The National Shipbuilding Research Program. Automated Process Application in Steel Fabrication and Subassembly Facilities; Project Summary PDF Download
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Languages : en
Pages : 15
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Book Description
The objective of NSRP Project 1-96-6 was to develop a methodology to identify specific processes within Steel Fabrication and Subassembly that were good candidates for automation, and to determine the degree and mix of automation which would have the best overall effect on the defined areas. Because of the large scope of the project, computer simulation was used to model the focus areas. Computer simulation lends itself well to investigations such as this because of software s capability to: Determine the effects of randomness and variability in the processes; Model large systems with many variables; Determine effects over long periods of time; Determine effects of costly changes before investing money and resources; Quickly produce results for comparisons of system changes; Present concepts visually as an aid in explaining them. Models were created that were representative of National Steel and Shipbuilding Company's (NASSCO) current Steel Fabrication and Subassembly processes. These As-Is models were then analyzed for bottlenecks and constraints that could be overcome through the use of automation. Once the constraints were identified and suitable automation alternatives were purposed, To-Be models were created incorporating the automation. The results of the As-Is and o-Be models were used in order to compare the performance of the two systems, and as a basis for a Return on Investment (ROI) calculation.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 15
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Book Description
The objective of NSRP Project 1-96-6 was to develop a methodology to identify specific processes within Steel Fabrication and Subassembly that were good candidates for automation, and to determine the degree and mix of automation which would have the best overall effect on the defined areas. Because of the large scope of the project, computer simulation was used to model the focus areas. Computer simulation lends itself well to investigations such as this because of software s capability to: Determine the effects of randomness and variability in the processes; Model large systems with many variables; Determine effects over long periods of time; Determine effects of costly changes before investing money and resources; Quickly produce results for comparisons of system changes; Present concepts visually as an aid in explaining them. Models were created that were representative of National Steel and Shipbuilding Company's (NASSCO) current Steel Fabrication and Subassembly processes. These As-Is models were then analyzed for bottlenecks and constraints that could be overcome through the use of automation. Once the constraints were identified and suitable automation alternatives were purposed, To-Be models were created incorporating the automation. The results of the As-Is and o-Be models were used in order to compare the performance of the two systems, and as a basis for a Return on Investment (ROI) calculation.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 205
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Book Description
In an effort to produce cost competitive ships in a time of reduced Defense spending and dominance of the world commercial market by foreign yards, the American shipbuilding industry is investigating methods which will streamline production and reduce fabrication and assembly times.
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Category :
Languages : en
Pages : 54
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Book Description
In an effort to produce cost competitive ships in a time of reduced Defense spending and dominance of the world commercial market by foreign yards. the American shipbuilding industry is investigating methods that will streamline production and reduce fabrication and assembly times. One such methods is the introduction of automation into steel fabrication and subassembly processes. Many of the processes in these areas are both labor intensive and repetitive. characteristics that are ideally suited to be handled by automation. The drawback, however, is the capital cost associated with automation especially when it is not known whether the automation will produce a positive return on the investment dollar. Computer simulation is being used in other manufacturing industries worldwide to gain insight into how the introduction of new resources affects the company's current manufacturing capabilities and whether or not the new resources will produce a positive return on investment.
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Category :
Languages : en
Pages : 82
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Book Description
Author: University of Michigan Transportation Research Institute
Publisher:
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Category :
Languages : en
Pages : 100
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Author: United States. Maritime Administration
Publisher:
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Category : Merchant marine
Languages : en
Pages : 594
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Author:
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Category :
Languages : en
Pages : 134
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Book Description
The purpose of the workshop was to bring together a representative mix of industry experts, government representatives and educators to develop an understanding of robotics, ascertain the degree of common problems within the industry associated with potential robotics applications and to make recommendations as to what cooperative action might be taken to resolve these problems. The first two morning sessions were devoted to presentations by experts in the various phases of robotics to establish a common base for understanding the current state-of-the-art of robotics. Afternoon sessions were divided into two phases. The first consisted of roundtable discussions by all attendees to gain an overview of shipyard requirements for improving productivity and/or reducing the number of people doing undesirable tasks. The second was to form three discussion groups to establish the state-of-the-art in their respective areas, identify economic problems, and recommend such action as would possibly satisfy the shipyard requirements through the application of robotics. These groups were: Welding and Assembly Surface Preparation/Coating & Material Handling Facilities/Industrial-Manufacturing Engineering, CAD/CAM Interface And Other Potential Applications.
Author: United States. Federal Maritime Commission
Publisher:
ISBN:
Category : Merchant marine
Languages : en
Pages : 76
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Book Description
Author:
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Category :
Languages : en
Pages : 68
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Book Description
Group Technology has been in use since the mid-1920s in a number of U.S. industries other than shipbuilding. The Europeans and Japanese have been applying the concept to shipbuilding since the 1950s. Since the introduction in the 50s in Japanese yards they have adapted it to their culture and carried Group Technology to its fullest potential. This has been confirmed by observation of their methods of fabrication assembly and installation. In the last ten years a number of articles and guides have been written plus workshops have been held on how to apply the concepts of Group Technology to U.S. shipyards. The actual application of these techniques has only occurred in a few areas, primarily in the Steel Fabrication and Assembly functions. The goal of this project is to apply the Group Technology concepts in areas not already addressed. The application of Group Technology techniques can lead to reduced labor costs, improved material flow and handling methods, reduced space requirements not only for operational activities, but also for support activities such as storage. The end result will be better managerial control of the operation to meet the demands of the industry.
Author: Division on Engineering and Physical Sciences
Publisher: National Academies Press
ISBN: 030905382X
Category : Technology & Engineering
Languages : en
Pages : 161
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Book Description
The U.S. shipbuilding industry now confronts grave challenges in providing essential support of national objectives. With recent emphasis on renewal of the U.S. naval fleet, followed by the defense builddown, U.S. shipbuilders have fallen far behind in commercial ship construction, and face powerful new competition from abroad. This book examines ways to reestablish the U.S. industry, to provide a technology base and R&D infrastructure sustaining both commercial and military goals. Comparing U.S. and foreign shipbuilders in four technological areas, the authors find that U.S. builders lag most severely in business process technologies, and in technologies of new products and materials. New advances in system technologies, such as simulation, are also needed, as are continuing developments in shipyard production technologies. The report identifies roles that various government agencies, academia, and, especially, industry itself must play for the U.S. shipbuilding industry to attempt a turnaround.
