Papers by Keyword: Process

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Authors: Matej Daňo, Natália Horňáková, Helena Vidová, Sebastian Saniuk
Abstract: The presented paper is aimed at assessing the level of performance through an industrial company endpoints indicators, in which the efficiency and performance of business processes is transformed to. The paper describes the concept of company performance based on theoretical knowledge of authors from Slovakia as well as developed economies. It also provides concrete examples of financial and non-financial indicators and informs professionals and general public with a number of additional indicators. Likewise the paper characterizes most famous concepts of measurement and management of company performance based on results of a survey which was conducted by the Institute of Industrial Engineering and Management MTF STU in Trnava, as a part of the research project VEGA No. 1/0787 / 12th. Authors attach great importance to measure the process performance as an important part of performance measurement of an industrial company. They introduce the procedures for measuring the manufacturing processes, whole range of specific performance indicators of production processes as well as different methods of measuring the performance of production processes and the company as a whole unit. The level of significance is designed for each proposed indicator and measurement result consists of value reflecting the overall company performance (various departments), which can be used as a benchmark for individual departments or plants within a particular multinational group.
Authors: Biao Meng, Ye Guang Yang
Abstract: By advanced research and technology breakthrough to service architecture and related critical technologies, the 3D process design environment based on SOA is built. These are finished to integrate initially for concurrent collaborative platform crossed system or department and to service the functions frame of integrated discuss, collaborative modeling & simulation and collaborative PDM/PLM. This design environment is very important to resource integration, functions complemented and collaborative process among partners in virtual enterprise.
Authors: You Shun Luan
Abstract: A novel process for methanol and dimethyl ether(DME) synthesis was developed, in which two methanol-synthesis fixed-bed reactors were followed by an identical one for DME synthesis with cooling sections in between. Self-made Cu-Zn-Al catalyst for methanol synthesis and DME synthesis were used in this process. Tests of catalysts showed that both of them had activity and favorable stability and wound be capable of long-term industrial operation under the conditions. The investigation of processing parameters and stability led us safely to ensure the optimal condition: T1-200oC,T2-190 °C,T3-210 °C,5Mpa,total Space Velocity-1000h-1(T1,T2,T3 defined as temperature of catalytic beds in three serial reactors). Under that the catalytic system kept stable during the investigated hours.
Authors: Gorgees Adam, De Liang Zhang, Jing Liang, I. Macrae
Abstract: Titanium and titanium alloys are the materials of choice for many industrial applications because of their attractive combination of low density, good mechanical properties, and high corrosion resistance, and titanium is the fourth most abundant metal in the earth crust (0.86 % by weight) behind aluminum, iron, and magnesium. However, titanium and titanium alloys are not widely. The reason for this is the high cost of titanium and titanium alloys! The cost gap for titanium and titanium alloys widens when they are used for fabricating components and structures. Consequently, much effort has been expended to reduce the cost of titanium and titanium alloys. In conjunction with the University of Waikato, Titanox Development Limited-New Zealand has been successful in creating a modified novel process to produce TiAl based alloy powders with different particle sizes and compositions at low cost. The process offers several benefits to the titanium industry the most significant one of which is that it displays the potential to significantly reduce the commercial production costs of Ti-Al based alloys. This paper describes the Titanox Development Limited technology in brief, and shows how it can economically produce titanium alloy powders for different industrial applications and making titanium alloys affordable. The process has been disclosed in a PCT (Patent Corporation Treaty) application which was approved in 2004 [1], and the related patent applications either have been approved or are being filed in different countries.
Authors: A.M. Stoneham
Authors: Xi Na Huang, Zhi Ping Zhong, Wei Wang, Feng Jiao Li, De Hua Qiu, Chong Peng
Abstract: Liquid forging is a new technology of plastic forming. It is a kind of bulk forming process with liquid metal with high-quality and efficiency and it has the characteristics of both die casting and forging. This paper will discuss the liquid forging process, die design, simulation and optimization of liquid forging [1].
Authors: S. Nallusamy, K. Balakannan, R. Suganthini Rekha, K. Balasubramanian
Abstract: Presently the prime task of manufacturing engineers is to make products within a short span by maintaining the best quality at minimum cost. Recent market trends confirm the continuation of New Product Development (NPD) as a change agent for many more years to come with a focus on high product variety and shorter product life cycles. The effective introduction of new products is critical to the performance of manufacturing industries in more industrial sectors. It is a measure of an industry's strength in innovation and competitiveness in NPD. Manufacturing industries are forced to accept that the focus on NPD is on increasing product variety and shorter product life cycle. For many manufacturing industries, mass customization with "voice of customer", agility and leanness are some of the vital prerequisites to survive in the current global competitive environment. NPD is no longer an isolated process; it requires close integration between all active members within the supply chain such as customers, suppliers, manufacturers, etc. and must be viewed as an integrated business process. The proper use of advanced IT has enhanced NPD in manufacturing enterprises. It facilitates shorter product lead-times and increases responsiveness to changes in the market along with improved product quality, as well as maintaining low product cost.
Authors: Dayang Nur Salmi Dharmiza Awang Salleh, Rohana Sapawi
Abstract: Recent technology requires multistandard Radio Frequency (RF) chips for multipurpose wireless applications. In RF circuits, a low-noise amplifier (LNA) plays the key role in determining the receiver’s performance. With CMOS technology scaling, various designs has been adopted to study circuit’s characteristic and variation. In this paper, we present the results of scalable wideband LNA design based on complementary metal oxide semiconductor (CMOS), with its variance study. The design was fabricated in 180nm, 90nm, 65nm and 40nm CMOS technology.
Authors: Reimund Neugebauer, Carsten Hochmuth, René Schneider
Abstract: Cylinder bore finishing requirements are defined by quality features such as roundness and cylindricity as well as by the manifestation of the surface profile. Honing is a proven manufacturing method s to achieve this. Undesirable distortions of the cylinder shape occur under operating conditions in a reciprocating internal combustion engine. These negatively affect the tribological system of piston, piston ring, and cylinder bore. As a result, efficiency deteriorates and oil consumption rises. The cylinder crank cases are finished in a defined tensioned state to compensate for distortions. This results in a highly complex manufacturing process and is only suited for compensating static distortions. Further increasing machining requirements resulting from strategies such as lightweight construction, downsizing, and friction reduction are pushing conventional honing methods to their technological limits.Adaptronic form honing constitutes a production engineering approach to manufacturing a free form in the cylinder bore. The objective is to keep inverse distortion geometries in store as macro shapes. These will then represent ideal cylinder shapes under the influence of distortion mechanisms in a defined engine operating range. Tool and process development and the analysis of machining results with respect to productivity, shape accuracy, and surface topography are presented and viewed as potential options for optimizing the tribological system of piston, piston ring, and cylinder bore. Other options such as shortening the process chain will be derived.
Authors: Bruno C. De Cooman, H.K.D.H. Bhadeshia, Frédéric Barlat
Abstract: The present contribution highlights the approach to multi-scale steel design used at the Graduate Institute of Ferrous Technology (GIFT). Multi-scale modeling combining ab-initio methods, molecular dynamics, crystal plasticity modeling etc. enables GIFT researchers to gain a better fundamental understanding of phase and lattice stability, magnetic properties and basic mechanical constants. In addition, these methods allow for the reliable determination of critical material parameters. The opportunities for the development of new steel grade is thereby greatly enhanced and, when these new materials-oriented methods are combined with the more traditional engineering modeling methods, the challenges related to the large scale production of new steel grades can also be addressed.
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