Al-Khwarizmi Engineering Journal最新文献_第10页

Inverse Kinematics Analysis and Simulation of a 5 DOF Robotic Arm using MATLAB 基于MATLAB的五自由度机械臂逆运动学分析与仿真

Al-Khwarizmi Engineering Journal Pub Date : 2020-03-12 DOI: 10.22153/kej.2020.12.001

T. Abaas, A. A. Khleif, M. Abbood

引用次数: 2

The Influence of ProcessVariables for MillingSculptured Surfaces on Surface Roughness 铣削加工表面加工参数对表面粗糙度的影响

Al-Khwarizmi Engineering Journal Pub Date : 2020-03-12 DOI: 10.22153/kej.2020.01.001

M. Abdulrazaq

引用次数: 0

Selection of OptimumRadiant Barrier System (RBS) Location in Double Skin Ventilated Roofs 双层通风屋顶中辐射屏障系统(RBS)位置的选择

Al-Khwarizmi Engineering Journal Pub Date : 2020-03-12 DOI: 10.22153/kej.2020.11.001

Mohannad R. Ghanim, Sabah T Ahmed

{"title":"Selection of OptimumRadiant Barrier System (RBS) Location in Double Skin Ventilated Roofs","authors":"Mohannad R. Ghanim, Sabah T Ahmed","doi":"10.22153/kej.2020.11.001","DOIUrl":"https://doi.org/10.22153/kej.2020.11.001","url":null,"abstract":"Double skin ventilated roof is one of the important passive cooling techniques that aims to reduce solar heat gain through roofs by reducing both the conduction and convection heat transfer from the roof to the ceiling of buildings. On the other hand, radiant barrier system (RBS) is very powerful in blocking the radiation heat transfer between the two skins. In this research,the effect of placing a thin layer of aluminium foil at different locations on the thermal insulation performance of a double skin ventilated roof model is investigated experimentally and the optimum location that transmits less heat flux from the lower skinis specified.The model is made of two parallel inclined galvanized steel plates. Galvanized steel has been used in the roof construction of industrial buildings and storehouses in Iraq.The radiant barrierisapplied alternately, on the outer surface of the upper skin, on the inner surface of the upper skin, suspended in the airgap between the skins, and on the inner surface of the lower skin.These casesareconsidered as Model A, Model B, Model C, and Model D, respectively. It is found that the radiant barrier can block up to78% of the heat in Model A, 71% in Model B, 94% in Model C, and 91% in Model D as compared with the Basic Model.Since the radiant barrierin both Model C and Model D blocks almost the same amount of heat, the location of the radiant barrierin Model D is chosen as the optimumradiant barrierlocation because this model is more practical.","PeriodicalId":7637,"journal":{"name":"Al-Khwarizmi Engineering Journal","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79906341","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

Optimization the Effect of Electrode Material Change on EDM Process Performance Using Taguchi Method 利用田口法优化电极材料变化对电火花加工工艺性能的影响

Al-Khwarizmi Engineering Journal Pub Date : 2020-03-12 DOI: 10.22153/kej.2020.09.001

S. Aghdeab, Ahmed Ghazi Abdulameer, Lujain Hussein Abdulameer, A. Mohammed

{"title":"Optimization the Effect of Electrode Material Change on EDM Process Performance Using Taguchi Method","authors":"S. Aghdeab, Ahmed Ghazi Abdulameer, Lujain Hussein Abdulameer, A. Mohammed","doi":"10.22153/kej.2020.09.001","DOIUrl":"https://doi.org/10.22153/kej.2020.09.001","url":null,"abstract":"Electrical Discharge Machining (EDM) is a widespread Nontraditional Machining (NTM) processes for manufacturing of a complicated geometry or very hard metals parts that are difficult to machine by traditional machining operations. Electrical discharge machining is a material removal (MR) process characterized by using electrical discharge erosion. This paper discusses the optimal parameters of EDM on high-speed steel (HSS) AISI M2 as a workpiece using copper and brass as an electrode. The input parameters used for experimental work are current (10, 24 and 42 A), pulse on time (100, 150 and 200 µs), and pulse off time (4, 12 and 25 µs) that have effect on the material removal rate (MRR), electrode wear rate (EWR) and wear ratio (WR). A Minitab software environment was used to adopt Taguchi method to analyze the effect of input on output parameters of EDM. The results of the present work showed that the best of MRR in copper and brass electrodes with (current 42 A, pulse on time 100 µs and pulse off time 25 µs) are (84.355×10-3 g/min) and (43.243×10-3 g/min) respectively, and the MRR predicted by Taguchi are (86.1751×10-3 g/min) in copper electrode by using the parameters with (current 10 A, pulse on time 200 µs and pulse off time 25 µs) and (43.2979×10-3 g/min) in brass electrode at current 42 A, pulse on time 100 µs, and pulse off time 25 µs. The lowest EWR occurs with a value of (1.4510×10-3 g/min) with (current 10 A, pulse on time 100 µs, pulse off time 4 µs) variables when using a copper electrode. The highest WR (2.602508) was found for the brass electrode with (current 24 A, pulse on time 200 µs, pulse off time 4 µs) variables.","PeriodicalId":7637,"journal":{"name":"Al-Khwarizmi Engineering Journal","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75507113","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

Improving Reverse Engineering Processes by using Articulated Arm Coordinate Measuring Machine 利用铰接臂三坐标测量机改进逆向工程流程

Al-Khwarizmi Engineering Journal Pub Date : 2020-03-12 DOI: 10.22153/kej.2020.02.001

Dhuha Mohammed Mahmood, Ahmed Zaidan Mahmood

{"title":"Improving Reverse Engineering Processes by using Articulated Arm Coordinate Measuring Machine","authors":"Dhuha Mohammed Mahmood, Ahmed Zaidan Mahmood","doi":"10.22153/kej.2020.02.001","DOIUrl":"https://doi.org/10.22153/kej.2020.02.001","url":null,"abstract":"The invention relates to a coordinate measuring machine (CMM) for determining a measuring position of a probe. The AACMM isdepends on the robotkinematics (forward and reverse) in their measurementprinciple, i.e., using the AACMM links and joint angles todetermine the exact workspace or part coordinates. Hence, themeasurements are obtained using an AACMM will be extremely accurate and precise since that ismerely dependent on rigid structural parameters and the only source of measurement error is due to human operators. In this paper, a new AACMM design was proposed. The new AACMM design addresses common issues such as solving the complex kinematics, overcoming the workspace limitation, avoiding singularity, and eliminating the effects of design error by designing a new and compatible AACMM that will incorporate all affective design factors into consideration. Different types of design factors and limitations, which significantly affect the AACMM production fabrication processes, and ultimately.accuracy are given. Cost and time factors effects on the design and manufacturing are found to be the most significant. Two primary manufacturing techniques were used, both of which relied on rigors CAD/CAM iterations resulting in an entirely usable G-Code.Those methods are CNC and 3D printing, the most widely used methods in any industry. Nevertheless, accuracy and ergonomics factors must be considered for precise measurements. The design was validated through various methods, such as the use of finite element measurement techniques, to make sure that the design was structurally correct","PeriodicalId":7637,"journal":{"name":"Al-Khwarizmi Engineering Journal","volume":"82 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74518503","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

Effects of Sodium Chloride and Sodium Sulphate Solutions on the Output of the Electrochemical Machining 氯化钠和硫酸钠溶液对电解加工产量的影响

Al-Khwarizmi Engineering Journal Pub Date : 2019-12-01 DOI: 10.22153/kej.2019.10.004

Heba saad Qasim, S. Aghdeab

{"title":"Effects of Sodium Chloride and Sodium Sulphate Solutions on the Output of the Electrochemical Machining","authors":"Heba saad Qasim, S. Aghdeab","doi":"10.22153/kej.2019.10.004","DOIUrl":"https://doi.org/10.22153/kej.2019.10.004","url":null,"abstract":"Electrochemical Machining is a term given to one of nontraditional machining that uses a chemical reaction associated with electric current to remove the material. The process is depending on the principle of anodic dissolution theory for evaluating material removal during electrochemical process. In this study, the electrochemical machining was used to remove 1 mm from the length of the a workpiece (stainless steel 316 H) by immersing it in to electrolyte (10, 20 and 30 g) of NaCl and Na2SO4 to every (1 litter of filtered water). The tool used was made from copper. Gap size between the workpiece and electrode is (0.5) mm. This study focuses on the effect of the changing the type and concentration of electrolyte solution, the effect of the value of current (2, 5 and 10) A and the effect of the value of the voltage (6, 12 and 20)V on the Surface Roughness (Ra) and Material Removal Rate (MRR) of the workpiece. The results of comparison of experimental showed that (Na2SO4) solution give surface roughness less than (NaCl) solution in all levels, maximum (Ra) is (0.658) and minimum (0.420), while (NaCl) solution give maximum (Ra) is (2.913) and minimum is (0.508), also give (MRR) higher from (NaCl) solution in level (30 g/l ) at (5 A) , (10 and 20 g/l) at (10 A) ,and (30)g/l at (6 &12 V). This study aims to compare the effect of using different electrolyte solution including sodium chloride (NaCl) and sodium sulphate (Na2SO4) on the surface roughness (Ra) and material removal rate (MRR). \u0000Generally increasing in machining parameter (concentration of solution, current and voltage) lead to increase in (MRR) and (Ra). ","PeriodicalId":7637,"journal":{"name":"Al-Khwarizmi Engineering Journal","volume":"36 1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77969820","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

Evaluation and Improvement of Manufacturing System Using Computer Software Arena 基于计算机软件竞技场的制造系统评价与改进

Al-Khwarizmi Engineering Journal Pub Date : 2019-12-01 DOI: 10.22153/kej.2019.10.003

K. A. Hasan, A. Kadhum, A. Morad

{"title":"Evaluation and Improvement of Manufacturing System Using Computer Software Arena","authors":"K. A. Hasan, A. Kadhum, A. Morad","doi":"10.22153/kej.2019.10.003","DOIUrl":"https://doi.org/10.22153/kej.2019.10.003","url":null,"abstract":"The main purpose of the paper is to identify the controllability of an existing production system; yogurt production line in Abu Ghraib Dairy Factory which has several machines of food processing and packing that has been studied. Through the starting of analysis, instability in production has been found in the factory. The analysis is built depending on experimental observation and data collection for different processing time of the machines, and statistical analysis has been conducted to model the production system. Arena Software is applied for simulating and analyzing the current state of the production system, and results are expanded to improve the system production and efficiency. Research method is applied to contribute in knowing and expecting the future running of the system to enhance the controllability of the system production and improve the production system and machine efficiency. Moreover, built an experiment-real model in Arena in order to control the system in term of production and process. First step is to collect the statistical data required for analysis in terms of input and output data for analysis. Second, is to track the production problem in term of process bottleneck in order to improve the utilization of the system. Third is to validate the model in order to overcome the product demand of the system uncontrollability. Through the result analysis of waiting time and production rate, it is clearly shown that system is stable with a need to resetting the capacity as a chance for the improvement, regarding to resources utilization. Re-planning resources capacity positively enhances the production and profitability of the system.","PeriodicalId":7637,"journal":{"name":"Al-Khwarizmi Engineering Journal","volume":"74 1","pages":"71-78"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83992790","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

Modeling of Bending Properties of Stainless Steel 304 Sheets Welded by Tungsten Inert Gas Welding Process 304不锈钢薄板钨惰性气焊弯曲性能的建模

Al-Khwarizmi Engineering Journal Pub Date : 2019-12-01 DOI: 10.22153/kej.2019.09.003

A. H. Alwan

引用次数: 3

Free Vibration Analysis of Laminated Composite Plates with General Boundary Elastic Supports Under Initial Thermal Load 初始热载荷作用下一般边界弹性支撑层合复合材料板的自由振动分析

Al-Khwarizmi Engineering Journal Pub Date : 2019-12-01 DOI: 10.22153/kej.2019.09.004

Mohammed B. Hammed, W. I. Majeed

{"title":"Free Vibration Analysis of Laminated Composite Plates with General Boundary Elastic Supports Under Initial Thermal Load","authors":"Mohammed B. Hammed, W. I. Majeed","doi":"10.22153/kej.2019.09.004","DOIUrl":"https://doi.org/10.22153/kej.2019.09.004","url":null,"abstract":"Free vibration behavior was developed under the ratio of critical buckling temperature of laminated composite thin plates with the general elastic boundary condition. The equations of motion were found based on classical laminated plate theory (CLPT) while the solution functions consists of trigonometric function and a continuous function that is added to guarantee the sufficient smoother of the so-named remaining displacement function at the boundaries, in this research, a modified Fourier series were used, a generalized procedure solution was developed using Ritz method combined with the imaginary spring technique. The influences of many design parameters such as angles of layers, aspect ratio, thickness ratio, and ratio of initial in- plane thermal load in addition to different boundary conditions on the natural frequencies of laminated plate is analyzed. In general, the changes of fundamental natural frequency is inversely proportional with the ratio of thermal buckling load, also most parameters aspect ratio effect on the natural frequency about 35 – 40%. The present results were compared with those obtained by other researchers, and show good agreement.","PeriodicalId":7637,"journal":{"name":"Al-Khwarizmi Engineering Journal","volume":"74 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84001095","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

Improving the Network Lifetime in Wireless Sensor Network for Internet of Thing Applications 面向物联网应用的无线传感器网络寿命改进

Al-Khwarizmi Engineering Journal Pub Date : 2019-12-01 DOI: 10.22153/kej.2019.09.007

A. A. Salman, Zainab T. Alisa

{"title":"Improving the Network Lifetime in Wireless Sensor Network for Internet of Thing Applications","authors":"A. A. Salman, Zainab T. Alisa","doi":"10.22153/kej.2019.09.007","DOIUrl":"https://doi.org/10.22153/kej.2019.09.007","url":null,"abstract":"Mobile Wireless sensor networks have acquired a great interest recently due to their capability to provide good solutions and low-priced in multiple fields. Internet of Things (IoT) connects different technologies such as sensing, communication, networking, and cloud computing. It can be used in monitoring, health care and smart cities. The most suitable infrastructure for IoT application is wireless sensor networks. One of the main defiance of WSNs is the power limitation of the sensor node. Clustering model is an actual way to eliminate the inspired power during the transmission of the sensed data to a central point called a Base Station (BS). In this paper, efficient clustering protocols are offered to prolong network lifetime. A kernel-based fuzzy C-means clustering algorithm (KFCM) is adopted to cluster sensor nodes, while a cluster head (CH) is selected for each cluster based on a fuzzy logic system. Results depicts that the new work performs better than the existing algorithms (as Low Energy Adaptive Cluster Hierarchy-Mobile (LEACH-M) and Low Energy Adaptive Cluster Hierarchy-Mobile Enhancement (LEACH-ME)) in terms of network lifetime, energy consumption, packet transmission and stability period.","PeriodicalId":7637,"journal":{"name":"Al-Khwarizmi Engineering Journal","volume":"45 1","pages":"79-90"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87350384","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