FUOYE Journal of Engineering and Technology最新文献_第6页

Effect of Machining Directions on Surface Integrity of AISI 1018 Steel in a Face Milling Process 端面铣削加工方向对AISI 1018钢表面完整性的影响

FUOYE Journal of Engineering and Technology Pub Date : 2022-11-20 DOI: 10.46792/fuoyejet.v7i4.882

Isuamfon F. Edem

{"title":"Effect of Machining Directions on Surface Integrity of AISI 1018 Steel in a Face Milling Process","authors":"Isuamfon F. Edem","doi":"10.46792/fuoyejet.v7i4.882","DOIUrl":"https://doi.org/10.46792/fuoyejet.v7i4.882","url":null,"abstract":"This study analyses the effect of machining directions on surface integrity of AISI 1018 steel by performing a face milling operation using the zag toolpath strategy; undertaking a detailed surface roughness check of the machined surface in the cutting and feed directions; studying the microstructure of the as-received workpiece and subsurface of the machined part in the cutting and feed directions in 2% Nital etching; and comparing the grain size before and after the cutting process. Results show that surface roughness values were minimal when measurements were conducted at the middle of the machined surface. Also, surface roughness values were higher in the feed direction than in the cutting direction by 13% due to the presence of feed marks which were clearly visible on the machined surface. The grains at the top machined surface were deformed, elongated, and oriented in the cutting direction as a result of plastic deformations experienced in the machining process, while the grains were also elongated and disoriented in the feed direction. Surface damages caused by the cutting tool’s engagement of the workpiece were clearly seen at the side of the machined surface’s edge. The average grain size value before machining was higher than the average grain size value after machining by 27%, attributed to the plastic deformation of the grain structure as a result of machining. This study has provided an in depth knowledge and understanding of the influence of plastic deformation due to machining on surface roughness and microstructure of the machined part.","PeriodicalId":323504,"journal":{"name":"FUOYE Journal of Engineering and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131036675","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

Comparative Analysis of Mobile Signal Propagation Path Loss in Lagos, Nigeria 尼日利亚拉各斯市移动信号传播路径损耗比较分析

FUOYE Journal of Engineering and Technology Pub Date : 2022-11-20 DOI: 10.46792/fuoyejet.v7i4.902

A. Yussuff, Olanrewaju D. Olayinka

{"title":"Comparative Analysis of Mobile Signal Propagation Path Loss in Lagos, Nigeria","authors":"A. Yussuff, Olanrewaju D. Olayinka","doi":"10.46792/fuoyejet.v7i4.902","DOIUrl":"https://doi.org/10.46792/fuoyejet.v7i4.902","url":null,"abstract":"This research involves comparative analysis of mobile radio transmission path loss models in Lagos state. Lagos, coastal region within an altitude of 38m, and geographical coordinates (63.60N, 3.280E), in the rainforest area of south-western, Nigeria. The measured active base stations propagation measured parameters (for selected areas; Agbowa, Ibeju Imota, Ilupeju, and Surulere in Lagos between 2019 and 2020 from MTN-NG Microsites) recorded between frequency range of 1500- 2500MHz band with a visible line of sight (LOS) in three areas within the state. Stanford University Interim, ECC-33 and COST 231 models were adopted and optimized models were developed and their empirical outcomes revealed standard deviations (SDs) of 1.87, 1.11, and 31.78 respectively at 500m distance from the microsite of average rural areas. For the sub-urban areas, RMSEs (root mean square errors) observed were 39.11, 0.04, and 1.98 and with SD being 33.52, 0.03, and 1.69. More so, for an urban area, it was discovered that the RMSEs obtained for these three models were 34.84, 1.98 and 0.55 with SD of 29.86, 10.27 and 0.47 at same distance of 500m. The implication is that probability of an improved performance is high when optimized models is adopted compared with what is in existence.","PeriodicalId":323504,"journal":{"name":"FUOYE Journal of Engineering and Technology","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125589944","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

Stochastic Simulation Modelling and Analysis of Out-Patient flow: A Case Study of General Hospital Hadejia, North-western Nigeria 门诊流量的随机模拟建模与分析——以尼日利亚西北部Hadejia综合医院为例

FUOYE Journal of Engineering and Technology Pub Date : 2022-11-20 DOI: 10.46792/fuoyejet.v7i4.922

M. Abubakar

引用次数: 1

Design of Cold Storage Structure for the Storage of White Yam (Dioscorea rotundata) Tubers 白山药块茎贮藏冷库结构设计

FUOYE Journal of Engineering and Technology Pub Date : 2022-11-20 DOI: 10.46792/fuoyejet.v7i4.894

A. Oloye, A. Olalusi, F. R. Falayi

{"title":"Design of Cold Storage Structure for the Storage of White Yam (Dioscorea rotundata) Tubers","authors":"A. Oloye, A. Olalusi, F. R. Falayi","doi":"10.46792/fuoyejet.v7i4.894","DOIUrl":"https://doi.org/10.46792/fuoyejet.v7i4.894","url":null,"abstract":"Yam tuber (Dioscorea spp.) is a staple tropical tuber crop that is usually best eaten in its fresh form. However, inadequate preservation and storage can result in yam tubers deterioration immediately after harvesting due to their relatively high moisture content. All the traditional structures of preserving and storing yam tubers could not maintain their freshness for a long time. Therefore, the need for developing a new storage structure for the preservation of farm produce is needed. The major components of the cold storage structure are the frame, compressor, condenser, capillary tube, and evaporator. It would be fabricated with angle iron, galvanized mild steel, and stainless steel and insulated with 0.025 m thick polystyrene foam with the cooling system operating with R134a fluid. The total storage space was 0.2 m3 and it can store 100 kg of tubers of yam. The total heat load, compressor capacity, condenser capacity, and evaporator capacity were 0.204 kW, 0.46 kW, 1.6059 kW, and 1.37931 kW respectively. The structure has the prospect of being used for the preservation and storage of yam tubers and will be very useful in a developing economy like Nigeria.","PeriodicalId":323504,"journal":{"name":"FUOYE Journal of Engineering and Technology","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121936147","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

Collaborative Manufacturing Techniques: A Review 协同制造技术:综述

FUOYE Journal of Engineering and Technology Pub Date : 2022-11-05 DOI: 10.46792/fuoyejet.v7i4.891

Quadri A. Mumuni, A. Adenowo, L. Akinyemi, O. Shoewu, C. O. Folorunso

{"title":"Collaborative Manufacturing Techniques: A Review","authors":"Quadri A. Mumuni, A. Adenowo, L. Akinyemi, O. Shoewu, C. O. Folorunso","doi":"10.46792/fuoyejet.v7i4.891","DOIUrl":"https://doi.org/10.46792/fuoyejet.v7i4.891","url":null,"abstract":"The competitive nature of today's economies has forced the manufacturing sector, small and medium-sized manufacturing enterprises (SMMES), to collaborate with other sectors to achieve stability and consistency. Manufacturing businesses are putting a lot of effort into managing their goods and services to reach a high level of client satisfaction. This is accomplished with the highest quality while maintaining a competitive cost tag. To accomplish this, the collaborative manufacturing technique (CMT) is used. It entails information exchange and dialogue amongst business processes concerning internal or external stakeholders in the hierarchy of value. An active CMT model that incorporates these present collaboration networks should provide operational value savings and significantly increase competitiveness. Therefore, the recent evaluation that provided a detailed view of such inclusion is no longer in existence. To promote collaboration techniques in the successful development of software products, this article provides a complete study of current collaborative models, respective benefits, and their collaborative features. This paper outlines the most recent mechanisms, approaches, and application possibilities for CMTs. In addition, the review paper thoroughly examines the techniques currently in use for employing CMT to solve problems in both science and engineering. More specifically, it suggests a revolutionary method for enhancing the current CMT methods through the application of machine learning (ML), artificial intelligence, and metaheuristics like genetic algorithms and particle swarm optimization (AI). In summary, this research highlights certain areas where CMT may be used soon.","PeriodicalId":323504,"journal":{"name":"FUOYE Journal of Engineering and Technology","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121546819","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

Impact of Metal Work-Function on Current Rectification by Metal-Insulator-Metal Diodes 金属工作功能对金属-绝缘子-金属二极管电流整流的影响

FUOYE Journal of Engineering and Technology Pub Date : 2022-10-11 DOI: 10.46792/fuoyejet.v7i4.886

D. Etor, Michael Ekele, I. Akintunde

引用次数: 0

Properties Assessment and Application of Regression analysis on the compressive strength of Hollow Sandcrete Blocks 空心混凝土砌块抗压强度特性评价及回归分析应用

FUOYE Journal of Engineering and Technology Pub Date : 2022-10-07 DOI: 10.46792/fuoyejet.v7i4.908

Toyin Y. Akanbi, Joy A. Waziri, David I. Brown

{"title":"Properties Assessment and Application of Regression analysis on the compressive strength of Hollow Sandcrete Blocks","authors":"Toyin Y. Akanbi, Joy A. Waziri, David I. Brown","doi":"10.46792/fuoyejet.v7i4.908","DOIUrl":"https://doi.org/10.46792/fuoyejet.v7i4.908","url":null,"abstract":"The study focuses on the properties assessment and application of regression analysis on the compressive strength of hollow sandcrete blocks. A total of ten (10) block producers were visited and fine aggregates used in the production of sandcrete block collected, a total number of 10 blocks per producer was collected with a curing period of 7 days and transported to the laboratory of civil and environmental engineering, Air force institute of technology Kaduna, where it was further cured for an additional period of 7 days making it a total curing period of 14 days. The test carried out on the aggregates and the sandcrete blocks includes: sieve analysis, dimension and compressive strength test. The mix composition of each of the block producer was also determined. Modelling using Minitab software was used to carryout multiple regression analysis to develop a compressive strength model in terms of constituent materials for 14 days curing age of hollow sandcrete blocks. The test result obtained from the sieve analysis of sand from the various block producers revealed that the sand used by the block producers do not comply with the specified standard of grading of aggregates, the mix proportion and dimension of the sandcrete blocks used by the selected block producers does not comply with the required ratio and dimension, the average compressive strength of the blocks ranged from 0.24 N/mm2 to 0.35 N/mm2. The model generated for 14 days compressive strength gave coefficient of regression (R2) of 0.901 for the hollow sandcrete block, showing good correlation.","PeriodicalId":323504,"journal":{"name":"FUOYE Journal of Engineering and Technology","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127076236","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

Comparative and Health Risk Assessment of Heavy Metals in Mangrove Forest and Farm - Bred African Giant Snails (Archachatina Marginata) 红树林与养殖非洲巨螺中重金属的比较及健康风险评价

FUOYE Journal of Engineering and Technology Pub Date : 2022-10-07 DOI: 10.46792/fuoyejet.v7i4.892

Isiaka Adio Hassan

{"title":"Comparative and Health Risk Assessment of Heavy Metals in Mangrove Forest and Farm - Bred African Giant Snails (Archachatina Marginata)","authors":"Isiaka Adio Hassan","doi":"10.46792/fuoyejet.v7i4.892","DOIUrl":"https://doi.org/10.46792/fuoyejet.v7i4.892","url":null,"abstract":"Snails are good source of protein for different classes of people. The aim of this work is to compare and assess the health risk of the heavy metals in mangrove forest and farm - bred snails, as sources of protein. Twelve snails (six mangrove forest and six farm - bred) of two sizes (big and small) were sourced from Bayeku mangrove forest and Snail Farm at Second gate of Lagos State University of Science and Technology (LASUSTECH) respectively. The, Fe, Cd, Cr, Ni, Cu, Pb, and Zn concentration of the snails were evaluated using standard analytical methods. The data obtained were subject to differential and inferential statistics using a statistical package (SPSS 22.0 version) and compare with Food and Agriculture Organization (FAO) limit. Fe (732.32 - 734.24 mg/kg), Cu (145.17 - 145.19 mg/kg), Zn (62.38 - 62.51 mg/kg) of big snail from mangrove forest were the highest compared with Fe, Cu, and Zn in mangrove forest (small), farm bred (big and small) snail. Cr (77.20 - 77.46), Ni (21.14 – 21.28), and Pb (1.20 - 1.22) mg/kg in small snail (mangrove forest) were the highest. Cadmium (6.83 - 6.84 mg/kg) of the farm bred (big snail) was the highest. Mangrove forest bred snail; Fe (733.26±0.96), Cr (38.01±0.78), Ni (50.32±0.37), Cu (145.18±0.01), and Zn (62.43±0.07) mg/kg were significantly higher than their corresponding FAO Limits. Farm - bred snail Cr (38.99±0.21), and Zn (36.80±0.01) mg/kg were significantly higher than their corresponding FAO permissible limits. However, farm bred has lower heavy metal concentrations than mangrove forest bred. Hence, farm bred are better product.","PeriodicalId":323504,"journal":{"name":"FUOYE Journal of Engineering and Technology","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132780500","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

Development of Microcontroller Based Gas Leakage Detector with Dual SMS Alert 基于单片机的双短信报警气体泄漏检测仪的研制

FUOYE Journal of Engineering and Technology Pub Date : 2022-09-25 DOI: 10.46792/fuoyejet.v7i3.867

R. E. Ochagwuba, Ayodele S. Oluwole, Olusola A. Akinsanya

{"title":"Development of Microcontroller Based Gas Leakage Detector with Dual SMS Alert","authors":"R. E. Ochagwuba, Ayodele S. Oluwole, Olusola A. Akinsanya","doi":"10.46792/fuoyejet.v7i3.867","DOIUrl":"https://doi.org/10.46792/fuoyejet.v7i3.867","url":null,"abstract":"The prevailing treat to lives and property by the usage of gas for cooking, etc, and the rapidly increasing evolution in new technologies worldwide, a novel approach utilizing dual communication network providers is applied to alert users in the event of leakage of Liquefied Petroleum Gas (LPG). In this work, a prototype gas leakage detector, based on dedicated Peripheral Interface Controller (PIC), sensitive MQ-6 gas sensor, GSM/GPRS SIM900 and discrete components is developed and tested. Glo and MTN network service providers were selected for the design. Both indoor and laboratory tests were conducted where the results indicate gas concentration levels of 372 ppm to 255 ppm were measured to display a message on Liquid Crystal Display (LCD) and trigger audio alarm at instances of 2.42 secs and 8.35 secs in locations of 5 cm and 30 cm away from gas source respectively. Finally, the viability test proved satisfactory as it indicates that whenever a particular network fails, the second network was available to receive the SMS message adequately. This could be applied in homes, restaurants, etc where cooking gas is often used. Future enhancements should include the deployment of all available communication network service providers to augment for the limitation of the only two networks in this work.","PeriodicalId":323504,"journal":{"name":"FUOYE Journal of Engineering and Technology","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122061244","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

Design and Implementation of Intelligent Traffic Control System using Programmable Logic Controller 基于可编程控制器的智能交通控制系统的设计与实现

FUOYE Journal of Engineering and Technology Pub Date : 2022-09-14 DOI: 10.46792/fuoyejet.v7i3.858

Christopher O. Okoh, Ayodele S. Oluwole, Olusola A. Akinsanya

{"title":"Design and Implementation of Intelligent Traffic Control System using Programmable Logic Controller","authors":"Christopher O. Okoh, Ayodele S. Oluwole, Olusola A. Akinsanya","doi":"10.46792/fuoyejet.v7i3.858","DOIUrl":"https://doi.org/10.46792/fuoyejet.v7i3.858","url":null,"abstract":"Generally, traffic light systems are regarded as open loop control systems, that is, they are in continuous operation without any form of feedback that can help the system take a decision based on certain conditions. And so, this is specifically part of the reason why there exist high vehicular densities at roundabouts. Having considered in providing a solution to this problem, this project integrated a 4I/O Programmable Logic Controller (PLC) into the traffic light system circuitry which provided feedback based on signals received from the input sensors connected to the PLC. When these sensors get energized due to the presence of a vehicle, it sends an ON-bit signal to the PLC through the input port terminating the sensor and the PLC. This signal in turn triggers the output port mapped in the microprocessor so that it energizes the Light Emitting Diodes (LEDs). During simulation, two forms of control were used: Primary (default) and Secondary control systems. On the secondary control, the PLC receives signal from the ultrasonic sensor on road tracks A and B then allows long queued vehicles to pass while it stops vehicular movement on road track C and D and vice versa. It is identified that this method of traffic light control has helped to ensure orderliness and evenly distributed vehicular flow at case study roundabout.","PeriodicalId":323504,"journal":{"name":"FUOYE Journal of Engineering and Technology","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115434570","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