجتملا Mobile Ad-Hoc Networks MANETs ميظنتلا ةيتاذ ةيعيزوت تاكبش يهو ) [ 2 ] تابكرملا تاكبش . ـلا تاكبشو VANETs تاكبش ىلع باكرلاو نيقئاسلل ةحارلاو ةملاسلا زيزعتل ةديدج ةمظنأ ريوطتل ةيتحت ةينب رفوت نم ءزجك هريوطت مت تاكبشلا نم عونلا اذه .ةيكلسلالا تلااصتلاا ةزهجأب ةزهجملاو ةلقنتملا تابكرملا نيب لكشتت ،قرطلا لا ةمظنأ ت ـلا ةيكذلا لقن ITS (رومطملا رتويبمكلا نيب لماكتلا .لقنلا ةمظنأ ءادأ نيسحتل Embedded Computers ،) ( ةحلاملا ماظنو ،راعشتسلاا ةزهجأو GPS خلاو ) لك ،ةيكذلا تايمزراوخلا عم ةيكلسلالا تلااصتلاا ةزهجأو ،ةيمقرلا طئار ةمظنلأا هذه عيمج لماكتو ،قرطلا ىلع ةملاسلا نيسحتل تاقيبطتلا نم عاونأ ةدع ريوطت ىلع تدعاس تايناكملاا هذه لقنلا فورظ لثمت يتلا تامولعملا .يقيقحلا نمزلاب تامولعملا ىلع لوصحلا يف نيقئاسلا دعاست دعاست قيرطلل ةيلاحلا دوقولا كلاهتسا طبضو تقولا ريفوت يلاتلاب ،تاماحدزلاا لكاشم لحل ةديدج قرط داجيا كلذكو ،ةدايقلا ليهست ىلع [ 3 ] ، ىلإ ةفاضلإاب ا نيسحت تاكبشو تابكرملا تاكبش يف ةملاسلا لثمت لا يتلا ىرخأ تاقيبطت معد اضيأ نكمي .ةملاسل ـلا VANET ( ةمدخلا ةدوج نامض بلطتت يتلاو Quality of Service QoS تاهويرانيس نم ناعون كانه .) (تابكرملا تلااصتا :يهو تابكرملا تاكبش يف تل","PeriodicalId":339890,"journal":{"name":"AL Rafdain Engineering Journal","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121445997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rapid Design and Test of Embedded Control Systems Using LABVIEW-FPGA Tool","authors":"M. Al-Greer, M. Mohammad","doi":"10.33899/RENGJ.2014.100885","DOIUrl":"https://doi.org/10.33899/RENGJ.2014.100885","url":null,"abstract":"Hardware-description Language (HDL) is typically used to synthesise the digital hardware of the control systems. Importantly, this requires a deep knowledge in digital hardware design; howeverthis is not essential for the design of the real time control systems. From this prospective, there is a great interest to employ a modern environment tool to simulate, design, validate and to rapidly implement the hardware to the target of the application. For this reason, this paper aims to presentthe methodology and effectiveness of using the LABVIEW-FPGA toolin embedded system design of digital control algorithms. As the model of the control system has been already simulated using the LABVIEW environment, therefore this will shorten the time of hardware implementation, where the designed control algorithm will directly translate into hardware resources by using LABVIEW-FPGA module. The methodology of hardware digital controller design is clearly explained using LABVIEW-FPGA modulebased SPARTAN-3EFPGA from Xilinx. The prototyped temperature control system using (CI-53003) is accommodatedas one of the examplesto demonstrate the embedded hardware design of digital control system. Experimental results clearly show the successful hardware implementation of the designed algorithm.","PeriodicalId":339890,"journal":{"name":"AL Rafdain Engineering Journal","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133907117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}