Journal of Electrical and Computer Engineering Innovations最新文献

{"title":"Optimization of a Developed Multi-Cyclone Using Response Surface Methodology (RSM) to Control Fine Particulate Emission","authors":"N. Hasyimah, M. Rashid, H. Norelyza","doi":"10.4028/p-7540tu","DOIUrl":"https://doi.org/10.4028/p-7540tu","url":null,"abstract":"The effects of increasing volumetric air flow rate and inlet particulate loading on overall collection efficiency of MR-deDuster; a developed multi-cyclone system was investigated using various segregated sizes of palm oil mill boiler fly ash. The operating conditions of the fabricated pilot plant scale of the unit were predicted theoretically and screened experimentally. Increasing volumetric air flow rate theoretically will increase the overall collection efficiency, yet the experimental results during screening stage demonstrated contradict finding when the increment of volumetric air flow rate caused the overall collection efficiency to be decreased for a constant particulate loading. Subsequently, the optimization work was done to determine the optimum operating conditions of the system using Response Surface Method (RSM) with Box-Behnken design. The parallel arrangement of multi-cyclone units proved the ability of the system to uniformly disseminate the gas flow with high volume of gas carrier. Nevertheless, excessive pressure drops between each unit of multi-cyclone due to high volumetric air flow rate should be avoided as such condition may lower the overall collection efficiency by allowing dust re-entrainment from the hopper to circulate between the cyclones. Through statistical analysis of variance (ANOVA), validation and verification studies, it is suggested that the developed pilot scale multi-cyclone unit would be able to meet the targeted limit of 150 mg/m3 for solid fuel burning equipment industry in Malaysia by operating with optimized volumetric air flow rate of 0.27 m3/s, and maximum inlet particulate loading rate and size of 2 g/m3 and 1000 μm respectively.","PeriodicalId":34329,"journal":{"name":"Journal of Electrical and Computer Engineering Innovations","volume":"43 1","pages":"21 - 29"},"PeriodicalIF":0.0,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76237454","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}

{"title":"Arbitrary color usage in interface design and impact on intuitive use","authors":"Ahiaklo-Kuz Noble, Rötting Matthias","doi":"10.5897/jece2022.0204","DOIUrl":"https://doi.org/10.5897/jece2022.0204","url":null,"abstract":"As the usage of computer systems is on the rise and role of user interfaces in usage space cannot be undermined, there has been tremendous research into interaction design schemes and interface design methodologies. However, research that directly addresses visual design approaches, which is the interplay between User Interface (UI) elements and the basic principles of design, is scarce. This particular investigation engaged participants (N=24) in an interactions scheme where color and labels of common fruit and vegetables are randomly altered. The aim is to ascertain if the arbitrary color attribution within the interaction scheme affects accuracy of outcome and/or interaction speed. Subjecting outcome various statistical analysis reveals interesting principle that broadly recapitulate all design decision in organizing elements. This study is an excerpt from a bigger instructional design process to develop a minimalist conceptual framework to support user interface design and evaluation.","PeriodicalId":34329,"journal":{"name":"Journal of Electrical and Computer Engineering Innovations","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83057129","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}

{"title":"Pretreatment Process on Reverse Osmosis Brine as Electrodialysis Feed","authors":"F. Taufany, Rahmasari Nur Setyono, Abdul Wasi, I. W. R. S. Krishna, Y. Rahmawati, A. Altway, Susianto, S. Nurkhamidah","doi":"10.4028/p-g0witu","DOIUrl":"https://doi.org/10.4028/p-g0witu","url":null,"abstract":"Reverse Osmosis (RO) Brine is waste generated from the desalination process using the RO method. RO Brine is generally directly thrown back into the sea, even though it has the potential to be reprocessed because it still contains a variety of ions in it. The best method in RO Brine processing is Electrodialysis. But it has a problem of decreased membrane performance caused by the formation of fouling. The fouling problem can be overcome by doing a pretreatment process to eliminate impurities contained in RO Brine, one of which is Ca2+. The existence of Ca2+ can trigger the formation of CaSO4 deposits. Therefore, it needs excess reagent Na2CO3 with a certain amount to eliminate the whole Ca2+. Currently, it isn’t yet known the best pretreatment conditions that can eliminate impurities ions and produce high concentrations of NaCl. Pretreatment trials are needed in various variations of reagents amount to reduce impurities. The purpose of this study is to find out the best RO Brine pretreatment process that will later be used for the electrodialysis process to produce high NaCl recovery. The best results were obtained in the pretreatment process with variations NaOH excesses by 15% and Na2CO3 by 30% from the ideal stoichiometry.","PeriodicalId":34329,"journal":{"name":"Journal of Electrical and Computer Engineering Innovations","volume":"415 1","pages":"13 - 21"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84899769","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}

{"title":"Research and Test of the Self-Designed and Manufactured Rotary Friction Welding Machine with CT3 Steel Samples","authors":"Tran Vinh Hung, Ta Van Ranh, Tran Thi Van Nga, L. Ky","doi":"10.4028/p-rod566","DOIUrl":"https://doi.org/10.4028/p-rod566","url":null,"abstract":"This paper presents the results of research and test of the self-designed and manufactured rotary friction welding machine. Tensile test results show that the tensile strength of the material after welding is satisfactory according to the standards of the material; the elongation is within the elongation limit of the welding specimen; the yield limit is greater than the minimum yield limit of the material. The parameters of the welding equipment are guaranteed according to the design requirements.","PeriodicalId":34329,"journal":{"name":"Journal of Electrical and Computer Engineering Innovations","volume":"4 1","pages":"23 - 34"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82138984","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}

{"title":"MHD Slip Flow and Heat Transfer with Ohmic Heating between a Rotating Solid Disk and Stationary Permeable Disk","authors":"S. Gunakala, V. Job, Maraika Alexander","doi":"10.4028/p-d6t7o5","DOIUrl":"https://doi.org/10.4028/p-d6t7o5","url":null,"abstract":"In this paper, the axially-symmetric MHD (magnetohydrodynamic) slip fluid flow and heat transfer between a rotating disk and a stationary permeable disk has been examined. The physical system is comprised of a free-fluid region with an underlying fluid-saturated porous bed with a solid base. The fluid flow within the free-fluid region is modeled using the Navier-Stokes equation, whereas the flow within the porous bed is described using the Brinkman equation. The governing equations of fluid flow and heat transfer, along with the associated boundary conditions, are reduced to a system of ordinary differential equations using suitable similarity transformations. A series expansion technique is then employed in order to obtain analytical approximations for the velocity and temperature distributions. The results produced in this study are presented in graphical form. Unless otherwise stated, the following non-dimensional values are used for the numerical calculations: Hartmann number M=1, Reynolds number R=0.1, Darcy parameter beta=0.05, thermal conductivity ratio lambda=0.5, Eckert number Ec=10, slip parameter N^*=0.05, eta=1, and Prandtl numbers Pr_1=Pr_2=10. The influence of the Darcy parameter, Hartmann number and thermal conductivity ratio on the flow velocity and fluid temperature are investigated.","PeriodicalId":34329,"journal":{"name":"Journal of Electrical and Computer Engineering Innovations","volume":"7 1","pages":"1 - 12"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73175677","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}

{"title":"The Use of Hybrid Viscoelastic Sheets in the Shipbuilding of GFRP Planing Hull Vessels Externally Adhered to the Laminate","authors":"P. Townsend, J. C. Suárez, Á. Rodríguez-Ortíz","doi":"10.4028/p-o984an","DOIUrl":"https://doi.org/10.4028/p-o984an","url":null,"abstract":"The use of viscoelastic sheets in the hull of vessels built from GFRP has been raised in previous works as an option to protect the vessel from the destructive damage of slamming. The present work proposes its use in boats previously built by adhering to the outside of the hulls of the ships. Its installation process is shown, and this new type of installation is compared. Through impact tests with GFRP panels, it is shown that the viscoelastic material maintains its property of absorbing slamming energy and protecting the interior of the laminate. Fatigue tests on the order of 5x104 cycles are carried out to evaluate the impact force, the accelerations that deform the laminate and the virtual energy work imposed on the panel. This option shows that designers have a new option to protect the hull of already built boats.","PeriodicalId":34329,"journal":{"name":"Journal of Electrical and Computer Engineering Innovations","volume":"22 1","pages":"35 - 40"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80829841","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}

{"title":"Parametric Analysis of SiO2 MOSFET Based Absorber for 5G Massive MIMO Base Station","authors":"Elliot O. Omoru, V. Srivastava","doi":"10.4028/p-xbmtx2","DOIUrl":"https://doi.org/10.4028/p-xbmtx2","url":null,"abstract":"The performance of the SiO2 MOSFET-based absorber as a solution to arching within transmission lines (used for RF signal transportation) has been realized and analyzed at 28 GHz using the reflected signal from the RX branch of 5G massive MIMO base station. The reflected signal from the receiver (RX) branch of base stations may lead to interference, thus creating a performance reducing condition (arching) within the transmission lines. For optimum performance in the 5G regime, the SiO2 MOSFET has been used to solve the problem of arching within the transmission line under large field intensities of a standing wave resulting from the impedance. The SiO2 MOSFET-based absorber has been observed for a reflectivity of -79.5 dB and a rectification efficiency greater than 17 %","PeriodicalId":34329,"journal":{"name":"Journal of Electrical and Computer Engineering Innovations","volume":"18 1","pages":"41 - 46"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81660717","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}

{"title":"Failure Investigation & Analyses of AISI D3 Dies Used in Tableting Machines for Pharmaceutical Application","authors":"V. Shrinivas, R. Narasimhan, T. Arumugam","doi":"10.4028/p-wxru3h","DOIUrl":"https://doi.org/10.4028/p-wxru3h","url":null,"abstract":"AISI D3 material finds wide use as Dies in Tableting Machines for Pharmaceutical applications owing to its good strength, toughness and moderate corrosion resistance combined with cost effectiveness. However, 10-15% of AISI D3 Dies used in rotary Tableting Machines were found to fail within 4-6 months of service resulting in frequent disruption of regular production and loss in overall productivity besides having potential long-term risks such as metal contamination in the output product. Visual examination of the failed Die showed 180o crack across the top Die face with rust marks, but no such crack was found on the bottom face. Also, the crack on the top Die face had a jagged morphology and those cracks on the Outer Diameter (OD) surface oriented in the axial direction were found to be straight and sharp. Macro-examination of Die sectioned diametrically and perpendicular to the crack on the Die face revealed jagged axial cracks on the Internal Diameter (ID) surface. Cluster pitting marks centered around mid-height of the Die were observed on the ID surface and the cut open sections of the Die along the crack revealed extensive corrosion. While microstructural examination of samples taken on the ID surface showed presence of banded carbides oriented axially in tempered martensite matrix, the same examination carried out on samples taken on Die face revealed fine needle like carbides in tempered martensite matrix. Fractography analysis conducted in the cluster pitting zone on the ID surface clearly showed presence of micro-cracks having multiple points of origin with clear indications of propagation into the cross section of the Die. Scanning Electron Microscopy (SEM) carried out in the aforementioned zone near ID surface also showed the presence of multiple micro-cracks. The SEM-EDX analysis in the referred zone at specific locations in the vicinity of microcracks confirmed inadequate Chromium oxide content leading to lack of corrosion resistance in the material. Based on the investigation & analyses and the detailed study of the Tableting Process in rotary Tableting Machines that revealed the nature of applied load to be cyclic, a comprehensive failure mechanism was arrived at, and it was inferred that the predominant mode of AISI D3 Die failure was Corrosion Fatigue. Finally, recommendation has been proposed to prevent such failures during service.","PeriodicalId":34329,"journal":{"name":"Journal of Electrical and Computer Engineering Innovations","volume":"61 1","pages":"21 - 30"},"PeriodicalIF":0.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76836149","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}

{"title":"Innovative Solutions for Waste Removal (Used Abrasive) Resulted from Water Jet Cutting Process","authors":"I. Perianu, R. Cojocaru, E. Binchiciu, G. Mnerie","doi":"10.4028/p-40ya00","DOIUrl":"https://doi.org/10.4028/p-40ya00","url":null,"abstract":"Due to the extraordinary qualities established and imposed worldwide, the water jet cutting process is increasingly used in current industrial applications.It is well known that the process can be applied to a wide range of materials: metallic and non-metallic alloys, polymeric materials, ceramic materials, glass, stone, marble, wood, rubber, etc.An important challenge in the conception and design of water jet cutting equipment is the removal of used abrasive material from the discharge tank during or after water jet cutting operations.The paper presents innovative solutions proposed and developed worldwide for the evacuation / extraction from the tank of water jet cutting machines of used abrasive particles and / or particles resulting from materials subjected to the cutting process.","PeriodicalId":34329,"journal":{"name":"Journal of Electrical and Computer Engineering Innovations","volume":"7 1","pages":"49 - 57"},"PeriodicalIF":0.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75635654","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}

{"title":"Damage Occurrence in Welded Structures of the Bucket-Wheel Boom","authors":"M. Arsić, Željko Flajs, S. Aleksandar, E. Veg, S. Sedmak","doi":"10.4028/p-15iqnw","DOIUrl":"https://doi.org/10.4028/p-15iqnw","url":null,"abstract":"Causes of damage occurrence in vital components of welded structures of the bucket-wheel excavator boom (DU1) at the coal landfill of the thermal power plant 'Nikola Tesla A' in Obrenovac (Serbia) are investigated. Bucket-wheel excavator was produced by French company 'Ameco' and it moves along the circular track. Taking into account lack of technical documentation, all tests and were carried out under the assumption that welded structures were made of structural steels S355 and S235. Investigation of causes of damage occurrence are based on results of non-destructive tests (NDT) and tensometric measurements.","PeriodicalId":34329,"journal":{"name":"Journal of Electrical and Computer Engineering Innovations","volume":"25 1","pages":"41 - 48"},"PeriodicalIF":0.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89105500","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}