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Review of recent trends in friction stir welding process of aluminum alloys and aluminum metal matrix composites

Transactions of Nonferrous Metals Society of China 2021年第11期31卷 3281-3309页

作者： John VICTOR CHRISTY abdel-hamid ismail mourad Muhammad M.SHERIF B.SHIVAMURTHY Mechanical Engineering Department College of EngineeringUnited Arab Emirates UniversityAl-AinP.O.Box.15551United Arab Emirates Mechanical Design Department Faculty of EngineeringHelwan UniversityCairoEgypt National Water and Energy Center United Arab Emirates UniversityAl Ain 15551United Arab Emirates Civil Construction and Environmental Engineering DepartmentCollege of EngineeringUniversity of Alabama–BirminghamBirminghamALUSA Department of Mechanical&Manufacturing Engineering Manipal Institute of TechnologyManipal Academy of Higher EducationManipalKarnatakaIndia

Welding is a vital component of several industries such as automotive,aerospace,robotics,and *** welding,these industries utilize aluminum alloys for the manufacturing of many components or ***,fusion welding of aluminum alloys is challenging due to several factors,including the presence of non-heat-treatable alloys,porosity,solidification,and liquation of *** manufacturers adopt conventional in-air friction stir welding(FSW)to weld metallic alloys and dissimilar *** researchers reported the drawbacks of this traditional in-air FSW technique in welding metallic and polymeric materials in general and aluminum alloys and aluminum matrix composites in specific.A number of FSW techniques were developed recently,such as underwater friction stir welding(UFSW),vibrational friction-stir welding(VFSW),and others,for welding of aluminum alloy joints to overcome the issues of welding using conventional ***,the main objective of this review is to summarize the recent trends in FSW process of aluminum alloys and aluminum metal matrix composites(Al MMCs).Also,it discusses the effect of welding parameters of the traditional and state-of-the-art developed FSW techniques on the welding quality and strength of aluminum alloys and Al *** among the techniques and advantages and limitations of each are *** review suggests that VFSW is a viable option for welding aluminum joints due to its energy efficiency,economic cost,and versatile modifications that can be employed based on the *** review also illustrated that significantly less attention has been paid to FSW of Al-MMCs and considerable attention is demanded to produce qualified joint.

关键词： aluminum alloys aluminum matrix composites traditional FSW techniques state-of-the-art FSW techniques microstructure mechanical properties

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Cooling and lubrication techniques in grinding:A state-of-the-art review,applications,and sustainability assessment

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Chinese Journal of Aeronautics 2023年第7期36卷 76-113页

作者： Ahmed Mohamed Mahmoud IBRAHIM Wei LI abdel-hamid ismail mourad Mohamed A.E.OMER Fadl A.ESSA Ahmed Mustafa ABD EL-NABY Mohammad S.Al SOUFI Muhammad F.EZZAT Ammar ElSHEIKH College of Mechanical and Vehicle Engineering Hunan UniversityChangsha 410082China Production Engineering and Mechanical Design Department Faculty of EngineeringMinia UniversityEl Minya 61519Egypt Mechanical and Aerospace Engineering Department College of EngineeringUnited Arab Emirates UniversityAl-Ain 15551United Arab Emirates Department of Production Engineering and Mechanical Design Faculty of EngineeringTanta UniversityTanta 31527Egypt Mechanical Engineering Department Faculty of EngineeringKafrelsheikh UniversityKafrelsheikh 33516Egypt Mechanical Engineering Department College of Engineering and Islamic ArchitectureUmm Al-Qura UniversityMakkah 24231Saudi Arabia Mechanical Engineering Department Faculty of EngineeringUniversity of AlbertaEdmonton T6G 2R3Canada Automotive and Tractors Engineering Department Faculty of EngineeringMinia UniversityEl Minya 61519Egypt Tokyo Institute of Technology Tokyo 152-8550Japan

Grinding technology is an essential manufacturing operation,in particular,when a component with a superfinishing and an ultra-resolution is *** the required strict quality checklist with maintaining a high level of productivity and sustainability is a substantive *** recent paper outlines the lubrication and cooling technologies and mediums that are used for ***,it provides a basis for a critical assessment of the different lubrication/cooling techniques in terms of machining outputs,environmental impact,hygiene effect,***,the paper put light on the sustainability of different cooling/lubrication *** sustainability of machining aims to get the product with the best accuracy and surface quality,minimum energy consumption,low environmental impact,reasonable economy,and minimum effect on worker’s *** paper revealed that despite some cooling/lubrication mediums like mineral oils and semisynthetic,afford sufficient lubrication or cooling,they have a significant negative impact on the environment and public *** the other hand,emulsions can overcome environmental problems but the economy and the energy consumption during grinding are still a matter of *** and vegetable oils are considered eco-friendly oils,but they suffer from a lack of thermal stability which affects their ability of efficiently *** the cooling medium with the lowest amount can achieve the goal of the economy but it may be reflected negatively on the ***,cryogenic lubrication doesn’t provide sufficient lubrication to reduce friction and hence energy *** research described in the paper is such a comprehensive compilation of knowledge regarding the machinability and machining performance under different cooling and lubrication systems that it will aid the next generation of scientists in identifying current advancements as well as potential future directions of research on ecolo

关键词： Cryogenic cooling Dry lubrication Minimum quantity lubrication Precision grinding Solid lubrication Sustainable machining Vegetable oils

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Microplastic in an Arid Region: Identification, Quantification and Characterization on and Alongside Roads in Al Ain, Abu Dhabi, United Arab Emirates

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Journal of Environmental Protection 2022年第10期13卷 671-688页

作者： Rana Zeeshan Habib Tholkappiyan Ramachandran Fathalla Hamed Ruwaya Al Kindi abdel-hamid ismail mourad Thies Thieman Department of Biology College of Science United Arab Emirates University Al Ain Abu Dhabi United Arab Emirates Department of Mechanical and Aerospace Engineering College of Science United Arab Emirates University Al Ain Abu Dhabi United Arab Emirates Department of Physics College of Science United Arab Emirates University Al Ain Abu Dhabi United Arab Emirates Department of Chemistry College of Science United Arab Emirates University Al Ain Abu Dhabi United Arab Emirates

Microplastic content was analyzed in road dust, soils alongside roads and stormwater run-offs in Al Ain City, Abu Dhabi. Apart from tire wear material, fibers and degradation products of meso- and macroplastics such as plastic bags and plastic bottle tops were found to be the most dominant plastic microparticles. Speed bumps and artificial turf/lawns were also evaluated as potential sources of microplastics on and alongside roads. It was found that in arid regions Aeolian transport of microplastics may be more important than transport by water.

关键词： Road Wear Microplastic Artificial Turf Glass Reflector Beads Speed Bumps

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Analysis of the Solid Contents of Toothpastes Available in UAE (United Arab Emirates) Markets

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Journal of Environmental Protection 2022年第7期13卷 539-556页

作者： Marim Elkashlan Vijo Poulose Rana Zeeshan Habib Obaida Karabala Afnan Aldhanhani Maryam Shakir Heba Shaath Tholkappiyan Ramachandran abdel-hamid ismail mourad Fathalla Hamed Ruwaya Al Kendi Thies Thiemann Department of Chemistry College of Science United Arab Emirates University Al Ain United Arab Emirates Department of Biology College of Science United Arab Emirates University Al Ain United Arab Emirates Department of Mechanical and Aerospace Engineering College of Engineering United Arab Emirates University Al Ain United Arab Emirates Department of Physics College of Science United Arab Emirates University Al Ain United Arab Emirates

In order to find out whether any toothpastes commercially available in the United Arab Emirates (UAE) carry microplastic content in form of plastic microbeads, the filterable solid contents of 31 toothpastes from UAE markets and 2 toothpastes imported from Syria were analyzed. FT-IR studies of the solids revealed that the major solid components were hydrated silica and calcium carbonate, where the individual toothpaste product exhibited either one or the other as the dominant constituent. Titrimetric analysis of the alkalinity of the ash of the toothpastes was carried out. The solids, ashed at 600°C were subjected to FT-IR and EDS (energy dispersive X-ray spectroscopic) analysis. The ash of some of the products was shown to have TiO2 and Ca3 (PO4)2 as minor components. Mostly organic dyes were used as colorants;however, iron oxide (Fe2O3) was also found. Importantly, none of the toothpastes carried any solid microplastic particles. Only 3 toothpastes carried microbeads at all, which were made of either silica or microcrystalline cellulose. This finding indicates that toothpastes, at least in the UAE, are no longer a significant source of microplastic in the environment. The results were compared to a toothpaste bought through the internet with a formulation from 2014, which exhibited polythene microplastic at 1.31 ± 0.39 w% of the filterable solid content.

关键词： Toothpastes Formulation Microplastic Plastic Pollution Colorants

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Microplastic in an Arid Region: Identification,Quantification and Characterization on and Alongside Roads in Al Ain, Abu Dhabi, United Arab Emirates

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Journal of Environmental Protection 2022年第10期

作者： rana zeeshan habib tholkappiyan ramachandran fathalla hamed ruwaya al kindi abdel-hamid ismail mourad thies thiemann

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Joint Optimal Power Source Sizing and Data Collection Trip Planning for Advanced Metering Infrastructure Enabled by Unmanned Aerial Vehicles

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Journal of Modern Power Systems and Clean Energy 2022年第5期10卷 1337-1348页

作者： Haiam Shahin Mostafa F.Shaaban Mahmoud H.ismail Hebat-Allah M.mourad Ahmed Khattab Department of Electronics and Communications Engineering Facultyof EngineeringCairo UniversityGiza 12613Egypt IEEE Department of Electrical Engineering American University of SharjahPOBox 26666SharjahThe United Arab Emirates

The use of unmanned aerial vehicles(UAVs) in the collection of data from wireless devices, sensor nodes, and the Internet of Things(IoT) devices has recently received significant attention. In this paper, we investigate the data collection process from a set of smart meters in advanced metering infrastructure(AMI) enabled by UAVs. The objective is to minimize the total annual cost of the electric utility by jointly optimizing the number of UAVs, their power source sizing, the charging locations as well as the data collection trip planning. This is achieved while considering the energy budgets of batteries of UAVs and the required amount of collected data. The problem is formulated as a mixed-integer nonlinear programming(MINLP), which is decoupled into two sub-problems where a candidate UAV and a number of buildings are first grouped into trips via genetic algorithms(GAs), and then the optimum trip path is found using a traveling salesman problem(TSP) branch and bound algorithm. Simulation results show that the battery capacity or the number of UAVs increases as the coverage area or the density increases.

关键词： Advanced metering infrastructure unmanned aerial vehicle power source sizing trip planning genetic algorithm

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Metallic and highly conducting two-dimensional atomic arrays of sulfur enabled by molybdenum disulfide nanotemplate

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npj Computational Materials 2017年第1期3卷 115-122页

作者： Shuze Zhu Xiumei Geng Yang Han mourad Benamara Liao Chen Jingxiao Li ismail Bilgin Hongli Zhu Department of Chemical Engineering Massachusetts Institute of TechnologyCambridgeMA 02139USA Department of Mechanical and Industrial Engineering Northeastern UniversityBostonMA 02115USA Institute for Nanoscale Materials Science and Engineering University of ArkansasFayettevilleAR 72701USA Department of Physics Northeastern UniversityBostonMA 02115USA

Element sulfur in nature is an insulating *** it has been tested that one-dimensional sulfur chain is metallic and conducting,the investigation on two-dimensional sulfur remains *** report that molybdenum disulfide layers are able to serve as the nanotemplate to facilitate the formation of two-dimensional *** functional theory calculations suggest that confined inbetween layers of molybdenum disulfide,sulfur atoms are able to form two-dimensional triangular arrays that are highly *** a result,these arrays contribute to the high conductivity and metallic phase of the hybrid structures of molybdenum disulfide layers and two-dimensional sulfur *** experimentally measured conductivity of such hybrid structures reaches up to 223 S/*** experimental results,including X-ray photoelectron spectroscopy(XPS),transition electron microscope(TEM),selected area electron diffraction(SAED),agree with the computational *** to the excellent conductivity,the current density is linearly proportional to the scan rate until 30,000 mV s^(−1) without the attendance of conductive *** such hybrid structures as electrode,the two-electrode supercapacitor cells yield a power density of 10^(6) Wh kg^(−1) and energy density ~47.5 Wh kg^(−1) in ionic liquid *** findings offer new insights into using two-dimensional materials and their Van der Waals heterostructures as nanotemplates to pattern foreign atoms for unprecedented material properties.

关键词： molybdenum sulfur dimensional

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Hydrological Modelling of Sidi Jabeur Watershed (Morocco) Using Spatially Distributed Model ATHYS

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Journal of Geoscience and Environment Protection 2016年第1期4卷 77-83页

作者： mourad Khattati Mostapha Serroukh ismail Rafik Hakim Mesmoudi Brirhet Hassane Yassine Bouslihim Research Team ERGO Faculty of Science Abdelmalek Essaadi University Tetouan Morocco Faculty of Science and Technology Sidi Mohammed Ben Abdellah University Fes Morocco Faculty of Science and Technology 1st Hassan University Settat Morocco

The objective of this study is to model the hydrology in the Sidi Jabeur basin, located in Bouregreg watershed at the north-central of Morocco, using the spatially distributed model (ATHYS) in order to understand and determine the different watershed hydrological processes. The study requires the collection of a series of data as inputs models namely rainfall data, water quantity, soil occupation, digital terrain model and requires also a calibration in order to evaluate the model in validation phase. The simulation results are obtained from the validation phase aim to replicate the operation of Sidi Jabeur watershed, and present a suitable adjustment perspective of the observed hydrograph. These results show that the objective is achieved and a model distributed like ATHYS plays an effective role in improving the efficiency and presents a high advantage in anticipation of runoff volume.

关键词： Distributed Model Hydrology Sidi Jabeur Watershed ATHYS

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Predicting Students’Final Performance Using Artificial Neural Networks

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Big Data Mining and Analytics 2022年第4期5卷 294-301页

作者： Tarik Ahajjam Mohammed Moutaib Haidar Aissa mourad Azrour Yousef Farhaoui Mohammed Fattah Department of Computer Science Faculty of Sciences and TechniquesMoulay Ismail UniversityErrachidia 52000Morocco IMAGE Laboratory Moulay Ismail UniversityMeknes 50000Morocco

Artificial Intelligence(AI)is based on algorithms that allow machines to make decisions for *** technology enhances the users’experience in various *** studies have been conducted in the field of education to solve the problem of student orientation and performance using various Machine Learning(ML)*** main goal of this article is to predict Moroccan students’performance in the region of Guelmim Oued Noun using an intelligent system based on neural networks,one of the best data mining techniques that provided us with the best results.

关键词： data science Artificial Intelligence(AI) Machine Learning(ML) neural networks prediction recommendation high school data analysis

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Hydrological Modeling of Aguibat Ezziar Watershed (Morocco), Comparative Study of Two Different Hydrological Models

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Journal of Geographic Information System 2016年第1期8卷 50-56页

作者： mourad Khattatı Mostapha Serroukh ismail Rafık Hakim Mesmoudı Hassane Brırhet Yassine Bouslıhım Fatima Hara Research Team ERGO Faculty of Science Abdelmalek Essaadi University Tetouan Morocco Faculty of Science and Technology Sidi Mohammed Ben Abdellah University Fes Morocco Faculty of Science and Technology 1st Hassan University Settat Morocco Scientific Institute Mohammed V University Rabat Morocco

This study aims to compare the performance of two hydrological models, conceptual (HEC-HMS) and spatial (ATHYS) on the Aguibat Ezziar watershed. The comparative analysis is based on the performances of simulation in terms of Nash-Sutcliffe and RSR. The study requires the collection of a series of data as inputs models namely rainfall data, water quantity, soil occupation, DTM and requires also a calibration in order to evaluate these models in validation phase. The simulation results were obtained from the validation phase aiming to replicate the operation of watershed Aguibat Ezziar, and present a suitable adjustment perspective of the observed hydrograph. These results show that the objective is achieved and a model distributed like ATHYS plays an effective role to improve the efficiency and present a high advantage in anticipation of runoff volume comparing with other models.

关键词： Spatial Modeling Distributed Model Conceptual Model Hydrology ATHYS HEC-HMS

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