FlexSim Simulation to Enhance Productivity of a Production Cell : A Case Study

Author(s):  
Shahd Yaser ◽  
Nour Abdelatif ◽  
Irene Fahim ◽  
Youssef Emad ◽  
Abdelrahman Saleh ◽  
...  
Keyword(s):  
1997 ◽  
Vol 26 (528) ◽  
Author(s):  
Hanne Riis Nielson ◽  
Torben Amtoft ◽  
Flemming Nielson

We describe a case study where novel program analysis technology has been used to pinpoint a subtle bug in a formally developed control program for an embedded system. The main technology amounts to first defining a process algebra (called behaviours) suited to the programming language used (in our case CML) and secondly to devise an annotated type and effect system for extracting behaviours from programs in a such a manner that an automatic inference algorithm can be developed. The case study is a control program developed for the "Karlsruhe Production Cell" and our analysis of the behaviours shows that one of the safety conditions fails to hold.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Daniel Lee Hardy ◽  
Saikat Kundu ◽  
Muhammad Latif

PurposeThe purpose of this case study is to investigate inefficiency and downtime factors within a panel lamination process cell at a timber component manufacturing company. Areas of concern related predominantly to the manual trimming or finishing of a range of laminated timber panels for the caravan and leisure industry. The intermittent feeding of inputs and material outputs was also investigated during this case study.Design/methodology/approachThe case study was conducted over a six-month period using the Six Sigma defining, measuring, analysing, improving and controlling (DMAIC) construct. But was equally supported through a combination of tools both applied in lean manufacturing and statistical properties commonly assigned to Six Sigma projects.FindingsThis paper provides insights about the identification of the root causes for poor productivity and overall equipment effectiveness issues experienced by manual trimming/finishing operations in a laminated timber panel production cell. It also identifies solutions to overcome these issues and benefits (such as improved OEE, reduced downtime and savings in staffing costs) that were obtained due to the application of these solutions. This study contributes to understanding the interconnections of fork-lift truck movements with staff members working within manual finishing areas connected to a panel lamination cell.Originality/valueThis paper contributes new knowledge into the root causes of poor productivity and process performance within manual finishing operations in a laminated timber panel production cell at a small medium enterprise. By applying elements of Six Sigma' quality focussed analytical methods within the DMAIC structure, and simultaneously applying the waste reduction method of lean manufacturing, this paper provides useful perspective on why both these quality improvement-based ideologies are applied to overcome process issues in manufacturing.


2021 ◽  
Vol 33 (7) ◽  
pp. 351-376
Author(s):  
Federica Murmura ◽  
Laura Bravi ◽  
Fabio Musso ◽  
Aleksandra Mosciszko

PurposeThe aim of this study is to develop an in-depth case study on the implementation on Lean six sigma (LSS) in Schnell S.p.A., Italian company leader of an important multinational industrial group, highlighting the benefits that can be achieved from a careful application of this method, the main challenges and organizational learning from its implementation.Design/methodology/approachThe study has been developed with a qualitative approach, creating a single in-depth case study, with the participant observation of researchers in the project which lasted 4 months. Periodic weekly meetings were done with the working group to exchange feedback on the development of the project to share opinions and data.FindingsA project has been developed to stabilize the procurement process of a pull-type production cell, which experienced delays in supply lead times. The causes of the problems in their process of managing the supply of the production cell were found and some inefficiencies in the internal process of fulfillment of supply orders have been intercepted, the optimization of which has allowed the generation of an automatic system for sending supply orders, coming directly from the production line.Originality/valueThis study described the path and dynamics of the transformation process that business organizations undertake for optimizing their profitability and competitive advantage, placing emphasis on an innovative methodology for conducting business process improvement projects, which constitutes its operating philosophy on the effective and efficient use of company resources and skills, to guarantee to the company the achievement of a lasting and defensible competitive advantage over time.


Author(s):  
Martin Juhás ◽  
Bohuslava Juhásová ◽  
Pavol Reménység ◽  
Roman Danel

Abstract The paper presents the possibility of using machine vision in the industrial area. The case study is oriented to indirect image processing in a robotic cell using a Matlab tool. Theoretical part of the contribution is devoted to the comparative analysis of various methods of the object detection and recognition. Analysis of the functionality, speed, performance and reliability of selected methods in the object detection and recognition area is processed. In the practical part, a method of implementing an indirect machine vision is designed to control the handling of objects detected and recognized on the basis of an operator requirement. Based on the analysis of the sample robotic workplace and the identified limitations, possibility of using the indirect computer vision is suggested. In such a case, the image of the workspace scene is saved on the storage and then processed by an external element. The processing result is further distributed in a defined form by a selected channel to the control component of the production cell.


2014 ◽  
Vol 38 (01) ◽  
pp. 102-129
Author(s):  
ALBERTO MARTÍN ÁLVAREZ ◽  
EUDALD CORTINA ORERO

AbstractUsing interviews with former militants and previously unpublished documents, this article traces the genesis and internal dynamics of the Ejército Revolucionario del Pueblo (People's Revolutionary Army, ERP) in El Salvador during the early years of its existence (1970–6). This period was marked by the inability of the ERP to maintain internal coherence or any consensus on revolutionary strategy, which led to a series of splits and internal fights over control of the organisation. The evidence marshalled in this case study sheds new light on the origins of the armed Salvadorean Left and thus contributes to a wider understanding of the processes of formation and internal dynamics of armed left-wing groups that emerged from the 1960s onwards in Latin America.


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