FME Transactions最新文献_第4页

Thermal insulation coating using natural stone powder-epoxy composite for room temperature reduction 保温涂料采用天然石粉-环氧树脂复合材料进行室温还原

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2304457b

Redi Bintarto, Anindito Purnowidodo, Widodo Dwi, Marco Talice, Djarot Darmadi

引用次数: 0

Design a new hybrid controller based on an improvement version of grey wolf optimization for trajectory tracking of wheeled mobile robot 设计了一种基于改进灰狼优化的轮式移动机器人轨迹跟踪混合控制器

IF 1.6

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2302140h

R. Hussein

{"title":"Design a new hybrid controller based on an improvement version of grey wolf optimization for trajectory tracking of wheeled mobile robot","authors":"R. Hussein","doi":"10.5937/fme2302140h","DOIUrl":"https://doi.org/10.5937/fme2302140h","url":null,"abstract":"Nonholonomic wheeled mobile robots are considered to be multi-input multi-output systems that are performed in varying environments. This work presents the trajectory tracking control of a nonholonomic wheeled mobile robot (WMR). The Kinematic and the dynamic models of the robot were derived. A new hybrid controller was designed, which consisted of two controllers based on an optimization algorithm to solve the trajectory tracking problem. The first controller is the Fractional order PID controller, which is based on the kinematic model and has been applied to control the linear and the angular robot velocities, while the second controller is a linear quadratic regulator (LQR) and is based on the dynamic model used to control the motors' torques. A new, improved version of grey wolf optimization wasadopted to tune the parameters of the hybrid controller. The main goals of this improvement are rapid convergence towards a solution, reducing the effect of the wolves' random motion, and balancing exploitation and exploration processes. MATLAB software was used to simulate the results under an S-shape trajectory and to evaluate the robustness and performance of the proposed control unit. The simulation results demonstrated the adopted control system's activity and efficiency based on the mean square error (MSE) between the desired and actual trajectory. The values of MSE of trajectory in the X and Y directions and the orientation are [6.589*10-4(m) 8.421*10-5(m) 0.00401(rad)]T . Also, the adopted control system can generate smooth values of the control input signals without sharp spikes. The performance of the presented control system has been verified and compared with the results obtained from the other two control systems, and the simulation results have offered the superiority and effectiveness of the hybrid controller of this work.","PeriodicalId":12218,"journal":{"name":"FME Transactions","volume":"1 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83634754","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

Static behaviour of functionally graded rotating cantilever beams using B-spline collocation technique 基于b样条配置技术的功能梯度旋转悬臂梁的静力性能

IF 1.6

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2303347c

Shashi Chichkhede, D. Mahapatra, Shubhashis Sanyal, Shubhankar Bhowmick

引用次数: 0

Theoretical model of high-speed tracked vehicle general motion 高速履带车辆一般运动理论模型

IF 1.6

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2303449m

S. Milićević, I. Blagojević

引用次数: 0

Differences in Kaizen implementation between countries and industry types in multinational supply chain 跨国供应链中不同国家、不同行业改善实施的差异

IF 1.6

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2302183s

V. Spasojević-Brkić, B. Tomić, Martina Perišić, Nemanja Janev

{"title":"Differences in Kaizen implementation between countries and industry types in multinational supply chain","authors":"V. Spasojević-Brkić, B. Tomić, Martina Perišić, Nemanja Janev","doi":"10.5937/fme2302183s","DOIUrl":"https://doi.org/10.5937/fme2302183s","url":null,"abstract":"Previous research shows that Kaizen's benefits are multiple and evident, but its practices in the supply chain have been sufficiently examined now. Conversely, we are witnessing numerous issues in contemporary global supply networks. In this survey, after conducting a literature review, three research questions regarding Kaizen modes of usage were formulated and tested on the sample of 195 enterprises that are part of the global supply chain, located in 31 countries, and active in two different types of industries - aircraft, and transportation. A combined approach containing descriptive statistics, reliability, factor analysis, and statistical hypothesis testing by Kruskal-Wallis one-way ANOVA and Mann-Whitney U tests were used. Results show significant differences between Kaizen practices applied in countries such as Italy, the United Kingdom, Canada, the USA, Japan, and China, where national and corporate cultures differ. Kaizen implementation significantly differs between companies operating in the aircraft and transportation sectors, which is unsurprising since aircraft industry has a higher formalization level. The goal to determine the differences in Kaizen practices around the globe was fulfilled since statistically significant differences indicate the importance of the contextual factors and connect adverse and Kaizen events.","PeriodicalId":12218,"journal":{"name":"FME Transactions","volume":"15 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76711119","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

Numerical investigation of single and multiple impinging synthetic jets on the flow field and heat transfer at low orifice-to-plate distances 低孔板距离下单、多碰撞合成射流对流场和传热的数值研究

IF 1.6

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2303273e

Eda Ergur, T. Calisir

引用次数: 0

Empirical equation of the Mach number as a function of the stagnation pressure ratio for a quasi-one-dimensional compressible flow 准一维可压缩流马赫数随滞止压力比的经验方程

IF 1.6

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2302149t

S. Tolentino

引用次数: 1

An analysis of causal relationships among challenges impeding adoption of Industry 4.0 through DEMATEL technique 通过DEMATEL技术分析阻碍工业4.0采用的挑战之间的因果关系

IF 1.6

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2302262b

Vaibhav Bisht, V.G. Sridhar, M. Janardhanan

{"title":"An analysis of causal relationships among challenges impeding adoption of Industry 4.0 through DEMATEL technique","authors":"Vaibhav Bisht, V.G. Sridhar, M. Janardhanan","doi":"10.5937/fme2302262b","DOIUrl":"https://doi.org/10.5937/fme2302262b","url":null,"abstract":"Industries must be more innovative than ever before to face rising global competition and stay in the market today. These now aim to enhance operational efficiency by using different advanced technology tools and techniques of Industry 4.0, satisfying the varying customer needs with products of the highest quality offered at minimal costs. With different bottlenecks faced in industrial operations, the large-scale adoption of such systems faces multiple impediments relevant to the country's socioeconomic make-up, and therefore, nine pertinent barriers deterring India's transition to Industry 4.0 with varying interdependencies and importance are identified. Data collected from multiple industry experts is subsequently analyzed using the DEMATEL (Decision Making Trial and Evaluation Laboratory) technique to identify the key barriers having the biggest influence over India's industrial landscape based on their cause effect value and importance scores. The study conclusively ends with discussing the analysis findings for use in solving complex industry problems and identifying new roles, work environments, and skills required in different domains for the adoption of systems of Industry 4.0 in India.","PeriodicalId":12218,"journal":{"name":"FME Transactions","volume":"103 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75660513","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

Investigation on machinability of aluminum 7075 under dry environment 7075铝合金在干燥环境下的可加工性研究

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2304470m

Raymond Magabe, Kapil Gupta

{"title":"Investigation on machinability of aluminum 7075 under dry environment","authors":"Raymond Magabe, Kapil Gupta","doi":"10.5937/fme2304470m","DOIUrl":"https://doi.org/10.5937/fme2304470m","url":null,"abstract":"Aluminum is a light and soft material that is difficult to machine. It is the most produced non-ferrous metal and undergoes extensive machining for the development of a wide range of products. Advances in industry inspire the need to find sustainable ways of machining aluminum and its alloys using conventional machining processes. In the study reported in this paper, two sets of experiments were conducted to investigate the machinability of aluminum 7075 using a plain carbide tool under a dry environment, i.e., no lubrication. In the first set, four rough experiments were conducted where three important machining parameters, i.e., cutting speed CS (115-495 RPM), depth of cut DOC (0.8-1.5 mm), and Feed rate FR (0.08-0.2 mm/rev) have been varied at two levels each to check the behavior of responses or machinability indicators, i.e., surface roughness and tool wear, at machining parameters' highest and lowest values. Based on the results of the first set of experiments, the ranges and levels of parameters have been fixed in the second set for a detailed study of the machinability of aluminum. A total of nine experiments based upon Taguchi's robust design of experiment technique with orthogonal array L9 have been conducted where an additional machining parameter, i.e., machining time MT, has been introduced. The effect of machining parameters on tool wear and surface roughness has been studied in detail, and it is found that the dry machining of aluminum is possible without the early failure of the tool. Dry machining with low values of CS, DOC, FR, and medium MT is desirable for better machinability, i.e., minimum roughness and tool wear, an optimum combination of machining parameter cutting speed-115 RPM, depth of cut-0.8 mm, feed rate-0.12 mm/rev, and machining time-90 seconds. The findings of the present work will assist engineers and researchers in attaining quality, productivity, and sustainability while manufacturing parts and components from aluminum to be used in the automotive, defense, and aerospace sectors.","PeriodicalId":12218,"journal":{"name":"FME Transactions","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135611937","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

Using an HSV-based approach for detecting and grasping an object by the industrial manipulator system 采用基于hsv的方法实现工业机械手系统对物体的检测和抓取

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2304512n

Ha Ngo

引用次数: 0