IOP Conf. Series: Materials Science and Engineering最新文献_第4页

Friction behaviour of aluminium composites mixed with carbon fibers with different orientations 不同取向碳纤维混合铝复合材料的摩擦性能

IOP Conf. Series: Materials Science and Engineering Pub Date : 2016-08-01 DOI: 10.1088/1757-899X/145/2/022035

R. Caliman

引用次数: 2

Mathematical modelling to predict the roughness average in micro milling process 微铣削过程平均粗糙度预测的数学模型

IOP Conf. Series: Materials Science and Engineering Pub Date : 2016-08-01 DOI: 10.1088/1757-899X/145/7/072004

C. Burlacu, O. Iordan

{"title":"Mathematical modelling to predict the roughness average in micro milling process","authors":"C. Burlacu, O. Iordan","doi":"10.1088/1757-899X/145/7/072004","DOIUrl":"https://doi.org/10.1088/1757-899X/145/7/072004","url":null,"abstract":"Surface roughness plays a very important role in micro milling process and in any machining process, because indicates the state of the machined surface. Many surface roughness parameters that can be used to analyse a surface, but the most common surface roughness parameter used is the average roughness (Ra). This paper presents the experimental results obtained at micro milling of the C45W steel and the ways to determine the Ra parameter with respect to the working conditions. The chemical characteristics of the material were determined from a spectral analysis, chemical composition was measured at one point and two points, graphical and tabular. A profilometer Surtronic 3+ was used to examine the surface roughness profiles; the effect of independent parameters can be investigated and can get a proper relationship between the Ra parameter and the process variables. The mathematical model were developed, using multiple regression method with four independent variables D, v, ap, fz; the analysis was done using statistical software SPSS. The ANOVA analysis of variance and the F- test was used to justify the accuracy of the mathematical model. The multiple regression method was used to determine the correlation between a criterion variable and the predictor variables. The prediction model can be used for micro milling process optimization.","PeriodicalId":359151,"journal":{"name":"IOP Conf. Series: Materials Science and Engineering","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126645658","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: 3

A Multi-Agent Approach to the Simulation of Robotized Manufacturing Systems 模拟机器人制造系统的多代理方法

IOP Conf. Series: Materials Science and Engineering Pub Date : 2016-08-01 DOI: 10.1088/1757-899X/145/5/052011

K. Foit, A. Gwiazda, W. Banaś

{"title":"A Multi-Agent Approach to the Simulation of Robotized Manufacturing Systems","authors":"K. Foit, A. Gwiazda, W. Banaś","doi":"10.1088/1757-899X/145/5/052011","DOIUrl":"https://doi.org/10.1088/1757-899X/145/5/052011","url":null,"abstract":"The recent years of eventful industry development, brought many competing products, addressed to the same market segment. The shortening of a development cycle became a necessity if the company would like to be competitive. Because of switching to the Intelligent Manufacturing model the industry search for new scheduling algorithms, while the traditional ones do not meet the current requirements. The agent-based approach has been considered by many researchers as an important way of evolution of modern manufacturing systems. Due to the properties of the multi-agent systems, this methodology is very helpful during creation of the model of production system, allowing depicting both processing and informational part. The complexity of such approach makes the analysis impossible without the computer assistance. Computer simulation still uses a mathematical model to recreate a real situation, but nowadays the 2D or 3D virtual environments or even virtual reality have been used for realistic illustration of the considered systems. This paper will focus on robotized manufacturing system and will present the one of possible approaches to the simulation of such systems. The selection of multi-agent approach is motivated by the flexibility of this solution that offers the modularity, robustness and autonomy.","PeriodicalId":359151,"journal":{"name":"IOP Conf. Series: Materials Science and Engineering","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126292600","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

Testing and analysis of a modernized freight wagon's elements flammability 某现代化货车部件易燃性试验与分析

IOP Conf. Series: Materials Science and Engineering Pub Date : 2016-08-01 DOI: 10.1088/1757-899X/145/4/042026

M. Płaczek, A. Wróbel, A. Baier

{"title":"Testing and analysis of a modernized freight wagon's elements flammability","authors":"M. Płaczek, A. Wróbel, A. Baier","doi":"10.1088/1757-899X/145/4/042026","DOIUrl":"https://doi.org/10.1088/1757-899X/145/4/042026","url":null,"abstract":"Paper concerns an issue of freight wagon modernization using composite materials. The goal of the project is to elongate the period between repairs (by better corrosion protection) and improve conditions of exploitation of modernized freight wagons (for example easier unloading during winter conditions - no freezes of the charge to the freight wagon body shell). Application of the composite panels to the freight wagon's body shell was proposed as the solution that can solve mentioned problems. The composite panels composed of fiberglass and epoxy resin were proposed. They will be mounted on the body shell using rivet nuts. What is more the body shell of the modernized freight wagon will be painted using an anti-corrosion agent. In this paper the analysis of a flammability of the proposed composition (the composite plate made of fiberglass and epoxy resin mounted to the steel sheet with additional anticorrosion agent) is presented. In the paper results of laboratory tests conducted according to international standards are presented. A series of samples of elements of modernized freight wagons was tested using the created laboratory stand. Obtained results were averaged and the proposed material was assigned to the one of the class of materials for their combustibility.","PeriodicalId":359151,"journal":{"name":"IOP Conf. Series: Materials Science and Engineering","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122234281","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: 2

Impact of technical and technological changes on energy efficiency of production company - case study 技术和工艺变革对生产企业能源效率的影响-案例研究

IOP Conf. Series: Materials Science and Engineering Pub Date : 2016-08-01 DOI: 10.1088/1757-899X/145/6/062007

K. Szwedzka, J. Gruszka, P. Szafer

引用次数: 3

Study for elevator cage position during the braking period 电梯轿厢制动时的位置研究

IOP Conf. Series: Materials Science and Engineering Pub Date : 2016-08-01 DOI: 10.1088/1757-899X/144/1/012010

M. Ungureanu, I. Crăciun, M. Banica, A. Dăscălescu

引用次数: 3

Gaining a Competitive Edge through Action Design Research 通过行动设计研究获得竞争优势

IOP Conf. Series: Materials Science and Engineering Pub Date : 2016-08-01 DOI: 10.1088/1757-899X/145/6/062008

L. Alexa, M. Alexa, S. Avasilcai

{"title":"Gaining a Competitive Edge through Action Design Research","authors":"L. Alexa, M. Alexa, S. Avasilcai","doi":"10.1088/1757-899X/145/6/062008","DOIUrl":"https://doi.org/10.1088/1757-899X/145/6/062008","url":null,"abstract":"The current business environment is characterized by increased competition and highly innovative approach, in order to create products and services to better respond to the costumers’ needs and expectations. In this specific context, the research approaches need to be more flexible and business oriented and so, throughout the paper we have used a research method that combines design research and action research, named Action Design Research which is a research method used for generating prescriptive design knowledge through building and evaluating IT artifacts in an organizational setting [1]. Following the Action Design Research stages and principles: problem identification, building, intervention and evaluation, reflection and learning and formalization of learning, the research team has developed an online instrument used to actively involve the consumer in the product development process, in order to generate a better consumers insight regarding their needs and desires and to design and/or adjust the product accordingly. The customer engagement IT tool created and tested by using Action Design Research, E-PICUS, has been developed within the framework of the research project „E-solutions for innovation through customer pro-active involvement in value creation to increase organisational competitiveness (E-PICUS)”, PN- II-PT-PCCA-2013-4-1811, currently undergoing.","PeriodicalId":359151,"journal":{"name":"IOP Conf. Series: Materials Science and Engineering","volume":"164 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116057645","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

Wear and Durability Variation Compared with Thickness of Cutting Inserts Coated with AlTiN Thin Films AlTiN薄膜涂层切削齿厚度对磨损和耐久性的影响

IOP Conf. Series: Materials Science and Engineering Pub Date : 2016-08-01 DOI: 10.1088/1757-899X/145/7/072002

A. Bădănac, O. Lupescu, V. Manole, C. Ungureanu, M. Popa

{"title":"Wear and Durability Variation Compared with Thickness of Cutting Inserts Coated with AlTiN Thin Films","authors":"A. Bădănac, O. Lupescu, V. Manole, C. Ungureanu, M. Popa","doi":"10.1088/1757-899X/145/7/072002","DOIUrl":"https://doi.org/10.1088/1757-899X/145/7/072002","url":null,"abstract":"During the use of cutting tools in the cutting process, they lose their exploitation indices after a certain range of working, due to the occurrence of wear phenomenon. Wear occurs due to the parameters variation of the working regimes, fact that involves in order to not overcoming the limits of the maximum allowable wear, application of methods, to increase their durability. In order to increase the cutting tools durability are known various methods of surface coating with materials with better properties than the material of the cutting tool. In the case of cutting inserts, are known many researches concerning their coating by vacuum deposition of thin layers of metal, methods as: physical vapour deposition and chemical vapour deposition. The coatings realized by vacuum deposition have gained special attention because of their unique physical and chemical properties for example excellent resistance to oxidation at high temperatures. The main characteristics which are checked in the deposition process of thin layers are: thickness and the wear resistance. In this study the authors carried out researches regarding the coatings of AlTiN in thin layers, on surface of some cutting inserts. It was measured the variation of the wear and durability compared with the thickness of AlTiN thin layers deposited on the cutting inserts.","PeriodicalId":359151,"journal":{"name":"IOP Conf. Series: Materials Science and Engineering","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116709878","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

The influence of milling-burnishing successive and simultaneous processes on the material hardness 铣削-抛光连续和同时加工对材料硬度的影响

IOP Conf. Series: Materials Science and Engineering Pub Date : 2016-08-01 DOI: 10.1088/1757-899X/145/2/022009

C. Grigoras, G. Brabie, B. Chirita

{"title":"The influence of milling-burnishing successive and simultaneous processes on the material hardness","authors":"C. Grigoras, G. Brabie, B. Chirita","doi":"10.1088/1757-899X/145/2/022009","DOIUrl":"https://doi.org/10.1088/1757-899X/145/2/022009","url":null,"abstract":"Recent developments in the field of bio-engineering allow the use of magnesium alloys as a substitute for medical implants. The issue with such alloys is the degradation rate witch has to be improved in order to provide the necessary support for the entire duration of the bone fraction healing. For improving the bone shielding heat treatment does not represent a solution, but chemical and/or mechanical do. One mechanical process that has excellent result is burnishing, but this process is difficult to be implemented on a milling machine. Therefore, it was necessary that a new tool and tool holder to be developed, that allow the simultaneous process to take place. A high-pressure hydraulic roller burnishing tool with a special tool holder was used on a CNC milling machine. The material used for this study is magnesium alloy AZ31B-F, and one of the main purposes was to improve the material hardness (HV). The milling-burnishing parameters that where varied are the speed and feed, burnishing pressure and depth, type of process (successive or simultaneous), machining direction and the material hardness after milling. The results were analyzed as percentage improvement between the milling and burnishing measured values.","PeriodicalId":359151,"journal":{"name":"IOP Conf. Series: Materials Science and Engineering","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128129140","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

The use of numerical programs in research and academic institutions 在研究和学术机构中使用数值程序

IOP Conf. Series: Materials Science and Engineering Pub Date : 2016-08-01 DOI: 10.1088/1757-899X/145/8/082002

A. Scupi

{"title":"The use of numerical programs in research and academic institutions","authors":"A. Scupi","doi":"10.1088/1757-899X/145/8/082002","DOIUrl":"https://doi.org/10.1088/1757-899X/145/8/082002","url":null,"abstract":"This paper is conceived on the idea that numerical programs using computer models of physical processes can be used both for scientific research and academic teaching to study different phenomena. Computational Fluid Dynamics (CFD) is used today on a large scale in research and academic institutions. CFD development is not limited to computer simulations of fluid flow phenomena. Analytical solutions for most fluid dynamics problems are already available for ideal or simplified situations for different situations. CFD is based on the Navier- Stokes (N-S) equations characterizing the flow of a single phase of any liquid. For multiphase flows the integrated N-S equations are complemented with equations of the Volume of Fluid Model (VOF) and with energy equations. Different turbulent models were used in the paper, each one of them with practical engineering applications: the flow around aerodynamic surfaces used as unconventional propulsion system, multiphase flows in a settling chamber and pneumatic transport systems, heat transfer in a heat exchanger etc. Some of them numerical results were validated by experimental results. Numerical programs are also used in academic institutions where certain aspects of various phenomena are presented to students (Bachelor, Master and PhD) for a better understanding of the phenomenon itself.","PeriodicalId":359151,"journal":{"name":"IOP Conf. Series: Materials Science and Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114605915","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: 2