International Journal of Production Research. 1/1/2005, Vol. 43 Issue 1, p169-194. 26p. 7 Black and White Photographs, 5 Diagrams, 10 Charts.
RAPID prototyping, MANAGEMENT information systems, DECISION support systems, PROTOTYPES, and PRODUCTION engineering
A new method is proposed for selecting the most appropriate rapid prototyping process according to user's specific requirements by using the expert system and fuzzy synthetic evaluation. The selection process is divided into two stages. First, it is necessary to generate feasible alternatives, which are executed under the expert system environment. Second, given those feasible alternatives, the fuzzy synthetic evaluation approach is employed to produce a ranking order of the alternatives and to finalize the most suirapid prototyping system. One distinctive characteristic of this method is that quantitative as well as qualitative measures are employed, providing more accurate results. The decision system developed based on the proposed method is composed of four modules: a database to store the specifications of various rapid prototyping processes; a knowledge-based expert system for determining the feasible alternatives; a fuzzy synthetic evaluation model to select the most suitable rapid prototyping process; and a user interface and an expert interface to interact with the system. The fuzzy synthetic evaluation approach used in the system is illustrated in detail by a numerical example. Furthermore, a Java-enabled solution, together with web techniques, is employed for developing such a networked decision support system. Finally, two examples of rapid prototyping process selection are designed to demonstrate the application of the system. The system has been implemented and can run at a rapid prototyping and manufacturing networked service platform that the authors have developed. [ABSTRACT FROM AUTHOR]
International Journal of Production Research. 3/1/2006, Vol. 44 Issue 5, p919-938. 20p. 4 Color Photographs, 8 Diagrams, 6 Charts, 2 Graphs.
RAPID prototyping, PRODUCTION engineering, MANUFACTURING processes, INDUSTRIAL engineering, POWDER injection molding, MARAGING steel, SINTERING, INJECTION molding of metals, MATERIALS, RESEARCH methodology, and METALLURGICAL research
In this research work, attempts have been made to design, develop and evaluate the performance of mould inserts for injection moulding by using a powder-sintering process. Maraging steel powder, sintering aid and binder are materials used in this proposed development process. Attempts have been made to perform in-depth studies and to apply the powder-sintering process, to eventually produce the final sintered components. In addition, an analysis of the dimensional accuracy of the respective stereolithography master models and an analysis of the sintered specimens during various stages of powder-sintering process have been carried out. The intelligent manufacturing systems (IMS) test part with minor modifications has been used in the evaluation of dimensional accuracy, tolerances, distortion and volumetric variations. The main reason for using this unique geometry is the suitability of its design for injection-moulding processes and tooling. [ABSTRACT FROM AUTHOR]
The article informs about WESTEC Long Beach Convention Center event which showcased the latest in machinery, metrology, design, digital innovations, 3D printing, and engineering expertise in California. It mentions how the emerging technologies that are transforming how we design and make things. It further reports that the Complimentary educational sessions included interactive Knowledge Bars, keynote addresses and informative new-product demonstrations.
International Journal of Production Research. Feb1998, Vol. 36 Issue 2, p291-312. 22p.
COMPUTER software, PRODUCTION engineering, and RAPID prototyping
A new breed of system modelling and engineering tools is required which support the holistic conceptualization of enterprises and their rapid and effective development on an incremental basis. In response to this need the capabilities of four 'proof of concept' systems engineering workbenches are described and assessed with reference to a European standards specification. Also discussed are ongoing research thrusts which potentially will lead to holistic model-based manufacturing systems aligned closely to specific business process need. [ABSTRACT FROM AUTHOR]
MANUFACTURING processes, RAPID prototyping, MASS production, PROTOTYPES, and PRODUCTION engineering
Rapid manufacturing - defined as the direct production of finished goods from a rapid prototyping device - remains at present more a goal than reality for industry. The application of 3D printing technologies, however, promises to merge rapid prototyping capabilities with the high-volume throughput of conventional manufacturing. Proponents believe that these processes may soon lead to the tooless production of finished goods and the mass production of individually customized parts. [ABSTRACT FROM AUTHOR]
RAPID prototyping, PRODUCTION engineering, HIGH-speed machining, CUTTING machines, METAL cutting, and METAL powders
The article focuses on how the lessons learned by manufacturers from metalcutting can guide in their adoption of additive manufacturing (AM). Topics covered include how AM equipment developers are addressing the lack of speed that limits AM, the importance of optimizing material delivery and post-processing to ensure the efficiency of the entire system, and the influence of metal printing on metal removal.
International Journal of Production Research. 11/15/2004, Vol. 42 Issue 22, p4691-4708. 18p. 5 Charts.
MANUFACTURING processes, RAPID prototyping, PRODUCTION engineering, and PRODUCTION management (Manufacturing)
An investigation into how the advent of Rapid Manufacturing will influence an individual designer's approach to product design and materials selection is detailed. The assumption is made that Rapid Prototyping machines have evolved into viable manufacturing systems and all associated problems with accuracy, surface finish and repeatability have been resolved. Without the restriction of removing a product from a tool, designers will be free to design any complexity of geometry that they either desire or require. This tool-less approach to manufacturing will have profound implications on the way designers are accustomed to working and will eliminate most Design for Manufacture considerations. Design investigations are presented to highlight the potential importance and scope of Rapid Manufacturing. With advances in a new range of materials, some Rapid Manufacturing is happening today--albeit with existing Rapid Prototyping equipment. However, to enable designers to use existing Rapid Prototyping equipment for manufacturing purposes, there is a need for comprehensive information relating to the mechanical properties of the available materials. This is required to enable "Design for Rapid Manufacture". The most comprehensive analysis to date of three new materials aimed for end-use part manufacture at differing ages, humidities and temperatures is presented. [ABSTRACT FROM AUTHOR]