June 18, 2006
June 18, 2006
June 21, 2006
11.220.1 - 11.220.11
Utilization of rapid prototyping equipment in senior design projects
Abstract: The use and application of Rapid Prototyping methods has been considered as an useful, but not necessary, step in the design process of new and improved products. Rapid Prototyping (RP) is an optional technology that has changed greatly from the early RP equipment and technology to the currently available option on materials, technology and machines. In certain cases in industry the utilization of RP technologies and equipment is of great benefit. Rapid Prototyping not only allows the people involved to visualize the concepts and/or alternatives being presented, but in some cases it gives them a better and more complete set of parameters that can be utilized to transfer ideas from the conceptual stage to the analysis/improvement stage in the design process. Nowadays the latest RP technologies can be used during the development of engineering projects. From the academic point of view, these projects are with the participation of students and, typically, with local industry. Thus resulting in a situation that benefits all the parties involved. The paper presents a couple of projects where the use of RP was beneficial for design visualization and verification. Initial and final designs for each case are presented, with explanation on the modifications performed and the value added by the use of RP.
The techniques of Rapid Prototyping (RP) began few decades ago when fragile, dimensionally inexact "touch and feel" models were produced to aid in the 3-D representation of drawings. Today, the science of RP has advanced to the point where exceptionally accurate, durable and functional parts can be fabricated with a variety of materials using a number of prototyping methods (Beaudin, R., et. al, 2000). Those RP models, produced mainly from non-metals, have been useful in validating a component for form and fit; and lately there has been a generation of techniques that is producing functional and metallic parts.
Rapid Prototyping refers to “several processes that create physical models directly from a CAD database” (Sriram, et.al. 2002). Components produced by RP machines are usually composed of different materials than the final product versions, and hence do not share many of the desired properties. They are, however, able to provide the designer with an idea of physical, ergonomic, and other properties of a particular component before it is send for production. There currently exist four accepted methods of Rapid Prototyping: a) Stereolithography (SLA) b) Selective Laser Sintering (SLS) c) Fused Deposition Modeling (FDM) d) 3D Printing.
Rodriguez, J., & Keil, M., & Choudhury, A., & Ramrattan, S., & Ikonomov, P. (2006, June), Application Of Rapid Prototyping For Engineering Design Projects Paper presented at 2006 Annual Conference & Exposition, Chicago, Illinois. https://peer.asee.org/1312
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