ICMAME 2023 Conference Proceedings最新文献

Parametric Optimization of Friction Stir Welding (FSW) of Dissimilar Aluminum Alloys with Newly Developed Tool 异种铝合金搅拌摩擦焊新工艺的参数优化

ICMAME 2023 Conference Proceedings Pub Date : 1900-01-01 DOI: 10.53375/icmame.2023.243

Nikita Sharma, Anuraj Singh

引用次数: 0

Hydraulic Design, Numerical and Experimental Analysis of an API Overhung Pump Used in the Oil Industry 石油工业用API悬挑泵的液压设计、数值与实验分析

ICMAME 2023 Conference Proceedings Pub Date : 1900-01-01 DOI: 10.53375/icmame.2023.293

N. Sarabchi, Behzad Karimzad Sharifi, A. Soroureddin

{"title":"Hydraulic Design, Numerical and Experimental Analysis of an API Overhung Pump Used in the Oil Industry","authors":"N. Sarabchi, Behzad Karimzad Sharifi, A. Soroureddin","doi":"10.53375/icmame.2023.293","DOIUrl":"https://doi.org/10.53375/icmame.2023.293","url":null,"abstract":"An API overhung process pump is proposed and analyzed. The pump with a flow rate of 125 m3/h and a Head of 113 m is designed and manufactured by Pumpiran Co. according to API 610 standard. This pump is used in the Tehran oil refinery to pump heavy oil with a working temperature of 390 oC. In the present work, a novel method is developed to design the pump’s hydraulic components, including the impeller and double volute casing. For simulating the three-dimensional turbulent fluid flow, numerical analysis based on CFD is performed by ANSYS-Fluent software. The obtained numerical results are in acceptable agreement with the corresponding experimental results, and the relative error around the rated point is less than 2%. The maximum efficiency of 66.5% is achieved at a flow rate of 135 m3/h. The rated point is at 92.5% of the best efficiency point, and this value is within the allowable region of the API 610 standard. Furthermore, the effect of the volute throat area size on hydraulic performance is perused. The results show that with increasing the size of the volute throat area, the BEP shifts to higher flow rates.","PeriodicalId":385901,"journal":{"name":"ICMAME 2023 Conference Proceedings","volume":"277 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126845306","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

Experimental investigation of the elastic properties of PE/CNT nanocomposite PE/CNT纳米复合材料弹性性能的实验研究

ICMAME 2023 Conference Proceedings Pub Date : 1900-01-01 DOI: 10.53375/icmame.2023.176

R. T. Tebeta, A. Fattahi, D. Madyira, H. Ngwangwa

{"title":"Experimental investigation of the elastic properties of PE/CNT nanocomposite","authors":"R. T. Tebeta, A. Fattahi, D. Madyira, H. Ngwangwa","doi":"10.53375/icmame.2023.176","DOIUrl":"https://doi.org/10.53375/icmame.2023.176","url":null,"abstract":"Developing and designing engineering materials with desirable properties, such as high strength to weight ratio, formability, corrosion resistance and biocompatibility, among many other properties, is crucial, especially in modern engineering and material science industries. This is influenced by the demand for high-performing and more efficient materials in biomedical, aerospace, and automotive engineering, as well as in other engineering sectors where such materials are required. However, it is challenging to attain such materials, and this has raised the attention of numerous research studies in composite and nanocomposite materials. Composite materials are formed as the result of combining two or more distinct materials to yield advanced materials with properties that are entirely different from the original materials. This paper investigates the effects of reinforcing High-Density polyethylene (HDPE) with Multi-Walled Carbon Nanotubes (MWCNT) nanoparticles at weight fractions of 0, 0.5, 1, and 1.5 wt.%. In this paper, only the elastic properties of the HDPE were evaluated at these different weight fractions. The results show that a weight fraction of 1 wt.% of MWCNTs nanoparticles offered the best reinforcement for HDPE/MWCNT nanocomposites among the investigated weight fractions.","PeriodicalId":385901,"journal":{"name":"ICMAME 2023 Conference Proceedings","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129815474","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

Study of Mechanical Properties of Polyethylene/CNT Nanocomposites: Experimental, FEM and MD 聚乙烯/碳纳米管复合材料力学性能研究:实验、有限元和MD

ICMAME 2023 Conference Proceedings Pub Date : 1900-01-01 DOI: 10.53375/icmame.2023.163

R. T. Tebeta, D. Madyira, A. Fattahi, H. Ngwangwa

{"title":"Study of Mechanical Properties of Polyethylene/CNT Nanocomposites: Experimental, FEM and MD","authors":"R. T. Tebeta, D. Madyira, A. Fattahi, H. Ngwangwa","doi":"10.53375/icmame.2023.163","DOIUrl":"https://doi.org/10.53375/icmame.2023.163","url":null,"abstract":"Designing and developing a new material can be challenging due to several aspects that require consideration. Materia behavior, material properties (physical or chemical), and other material characteristics are the factors to consider when developing new materials. In this work, polymer-based nanocomposite material is developed using High-Density Polyethylene (HDPE) as a matrix, Single-walled Carbon Nanotube (SWCNTs) as the reinforcing particles. Moreover, the mechanical properties of the produced HDPE/SWCNT nanocomposites, such as elastic modulus, were investigated at different weight fractions of SWCNTs. The investigation was conducted using numerical (Molecular Dynamics MD), theoretical (Finite Element Method FEM), and experimental approaches. The major aim of this study was to validate the accuracy of the developed MD model and the theoretical FEM with the experimental results. The obtained elastic modulus results from the MD and FEM were compared to see which method produced the results correlating with the experimental results. The compared results showed that MD results were consistent with the experimental results, even though they are not accurate, though the model can be improved. However, the FEM results do not correlate with the experimental results, hence the FEM model developed is not better for the prediction of the elastic modulus of HDPE/SWCNTs nanocomposites.","PeriodicalId":385901,"journal":{"name":"ICMAME 2023 Conference Proceedings","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129470308","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

Parametric Optimization of Friction Stir Welding (FSW) of Dissimilar Aluminum Alloys with Newly Developed Tool 异种铝合金搅拌摩擦焊新工艺的参数优化

ICMAME 2023 Conference Proceedings Pub Date : 1900-01-01 DOI: 10.53375/icmame.2023.368

Arsalan Hussain, A. Usman, Farhan Ausaf, Samad Ali Taj, A. Mourad

{"title":"Parametric Optimization of Friction Stir Welding (FSW) of Dissimilar Aluminum Alloys with Newly Developed Tool","authors":"Arsalan Hussain, A. Usman, Farhan Ausaf, Samad Ali Taj, A. Mourad","doi":"10.53375/icmame.2023.368","DOIUrl":"https://doi.org/10.53375/icmame.2023.368","url":null,"abstract":"Friction stir welding is a rising solid-state material joining procedure which has revolutionized the world. It’s majorly utilized for joining aluminum and alike soft materials for industrial and commercial use. The present study comprised of experimental investigation of FSW operation parameters like tool rotational speed, tool transversal speed, and tool pin geometry profile on the tensile strength of friction stir welded joint between Al alloy 6061-T651 and Al alloy 5083-H321. Two newly developed pin profiles that are cylindrical quad slotted and cylindrical threaded quad slotted are used along with cyclindrical threaded tool pin profiles. Tool rotation speed selected for the operation are 600, 900 and 1200 revolution per minute and tool transversal speeds are 20, 40 and 60 milimetre per minute. Tools were produced from TS (Tool Steel) H-13. The FSW operation was conducted on vertical-axis milling machine. Tensile test, most widely used to experimentally varrify the strength of material is applied to check the weld strength performed through FSW. Taguchi design of experiment was used in order to investigate the optimum parameters with minimum number of experiments. Analysis of variance (ANOVA) and regression analysis are applied for evaluating the relative significance and importance of individual parameters affecting mechanical behavior of the weld joints. The result imply that tool’s pin geometry profile has a significant impact on the strength of weld joint cylindrical threaded quad slotted tool pin profile produced the best weld joints. This study also suggests that the increased motion of plasticized phase of Al in horizontal and vertical trajectory simultaneously, which was achieved with the help of cylindrical treaded quad slotted pin profile gives the best weld joint under the same circumstances in relation to other tools under studies. The study also suggests that best weld was achieved with highest tool rotational speed and lowest tool transversal speed.","PeriodicalId":385901,"journal":{"name":"ICMAME 2023 Conference Proceedings","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130638743","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

Bearing Fault Detection Scheme Using Machine Learning for Condition Monitoring Applications 使用机器学习进行状态监测应用的轴承故障检测方案

ICMAME 2023 Conference Proceedings Pub Date : 1900-01-01 DOI: 10.53375/icmame.2023.137

Ali Saad, A. Usman, Saad Arif, M. Liwicki

{"title":"Bearing Fault Detection Scheme Using Machine Learning for Condition Monitoring Applications","authors":"Ali Saad, A. Usman, Saad Arif, M. Liwicki","doi":"10.53375/icmame.2023.137","DOIUrl":"https://doi.org/10.53375/icmame.2023.137","url":null,"abstract":"Bearings are the significant components among the rolling machine elements subjected to high wear and tear. The timely detection of faults in such components rotating at higher frequencies can save substantial maintenance costs and production setbacks. Physical examination and fault detection by human experts is always challenging at runtime. Predictive maintenance and real-time condition monitoring are gaining higher utility with the advent of suitable instrumentation and machine learning classifiers. A convolutional neural network (CNN) based bearing fault detection scheme is developed in this research work. The acquired sensory data of vibration signals are converted into the frequency domain and then fed to the classifier for spectral feature extraction and fault classification. The CNN architecture is trained and tested using a bearing dataset available online. The model is further tested and validated with the data acquired from an indigenously designed bearing test rig. The proposed scheme has successfully detected inner and outer race faults and no fault or normal state. This multiclass fault classification has shown promising results with 97.68% accuracy, 96.9% precision, 99.14% sensitivity, 98.01% F1-score, and 93.65% specificity. The achieved results validate the utility of the proposed detection system. Hence the presented scheme has deployment potential for real-time condition monitoring and predictive maintenance applications.","PeriodicalId":385901,"journal":{"name":"ICMAME 2023 Conference Proceedings","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123506241","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

Thermophysical Properties of Carbide and Nitride Nanofluids 碳化物和氮化物纳米流体的热物理性质

ICMAME 2023 Conference Proceedings Pub Date : 1900-01-01 DOI: 10.53375/icmame.2023.419

W. Ajeeb, S. Murshed

引用次数: 0

Effect of Vapor Quality and Pressure Drop on the Performance of CO2 Trans-Critical Air Conditioning Cycle with Porous Evaporator 蒸汽质量和压降对多孔蒸发器CO2跨临界空调循环性能的影响

ICMAME 2023 Conference Proceedings Pub Date : 1900-01-01 DOI: 10.53375/icmame.2023.125

M. Tarawneh

{"title":"Effect of Vapor Quality and Pressure Drop on the Performance of CO2 Trans-Critical Air Conditioning Cycle with Porous Evaporator","authors":"M. Tarawneh","doi":"10.53375/icmame.2023.125","DOIUrl":"https://doi.org/10.53375/icmame.2023.125","url":null,"abstract":"Evaporation process is playing a big rule on the performance of trans-critical CO2 cycle. Because of its low performance in air conditioning systems, low ozone depletion, low global warming, CO2 as refrigerant pushed many researchers to study the effect of many thermodynamic parameters on its coefficient of performance. In this experimental study, the effect of pressure -drop and vapor quality on the performance of trans-critical carbon dioxide air conditioning system is studied when using an evaporator partially filled with porous material. A test rig consists of porous evaporator, compressor, gas cooler and expansion valve is used. Small steel balls with porosities of 30%,40%, 50% and 100% are used. Gas cooler pressure is changed from 75-125 bar. Evaporation temperature is changed from 8-18 o C. An increase in pressure-drop of about 157.6% is noticed by decreasing porosity from 100% to 30%. An increase in pressure-drop reached a value of 66.2% by increasing vapor quality from 0.1-0.48 and fixing porosity at 30%. Percentages of decrease in coefficient of performance of about 37% and 49% are recorded by increasing pressure-drop from 24.8 -43.3 kPa and increasing vapor quality from 0.1-0.48, respectively. The decrease of porosity and the increase of pressure drop resulted in an increase in the cycle coefficient of performance. An optimum value of coefficient of performance of 4.9 is found when the gas cooler pressure reached 100 bar at porosity and evaporation temperature of 30% and 14 o C, respectively.","PeriodicalId":385901,"journal":{"name":"ICMAME 2023 Conference Proceedings","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124158436","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

CFD Effect of Propellers Interference on the Thrust Variation in the Proximity of Fixed and Horizontal Moving Obstacle 螺旋桨干涉对固定和水平移动障碍物附近推力变化的CFD影响

ICMAME 2023 Conference Proceedings Pub Date : 1900-01-01 DOI: 10.53375/icmame.2023.191

C-F. Hage, T. Sophy, E. Aglzim

{"title":"CFD Effect of Propellers Interference on the Thrust Variation in the Proximity of Fixed and Horizontal Moving Obstacle","authors":"C-F. Hage, T. Sophy, E. Aglzim","doi":"10.53375/icmame.2023.191","DOIUrl":"https://doi.org/10.53375/icmame.2023.191","url":null,"abstract":"Quadcopters have gained widespread popularity in various sectors including military and civilian applications. They are used for tasks such as cargo transportation, military surveillance, and public aerial photography. However, when flying near obstacles or moving objects, quadcopters may encounter external forces that can cause flight instability. This research involves the use of Computational Fluid Dynamics (CFD) simulations to study the flow dynamics interference of two Phantom 3 drone propellers as they hover near fixed and moving obstacles. The simulations use a tetrahedral mesh with multiple reference frames (MRFs) and are validated by comparing the results to experimental and theoretical data. The simulations are conducted at different altitudes (0.1 m, 0.2 m, 0.5 m, and 1 m), rotational speeds (3000 rpm, 5000 rpm, and 9550 rpm), and with the obstacles moving at different velocities (5 m/s, and 10 m/s), in order to understand the aerodynamic effect of these variables on the performance of the propellers. When hovering (9550 rpm) at 0.1 m above a fixed obstacle, the results have shown first an increase in the lift by 9.28% for an isolated propeller, and then an increase by just 3.94%, and 4.39%, for the first and the second propeller, respectively, when placed next to each other (29 cm spacing). The variation in thrust is also reduced by half when the propellers are moving far from the wall (at 0.2 m height) compared to a sole propeller thrust. Finally, the moving wall below the propellers at several velocities proved to also have a significant effect on the thrust variation of the propellers at low hovering speeds.","PeriodicalId":385901,"journal":{"name":"ICMAME 2023 Conference Proceedings","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124235176","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

Plasticity Deformation Displacement Models for Metal Plates-A Review 金属板塑性变形位移模型综述

ICMAME 2023 Conference Proceedings Pub Date : 1900-01-01 DOI: 10.53375/icmame.2023.194

Mathapelo Sekwai, D. Madyira, G. Oosthuizen

{"title":"Plasticity Deformation Displacement Models for Metal Plates-A Review","authors":"Mathapelo Sekwai, D. Madyira, G. Oosthuizen","doi":"10.53375/icmame.2023.194","DOIUrl":"https://doi.org/10.53375/icmame.2023.194","url":null,"abstract":"This paper presents a review of existing plastic deformation displacement analysis models for materials and components. Plastic deformation analysis is important in the study of failed components. This is because it provides insight on how materials and components behave after the yield point has been exceeded and the deviation of the plates from their original position in terms of displacement. The plasticity phenomenon also provides insight on how to improve the engineering materials and components to avoid their failure and to decide if the displacement of the plate is significant enough to discard the plate or it is still within operating standards. There are multiple analytical models that offer a method of predicting plastic deformation displacement. These are divided into the material and component (plates) plasticity models. The different plasticity models will be presented, with their limitations being highlighted. In recent years the more commonly used methods are numerical and experimental, however the analytical models are still useful for initial plastic deformation predictions. The plasticity models reviewed in this paper are a combination of either one of the aforementioned models.","PeriodicalId":385901,"journal":{"name":"ICMAME 2023 Conference Proceedings","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117077905","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