FME Transactions最新文献_第5页

Air traffic modernization and control: ADS-B system implementation update 2022: A review 空中交通现代化和管制:ADS-B系统实施更新2022:综述

IF 1.6

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2301117k

Dejan Kožović, Dragan Đurđević, Mirko Dinulović, S. Milić, B. Rašuo

引用次数: 2

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

Numerical analysis of the shock train evolution in planar nozzles with throat length 具有喉道长度的平面喷管激波序列演化的数值分析

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2304595t

San Tolentino, Jorge Mírez, Simón Caraballo

引用次数: 0

Increasing performance of spacecraft active fault-tolerant control using neural networks 利用神经网络提高航天器主动容错控制性能

IF 1.6

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2301039m

R. Moradi

引用次数: 0

Numerical investigation on effect of spark plug configuration on performance in an engine cylinder 火花塞结构对发动机缸内性能影响的数值研究

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2304585m

Mehul Bakhshi, Ranjan Pritanshu, Anuj Shukla

{"title":"Numerical investigation on effect of spark plug configuration on performance in an engine cylinder","authors":"Mehul Bakhshi, Ranjan Pritanshu, Anuj Shukla","doi":"10.5937/fme2304585m","DOIUrl":"https://doi.org/10.5937/fme2304585m","url":null,"abstract":"A numerical investigation of combustion inside single and twin-spark engines was performed to study the effect of a spark plug, positions and spark timings on engine performance. Improvement in engine performance is one of the automotive industry's primary research areas. Consequently, the study's results can be utilised to optimise engine configurations to achieve maximum performance. The investigation was conducted using a finite volume-based open-source software, OpenFOAM, for computational simulations. Simulations were conducted using the XiEngineFOAM solver with a transport equation for modelling flame fronts. The Standard k-e turbulence model was used to predict turbulence parameters. The simulation was conducted for compression and power stroke (crank angle between - 180° and 180°), assuming an even distribution of the air-fuel mixture within the pentroof 4-valve engine cylinder. Simulations were conducted for four cases, including variations in the position and timing of spark plugs in single-spark and twin-spark engines. According to the results of the simulations, the single-spark engine provides the best performance when the spark plug is ignited early and positioned at the cylinder's centre. When placed at an optimal position determined by flame travel and collision, the twin-spark engine gives the best performance at the highest difference between the spark timings of the two spark plugs.","PeriodicalId":12218,"journal":{"name":"FME Transactions","volume":"4 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":"135611035","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

Method to build a generalized table of parameters in engineering design of technical systems: Lattice structure as a case study 技术系统工程设计中广义参数表的建立方法:以格构结构为例

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2304480a

Mohamed Abdellatif, Hicham Chibane, Sébastien Dubois, Guio de, Thierry Roland

引用次数: 0

Control design using PID with state feedback for Air-breathing Hypersonic Vehicle 吸气式高超声速飞行器状态反馈PID控制设计

IF 1.6

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2302221s

Rites Singh, O. Prakash, S. Joshi

引用次数: 0

Comparative computational analysis of NATO 5.56 mm, APM2 7.62 mm and AK-47 7.82 mm bullet moving at Mach 2.0 in close vicinity to the wall 北约5.56 mm、APM2 7.62 mm和AK-47 7.82 mm子弹在近墙处以2.0马赫运动的对比计算分析

IF 1.6

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2301081s

Samruddhi Salunke, Suryapratap S. Shinde, Tanmay B. Gholap, D. Sahoo

{"title":"Comparative computational analysis of NATO 5.56 mm, APM2 7.62 mm and AK-47 7.82 mm bullet moving at Mach 2.0 in close vicinity to the wall","authors":"Samruddhi Salunke, Suryapratap S. Shinde, Tanmay B. Gholap, D. Sahoo","doi":"10.5937/fme2301081s","DOIUrl":"https://doi.org/10.5937/fme2301081s","url":null,"abstract":"Comparative Computational Analysis of NATO 5.56 mm, APM2 7.62 mm and AK-47 7.82 mm Bullet Moving at Mach 2.0 in Close Vicinity to the Wall Various rifles require unique bullets. Each bullet has its capability, speed, and impact on the target. In metropolitan warfare, several bullets are shot close to the solid walls. These near walls affect the pressure distribution over the entire asymmetric bullet. The influence of a reflected shock depends on the angle at which it was reflected and the altitude from the ground to the body of the bullet. The current research emphasizes three bullets of varying diameters used in different types of guns. The first bullet is of NATO 5.56 mm, the second is APM2's 7.62 mm bullet, and the third is a 7.82 mm bullet from an AK-47 rifle. For 2-D steady computations, the supersonic speed of Mach 2 is considered to analyze the flowfield across all three bullets. The heights of the bullet are taken considering the height-to-diameter ratios (h/D ratio) from 0.5 to 3.0. The Mach contour drawn from the numerical simulations is used to analyze the flowfield, and aerodynamic coefficients like lift, drag, and moment are also plotted to analyze the ground effects on the projectile. The comparative analysis showed that the trend of shock wave reflections was similar in the bullets till h/D of 1.5. The APM2 bullet experienced maximum drag, followed by AK-47's 7.82 mm and NATO's 5.56 mm bullet. The 7.82 mm bullet experienced maximum lifting force at h/D = 1.0 due to its larger surface area than the other two ammo. The 7.82 mm bullet experienced a nose-up moment, whereas the other two faced a nose-down moment. As the altitude of the bullets from the ground increased, the ground effect appearing on the bullets reduced. The present comparative analysis research shows that it is suitable to fire an AK-47 bullet from h/D greater than 2.0 and the other two bullets from an altitude greater than or equal to h/D of 3.0.","PeriodicalId":12218,"journal":{"name":"FME Transactions","volume":"27 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76497177","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

Application of additive technology and reverse engineering in the realization of damaged obsolete parts 增材技术与逆向工程在破损过时件实现中的应用

IF 1.6

FME Transactions Pub Date : 2023-01-01 DOI: 10.5937/fme2301031v

M. Vorkapić, Danijela Živojinović, D. Kreculj, Toni Ivanov, Marija Baltić, A. Simonović

引用次数: 1