Download or read book The Impact of Alternative Cell Locations and Alternative Routes of Material Handling Equipment in the Design of Cellular Manufacturing Systems written by Yunan Karim and published by . This book was released on 1999 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cellular Manufacturing Systems (CMS) have claimed many advantages over traditional job shop processes. Some of the advantages reported by several users of CMS are reduction in throughput time, reduction in WIP inventory, improvement in product quality, faster response time to customer orders, shorter move distances, increase in manufacturing flexibility, and greater job satisfaction. In its implementation, CMS organizes a production floor into manufacturing cells. Hence, the important issue that needs to be addressed first is the cell formation (CF) problem. CF deals with the identification of part families, machine groups, and allocation of part families and machine groups to cells or vice versa. In the past, most studies in CF have assumed that the location of a cell is known a priori and a unique route exists between two cells. However, in an actual manufacturing environment, alternative locations are available for locating each cell. Similarly, when the capacity of the material handler being used is limited, alternative routes may have to be used to move part loads between two cells. In this research, the issues dealing with alternative cell locations and alternative routes of material handling equipment are investigated. In addition, several other important factors common to CF are also considered. These include machine capacity limitations, batches of part demands, non-consecutive operations of parts, and maximum number of machines assigned to a cell. A mathematical model is first formulated to represent the research problem. The model is a binary and general integer non-linear programming model, and it belongs to the class of NP-hard problem. Therefore, a higher level heuristic algorithm, based on the concept known as tabu search, is developed to efficiently solve the problems with industry merit. Incorporating the features associated with the tabu search, resulted in developing six different versions of the heuristic solution algorithm. The six heuristics are tested on twenty small problems, and the quality of their solutions is evaluated by investing significant effort to find their optimal solutions. The evaluation shows that the heuristics are highly effective. The solutions obtained from the heuristics have average percentage deviation of less than 3% from the optimal solutions. The heuristics are also tested on their performances with medium and large problems. By using a statistical experiment that is based on randomized block design, the performance of the six heuristics is compared. Three different problem structures, ranging from 4 parts to 30 parts and from 3 locations to 9 locations are used in the experimentation. The experiment reveals that in general, the tabu search based-heuristic using fixed tabu list size and long-term memory based on minimal frequency strategy is preferred to other heuristics as the problem size increases.
Download or read book Cellular Manufacturing Systems written by Gürsel A. Süer and published by . This book was released on 2017-12 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chapters included in this book represent the work from the US, Canada, Japan, China, India, Iran, Netherlands, Turkey, Slovakia, and Portugal. The book attempts to cover the cellular manufacturing area from various angles. In terms of solution techniques, different approaches such as heuristics, mathematical models, networks models, genetic algorithm approaches, artificial neural networks, knowledge-based algorithms, a space search algorithm, simulated annealing, fuzzy concepts, analytic hierarchy processes and simulation are included in the book. As for performance measures, most chapters target a single objective whereas some others cover multiple objectives. In terms of the complexity of the problems, the authors divide them into simpler single phase problems versus more complex problems that require multiple-phase solutions. Most of the chapters discuss deterministic problems. On the other hand, a few of the chapters focus on stochastic cases. There are many new concepts and solution approaches covered in this book. The details of the material coverage is listed in the following paragraphs. The book starts with the evolution of cellular manufacturing. In terms of design-related issues, it covers the application of math modeling for cell formation, family and subfamily formation, production system selection, formation and evaluation of design alternatives, machine layout, dynamic cells, virtual cells, cell formation considering alternative routes, remainder cells, cell formation with product of life cycle considerations, demand-variability based cell formation, layered cellular design, assembly cells and a recent Japanese proposition called SERU cells. All types of cells, namely labor-intensive cells, machine-intensive cells and robotic cells are covered in the book. In terms of operational and control issues, human skills, manpower allocation, cell size determination, dispatching rules, parallel machine scheduling, flowshop scheduling, re-entrant flowshop scheduling, flexible job shop scheduling, assembly line balancing, process planning and scheduling, multiple-resource scheduling, cell loading and cell scheduling, synchronized flow, planning concepts such as period batch control, polka, Kanban, conwip and more are discussed. Cases studies include electromechanical assembly, bicycle manufacturing, igniter assembly system, jewelry manufacturing and semi-conductor industry. We believe that this book will be of value to students, researchers, academicians and practitioners.
Download or read book Making Manufacturing Cells Work written by Computer and Automated Systems Association of SME. and published by Society of Manufacturing Engineers. This book was released on 1992 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on over ten years of hands-on cell planning and installation worldwide this book analyzes FMC conceptual development, implementation, integration and future trends. Chapters include: the FMC Project Organization, Macro Facility Planning, Evaluating Alternative FMCs, Selling FMC Concepts to Top Management, Material Handling, Robot Applications, Quality Control Systems, Conducting Detail Design, Equipment Specification, Vendor Selection, and also Auditing Cell Performance.
Download or read book Handbook of Cellular Manufacturing Systems written by Shahrukh A. Irani and published by John Wiley & Sons. This book was released on 1999-04-15 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cellular manufacturing (CM) is the grouping of similar products for manufacture in discrete multi-machine cells. It has been proven to yield faster production cycles, lower in-process inventory levels, and enhanced product quality. Pioneered on a large scale by Russian, British, and German manufacturers, interest in CM methods has grown steadily over the past decade. However, there continues to be a dearth of practical guides for industrial engineers and production managers interested in implementing CM techniques in their plants. Bringing together contributions by an international team of CM experts, the Handbook of Cellular Manufacturing Systems bridges this gap in the engineering literature.
Download or read book Cellular Manufacturing Systems written by N. Singh and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: Batch manufactcring is a dominant manufacturing activity in the world, generating a great deal of industrial output. In the coming years, we are going to witness an era of mass customization of products. The major problems in batch manufacturing are a high level of product variety and small manufacturing lot sizes. The product variations present design engineers with the problem of designing many different parts. The decisions made in the design stage significantly affect manufacturing cost, quality and delivery lead times. The impacts of these product variations in manufacturing are high investment in equipment, high tooling costs, complex scheduling and loading, lengthy setup time and costs, excessive scrap and high quality control costs. However, to compete in a global market, it is essential to improve the productivity in small batch manufacturing industries. For this purpose, some innovative methods are needed to reduce product cost, lead time and enhance product quality to help increase market share and profitability. What is also needed is a higher level of integration of the design and manufacturing activities in a company. Group technology provides such a link between design and manufacturing. The adoption of group technology concepts, which allow for small batch production to gain economic advantages similar to mass production while retaining the flexibility of job shop methods, will help address some of the problems.
Download or read book A Cellular Manufacturing System which Considers Alternative Routes During Machine Failure and Demand Changes written by Geonwook Jeon and published by . This book was released on 1999 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Group Technology And Cellular Manufacturing written by Ali Κ. Kamrani and published by Routledge. This book was released on 2020-09-29 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the latest up-to-date documentation on the scope of research in Group Technology (GT) and Cellular Manufacturing (CM). It is a comprehensive listing of the methodologies, techniques, algorithms and tools used for practical implementation of the concepts of GT and CM.
Download or read book Planning Design and Analysis of Cellular Manufacturing Systems written by A.K. Kamrani and published by Newnes. This book was released on 1995-04-11 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leading researchers in the field of cellular manufacturing systems from academia and industry have contributed to this volume. The book aims to report the latest developments and address the central issues in the design and implementation of cellular manufacturing systems. Cellular Manufacturing (CM) is one of the major concepts used in the design of flexible manufacturing systems. CM, also known as group production or family programming, can be described as a manufacturing technique that produces families of parts within a single line or cell of machines. The first part of the book describes various techniques for design and modeling of cellular manufacturing systems. The second part is concerned with performance measure and analysis, followed by a section which presents the applications of artifical intelligence and computer tools in cellular manufacturing systems.
Download or read book A Holistic Approach to Designing Cellular Manufacturing Systems written by Ka-Wing Lau and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "A Holistic Approach to Designing Cellular Manufacturing Systems" by Ka-wing, Lau, 劉家榮, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: ABSTRACT of THESIS A Holistic Approach to Designing Cellular Manufacturing Systems Submitted by Lau Ka Wing for the degree of Master of Philosophy at the University of Hong Kong in December 2004 Cellular Manufacturing Systems (CMSs), which are based on the concept of Group Technology (GT) have been recognized as an efficient and effective way of improving productivity in factories. In recent years, many researchers have tried to find ways of improving CMSs. Most of them have concentrated on distinguishing the part families and machine cells either simultaneously or individually, with the objective of minimizing total intercellular and intracellular part movements. This is known as a cell formation problem (CFP), and is a crucial process in the design of a CMS. Besides considering simple CFPs, some researchers have also focused on machine flexibility, in which parts are having alternative routings/process plans. However, it is very rare to consider the area of aggregation and disaggregation of machines during cell formation under some uncertain constraints. i The first part of this study addressed the design of a CFP holistically, taking into account machine flexibility as well as machine aggregation and disaggregation. Based on the availability of alternative routings, a method was proposed to generate an alternative solution for machine breakdown situations. The aim of this model was to form machine cells and part families so as to minimize the intercellular and intracellular part movements. In practice, as some components may not be finished within only one cell, they have to travel to other cells for further operations. Under such circumstances, intercellular part movement will occur. Different sequences of machine cells may result in different total intercellular movement units. A method was therefore proposed in the second part of the study for solving inter-cell layout problems (IECLPs) based on the results previously obtained. In this part, the impact of inter-cell layouts on minimizing intercellular movement units was studied. Parts moving within cells are called intracellular part movements. The sequences of machines within cells are very important from the point of view of reducing total intracellular part movement units. However, little research into these intra-cell layout problems (IACLPs) has been carried out. In the third part of the study, a method of handling all the sequences of machines within each existing cell and the sequence of the existing cells simultaneously was suggested. The aim of the solution to the intra-cell and inter-cell layout problem (IAECLP) ii addressed in this part of study was to minimize total intracellular and intercellular part movements. It is noted that IECLPs and IAECLPs are considered as quadratic assignment problems (QAPs). Since CFPs and QAPs have already been proved to be NP-complete, a genetic algorithm (GA) is employed through the study, as it performs better for complex optimization problems. The holistic approach proposed in this study will lead to the development of vertical integration from cell formation to intra-cell and inter-cell layouts. In other words, CMS designers will in future be able to consider IAECLPs as well as CFPs. An industrial case study was made of a steel member production company for demonstration purposes, and a comparative study ev
Download or read book Cellular Manufacturing Systems Design with Alternative Routing Consideration written by Kiran B. Doshi and published by . This book was released on 1991 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design Analysis and Control of Manufacturing Cells written by American Society of Mechanical Engineers. Winter Annual Meeting and published by . This book was released on 1991 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Group Technology and Cellular Manufacturing written by Nallan C. Suresh and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Group Technology and Cellular Manufacturing (GT/CM) have been widely-researched areas in the past 15 years and much progress has been made in all branches of GT/CM. Resulting from this research activity has been a proliferation of techniques for part-machine grouping, engineering data bases, expert system-based design methods for identifying part families, new analytical and simulation tools for evaluating performance of cells, new types of cell incorporating robotics and flexible automation, team-based approaches for organizing the work force and much more; however, the field lacks a careful compilation of this research and its outcomes. The editors of this book have commissioned leading researchers and implementers to prepare specific treatments of topics for their special areas of expertise in this broad-based philosophy of manufacturing. The editors have sought to be global both in coverage of topic matters and contributors. Group Technology and Cellular Manufacturing addresses the needs and interests of three groups of individuals in the manufacturing field: academic researchers, industry practitioners, and students. (1) The book provides an up-to-date perspective, incorporating the advances made in GT/CM during the past 15 years. As a natural extension to this research, it synthesizes the latest industry practices and outcomes to guide research to greater real-world relevance. (2) The book makes clear the foundations of GT/CM from the core elements of new developments which are aimed at reducing developmental and manufacturing lead times, costs, and at improving business quality and performance. (3) Finally, the book can be used as a textbook for graduate students in engineering and management for studying the field of Group Technology and Cellular Manufacturing.
Download or read book Comprehensive Models and Solution Procedures for Integrated Cellular Manufacturing Systems Design written by Steve Ah kioon and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cellular manufacturing (CM) has emerged because of the need for manufacturing organizations to supply products that require more customization and that have shorter product life cycles and times to market. This shift from mass production to demands for mid-volume and mid-variety product mixes has shown that traditional manufacturing systems relying on functional or line layouts are not efficient and flexible enough. CM is an alternate manufacturing system combining the high throughput rates of line layouts with the flexibility offered by functional layouts (job shops). The benefits include reduced set-up times, material handling, in-process inventory, better product quality and market response time. The benefits of CM can only be achieved by sufficiently incorporating the real-life structural and operational features of a manufacturing plant when creating the cellular layout. This research presents two integrated CM models, with an extensive coverage of important manufacturing structural and operational features. The first CM model is initially formulated as a mixed integer non-linear program that incorporates multi-period production planning and dynamic system reconfiguration with deterministic production requirements. It consists of alternate process routings, the operation sequence of parts, machine duplication, machine procurement and machine capacity. Preliminary computational experiments show that only small-scale problems can be solved using the developed mixed integer non-linear program. This warrants the linearization procedures that are proposed to convert it into a linearized mixed integer programming formulation so as to solve problems of larger scale. This linearized mixed integer program is first solved using an exact solution (ES) procedure through the simplex-based branch and cut procedure of CPLEX software. Computational results are presented by solving some small-scale to large-scale numerical examples, extracted from existing literature. Although small to medium-sized problems can be solved using ES, larger ones (representing real-life sized problems) cannot be solved within reasonable computational times. A tabu search meta-heuristic is, therefore, developed to solve this mixed integer linear program. The results show that the tabu search procedure generates good quality solutions for real-life size problems within acceptable computational times. The second model addresses the same attributes as the first one but an important extension is the introduction of routing flexibility in the system by the formation of additional alternate part process routings, called contingency routings . In addition to the alternate main process routings being created for each part type, the model forms contingency routings, which serve as backups so as to effectively address the reality of part process routing disruptions, thus allowing the cellular manufacturing system to operate in a continuous manner even in the event of any breakdowns. This enhanced model is formulated as a mixed integer linear program and is then solved using the simplex-based branch and cut procedure of CPLEX (ES). The results show that the contingency and main routings can be formed simultaneously, thus bringing enhanced system and routing flexibility. The trade-off between the increased system flexibility obtained versus the additional cost to be incurred through the formation of contingency routings for all parts is discussed by comparing the solutions obtained from the model without routing flexibility and the one with routing flexibility. It is found that the enhanced system flexibility enabled by contingency routings offsets the additional system investment costs. Keywords : integrated cellular manufacturing systems design, mixed integer programming, linearization procedures, simplex-based branch and cut procedure, tabu search, routing flexibility, contingency routings, enhanced CM system flexibility.
Download or read book An Experimental Comparison of Cellular group Technology Layout with Process Layout written by Barbara Bechler Flynn and published by . This book was released on 1986 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Integrated Approach in the Design of Cellular Manufacturing Systems for Dynamic Production Requirements written by Fantahun Melaku Defersha and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Empirical Investigation of Factors Influencing Reorganizations to Cellular Manufacturing written by Danny J. Johnson and published by . This book was released on 1998 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Mathematical Approach to the Design of Cellular Manufacturing System Considering Dynamic Production Planning and Worker Assignments written by Tariq Aljuneidi and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
