Journal of University of Babylon for Engineering Sciences最新文献_第4页

Developing Laboratory Performance Models for Thin Asphalt Overlay Mixtures 开发薄沥青铺层混合料的实验室性能模型

Journal of University of Babylon for Engineering Sciences Pub Date : 2019-02-11 DOI: 10.29196/JUBES.V27I1.2186

M. Zeki, Shakir Al-busaltan

{"title":"Developing Laboratory Performance Models for Thin Asphalt Overlay Mixtures","authors":"M. Zeki, Shakir Al-busaltan","doi":"10.29196/JUBES.V27I1.2186","DOIUrl":"https://doi.org/10.29196/JUBES.V27I1.2186","url":null,"abstract":"Statistical modeling is utilized effectively to development relation/s between the dependent variables and independent variables. In other words, it describes how one or more random variables are related to one more other variables. Building verified models can help in predicting performance characteristics, and saving time and money. This study aims to present a statistical models which help to understand the significance of the different parameters in characterizing the performance of the Thin Asphalt Overlay (TAO). The experimental program included: design the thin asphalt overlay mixtures using one gradation type (9.5 Nominal Maximum Aggregate Size NMAS), three filler types (conventional mineral filler, Ordinary Portland Cement, and Quick lime), and five percentages of asphalt content to identify the optimum asphalt content. Then, Styrene Butadiene Styrene (SBS) modified polymer binder was introduced for performance enhancement. Performance tests were used to evaluate TAO mixture in term of some main namely, volumetric, mechanical, and durability properties are (bulk density, indirect tensile strength and tensile strength ratio). Statistical Product and Service Solutions (SPSS) software (Version 24) was used as a tool for models building. To find the most accurate statistical models, linear and nonlinear regression was achieved. This study demonstrates that the using statistical modeling is achievable and offer a vital tool to describe the characteristics and performance of the TAO mixture in term volumetric, mechanical and durability properties.","PeriodicalId":311103,"journal":{"name":"Journal of University of Babylon for Engineering Sciences","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121423528","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

Modren Patterns of Residential Units and their Impact in Deformation of the Morphoogy of the Rural Settlements in Iraq 伊拉克农村居民点形态变形中的现代居住单元形态及其影响

Journal of University of Babylon for Engineering Sciences Pub Date : 2019-02-11 DOI: 10.29196/JUBES.V27I1.2003

Miged Abbas Abd Al-Naggar, A. I. Ibrahim, Mahmood Chabuk

引用次数: 2

Prevent Intravenous Therapy (IV) Contamination by Addition of Magnesium Oxide Nanoparticles to Silicone Rubber 通过在硅橡胶中添加氧化镁纳米颗粒来防止静脉治疗(IV)污染

Journal of University of Babylon for Engineering Sciences Pub Date : 2019-02-11 DOI: 10.29196/jubes.v27i1.2195

A. Braihi, J. Ahmed, Rami Sattar Jabbar

引用次数: 1

Failure of Zoned Earth Dam (An analysis of earth dam break) 分区土坝破坏(土坝溃坝分析)

Journal of University of Babylon for Engineering Sciences Pub Date : 2019-02-11 DOI: 10.29196/jubes.v27i1.2171

A. Al-Shukur, Ranya Mahmoud

引用次数: 3

Experimental Investigation of Using PET Wastes as Tension Bars in Reinforced Concrete Beams PET废料作钢筋混凝土梁拉筋的试验研究

Journal of University of Babylon for Engineering Sciences Pub Date : 2019-02-11 DOI: 10.29196/JUBES.V27I1.1993

A. Dawood, H. Adnan

引用次数: 4

Statistical Modeling for the Characteristics of Open Graded Friction Course Asphalt 开敞级配摩擦路面沥青特性的统计建模

Journal of University of Babylon for Engineering Sciences Pub Date : 2019-02-11 DOI: 10.29196/jubes.v27i1.2176

Ola Al-Jawad, Shakir Al-Busaltan

{"title":"Statistical Modeling for the Characteristics of Open Graded Friction Course Asphalt","authors":"Ola Al-Jawad, Shakir Al-Busaltan","doi":"10.29196/jubes.v27i1.2176","DOIUrl":"https://doi.org/10.29196/jubes.v27i1.2176","url":null,"abstract":"An open-graded friction course (OGFC) is a special type surface layer of traditional Dense Graded Hot Mix Asphalts (DGHMA) pavement that is increasingly being used around the world due to its various benefits, such as, frictional, safety and environmental, etc. In this research, selective laboratory OGFC properties were statistically modeled depends on mix design inputs for two purposes or aims; mix inputs significant and prediction the OGFC properties according mix inputs. Principally, Indirect Tensile Strength (ITS), water sensitivity (TSR), and permeability (K) were selected from mechanical, durability, and volumetric properties, respectively as an output property; they represent the dependent variables for each model. While, fillers as conventional mineral filler or Ordinary Portland Cement (CMF, or OPC), binder content (BC), and polymer content (SBS) are represented inputs or the independent variables for all models. The generated models offered a vital achievable tool for prediction (e.g., their R² are 0.781, 0.82 1and 0.820, respectively, for the mentioned model’s properties), also it helped to scale the significant of each independent variable (e.g., filler type significantly affect water sensitivity properties, its correlation was 0.752). This study reveals that the statistical modeling is achievable and offers a dynamic tool to describe the characteristics and performance of OGFC mixture in term volumetric, mechanical and durability properties.","PeriodicalId":311103,"journal":{"name":"Journal of University of Babylon for Engineering Sciences","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114466018","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: 3

Numerical Analysis of Contact Area under Slippage Conditions 滑移条件下接触面积的数值分析

Journal of University of Babylon for Engineering Sciences Pub Date : 2019-02-11 DOI: 10.29196/JUBES.V27I1.2004

M. Fakhri, Ihsan A. Baqer

{"title":"Numerical Analysis of Contact Area under Slippage Conditions","authors":"M. Fakhri, Ihsan A. Baqer","doi":"10.29196/JUBES.V27I1.2004","DOIUrl":"https://doi.org/10.29196/JUBES.V27I1.2004","url":null,"abstract":" In the present paper, the contact of area, which is produced between a pair of bodies (flat surface and hemi-cylindrical shape), has been studied under the effect of slippage occurrence, where it represents one of the important problems in the mechanical engineering, especially in robotic design. Many parameters have been studied, like frictional forces, equivalent stresses, friction coefficient, and contact area of deformation. The behavior of these parameters has been monitored during the slippage that is generated between the flat surface made from cast alloy steel and the other part made from rubber. The finite element method (FEM) with SOLIDWORKS software was used to simulate this contact area under the slippage effect. The results of the simulation showed a significant behavior, particularly at the beginning of slippage and the stage of (stick-slip) phenomena, in other words, the simulation outputs indicated that the slippage influence has an important behavior, especially when the phenomena of both slippage and stick-slip stage start to occur. These analyses are intended to understand how the contact area affected to design measures to prevent the slippage occurrence and the damage in contacted bodies.","PeriodicalId":311103,"journal":{"name":"Journal of University of Babylon for Engineering Sciences","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124284956","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 Robust Stream Cipher for Securing Data in the Smartphones 智能手机数据安全的鲁棒流密码

Journal of University of Babylon for Engineering Sciences Pub Date : 2019-01-31 DOI: 10.29196/jubes.v27i1.1981

Abdullah S. Abid, M. Zaiter, T. Atia

{"title":"The Robust Stream Cipher for Securing Data in the Smartphones","authors":"Abdullah S. Abid, M. Zaiter, T. Atia","doi":"10.29196/jubes.v27i1.1981","DOIUrl":"https://doi.org/10.29196/jubes.v27i1.1981","url":null,"abstract":"With the development of network and communication systems in large areas in the world, this leads to increase security problems in transmission of data such as data leakage, modification, unauthorized access, and attacks. There are many types of techniques that are used to prevent these problems and protect data. One of these techniques is a stream cipher which considered the strongest and fastest method used in encryption and decryption process. In this study presented a new design for the stream cipher to protect mobile data. The strength of stream cipher depends on it is' key. There are several methods to generate key. We used three types of generator. Then, it used the combiner to convert them into a nonlinear Boolean function in order to make the generator key more secure. To implement a new generator key by using these three kinds, we used four LFSRs and one of NLFSRs or FCSRs to produce five variables Boolean function. These variables will be as an input to the combiner function. Finally, we tested the generator and submitted it to the randomness tests that is publicly available in the National Institute of Standards and Technology (NIST).","PeriodicalId":311103,"journal":{"name":"Journal of University of Babylon for Engineering Sciences","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115018018","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

Energy and Exergy Performance Calculation of Solar Photovoltaic/ Thermal Hybrid System under the Baghdad Environment 巴格达环境下太阳能光伏/热混合系统能量与火用性能计算

Journal of University of Babylon for Engineering Sciences Pub Date : 2019-01-28 DOI: 10.29196/JUBES.V27I1.1976

D. G. Mutasher, M. F. Mohammed, Zaid Salman Obaid

{"title":"Energy and Exergy Performance Calculation of Solar Photovoltaic/ Thermal Hybrid System under the Baghdad Environment","authors":"D. G. Mutasher, M. F. Mohammed, Zaid Salman Obaid","doi":"10.29196/JUBES.V27I1.1976","DOIUrl":"https://doi.org/10.29196/JUBES.V27I1.1976","url":null,"abstract":"A combined system with photovoltaic panel modules, which extracts heat from water or air and produces thermal and electrical energy which is called a solar photovoltaic or solar thermal photovoltaic thermal (PV/T) system. A way to enhance the electrical efficiency of the PV module is by diminishing the temperature at which the module is working, i.e. by extracting thermal energy. The design of the solar Photovoltaic/Thermal provides certain advantages. When the temperature is increased 1°C, the photoelectric efficiency decrease by 0.5%. This work is principally aimed to clarify the effectiveness by means of the exergy generated in a PV/T hybrid water module, a photovoltaic thermal module, generating thermal and electrical energy. Were determined the energy, exergy and the efficiency of the power conversion for a certain amount of days in function of the solar intensity, the temperature of the module and environmental temperature. During the hours 9:00 am to 3:00 pm, the efficiencies of exergy and power conversion varies according to the following values, between 2.16 - 12.27% for the exergy efficiency and between 5.2 - 11.2% for the power conversion efficiency as well as, the energy efficiency varies between 6.89 – 14.9%. The temperature of the photovoltaic module has a great impact on the electrical, thermal and exergy efficiencies. Moreover, these efficiencies can be enhanced by removing energy in form of heat from the surface of the photovoltaic module.","PeriodicalId":311103,"journal":{"name":"Journal of University of Babylon for Engineering Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131135458","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

The Effecting of Physical Properties of Inorganic Fillers on Swelling Rate of Rubber Compound: A review Study 无机填料的物理性质对橡胶胶料膨胀率影响的研究综述

Journal of University of Babylon for Engineering Sciences Pub Date : 2019-01-28 DOI: 10.29196/JUBES.V27I1.1973

S. Habeeb, Z. Alobad, M. Albozahid

引用次数: 5