Iraqi Journal for Mechanical and Materials Engineering最新文献_第6页

EVALUATION THE EFFECT OF PRODUCTION CONDITIONS ON THE QUALITY OF CONCRETE BY USING CONTROL CHARTS 用控制图评价生产条件对混凝土质量的影响

Iraqi Journal for Mechanical and Materials Engineering Pub Date : 2019-05-26 DOI: 10.32852/iqjfmme.v19i2.324

Aqil A Husein, M. Imran

引用次数: 0

DEVELOPMENT DESIRED PROPERTIES OF POLYSTYRENE NANO COMPOSITES BY ADDING POLYMERIC MODIFIERS 通过添加高分子改性剂来开发聚苯乙烯纳米复合材料所需的性能

Iraqi Journal for Mechanical and Materials Engineering Pub Date : 2019-05-26 DOI: 10.32852/IQJFMME.V19I2.319

S. Salih

{"title":"DEVELOPMENT DESIRED PROPERTIES OF POLYSTYRENE NANO COMPOSITES BY ADDING POLYMERIC MODIFIERS","authors":"S. Salih","doi":"10.32852/IQJFMME.V19I2.319","DOIUrl":"https://doi.org/10.32852/IQJFMME.V19I2.319","url":null,"abstract":"The introduction of polymeric blend-based nanomaterials has encouraged the developmentof flexible nanocomposites for structural applications in need of superior mechanical,performance. In current research, three groups of polystyrene blend-based nanocompositessamples were fabricated by melting technique using a twin-screw extruder. These samplesconsist of polymer blend (polystyrene (PS): 1% copolymer (polystyrene (PS)-co- maleicanhydride (MA)): 3%ABS) as a matrix material, was strengthen by three different type ofpowders in nanometer size (silica (SiO2), cement kiln dust (CKD) and Fly ash (FA))individually, with selected weight ratio (0, 0.2, 0.4, 0.6 & 0.8 wt. %) for each of them.Experimental investigation was carried out for tensile properties and fatigue strength besidesFTIR test and morphology analyzing of fracture surfaces by SEM. The results showed thattensile strength values and modulus of elasticity increased as the nanoparticle content incomposite increased, but according to specific percentages of nanoparticle content in thecomposites samples, for three groups of the prepared nanocomposites samples. Moreover,the fatigue test revealed the super-improvement in the fatigue properties of the selectedhybrid nanocomposites samples, as compared with neat polystyrene and polymer blend (PS:1% (PS-co-MA): 3% ABS) and fatigue limit was apparent for all types of hybridnanocomposites materials produced in this work. Morphology of the fracture surface wasshowed a homogeneous structure formation for optimal samples of each group ofcomposites, indicating a good compatibility between the component materials of polymerblend and the reinforcement nanoparticles.","PeriodicalId":31812,"journal":{"name":"Iraqi Journal for Mechanical and Materials Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49223298","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

THE ELASTIC BUCKLING BEHAVIOR OF (5056-H18)ALALLOY COLUMNS UNDER VARIABLE LOAD （5056-H18）铝合金柱在变荷载作用下的弹性屈曲行为

Iraqi Journal for Mechanical and Materials Engineering Pub Date : 2019-05-26 DOI: 10.32852/IQJFMME.V19I2.317

A. Khenyab, Hussein F Ajaj, Rawa A. Helal

引用次数: 1

NUMERICAL INVESTIGATION OF THE INFLUENCE OF PUNCH TIP RADIUS AND INTERPOLATOR TYPE IN MULTI-POINT FORMING 多点成形中冲头半径和插补器类型影响的数值研究

Iraqi Journal for Mechanical and Materials Engineering Pub Date : 2019-05-26 DOI: 10.32852/IQJFMME.V19I2.321

A. Kadhim, Ragad Aziz Neama

引用次数: 0

USING HYDROXYAPATITE POWDER (HAP) IN COATING OF STAINLESS-STEEL SUBSTRATE FOR BIO-APPLIATION (A REVIEW) 羟基磷灰石粉末(hap)在不锈钢生物基涂层中的应用(综述)

Iraqi Journal for Mechanical and Materials Engineering Pub Date : 2019-05-26 DOI: 10.32852/IQJFMME.V19I2.325

N. S. Radhi

引用次数: 0

STUDY OF ADSORPTION OF THE BLUE DYE OF INDUSTRIAL WASTE WATER USING POMEGRANATE PEEL 石榴皮吸附工业废水中蓝色染料的研究

Iraqi Journal for Mechanical and Materials Engineering Pub Date : 2019-05-26 DOI: 10.32852/IQJFMME.V19I2.327

Wissam I Tayeh

引用次数: 0

EXPERIMENTAL INVESTIGATION ON ELECTRICAL PROPERTIES AND WEAR RATE OF ALUMINUM MATRIX NANOCOMPOSITE (AMNC) OF AA7100/Al2O3 AA7100/Al2O3铝基纳米复合材料(AMNC)电学性能及磨损率的实验研究

Iraqi Journal for Mechanical and Materials Engineering Pub Date : 2019-05-26 DOI: 10.32852/IQJFMME.V19I2.323

Athraa Sabeeh Hasan, M. Oudah, S. Faraj, H. Al-alkawi

引用次数: 1

SOME PROPERTIES OF BIOMEDICAL Ti6Al4V ALLOY IN DIFFERENT SOLUTIONS 生物医用Ti6Al4V合金在不同溶液中的某些性能

Iraqi Journal for Mechanical and Materials Engineering Pub Date : 2019-05-25 DOI: 10.32852/IQJFMME.V19I2.312

J. M. Salman, Mohammad L Aziz

{"title":"SOME PROPERTIES OF BIOMEDICAL Ti6Al4V ALLOY IN DIFFERENT SOLUTIONS","authors":"J. M. Salman, Mohammad L Aziz","doi":"10.32852/IQJFMME.V19I2.312","DOIUrl":"https://doi.org/10.32852/IQJFMME.V19I2.312","url":null,"abstract":" The aim of the present investigation is to study the effect of different simulated solutions onwear behavior, chemical properties and ion release of Ti-6Al-4V alloy which used in humanbody. For this purpose three solutions have been used (Hank's solution, 0.9NaCl andartificial saliva). The corrosion properties of Ti-6Al-4V implant alloy were examined at37ºC by using electrochemical techniques, such as the potentiodynamic method and opencircuit potential (OCP). The electrochemical corrosion characteristics of Ti-6Al-4V implantalloys in three biological solutions were measured in terms of the corrosion potential (Ecorr)and the corrosion current density (icorr ).Wear behavior was investigated by using pin-ondisctribometers at human temperature under different loads (10,15,20)N. The wear testconsisted of measuring the weight loss of samples. The metal ion release of base andalloying element by immersed specimens into various solutions for 7 days (168 hours) at37ºC. The result found that the Ti6Al4V implant alloy in three biological solutions exhibiteda characteristic of a good behavior. The superior corrosion resistance these alloy whichcurrent density measured in (nA/cm2). The weight loss of samples by wear test increase withincrease load and time. After applied heat treatment, about 40% enhancement in the wearbehavior of alloy. The quantity of Al element metal release of implant alloy with variationfluids which increase with decrease the value of pH and little amount of vanadium elementin hank's solution.","PeriodicalId":31812,"journal":{"name":"Iraqi Journal for Mechanical and Materials Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43802176","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

EFFECT OF LUBRICANT TEMPERATURE ON THE DYNAMIC AND STABILITY BEHAVIOR OF NANO-LUBRICATED JOURNAL BEARING 润滑剂温度对纳米润滑滑动轴承动态稳定性能的影响

Iraqi Journal for Mechanical and Materials Engineering Pub Date : 2019-03-08 DOI: 10.32852/IQJFMME.V19I1.264

B. Abass, Zainab S. Hamzah

{"title":"EFFECT OF LUBRICANT TEMPERATURE ON THE DYNAMIC AND STABILITY BEHAVIOR OF NANO-LUBRICATED JOURNAL BEARING","authors":"B. Abass, Zainab S. Hamzah","doi":"10.32852/IQJFMME.V19I1.264","DOIUrl":"https://doi.org/10.32852/IQJFMME.V19I1.264","url":null,"abstract":"The effects of lubricant temperature on the dynamic behaviour of Nano-lubricated finite length journal bearings has been investigated in the present work. Modified time dependent Reynolds equation include the effect of oil film temperature was perturbed in order to calculate the eight dynamic coefficients (four stiffness, and four damping) required to evaluate the dynamic characteristics of the journal bearing, the oil film temperature was obtained by solving numerically the energy and heat conduction equations simultaneously with the Reynolds equation using appropriate boundary conditions. Suitable viscosity temperature model has been used to consider the effect of oil film temperature. The bearing lubricated with oil containing Titanium dioxide (TiO2 ) nanoparticles dispersed in to the base oil with various particle concentration. The effect of adding TiO2 Nano-particles with various particle concentrations (0.1%, 0.5%, 1%, 1.5% and 2%) in order to enhance its viscosity has been discussed. A validation to the mathematical model and the computer program written in Fortran90 prepared to solving the governing equation has been carried out by comparing the result for the dynamic coefficients (stiffness and damping) obtained in the present work with that obtained by Sheeja and Prabhu . The results seen to be in a good agreement with percentage of error less than 2%. The results obtained in the present study show that the bearing stiffness coefficients increases by 30% while the damping coefficients increased by 27% when the bearing lubricated with Nano lubricant that contains TiO2 Nano particles with particle concentration of (1.5%).","PeriodicalId":31812,"journal":{"name":"Iraqi Journal for Mechanical and Materials Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49622339","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: 2

PREDICTION AND ENHANCEMENT OF THICKNESS REDUCTION IN MULTI-POINT FORMING PROCESS USING ANOVA ALGORITHM 基于方差分析算法的多点成形减薄预测与强化

Iraqi Journal for Mechanical and Materials Engineering Pub Date : 2019-03-08 DOI: 10.32852/IQJFMME.V19I1.268

T. Abaas, K. M. Younis, K. Mansor

{"title":"PREDICTION AND ENHANCEMENT OF THICKNESS REDUCTION IN MULTI-POINT FORMING PROCESS USING ANOVA ALGORITHM","authors":"T. Abaas, K. M. Younis, K. Mansor","doi":"10.32852/IQJFMME.V19I1.268","DOIUrl":"https://doi.org/10.32852/IQJFMME.V19I1.268","url":null,"abstract":"Multipoint forming is an engineering concept which means that the working surface of the dieand/or punch is made up of hemispherical ends of individual active elements (called pins), whereeach pin can be independently, vertically displaced using a geometrically reconfigurable die,precious production time is saved because several different products can be made withoutchanging tools. The aim of this work is to present the effect of many parameters (blank Holdertypes, rubber thickness and forming speed) on the reduction of thickness for brass with 0.71 mmthickness. This research is concentrate on the development of predictive models to estimate theminimum deviation in thickness using analysis of variance (ANOVA), minimum thicknessdeviation has been modeled. In the development of this predictive model, blank holder, rubberthickness and forming speed have been considered as model parameters. Arithmetic theminimum thickness deviation used as response parameter to assess the thickness reduction ofMultipoint forming parts. The data required has been generated, compared and evaluated to theproposed models that obtained from experiments. Taguchi algorithm is used to predict theeffect of forming parameters on thickness reduction in forming process of Brass (65-35) basedon orthogonal array of L9. The analysis of variance was used to find the best factors that effecton the thickness deviation, The result of this research is the contribution of blank holder types,rubber thickness and forming speed with respect to minimum thickness deviation is (69.195,18.1 and 12.733) % respectively.","PeriodicalId":31812,"journal":{"name":"Iraqi Journal for Mechanical and Materials Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42401501","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