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inproceedings by Durga Prasad

Polish Academy of Sciences, 2019

Today's manufacturing environment is highly uncertain, and it is continuously changing. It is cha... more Today's manufacturing environment is highly uncertain, and it is continuously changing. It is characterized by shorter life cycles of products and technologies, shorter delivery times, an increased level of customization at the price of a standard product, increased product variety, quality as well as demand variability and intense global competition. Academicians, as well as practitioners, agree that uncertainty will continue to grow in the twenty-first century. To deal with the uncertainties in demand variation and production capacity a manufacturing system is required which can be easily reconfigured when there is a need at low cost. A reconfigurable manufacturing system is such a type of system. In the present work, the concept of the reconfigurable manufacturing system has been discussed and reviewed. It has been compared with dedicated systems and flexible manufacturing systems. Part family formation and barriers of reconfiguration also have been discussed. This work is an attempt to contribute to the conceptual systematization of the reconfigurable manufacturing system and reconfigurability by synthesizing the vast literature available after a systematic review.

International Conference on Innovations and Developments in Mechanical Engineering (IDME’17), 2017

Reconfigurable manufacturing system (RMS) is a new type of system which can easily be reconfigure... more Reconfigurable manufacturing system (RMS) is a new type of system which can easily be reconfigured in less time at low cost whenever there is need to change the system configuration. Since, nowadays product variety is increasing rapidly and demand of products is fluctuating very fast therefore there is need of a system which can easily adjust these type of changes. RMS is such type of manufacturing system.

In the present work case study of an Indian industry (Continental Automotive Components Pvt. Ltd) has been included. Reconfigurability principle and lean manufacturing used in the industry has been reviewed. Reconfigurable machines have
been identified and reconfiguration effort has been calculated. Product types have been scheduled for reconfiguration effort and barriers for reconfiguration have been discussed.

National conference on Futuristics in Mechanical Engineering (FME-2016), 2017

Reconfigurable Manufacturing system is a type of manufacturing system which has functionality and... more Reconfigurable Manufacturing system is a type of manufacturing system which has functionality and capacity exactly what is needed. Whenever there is a need to change the functionality and capacity of the system, it can be reconfigured very quickly at low cost. Reconfigurable manufacturing system (RMS) is designed for a part family. It can consist of CNC machines, dedicated machines, and reconfigurable machine tools.

In the present work, a methodology has been discussed for designing a reconfigurable manufacturing system which includes the requirement of number of machines, selection of configurations, selection of reconfigurable machine tools, reconfigurable material handling systems and reconfigurable robots.

articles by Durga Prasad

Songklanakarin Journal of Science & Technology, 2021

Reconfigurable manufacturing system is the new type of manufacturing system which is designed for... more Reconfigurable manufacturing system is the new type of manufacturing system which is designed for a part family and it can change its function and capacity by rearranging of software and hardware components whenever required. In a manufacturing system, products and/or product families are needed to be scheduled to get more productivity and profit. In the present work, fuzzy logic based model has been prepared for scheduling of the part families for reconfigurable manufacturing system considering the
industrial case. For scheduling of products, three criteria have been considered; reconfiguration effort, profit over cost and due date. Fuzzy rules have been developed according to behavior of these criteria. Fuzzy logic model has been made in MATLAB. This model can be used to predict the schedule for maximum for considering reconfiguration effort and due date. Results of the model have been compared with weighted aggregate sum method.

Emerald, 2019

If you would like to write for this, or any other Emerald publication, then please use our Emeral... more If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.com Emerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services. Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation. Abstract Purpose-The purpose of this paper is to develop the methodology which can facilitate the concept of reconfiguration in the manufacturing system. Design/methodology/approach-Design methodology includes the calculation of similarity matrix, formation of part family, and selection of part family. ALC algorithm has been used for part family formation and three criteria have been considered for the selection of part family. These criteria are reconfiguration effort, under-utilization cost, and floor space cost. AHP has been used to calculate the weights of criteria and reference ideal method has been used for the selection of alternatives. Findings-In the manufacturing system, machines should be grouped on the basis of reconfiguration cost. When the time period is less, light machines and Group 1 machines are added and removed. In the case study, the concept of reconfiguration is useful for families (A, B, C, D). Machines can be reused by adding/removing some modules of machines. The concept of reconfiguration becomes more useful when it is implemented with lean manufacturing. Lean manufacturing techniques Jidoka and Poka-yoke are used to increase the diagnosability of the system. Practical implications-Industrial case study has been considered. Social implications-Market competition is increasing rapidly and it increases the demand and variety of products, due to which manufacturing enterprises are forced to adapt a manufacturing system which can adjust its capacity and functionality quickly at low cost. To reconfigure manufacturing system from one product/product family to another product/product family, changes can be done in hardware and/or software components in response to sudden changes in the market or in regulatory requirements. Originality/value-An integrated approach for reconfiguration has been proposed considering the industrial application. It includes weighted Jaccard function, ALCA, AHP, RIM. The methodology for calculation of reconfiguration effort, under-utilization cost, and floor space cost has been presented for industrial case.

Nova Science Publishers, Inc, 2018

A reconfigurable manufacturing system can change its functionality and capacity whenever there is... more A reconfigurable manufacturing system can change its functionality and capacity whenever there is a requirement. It is a new type of manufacturing system which combines the feature of dedicated and flexible manufacturing system. Reconfigurability of a manufacturing system is the ability of a system to be reconfigured easily at low reconfiguration effort and low cost. In the present work, a case study of an industry has been discussed. Various levels of reconfiguration have been discussed on the basis of market level activities, system level activities and machine level activities. For selection of appropriate level of reconfiguration three criteria (reconfiguration effort, underutilization, and floor space cost) have been considered.

Materials Today: Proceedings, 2018

Reconfigurable manufacturing system is a new type of responsive manufacturing system which can ad... more Reconfigurable manufacturing system is a new type of responsive manufacturing system which can adjust its setup to adjust its capacity and functionality with least effort and time when the demand for the product changes. Reconfigurable manufacturing system (RMS) has the exact capacity and functionality whenever is required. In the present work, an integrated approach of Shannon entropy and multi-attribute range evaluation (MARE) has been used for scheduling of the products. Weights of criteria have been calculated using Shannon entropy and ranking is obtained using MARE. MARE calculates the uncertainty of decision variables into the uncertainty of ranking. For scheduling of products, three criteria have been considered; reconfiguration effort, profit over cost and due date.

Reconfigurable manufacturing system is a responsive manufacturing system which can easily adjust ... more Reconfigurable manufacturing system is a responsive manufacturing system which can easily adjust its capacity and functionality with least effort and time when demand of the product changes. Reconfigurable manufacturing system (RMS) has the exactly capacity and functionality whenever is required. In the present work a methodology has been presented for scheduling of the products on the basis of reconfiguration effort in a multi-product line. For scheduling of products, three criteria have been considered; reconfiguration effort, profit over cost and due date. Integrated approach of Shannon entropy and TOPSIS has been used for scheduling of the products.

The current growth in present time due to globalization of markets means more competition for com... more The current growth in present time due to globalization of markets means more competition for companies especially those in developing economies that have limited analytical tools for business decisions. Market demand uncertainty affects the performance and behavior of the planning processes used by production to satisfy sales. This uncertainty and the resulting instability in the production schedules affect the relationships with the suppliers from whom the company purchases raw materials and component parts. In order to solve the problem, this research developed a SCM system dynamics model that helps business managers and researchers in SCM make better and informed decisions for close life cycle products. The work is focused on the study of behavior of replacement in a supply chain related to closed life-cycle products by system dynamics, that are goods produced and sold and if any defect is found the product is replaced. This study includes the effect of replacement in profit and other variables. This work also includes the development of a model in the system and validation of the model. In this model the relation of the variables like customer, demand, cost, price is studied and the work is focused that what will be the optimum value of the defected product. It has been assumed that if we want to decrease the defected product the cost of the production will increase and that will reduce the profit and if we want to increase the defect the no of customers will decrease and their demand will decrease and this will decrease the profit.

International Journal of Production Research, 2018

Reconfigurable manufacturing system is a new type of manufacturing system which can change its ca... more Reconfigurable manufacturing system is a new type of manufacturing system which can change its capacity and functionality very easily and quickly whenever required. RMS (reconfigurable manufacturing system) has capacity and functionality exactly what is required. RMS is adjustable to the fluctuating demands and it can be easily upgraded with new process technology. Reconfigurability of a manufacturing system is measured in terms of cost, effort and time. It is the ability of a manufacturing system to be reconfigured quickly with low reconfiguration effort at low cost. In the present work, reconfigurability has been considered in Continental Automotive Components Pvt. Ltd. on the basis of RMS principles. A modified reconfigurable layout has been proposed for an assembly line and scheduling of the products has been done for the criteria reconfiguration effort, profit over cost and due date. Scheduling of the products has been done using the integrated approach of Shannon entropy and RIM (Reference Ideal Method). R program has been written for scheduling. Sensitivity analysis has been conducted for the problem.

Papers by Durga Prasad

Received: 19 July 2018 Abstract Accepted: 23 November 2019 Today’s manufacturing environment is h... more Received: 19 July 2018 Abstract Accepted: 23 November 2019 Today’s manufacturing environment is highly uncertain, and it is continuously changing. It is characterized by shorter life cycles of products and technologies, shorter delivery times, an increased level of customization at the price of a standard product, increased product variety, quality as well as demand variability and intense global competition. Academicians, as well as practitioners, agree that uncertainty will continue to grow in the twenty-first century. To deal with the uncertainties in demand variation and production capacity a manufacturing system is required which can be easily reconfigured when there is a need at low cost. A reconfigurable manufacturing system is such a type of system. In the present work, the concept of the reconfigurable manufacturing system has been discussed and reviewed. It has been compared with dedicated systems and flexible manufacturing systems. Part family formation and barriers of re...