scholarly journals Methodology for Searching Representative Elements

2019 ◽  
Vol 9 (17) ◽  
pp. 3482 ◽  
Author(s):  
Jure Murovec ◽  
Janez Kušar ◽  
Tomaž Berlec
Keyword(s):  
Production Process ◽  
Material Flow ◽  
Global Market ◽  
Huge Number ◽  
Industrial Environment ◽  
Loading Function ◽  
Permanent Improvement ◽  
Flow Through ◽  
Abc Analysis ◽  
Short Time

Companies have to assure their share on the global market, meet customer demands and produce customer-tailored products. With time and production line updates, the layout becomes non-optimal and product diversity only increases this problem. To stay competitive, they need to increase their productivity and eliminate waste. Due to a variety of products consisting of similar components and variants thereof, a huge number of various elements are encountered in a production process, the material flow of which is hardly manageable. Although the elements differ from each other, their representative elements can be defined. This paper will illustrate a methodology for searching representative elements (MIRE), which is a combination of the known Pareto’s analysis (also known as ABC analysis or 20/80 rule) and a calculation of a loading function, that can be based on any element feature. Results of using the MIRE methodology in a case from an industrial environment have shown that the analysis can be carried out within a very short time and this provides for permanent analysis, optimisation and, consequently, permanent improvement in the material flow through a production process. The methodology is most suitable for smaller companies as it enables rapid analysis, especially in cases when there is no pre-recorded material flow.

Using simulation in layout verification of solar module assembly workshop

2018 ◽  
Vol 09 (02) ◽  
pp. 1850017
Author(s):  
Zhongqing Liao ◽  
Ming Cong ◽  
Dong Liu ◽  
Fanjie Meng
Keyword(s):  
Production Process ◽  
Material Flow ◽  
Optimal Number ◽  
Solar Module ◽  
Reusable Component ◽  
Work In Process ◽  
3D Simulation Model ◽  
Systematic Layout Planning ◽  
Short Time ◽  
Component Models

Facility layout problem (FLP) contemplates the optimization of space utilization, costs, and material flow. Commercial simulation softwares are commonly used to validate layouts by simulating the real world material flow and production process. To validate a layout scenario of a solar module assembly workshop, a 3D simulation model is presented which was designed on VisualComponents software. To begin with, we introduce the layout characteristics and use the systematic layout planning (SLP) method to design the block layout of workshop. Then, we built components library which contains all the facilities needed in the production line, specifically conveyors, processing equipments, robots, buffers. Finally, we have established a simulation layout model using the components in the customized library according to the block layout, and configured the components which were allocated in the layout by setting the parameters and building the connection between components via signal. To improve the performance of the workshop, we have found the best work-in-process (WIP) value for the workshop and the optimal number of workers. Additionally, the layout model was used to test collision and reachability. It demonstrated the production process in a realistic simulation environment which helped in the sales process as well. The reusable component models we have built make it easy to build a layout within a short time and validate the effectiveness of the layout scenarios for any other projects.

scholarly journals Possible Chromatographie Effect of Liquid-Crystalline Permeation

1973 ◽  
Vol 28 (12) ◽  
pp. 1967-1968 ◽  
Author(s):  
W. Helfrich
Keyword(s):  
Material Flow ◽  
Liquid Crystalline ◽  
Permeation Rate ◽  
Flow Through

Permeation, i. e. material flow through cholesteric and smectic layers, may vary in speed for the components of a mixture. We derive qualitative formulas for the permeation rate of solute molecules in cholesterics as a function of their size. The possibility of a new kind of chromatography based on permeation in cholesterics or smectics is discussed.

scholarly journals PELATIHAN MATERIAL FLOW COST ACCOUNTING (MFCA) BAGI PARA UMKM DI DKI JAKARTA

2022 ◽  
Vol 3 (2) ◽  
pp. 197-202
Author(s):  
Virna Sulfitri ◽  
Henik Hari Astuti ◽  
Budi Santosa
Keyword(s):  
Production Process ◽  
Community Service ◽  
Material Flow ◽  
Cost Accounting ◽  
Face To Face ◽  
The Public ◽  
Direct Contribution ◽  
Effectiveness And Efficiency

Community Service is one part of the direct contribution from academics, in this case the Faculty of Economics and Business, Trisakti University to the community. On this occasion the Trisakti University FEB team had the opportunity to provide training on Material Flow Cost Accounting (MFCA) for MSMEs. This training is considered important considering that the understanding of MSME actors in terms of the flow cost of material is still very minimal, so that in the implementation of their business there are still very few who apply it in the production process. This training aims to educate MSME actors in terms of flow cost accounting for the use of their production materials, MSMEs can sort out the types and types of materials to be used so as to increase the effectiveness and efficiency of production to increase sales and business profits. PKM training will be carried out using an online method considering the conditions of the COVID-19 pandemic, which until now has not allowed face-to-face/off-line training. The output of this PKM will be published to the public so that it can provide wider benefits.

scholarly journals Speculation, segregation and (absence of) conflicts: In the production of the urban space of Palmas / TO

2017 ◽  
Vol 2 (3) ◽  
Author(s):  
Ana Carla de Lira Bottura
Keyword(s):  
Production Process ◽  
Urban Space ◽  
Western World ◽  
New Town ◽  
Doctoral Research ◽  
The Social ◽  
Object Of Study ◽  
Space Production ◽  
Short Time ◽  
The City

This article introduces partial discussions from a doctoral research in progress that has as object of study the tendency to paci cation and concealment of con icts veri ed in the production process of contemporary urban space - particularly in the most recent Brazil- ian cities - as well as its strategies and mechanisms of control. As a eld of study, it is proposed the city of Palmas, capital of Tocantins, last planned capital of the twentieth century, founded on May 20, 1989, a year that symbolizes the opening of the Western world to the neoliberal economic policy. Based on the observation of the absence of signi cant movements of resistance to the urban space production process at Palmas and interpreting it as a re ection of pacifying tendency of consensus and appeasement / masking of con icts as a feature of neoliberal city, we propose the hypothesis of physical and territorial con guration of the city as a laboratory of the neoliberal model of urban management, in which socio-spa- tial dynamics gradually developed in other contemporary cities through processes historically constructed, get explicit and take place, immediately or in a very short time. Through a historical ap- proach to the context of its creation and occupation, we propose an urban space production reading based on the recognition of char- acteristics relating to its conditions of New Town and neoliberal city as well as the incipient action of the social movements dedicated to the struggles for housing as social agents in this process. 

scholarly journals Rationalization of processes in storage system using ABC analysis and multi-criteria decision-making

Tehnika ◽  
2020 ◽  
Vol 75 (6) ◽  
pp. 621-628
Author(s):  
Željko Stević ◽  
Fatima Ibrahimović ◽  
Dejan Mirčetić
Keyword(s):  
Sustainable Management ◽  
Construction Material ◽  
Storage System ◽  
Quality Parameters ◽  
Global Market ◽  
Supplier Evaluation ◽  
Multi Criteria Decision Making ◽  
Logistics System ◽  
Logistics Systems ◽  
Abc Analysis

Cost rationalization has become imperative in every economic system in order to create adequate foundations for its efficient and sustainable management. Competitiveness in the global market is extremely high and it is challenging to manage business and logistics systems, especially in regards to financial parameters. The presence of inventories is inevitability in every logistics system, and it tends to create adequate policies for their efficient and sustainable management. In order to be able to do this, it is necessary to determine which products represent the largest percentage share in the value of procurement, and which are the most represented quantitatively. In this paper, the warehouse of construction material that represents the wholesale system is considered. Taking into account that it is wholesale, it is necessary to determine what the procurement costs are and what the demand is for certain products. The grouping of products into three categories A, B and C was performed, after which it is necessary to identify appropriate suppliers for each category in order to rationalize procurement costs. Financial, logistical and quality parameters are taken into account. The FUCOM method has been used to determine the significance of these parameters and ARAS method is applied for supplier evaluation and selection.

scholarly journals Shipyard Production Processes Re-Design Methodology Based on Expert Approach and Simulation Modeling

2016 ◽  
Vol 51 (1) ◽  
pp. 25-41
Author(s):  
Tin Matulja ◽  
Marko Hadjina ◽  
Damir Kolić
Keyword(s):  
Production Process ◽  
Process Design ◽  
Simulation Modeling ◽  
Material Flow ◽  
Analytic Hierarchy ◽  
Layout Planning ◽  
Design Alternatives ◽  
Systematic Layout Planning ◽  
Viable Approach ◽  
Optimal Material

The authors propose a synergy of expert approach methods through the Systematic layout planning (SLP) and Analytic Hierarchy Process (AHP) as tools for the shipyard production process design towards an optimal material flow, in combination with Simulation modeling (SM). Most production process designs are based on the conventional methodology of comparison initiating with benchmarking. Such approach can be misleading. For more reliable and efficient results, the approach suggested by the authors uses a combination of the mentioned three methods within the frame of an expert approach. Firstly, the Systematic layout planning is used for generating a larger number of suboptimal shipyard production process design alternatives. Then, these alternatives are analyzed through an objective decision making tool to reach an optimal material flow alternative. Further, such optimal alternative is tested and evaluated by Simulation modeling (SM). Finally, the presented methodology is confirmed on a case study as a viable approach to an efficient and reliable shipyard production process design.

Parallel Extrusion of Aluminum Alloy Heat Sink with Round-Fin

2013 ◽  
Vol 739 ◽  
pp. 131-135
Author(s):  
Li Han Zhang ◽  
Ke Sheng Wang ◽  
Yu Han ◽  
Jia Yu Ying
Keyword(s):  
Heat Sink ◽  
Material Flow ◽  
Extrusion Process ◽  
Element Analysis ◽  
Automotive Lighting ◽  
Metal Sheets ◽  
The Finite Element Analysis ◽  
Alloy Heat ◽  
Flow Through ◽  
Good Agreement

Parallel extrusion is a combined extrusion process for forming round-fin heat sink on thick metal sheets. In this paper, the parallel extrusion has been applied to manufacture the round-fin heat sink in the automotive lighting. Numerical simulations on the round-fin heat sink forming using the software DEFORM were carried out. The tooling structure with counterpressure on the heat sink formation was investigated. The results show that the tooling structure with counterpressure is helpful to the formation of round-fin heat sink, which not only ensures the height of each round-fin on the heat sink is uniform but also retards the initiation of flow-through on the reverse side of round-fin. In addition, the experiments of press forging process were conducted to validate the finite element analysis, it is shown that the friction at the punch-blank interface has more significant effect on preventing the initiation of flow-through compared with the friction at the die-blank interface, which implies that the punch-blank interface has more significant effect on the material flow in the formation of round-fin, and the simulation results are in good agreement with the experimental data.

Applying Lean Manufacturing Principles to Revolutionize Cubrside Equipment and Collection Processes

2007 ◽  
Author(s):  
Edward W. Smith ◽  
P. Judson Johnston ◽  
Joshua D. Summers
Keyword(s):  
Material Flow ◽  
Lean Manufacturing ◽  
Value Added ◽  
Manufacturing Companies ◽  
Production Flow ◽  
Environmentally Conscious ◽  
Collection Process ◽  
Flow Through ◽  
Similar Vein ◽  
Environmentally Conscious Design

The application of lean manufacturing principles has improved the production flow of manufacturing companies across the globe. In a similar vein, environmentally conscious design has been an increasingly important avenue of research which similarly seeks to reduce waste and thereby mitigate environmental impact. An analysis of the curbside municipal solid waste (MSW) and recycling collection process from a lean manufacturing standpoint reveals numerous non-value added activities which can be eliminated or reduced and value-added activities which can be made more efficient. Environmental America Inc. (EAI) has proposed a collection process which will improve the overall material flow through the use of a collection vehicle specializing in the combined collection of raw waste and recyclable waste. This collection vehicle, combined with localized, low-impact material offloading facilities has the potential to revolutionize the curbside collection process. Our research supports this vision by configuring the truck layout and process operations, as discussed in this paper.

scholarly journals Investigating the Mechanics of Hybrid Metal Extrusion and Bonding Additive Manufacturing by FEA

Metals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 811 ◽  
Author(s):  
Jørgen Blindheim ◽  
Torgeir Welo ◽  
Martin Steinert
Keyword(s):  
Additive Manufacturing ◽  
Material Flow ◽  
Deposition Process ◽  
Feed Speed ◽  
Element Analysis ◽  
Reduced Pressure ◽  
Metal Structures ◽  
Material Deposition ◽  
Flow Through ◽  
Metal Extrusion

Hybrid Metal Extrusion & Bonding Additive Manufacturing (HYB-AM) is a hybrid manufacturing technology for the deposition of layered metal structures. This new deposition process is a complex metal forming operation, yet there is significant lack of knowledge regarding the governing mechanisms. In this work, we have used finite element analysis (FEA) to study material flow in the extruder, as well as the conditions at the interfaces of the deposited extrudate and the substrate, aiming to identify and characterize the process parameters involved. Analysis of the material flow shows that the extrusion pressure is virtually independent of the deposition rate. Furthermore, from the simulations of the material deposition sequence, it is clearly visible how the contact pressure at the interface will drop below the bonding threshold if the feed speed is too high relative to the material flow through the die. The reduced pressure also leads to the formation of a ‘gas-pocket’ inside the die, thus further degrading the conditions for bonding. The analyses of the process have provided valuable insights for the further development and industrialization of the process.

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