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Latest Technologies, Design Considerations, and Quality Concerns of Additive Polymers Manufacturing 增材聚合物制造的最新技术、设计考虑和质量问题
Pub Date : 2023-07-30 DOI: 10.24018/ejeng.2023.8.4.2956
Hema Vanasarla, Herman Tang, Philip Rufe
Additive manufacturing (AM or 3D printing) is known for large capacities like design freedom, reduced tooling, and production hours. AM evolving exciting advancements for new business models in different industries. Few research papers and studies are limited to material specifications, processes, or quality issues. So, this literature review combined with considerations of AM for polymers materials to quality process to get basic ideas or to lay the groundwork for future researchers. To outline the critical points for investigative queries and identify research gaps in this literature with primarily detailed info on innovation technologies. This review states polymers materials optimization and its manufacturing, all-purpose design considerations, and limitations define CAD source printing and step-by-step quality processes for the fortitude of the analysis to create previous research intended to advantage researchers for future business practices in Industrial revolution 4.0.
增材制造(AM或3D打印)以大容量而闻名,如设计自由度,减少工具和生产时间。AM在不同行业的新商业模式中不断发展令人兴奋的进步。很少有研究论文和研究局限于材料规格、工艺或质量问题。因此,本文献综述结合增材制造对高分子材料质量过程的考虑,以获得基本思路或为未来的研究奠定基础。概述调查性查询的关键点,并确定本文献中与创新技术的主要详细信息有关的研究差距。本文综述了聚合物材料优化及其制造、通用设计考虑和限制,定义了CAD源打印和逐步质量过程的分析强度,以创建先前的研究,旨在为研究人员在工业革命4.0中未来的商业实践提供优势。
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引用次数: 0
Repair of Worn-Out Parts of Auger Presses by Surfacing Method 用堆焊法修复螺旋压力机磨损部件
Pub Date : 2023-07-19 DOI: 10.24018/ejeng.2023.8.4.3072
Nikita Koriuchev, Oleksii Kovtun, Daniel Shehovsov, I. Tkalenko
In the briquetting process of various finely dispersed materials using the auger pressing method, an important issue is extending the service life and repairing worn-out elements, such as the auger, die, and lining. This study provides a literature review and industrial experience in repairing worn-out parts of industrial presses. It formulates the main approaches for restoring abrasive surfaces and presents the results of experimental studies aimed at prolonging the lifespan of augers in briquette presses using surfacing methods, including using powders obtained from solid alloy waste.
在采用螺旋压片法对各种细碎分散物料进行压块的过程中,一个重要的问题是延长使用寿命和修复磨损的部件,如螺旋、模具和衬板。本研究对工业压力机的易损件维修提供了文献回顾和工业经验。它阐述了修复磨料表面的主要方法,并介绍了旨在使用堆焊方法(包括使用从固体合金废料中获得的粉末)延长型煤压力机螺旋钻寿命的实验研究结果。
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引用次数: 1
Behavior of Square Footings Reinforced with Glass Fiber Bristles and Biaxial Geogrid 玻璃纤维刷毛与双轴土工格栅加固方脚的性能
Pub Date : 2023-07-19 DOI: 10.24018/ejeng.2023.8.4.3075
El-Sayed A. El-Kasaby, M. Awwad, Mohab Roshdy, A. A. Abo-Shark
This study investigates the influence of biaxial geogrids on the flexural behavior of square footing foundations reinforced with glass fiber reinforced concrete (GFRC). Experimental research is conducted, involving the testing of five reinforced concrete square footings under area loading until failure. The variables considered are the number of geogrid layers and the percentage of longitudinal reinforcement. Various parameters including deflection, loads at each stage, stiffness, ductility, energy absorption, crack patterns, as well as strains in steel, concrete, and geogrid, are analyzed and compared. The results reveal that incorporating geogrid layers as a reinforcement technique with GFRC significantly enhances the flexural behavior of the footings and improves cracking patterns. The number of geogrid layers used in the footings substantially increases the loads at each stage. Furthermore, an empirical equation is developed to establish a correlation between the moment acting on the footings and the tensile strength of geogrid reinforcement. The empirical evidence demonstrates a substantial improvement in the strength resistance of geogrid-reinforced footings with GFRC, surpassing those reinforced with steel and normal concrete mix. This research contributes valuable insights for the design and construction of earth structures, highlighting the advantages of biaxial geogrids in reinforcing GFRC footings with enhanced flexural performance.
本文研究了双轴土工格栅对玻璃纤维增强混凝土(GFRC)方形基础受弯性能的影响。进行了5个钢筋混凝土方脚在区域荷载作用下直至破坏的试验研究。考虑的变量是土工格栅层数和纵向钢筋的百分比。各种参数,包括挠度,在每个阶段的荷载,刚度,延性,能量吸收,裂纹模式,以及应变在钢,混凝土和土工格栅,进行了分析和比较。结果表明,将土工格栅层作为加固技术与GFRC结合,可以显著提高基础的抗弯性能,改善裂缝形态。基础中使用的土工格栅层数大大增加了每个阶段的载荷。此外,还建立了一个经验方程,以建立作用在基础上的力矩与土工格栅加筋抗拉强度之间的相关性。经验证据表明,GFRC土工格栅加筋基础的抗强度显著提高,超过了钢筋和普通混凝土配合比的基础。该研究为土工结构的设计和施工提供了有价值的见解,突出了双轴土工格栅在增强GFRC基础抗弯性能方面的优势。
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引用次数: 1
Enhancing Security for Robot-Assisted Surgery through Advanced Authentication Mechanisms Over 5G Networks 通过5G网络的高级认证机制增强机器人辅助手术的安全性
Pub Date : 2023-07-09 DOI: 10.24018/ejeng.2023.8.4.3064
Shaman Bhat, Ashwin Kavasseri
The adoption of robotic surgical procedures over wireless 5G networks has increased rapidly in recent years, providing improved precision and patient outcomes. However, the security and reliability of the end-to-end information between the surgeon's control console and the robotic system are critical concerns. This paper proposes a solution to enhance the security and reliability of the authentication process in robot-assisted surgery by enhancing existing authentication mechanisms. The proposed solution builds upon the existing Transport Layer Security (TLS) protocol, and introduces additional security measures, including biometric authentication and multi-factor authentication while minimizing latency and delay in transmission. The effectiveness of the proposed solution is evaluated through simulation and testing, demonstrating its ability to provide enhanced security for robot-assisted surgery. The proposed solution has the potential to provide an additional layer of security while staying in realistic bounds of latency and delay in data transmission.
近年来,通过无线5G网络采用机器人手术的情况迅速增加,提高了手术的精确度和患者的治疗效果。然而,外科医生控制台和机器人系统之间端到端信息的安全性和可靠性是关键问题。本文提出了一种通过改进现有认证机制来提高机器人辅助手术认证过程安全性和可靠性的解决方案。拟议的解决方案建立在现有的传输层安全(TLS)协议之上,并引入了额外的安全措施,包括生物识别身份验证和多因素身份验证,同时最大限度地减少了传输中的延迟和延迟。通过仿真和测试评估了所提出的解决方案的有效性,证明了其为机器人辅助手术提供增强安全性的能力。建议的解决方案有可能提供额外的安全层,同时保持数据传输中的延迟和延迟的实际范围。
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引用次数: 0
Effect of speed, feed rate and tray angle on the dehulling, cleaning and grain loss from an acha (Digitaria exilis) dehulling machine 速度、进给量和托盘角度对洋黄连脱壳机脱壳、清洗和籽粒损失的影响
Pub Date : 2023-06-30 DOI: 10.5897/jetr2022.0734
I. Itodo, P. Yusuf, T. K. Kaankuka
This study determined the effect of cylinder speed, feed rate and tray angle on the dehulling efficiency and the effect of fan speed, feed rate and tray angle on the cleaning efficiency and grain loss from an acha ( Digitaria exilis) dehulling machine in a 3 × 3 factorial experimental design in three replicates. The cylinder speeds were 1500, 2000 and 2500 rpm and the fan speeds were 160, 185 and 213 rpm. The feed rates were 20, 30 and 40 g min -1 and tray angles of 22.5°, 45°, and 67.5°. The results were analyzed using the analysis of variance at p ≤ 0.05 to determine if the speeds and tray angle inclinations had a significant effect on the dehulling efficiency, cleaning efficiency and grain loss at the various feed rates. The Duncan’s New Multiple Range Test was used to separate the means where there was significant difference. The feed rate had no significant effect on the dehulling and cleaning efficiencies and grain loss. The speeds and tray angles had a significant effect on the dehulling and cleaning efficiencies and grain loss. The dehulling efficiency was higher at higher tray angles. The cleaning efficiency was higher at the higher fan speeds and tray angles. The grain loss from the machine was higher at the higher fan speeds and lower at the higher tray angles.
采用3个重复的3 × 3因子试验设计,研究了滚筒转速、进料速率和托盘角度对马地黄脱壳机脱壳效率的影响,以及风机转速、进料速率和托盘角度对马地黄脱壳机脱壳效率和籽粒损失的影响。气缸转速分别为1500、2000和2500转,风扇转速分别为160、185和213转。进料速度分别为20、30和40 g min -1,托盘角度分别为22.5°、45°和67.5°。采用p≤0.05的方差分析对结果进行分析,以确定在不同进料速率下,速度和塔板倾角对脱壳效率、清洗效率和谷物损失是否有显著影响。采用Duncan’s New Multiple Range Test对有显著差异的均数进行分离。进料速率对脱壳、清壳效率和籽粒损失无显著影响。速度和塔板角度对脱壳、清壳效率和颗粒损失有显著影响。塔板角度越大,脱壳效率越高。风机转速和托盘角度越高,清洗效率越高。风机转速越高,谷物损失越大,托盘角度越大,谷物损失越小。
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引用次数: 0
TPS-Genetic Algorithm for Real-Time Sailing Route Planning based on Potential Field Theory 基于势场理论的tps -遗传算法实时航行路线规划
Pub Date : 2023-06-28 DOI: 10.24018/ejeng.2023.8.3.3061
Xinqing Zhuang, Siqing Zhuang, Dongmei Su, Sheng Du, Yihua Liu
Real-time route planning is always a difficulty in maritime traffic. Route planning must take into account the complex meteorological environment. Route planning based on meteorological environment real-time update is the basis of route feasibility. Based on potential field theory, this paper proposes a TPS - Genetic algorithm for real-time route planning of sailing ships. On the basis of genetic algorithm, combined with the characteristics of route planning, the turning point sorting operation is added to improve the calculation efficiency, and further improve the real-time performance of route planning. Simulation experiments are established and compared with A* algorithm. The experimental results show that the potential field theory can accurately express the dynamic changes of Marine meteorology, and the path planned by TPS - Genetic algorithm is more suitable for real-time navigation environment. TPS - Genetic algorithm can be applied to ship navigation system, which can further adjust the potential energy base and plan routes according to the needs of shipping companies.
实时航路规划一直是海上交通中的难题。路线规划必须考虑到复杂的气象环境。基于气象环境实时更新的航路规划是航路可行性的基础。基于势场理论,提出了一种用于船舶实时航路规划的TPS -遗传算法。在遗传算法的基础上,结合路线规划的特点,增加了拐点排序操作,提高了计算效率,进一步提高了路线规划的实时性。建立了仿真实验,并与A*算法进行了比较。实验结果表明,势场理论能准确表达海洋气象的动态变化,TPS -遗传算法规划的路径更适合实时导航环境。TPS -遗传算法可以应用到船舶导航系统中,根据航运公司的需要,进一步调整势能基数,规划航线。
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引用次数: 0
Decision Support System for Admission of Regional Government Scholarships in Merauke Regency Using the TOPSIS Method 基于TOPSIS方法的Merauke地区政府奖学金录取决策支持系统
Pub Date : 2023-06-26 DOI: 10.24018/ejeng.2023.8.3.3055
Selfina Pare, Tatik M. Tallulembang, Agustan Latif
Scholarship is a government program given to high school graduates to be able to continue their studies at the tertiary level. This is as stipulated in the Regent Regulation (PERBUP) No 25 of 2019 concerning "providing scholarships and educational assistance to students of Merauke Regency". In the scholarship acceptance selection activities in 2019, approximately 103 applicants were recorded, and 74 were successfully accepted. The process of selecting prospective scholarship recipients is currently being carried out, namely checking and comparing one by one with the applicant's data. Based on data in 2019, where there are applicants whose report card value data is incomplete but is accepted for a scholarship. This is considered to have an impact on the decision-making results of prospective scholarship recipients in subsequent years. In order to assist KESRA in selecting scholarship recipients, these obstacles can be overcome by using a decision support system. The design of this decision support system is carried out using the TOPSIS method, namely selecting the alternative that is the shortest distance from the positive ideal solution and the furthest distance from the negative ideal solution. The results obtained in this study are a system that can assist the People's Welfare in determining the selection of scholarship recipients based on the three predetermined criteria. Testing the accuracy of the system obtained is 67% and for testing the questionnaire to obtain a percentage of 66.67% which is in the "Agree" category.
奖学金是政府提供给高中毕业生的一项计划,帮助他们继续在高等教育阶段的学习。这是根据2019年摄政条例(PERBUP)第25号关于“向Merauke摄政学生提供奖学金和教育援助”的规定。在2019年的奖学金录取选拔活动中,约有103人申请,74人成功录取。目前正在进行筛选奖学金获得者的过程,即逐一与申请人的数据进行核对和比较。根据2019年的数据,有成绩单价值数据不完整但被奖学金录取的申请人。这被认为对未来奖学金获得者在随后几年的决策结果有影响。为了帮助KESRA选择奖学金获得者,这些障碍可以通过使用决策支持系统来克服。本决策支持系统的设计采用TOPSIS方法,即选择离正理想解距离最短、离负理想解距离最远的备选方案。本研究的结果是一个可以协助福利院根据三个预定标准确定奖学金获得者选择的系统。测试系统获得的准确性为67%,测试问卷获得66.67%的百分比,属于“同意”类别。
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引用次数: 0
“The Samiul Turn”: An Inventive Roadway Design Where No Vehicles Have to Stop Even for a Second and There is No Need for Traffic Control “Samiul转弯”:一种新颖的道路设计,车辆一秒钟都不用停车,也不需要交通管制
Pub Date : 2023-06-17 DOI: 10.24018/ejeng.2023.8.3.3063
F. A. Samiul Islam
One of the most challenging and complicated issues in city management for most countries of the world is the traffic problem. It is a very common phenomenon in almost all the world’s cities. Due to high traffic congestion, a substantial portion of working hours have to be left on streets which indirectly has an adverse impact on the economy of a country. Moreover, it causes serious air pollution, and noise pollution thus worsening the overall environmental condition. An adequate and efficient transportation system is a prerequisite for the sustainable economic development of every country. The main purpose of this paper is to introduce a new roadway design and the name of the roadway design is “The Samiul Turn”. If a country implements “The Samiul Turn” roadway system on their roadway, it can eliminate the traffic congestion problem. The author of this paper is the designer of “The Samiul Turn” roadway system.
交通问题是世界上大多数国家城市管理中最具挑战性和最复杂的问题之一。这在世界上几乎所有的城市都是一个非常普遍的现象。由于交通严重拥堵,相当一部分工作时间不得不留在街上,这间接地对一个国家的经济产生了不利影响。此外,它还造成严重的空气污染和噪音污染,从而恶化了整体环境状况。充足和有效的运输系统是每个国家可持续经济发展的先决条件。本文的主要目的是介绍一种新的道路设计,该道路设计的名称为“The Samiul Turn”。如果一个国家在他们的道路上实施“Samiul Turn”道路系统,就可以消除交通拥堵问题。本文的作者是“Samiul转弯”道路系统的设计者。
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引用次数: 0
An Innovative E-LHP Software to Study the Effect of Radius on (LHP) During Transient Heat Transfer Quenched Alloy SCM440-Steel Bar 一种新型的E-LHP软件研究了半径对瞬态换热淬火合金scm440钢棒(LHP)的影响
Pub Date : 2023-06-16 DOI: 10.24018/ejeng.2023.8.3.3015
A. Elmaryami, W. Muhammad
The modeling of an axisymmetric industrial quenched alloy steel SCM440 based on the finite element method (FEM) has been produced to investigate the impact of process history on material properties and metallurgical. Mathematical modeling of the 1-Dimensional element axisymmetric model has been adopted to determine the temperature history and consequently the hardness of the heat-treated steel bar at any node. The lowest hardness point (LHP) will be at the half-length at the center and the effect of radius on (LHP) is calculated. In this manuscript hardness (HRC) in specimen points was determined by the conversion of computed characteristic cooling time for phase transformation t8/5 which equal  (t5 - t8) to hardness. The model can be employed as a guideline to design a cooling approach to achieve desired mechanical properties such as hardness, toughness, and microstructure. The developed mathematical model was converted into a computer program. The computer program can be used independently or incorporated into a temperature history software named (E-LHP-software) to continuously determine and display the temperature history of the heat-treated quenched steel bar and thereby calculate the lowest hardness point and the effect of the radius in LHP can be analyzed and studied. The developed program from the mathematical model (MM) has been verified and validated by comparing its hardness results with experimental work results. The comparison indicates the reliability of the proposed model.
采用有限元方法对轴对称工业淬火合金钢SCM440进行了数值模拟,研究了工艺过程对材料性能和冶金性能的影响。采用一维单元轴对称模型的数学模型来确定温度历史,从而确定热处理钢筋在任何节点的硬度。最低硬度点出现在中心半长处,并计算了半径对最低硬度点的影响。在本文中,试样点的硬度(HRC)是由计算的相变特征冷却时间t1 /5(等于(t5 - t8)与硬度的转换确定的。该模型可以作为设计冷却方法的指导方针,以获得所需的机械性能,如硬度,韧性和微观结构。开发的数学模型被转换成计算机程序。计算机程序可以独立使用,也可以与温度历史软件(E-LHP-software)结合使用,连续测定和显示热处理淬火钢筋的温度历史,从而计算出最低的硬度点,并分析和研究LHP中半径的影响。根据数学模型(MM)编制的程序,通过硬度计算结果与实验工作结果的对比,对程序进行了验证和验证。比较表明了所提模型的可靠性。
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引用次数: 0
Wireless Power Transfer: A Review of Existing Technologies 无线电力传输:现有技术综述
Pub Date : 2023-06-09 DOI: 10.24018/ejeng.2023.8.3.3038
Ugochukwu C. Nnamdi, I. Asianuba
Wireless Power Transfer (WPT) can be described as the processing of transmitting electricity without the use of wires. It has been increasingly used in places where battery depletion and replacement are major issues. WPT Technology are being used in different sectors. They include wireless charging, Electric vehicles, consumer electronics, etc. The paper describes the various types of WPT technologies; Inductive Coupling, Magnetic Resonance and Radio Frequency (RF) technology. It also discusses the advantages and shortfalls of each type. An extensive survey of past works was discussed. Results from the research findings showed that distance and conversion efficiency were limiting factors in implementing wireless transfer technology.
无线电力传输(WPT)可以被描述为不使用电线传输电力的处理。它已经越来越多地用于电池耗尽和更换是主要问题的地方。WPT技术被用于不同的部门。它们包括无线充电、电动汽车、消费电子产品等。本文介绍了各种类型的WPT技术;电感耦合,磁共振和射频(RF)技术。并讨论了每种类型的优点和不足。讨论了对过去作品的广泛考察。研究结果表明,距离和转换效率是实现无线传输技术的限制因素。
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引用次数: 0
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European Journal of Engineering and Technology Research
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