Muthanna Journal of Engineering and Technology最新文献_第9页

Nonlinear Analysis of Bridge Girders Subjected to Lateral Impact Loading 横向冲击荷载作用下桥梁梁的非线性分析

Muthanna Journal of Engineering and Technology Pub Date : 2017-04-30 DOI: 10.52113/3/eng/mjet/2017-05-01/37-42

A. Atalla, A. M. Hammood

引用次数: 1

The Philosophy of Absence in contemporary Architecture 当代建筑中的缺席哲学

Muthanna Journal of Engineering and Technology Pub Date : 2017-04-30 DOI: 10.52113/3/eng/mjet/2017-05-01/27-36

引用次数: 0

Improvement of Structural Properties for Reinforced Concrete Deep Beam using Silica Fume with Polypropylene Fibers 聚丙烯纤维硅烟改善钢筋混凝土深梁结构性能

Muthanna Journal of Engineering and Technology Pub Date : 2017-04-30 DOI: 10.52113/3/eng/mjet/2017-05-01/01-09

R. Atea

{"title":"Improvement of Structural Properties for Reinforced Concrete Deep Beam using Silica Fume with Polypropylene Fibers","authors":"R. Atea","doi":"10.52113/3/eng/mjet/2017-05-01/01-09","DOIUrl":"https://doi.org/10.52113/3/eng/mjet/2017-05-01/01-09","url":null,"abstract":"The objective of this study is to investigate the effect of silica fume and polypropylene fibers to gather on the mechanical properties of concrete and the improvement on general behaviour for deep reinforced concrete beams containing silica fume and polypropylene fibers. Properties studied include Silica fume content used was (0%, 10% and 20%) by replacement of equal weight of cement in concrete. Polypropylene fibers were added in (0%, 0.20% and 0.40%) by volume fraction of concrete. Totally three deep reinforced concrete beams specimens with cross-sectional dimension of (100X300)mmfor a length of 1000mm were tested. Out of which three beams provisional on the relation of shear span (a) to the active depth (d) .The (a/d) ratio was used (1) with different containing silica fume and polypropylene fibers with differents percentsge of replacement for silica fume and various Polypropylene fibers were addition from volume fraction.The experimental test results improved for toughened properties contain the compressive strength, splitting tensile strength and modulus of elasticity and also enhancement general behaviour for deep reinforced concrete beams when studied the crack patteren, load-deflection and strains.","PeriodicalId":431983,"journal":{"name":"Muthanna Journal of Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128136898","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}

引用次数: 0

The Use of Crushed Brick Waste for The Internal Curing In Cement Mortar 废碎砖在水泥砂浆内养护中的应用

Muthanna Journal of Engineering and Technology Pub Date : 2017-04-30 DOI: 10.52113/3/eng/mjet/2017-05-01/16-21

引用次数: 1

Study of Differential Scanning Calorimetry on Phase Precipitation in Various Heat Treatments of AlZnMgCu Aluminum Alloys 差示扫描量热法研究AlZnMgCu铝合金不同热处理相析出

Muthanna Journal of Engineering and Technology Pub Date : 2017-04-30 DOI: 10.52113/3/eng/mjet/2017-05-01/10-15

H. Naeem

{"title":"Study of Differential Scanning Calorimetry on Phase Precipitation in Various Heat Treatments of AlZnMgCu Aluminum Alloys","authors":"H. Naeem","doi":"10.52113/3/eng/mjet/2017-05-01/10-15","DOIUrl":"https://doi.org/10.52113/3/eng/mjet/2017-05-01/10-15","url":null,"abstract":"Powers compensation of the differential scanning calorimetry (DSC) have been utilized to revealed and analyze the phases of precipitations in the complex quaternary of Zinc (6.7wt. %) _ Magnesium (2.8 wt. %) _ Copper (1.8 wt. %) _Aluminum alloys manufactured by the process of the Semi-Direct Chill Casting. The casted Al-Zn-Mg-Cu alloys slabs were homogenizing at the different temperatures. Firstly under treatment 450°C for 2 hours follow by treatment 470°C for 1 day and then treatment at 480°C for 40 minutes, then all casted samples have quenched in cold water after each step. The treated homogenized Al-Zn-Mg-Cu samples that were underwent the artificial ageing at 120 °C for 1 day, and then retrogression at 180°C for 2400sec. and then reageing at 120°C for 1 day. The outcomes proved that the X-ray diffraction (XRD) analyses confirmed information of the DSC thermal analyses which were obtained through various heat treatments of the three samples AlZnMgCu alloy. The outcomes have explained that the DSC data are helping in understanding the changes the peaks of temperatures as well the enthalpy values for the forming and dissolution the equilibrium phase’s and precipitation compounds within the artificial againg (with the pea-temper) and the Retrograession and Re-Againg-(RRA) treatments were conducting for Al_Zn_Mg_Cu alloy samples.","PeriodicalId":431983,"journal":{"name":"Muthanna Journal of Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134441602","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}

引用次数: 1

Comparison Between the Optimal Application of Variable Structure Controller (VSC) and Power System Stabilizer (PSS) Using Particle Swarm Optimization (PSO) in Improving System Stability 变结构控制器(VSC)与基于粒子群优化(PSO)的电力系统稳定器(PSS)在提高系统稳定性方面的最优应用比较

Muthanna Journal of Engineering and Technology Pub Date : 2017-04-30 DOI: 10.52113/3/eng/mjet/2017-05-01/43-50

引用次数: 0

Studying effect of static concentration for chemical machining on surface roughness and metal removal rate for low carbon steel 研究化学加工静态浓度对低碳钢表面粗糙度和金属去除率的影响

Muthanna Journal of Engineering and Technology Pub Date : 2017-04-30 DOI: 10.52113/3/eng/mjet/2017-05-01/22-26

引用次数: 0

Application of a Hydrodynamic HEC-RAS Model For Shatt Al-Arab River 阿拉伯沙河水动力HEC-RAS模型的应用

Muthanna Journal of Engineering and Technology Pub Date : 2016-12-30 DOI: 10.52113/3/eng/mjet/2016-04-02/11-22

A. Abbas, Abdulmuttaleb Abbas

引用次数: 2

Investigation of Noise Levels Within Al-Muthanna University in Al-Muthanna Province Iraq 伊拉克Al-Muthanna省Al-Muthanna大学内噪声水平调查

Muthanna Journal of Engineering and Technology Pub Date : 2016-06-30 DOI: 10.52113/3/eng/mjet/2016-04-01/01-08

Huda M. Selman

{"title":"Investigation of Noise Levels Within Al-Muthanna University in Al-Muthanna Province Iraq","authors":"Huda M. Selman","doi":"10.52113/3/eng/mjet/2016-04-01/01-08","DOIUrl":"https://doi.org/10.52113/3/eng/mjet/2016-04-01/01-08","url":null,"abstract":"Noise pollution around the Al-Muthanna university in Al-Samawah city was measured to study the effects on the teaching-learning processes and performance of both teachers and students during November and December 2014. Digital Sound Level Meter (model a GM1351 ) was used to measure the noise level, In twelve selected buildings for the study as indoor sites and the park and main door of the university as outdoor sites . The measurements at the buildings were carried out in three different time intervals of the day i.e. in the morning 8:00-10:00am, 10:00-12:00 pm and 12:00-2:00 pm. Noise intensity was also measured in two points at an interval of half hour .After recording of daily measurements of noise level, the hourly average noise level for each point of the building and for the whole buildings were calculated. As well as the total average of noise levels was calculated in order to compare it with the allowable limits of EPA for educational institutions. The maximum noise level was found in college of education (81.8) dBl and the minimum value in college of nursing which was equal(73.3) dBl. The study results show that the rate of noise level in an indoor and outdoor sites is very high and not suitable for teaching-learning processes. Therefore Acts and regulations concerning noise pollution should be strictly adopted.","PeriodicalId":431983,"journal":{"name":"Muthanna Journal of Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126331001","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}

引用次数: 1

Using of Stones in Building the Foundations 在建造地基时使用石头

Muthanna Journal of Engineering and Technology Pub Date : 2016-06-30 DOI: 10.52113/3/eng/mjet/2016-04-01/51-56

H. Y. Aziz

{"title":"Using of Stones in Building the Foundations","authors":"H. Y. Aziz","doi":"10.52113/3/eng/mjet/2016-04-01/51-56","DOIUrl":"https://doi.org/10.52113/3/eng/mjet/2016-04-01/51-56","url":null,"abstract":"The problem of this study is that the building of foundation by stones at the present time leads to develop cracks in the superstructure. Therefore, the solutions and the right manner were suggested for building the stone in the small and big structures. This paper studies using and properties of stones in building of foundations, that the stone is rigid and stiff in the same time very cheap for building, especially in the regions wealthy with stone. The models were taken for analyzing, firstly experimentally in the field site and secondly by Plaxis Program using the Finite Elements with the same properties of the soil and calculate the vertical displacement, vertical strain, factor of safety and bearing capacity. It can be concluded that the using of the reinforced columns in the small foundation in addition to the beam and stones will reduce the vertical displacement and strain to lower values, maintain high value of bearing capacity and increase the factor of safety that makes the structure becomes safer. Also for the big structures like bridges another models were used with higher loadings and the same above parameters were calculated, the stone with special requirements approved to improve and treat the soil parameters even for the big structures.","PeriodicalId":431983,"journal":{"name":"Muthanna Journal of Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131797185","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}

引用次数: 1